Typical Crystalline Structure Research Articles

Tunable crystalline assemblies using surface-engineered protein cages.

Assembly of nanoparticles into superlattices yields nanomaterials with novel properties. We have recently shown that engineered protein cages are excellent building blocks for the assembly of inorganic nanoparticles into highly structured hybrid materials, with unprecedented precision. In this study, we show that the protein matrix, composed of surface-charged protein cages, can be readily tuned to achieve a number of different crystalline assemblies. Simply by altering the assembly conditions, different types of crystalline structures were produced, without the need to further modify the cages. Future work can utilize these new protein scaffolds to create nanoparticle superlattices with various assembly geometries and thus tune the functionality of these hybrid materials.

The role of defect charge, crystal chemistry, and crystal structure on positron lifetimes of vacancies in oxides

Density functional theory based positron lifetime (PL) calculations for cation and oxygen monovacancies in a range of oxides-hematite, magnetite, hercynite, and alumina-have been conducted to compare the impact of defect chemistry and crystal structure on the predicted lifetimes. The role of defect charge state has also been examined. A comparison across the same type of crystalline structure but different composition shows that oxygen vacancies only induce a slight increase in the positron-electron overlap and thus barely modify the PL as compared to the bulk. A much more substantial increase of PL is observed for cation monovacancies, regardless of crystal structure or the elemental nature of the vacancy, which we ascribe to an enhanced localization of charge density around the vacant site. The structural and compositional richness of the oxide leads to longer defect PLs, with defected hercynite exhibiting the longest PLs. The charge state of cation monovacancies modifies only by a small percentage the positron localization, relegating to secondary importance the metal defect's oxidation state in modifying the lifetime of positrons within vacancy traps.

Analysis of starch content and multi-scale structure of reconstituted cut stems in tobacco

AbstractOn the basis of the relationship between the composition of the reconstituted cut stems and their functional positioning in the leaf formulation, this study improves the proportion of high-quality tobacco products by investigating the material basis of the effect of reconstituted cut stems on the quality of cigarette products, by characterizing the starch content, physicochemical properties, and characteristic structures of different components in tobacco products. The results showed that the starch content in reconstituted cut stems (4.93 ± 0.27%) was between high-quality tobacco leaves (4.48 ± 0.17%) and cut stems (5.13 ± 0.18%), indicating that the reduction of starch content during the processing of reconstituted cut stems is more conducive to the high-value treatment of reconstituted cut stems. At the same time, through the evaluation of the physico-chemical properties and multi-scale structural characteristics of starch particles, it was found that the starch of the reconstituted cut stems has a rock-like particle structure, and the short-range ordering on the surface increases, forming more ordered structural domains. In addition, the processed reconstituted cut stems increase the crystallinity of the starch. It also exhibits the typical B-type crystalline structure of starch, with stronger molecular chain interactions and high crystalline ordered arrangement. This study will provide technical guidance and theoretical support for improving the quality of reconstituted cut stems products, improving the bioavailability of tobacco products, reducing raw material costs, and effectively reducing the starch content of tobacco in the development of tobacco products.

Utilizing agricultural biowaste for food safety: Integrating naturally synthesized silver nanoparticles as antibacterial coating

The growing global population drives increased food demand, impacting the global packaging materials sector, leading to the development of active packaging to enhance food quality, shelf life, and safety. Proper packaging materials, with improved antibacterial and antioxidant barriers, are becoming important in the food sector to reduce food loss and contamination. This study uses Egyptian basil Ocimum basilicum L manufacturing wastes as a biowaste, an agro-industry waste, as a reducing and capping agent to biosynthesize silver nanoparticles (AgNPs). Then, different contents from AgNPs (0.5, 2, 4 wt%) were entrapped into polyurethane nanofiber (PUNFs) to enhance the antimicrobial and antioxidant properties. Gas chromatography/mass spectrometry (GC/MS) was employed to analyze the chemical constituents present in the aqueous peel extract of Ocimum basilicum L. The physicochemical properties of AgNPs before and after entrapped nanofibers were investigated, their antimicrobial and antioxidant properties were evaluated. As a result of the distinctive surface plasmon resonance properties exhibited by Ag (metallic nanoparticles), there are notable peaks observed at 272.5 nm and a prominent peak at 467.3 nm. TEM analyses indicated that the AgNPs were consistently round and uniform, measuring an average of 17.16 ± 1.94 nm in diameter; SEM also confirmed these findings. AgNPs were found to possess their typical crystalline structure, as evidenced by the results of XRD and TEM analyses. The rise in nanofiber diameter is responsible for the escalated AgNP concentration. The presence of AgNPs and Ocimum basilicum L biowaste significantly enhanced the antibacterial and antioxidant properties compared to pure TPU.

Multiscale analysis of fine slag from pulverized coal gasification in entrained-flow bed

Fine slag (FS) is an unavoidable by-product of coal gasification. FS, which is a simple heap of solid waste left in the open air, easily causes environmental pollution and has a low resource utilization rate, thereby restricting the development of energy-saving coal gasification technologies. The multiscale analysis of FS performed in this study indicates typical grain size distribution, composition, crystalline structure, and chemical bonding characteristics. The FS primarily contained inorganic and carbon components (dry bases) and exhibited a "three-peak distribution" of the grain size and regular spheroidal as well as irregular shapes. The irregular particles were mainly adsorbed onto the structure and had a dense distribution and multiple pores and folds. The carbon constituents were primarily amorphous in structure, with a certain degree of order and active sites. C 1s XPS spectrum indicated the presence of C–C and C–H bonds and numerous aromatic structures. The inorganic components, constituting 90% of the total sample, were primarily silicon, aluminum, iron, and calcium. The inorganic components contained Si–O-Si, Si–O–Al, Si–O, SO42−, and Fe–O bonds. Fe 2p XPS spectrum could be deconvoluted into Fe 2p1/2 and Fe 2p3/2 peaks and satellite peaks, while Fe existed mainly in the form of Fe(III). The findings of this study will be beneficial in resource utilization and formation mechanism of fine slag in future.

Structural and Physicochemical Properties of a Chinese Yam Starch-Tea Polyphenol Complex Prepared Using Autoclave-Assisted Pullulanase Treatment.

Interactions between food components have a positive impact in the field of food science. In this study, the effects of tea polyphenol on the structural and physicochemical properties of Chinese yam starch using autoclave-assisted pullulanase treatment were investigated. X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, rapid visco analysis, differential scanning calorimetry, and the 3,5-dinitrosalicylic acid method were applied in this study. The results showed that the Chinese yam starch-tea polyphenol complex formed a structural domain with higher thermal stability along with lower pasting viscosities than native starch. The in vitro digestibility of Chinese yam starch decreased with the addition of the tea polyphenol, and the amount of resistant starch content in the complex was 56.25 ± 1.37%, significantly higher than that of native starch (p < 0.05). In addition, the complex showed a B+V-type crystalline structure, which confirmed that the interaction modes between the starch and tea polyphenol include hydrogen bonding and hydrophobic interactions. Moreover, the appearance of an irregular sponge network structure of the complex further supported the interactions between the starch and tea polyphenol. This study provides a theoretical basis for the development of functional foods using Chinese yam starch.

PVK-based LEDs doped by cadmium sulphide nanocrystals coated by mixed thiophenol and 1-decanethiol

Nanoparticles capped with more than one ligand have great potential to improve the properties of optoelectronic devices. To discuss this possibility, we synthesized cadmium sulphide nanocrystals coated by two different ligands, 1-decanethiol and thiophenol. In addition, as a reference, cadmium sulphide nanocrystals coated with thiophenol were synthesized. Photoluminescence and UV–Vis absorption measurements indicated that the maximum emission peaks of both cadmium sulphide nanoparticles were located around 600 nm and the absorption edges showed the existence of two different types of crystalline structure, cubic zinc blende and wurzite-type hexagonal. But the nanoparticles with both ligands had higher emission intensity than nanocrystals coated only by thiophenol. Finally, hybrid light-emitting devices have been manufactured with the following structure: Indium Tin Oxide/Poly(3,4-ethylenedi-oxythiophene): poly(styrene sulfonate)/poly(9-vinylcarbazole): cadmium sulphide/Aluminum. These devices presented an active layer composed of poly(9-vinylcarbazole) doped by cadmium sulphide nanocrystals coated only by thiophenol in one case and with thiophenol and 1-decanethiol in the other case. The inclusion of nanocrystals in the active layer increased the current density of these devices. In addition, the solubility in chlorobenzene of nanoparticles with both ligands was improved, due to the presence of 1-decanethiol on their surface. Moreover, the presence of the second ligand intensified the influence of nanoparticles in electroluminescence measurements compared to cadmium sulfide nanocrystals without 1-decanethiol.

Dry heating affects the multi-structures, physicochemical properties, and in vitro digestibility of blue highland barley starch.

As a physical method for starch modification, dry heating treatment (DHT) at high temperatures (150 and 180°C, respectively) was applied to blue highland barley (BH) starch with different durations (2 and 4 h). The effects on its multi-structures, physicochemical properties, and in vitro digestibility were investigated. The results showed that DHT had changed the morphology of BH starch, and the diffraction pattern remained an "A"-type crystalline structure. However, with an extension of DHT temperature and time, the amylose content, gelatinization temperature, enthalpy value, swelling power, and pasting viscosity of modified starches decreased, while the light transmittance, solubility, and water and oil absorption capacities increased. Additionally, compared with native starch, the content of rapidly digestible starch in modified samples increased after DHT, whereas those of slowly digestible starch and RS decreased. Based on these results, the conclusion could be drawn that DHT is an effective and green way to transform multi-structures, physicochemical properties, and in vitro digestibility of BH starch. This fundamental information might be meaningful to enrich the theoretical basis of physical modification on BH starch and extend the applications of BH in the food industry.

Amorphous FeOOH Anchored on Boron and Nitrogen Codoped Carbon Nanotubes for Fenton-like Oxidation of Sulfamethoxazole

Amorphous iron oxide/hydroxides with structural disorder can be a potential alternative to typical crystalline structures when applied in environmental nanotechnology. In this work, novel amorphous FeOOH quantum dots (QDs) anchored on boron and nitrogen codoped graphene nanotubes (FeOOH@BNG) with different Fe loadings were synthesized and applied in the degradation of common antibiotic pollutant sulfamethoxazole (SMX). The as-fabricated catalysts were characterized by a series of physicochemical and thermal techniques, revealing the highly dispersive FeOOH QDs on the BNG surface. The as-prepared catalyst shows excellent catalytic ability toward SMX degradation via a Fenton-like approach. The excellent activity of the as-prepared FeOOH@BNG catalysts was ascribed to the enhanced textural properties and better exposure of active sites, thanks to the highly dispersive Fe sites on the BNG supports. The optimal catalyst, FeOOH-5@BNG, was further employed for the optimization of key reaction parameters such as catalyst loading, H2O2 dosage, pH, and reaction temperature. Moreover, electron paramagnetic resonance (EPR) and reactive species quenching tests were employed to reveal the responsive reactive oxygen species and the mechanism in the FeOOH@BNG/H2O2 system for SMX degradation. The current study not only opens new insights into the fabrication of amorphous but metallic nanomaterials but also leads to their potential application in environmental remediation.

Characterization of Biodegradable Films Made from Taro Peel (Colocasia esculenta) Starch.

Studies of renewable polymers have highlighted starch's role to replace petroleum-based components to produce biodegradable films with plastic-like qualities. In this study, the novelty of taro peel starch (TPS) to produce such films using the casting technique is reported for the first time. A response surface method (RSM) approach was employed to optimize different concentrations of TPS (2.5-3.5%, w/w) and glycerol (25-35%, w/w) and investigate their effects on the physico-mechanical and water barrier properties of TPS films. TPS films showed a positive linear effect (p &lt; 0.05) for thickness (0.058-0.088 mm), opacity (1.95-2.67), water vapor permeability (0.06-0.09 g∙m/m2∙kPa∙h), and cubic effect (p &lt; 0.05) for moisture content (0.58-1.57%), which were linked to high starch concentrations when plasticized with glycerol. X-ray diffraction analysis of TPS films depicted "amorphous"-type crystalline structure peaks at 19.88°, while the thermogravimetric analysis of the film samples exhibited 75-80% of the weight loss of TPS film in the second phase between temperatures of 300 °C to 400 °C. All films exhibited homogenous, transparent surfaces with flexibility, and completely degraded in 5 days in simulated river water and composting soil environments, which confirmed TPS as a promising film polymer in food packaging.

Characterization and comparative study on structural and physicochemical properties of buckwheat starch from 12 varieties

Buckwheat is an important starch source because of its health benefits. In this study, buckwheat starches isolated from 12 varieties were analyzed based on the morphological, structural and physicochemical properties. The results showed that starch samples from different varieties had high purity with the total starch ranging from 91.29 to 95.11%, while showing significant differences in ash content (0.12–0.25%), protein content (0.26–0.34%) and amylose content (29.55–36.13%), respectively. All samples presented spherical and irregular shapes and typical A-type crystalline structure, but obvious differences in granule size distribution and relative crystallinity (26.37–35.21%) were observed among 12 varieties. Starch samples differed in lamellar structures, showing higher values of thickness of the samples with higher amylose content. In addition, buckwheat starches with higher amylose content showed higher values in light transmittance and rheological properties, while starch samples with lower amylose content obtained higher values in terms of water solubility, swelling power, pasting behaviors and thermal parameters. The principal component analysis and cluster analysis based on starch property parameters indicated that there were significant similarities and differences among 12 varieties, which might be related to the genotypes. This study would provide valuable information for the full use of buckwheat starch in food and non-food industries.

Luminescence enhancement and tunable color emission in Eu/Dy/Sm codoped CaW1- xMoxO4 phosphor

• A series of Eu 3+ activated CaMoxW1-xO4 phosphors were prepared. • The influence of [MoO 4 ] addition on the vibrational pattern, band gap and luminescence emission was studied. • The energy transfer from [WO 4 ] to Eu 3+ through the [MoO4] as sensitizer was discussed. • The enhancement of color tunability was reported in this paper. A series of Eu 3+ - activated CaW 1-x Mo x O 4 phosphors possessing schellite type crystalline structure were synthesized by using hydrothermal method to study the influence of molybdate doping on the luminescent performances of CaWO 4 :Eu 3+ phosphors. The phase composition, vibrational spectra and luminescent properties were characterized by X-ray diffraction, fourier transform infrared, and photoluminescence spectroscopy. The addition of [MoO 4 ] does not affect the crystalline phases of the synthesized materials. The effect of addition of [MoO 4 ] into the (Ca,Eu)WO 4 on the band gap of the phosphor and Eu 3+ emission has been studied. The strongest emission at 618 nm is corresponding to 5 D 0 → 7 F 2 transition of Eu 3+ under 273 nm excitation indicating that the site symmetry of the Eu 3+ ions was not affected. A red shift in the excitation spectra of the [WO 4 ] was observed with increasing [MoO 4 ] content. Further, color-tunable emissions were also studied by the co-doping of Dy 3+ and Sm 3+ into the (Ca,Eu)W 0.80 Mo 0.20 O 4 phosphor indicating the potential candidate for light emitting diodes.

CFD Analysis and Life Cycle Assessment of Continuous Synthesis of Magnetite Nanoparticles Using 2D and 3D Micromixers

Magnetite nanoparticles (MNPs) have attracted basic and applied research due to their immense potential to enable applications in fields as varied as drug delivery and bioremediation. Conventional synthesis schemes led to wide particle size distributions and inhomogeneous morphologies and crystalline structures. This has been attributed to the inability to control nucleation and growth processes under the conventional conditions of bulk batch processes. Here, we attempted to address these issues by scaling down the synthesis process aided by microfluidic devices, as they provide highly controlled and stable mixing patterns. Accordingly, we proposed three micromixers with different channel configurations, namely, serpentine, triangular, and a 3D arrangement with abrupt changes in fluid direction. The micromixers were first studied in silico, aided by Comsol Multiphysics® to investigate the obtained mixing patterns, and consequently, their potential for controlled growth and the nucleation processes required to form MNPs of uniform size and crystalline structure. The devices were then manufactured using a low-cost approach based on polymethyl methacrylate (PMMA) and laser cutting. Testing the micromixers in the synthesis of MNPs revealed homogeneous morphologies and particle size distributions, and the typical crystalline structure reported previously. A life cycle assessment (LCA) analysis for the devices was conducted in comparison with conventional batch co-precipitation synthesis to investigate the potential impacts on water and energy consumption. The obtained results revealed that such consumptions are higher than those of the conventional process. However, they can be reduced by conducting the synthesis with reused micromixers, as new PMMA is not needed for their assembly prior to operation. We are certain that the proposed approach represents an advantageous alternative to co-precipitation synthesis schemes, in terms of continuous production and more homogeneous physicochemical parameters of interest such as size, morphologies, and crystalline structure. Future work should be directed towards improving the sustainability indicators of the micromixers’ manufacturing process.

Optical, electrical and morphological properties of (PANI/CSA-PEO)/(AgNPs-AgNO3) nanocomposite films

Nanocomposite films of hosted protonated polyaniline (PANI/CSA) in polyethylene oxide (PEO) and incorporated with silver nanoparticles and silver nitrate (AgNPs-AgNO3) were deposited on activated quartz substrates by spin coating technique. Deduced refractive index from UV–Vis spectrophotometry experiments falls in the range of 1.5–2.0 for undoped films, while for the nanocomposite films ranges between 1.7 and 2.1 due to the effect of AgNPs-AgNO3 incorporation. Scanning electron microscopy observations reveal that the typical PANI crystalline structure vanishes gradually with increasing AgNPs-AgNO3 content and the nanocomposite optical band-gap decreases with increasing concentration of AgNPs-AgNO3. An amorphous state is dominant in all nanocomposite films. The electrical conductivity increases with increasing dopant content due to polaron formation and increased concentration of Ag ions at concentrations below 60 wt.% of AgNPs-AgNO3 with respect to PANI/CSA. From fitting the data to a Sigmodial/Gomperz function for concentrations in the range of 100–360 wt.% it was found that the nanoparticles percolation was the dominant electrical conduction mechanism.

Effect of Fermentation Time on Molecular Structure and Physicochemical Properties of Corn Ballast Starch.

The effect of fermentation treatment on the surface morphology, crystal structure, molecular weight, chain length distribution, and physicochemical properties of corn starch was investigated using natural fermentation of corn ballast. The amylose content in corn ballast starch reduced at first after natural fermentation, then grew, following the same trend as solubility. There were certain erosion marks on the surfaces of fermented corn ballast starch granules. The crystalline structure of corn ballast starch remained the same, i.e., a typical A-type crystalline structure, at different fermentation times; however, the intensities of diffraction peaks were different. The weight-average molecular weight of starch first increased and then decreased after fermentation. The content of low-molecular-weight starch (peak 3) decreased from 25.59 to 24.7% and then increased to 25.76%, while the content of high-molecular-weight starch (peak 1) increased from 51.45 to 53.26%, and then decreased to 52.52%. The fermentation time showed a negative correlation with the viscosity of starch, and the pasting temperature first increased, and then decreased. Natural fermentation can be used as a technical means to produce corn starch products as a result of the experiments' findings, and future experiments will detect and analyze the bacterial structure of corn fermentation broth in order to better understand the molecular mechanism of natural fermentation affecting the structure and physicochemical properties of corn starch.

Molecular structure and architectural characteristics of outer shells and inner blocklets of normal and waxy wheat A- and B- starch granules

Outer shells and inner blocklets were isolated from normal and waxy wheat A- and B- starch granules. Microstructural, molecular, and architectural characteristics of the isolated shells and blocklets were investigated using different methods and techniques. The results revealed that the outer shells were flake and net pocket shaped, with a compact surface and mass fractal. On the other hand, inner blocklets exhibited spherical, beaded, and rod shapes with a typical V-type crystalline structure. Crystallinity, degree of short-range order, amylopectin and amylose molecular weight, amount of intramolecular hydrogen bonds, and the average of shorter semicrystalline lamellae repetition distance varied between outer shells and inner blocklets, as well as depending on the type of wheat starch granules, i.e. normal and waxy wheat A- and B- starch granules. The branch chain length distribution of amylopectin affected the thickness of amorphous and crystalline regions, and the crystal order degree influenced the fractal and morphological characteristics of outer shells and inner blocklets. Additionally, amylose and amylopectin of inner blocklets were polymerized to form larger amylose and amylopectin molecules and develop the outer shells. The obtained findings give a theoretical basis for understanding the relationship between molecular structure and architectural characteristics of starch.

Effects of extrusion and enzymatic debranching on the structural characteristics and digestibility of corn and potato starches

Amylose content has a profound impact on the contents of slowly digestible starch and resistant starch. Enzymatic debranching is a safe method to increase the amylose content, however, the lower substrate concentration and high viscosity of fully gelatinized starch limit the efficiency and yield of this method. This paper aims to explore the effects of extrusion and enzymatic debranching on increasing the amylose content thereby increasing slowly digestible starch and resistant starch contents. Different starch concentrations (10%, 15%, and 20%) of extruded corn starch (ECS) and extruded potato starch (EPS) were used to debranch. Both debranched ECS and debranched EPS showed high amylose content of approximately 90%, indicating that all samples with different starch concentrations achieved high-efficiency enzymatic debranching. The high-performance liquid chromatograph results indicated that the samples were mainly short amylose. The samples exhibit a typical B-type crystalline structure and the relative crystallinity of them exceeds 37%. The short amylose exhibited rapid rearrangement ability, with the gelatinization temperature range of rescanning determined as 80–125 °C, this will facilitate the formation of slowly digestible starch and resistant starch. The slowly digestible starch and resistant starch contents of the samples (debranched ECS and debranched EPS) were between 23% and 30% and between 31% and 37%, respectively. These results indicate that the extrusion and enzymatic debranching of a high substrate concentration can efficiently increase the amylose content, thereby significantly reducing the digestibility of starch, and has broad prospects of the actual production of slowly digestible starch and resistant starch.

Dual-frequency power ultrasound effects on the complexing index, physicochemical properties, and digestion mechanism of arrowhead starch-lipid complexes

Multi-scale structural interactions of the arrowhead starch-linoleic/stearic acid complexes under different durations (20, 40 & 60 min) of dual-frequency power ultrasound (DFPU, 20/40 kHz) and their underlying mechanisms were discussed. Differential scanning calorimetry and X-ray diffraction (XRD) revealed V6 type (V6-I, II) crystalline structure for ultrasonically-treated arrowhead starch-linoleic acid (UTAS-LA) complexes. An increased degree of short-range molecular order as IR ratios of 1045/1022 cm−1 was evident from the FTIR results. The complexing index (CI) values of the complexes were greater than 65%, and the highest CI values of 83.04% and 81.26% were found in the case of UTAS-LA40 and UTAS-LA60, respectively. SEM results showed that LA-complexes had a sponge-like structure with smooth surfaces, while the SA-complexes exhibited flaky structures with irregular shapes and rough surfaces. The V-type complexes exhibited a higher digestion resistance than native AS and un-sonicated AS-LA/SA complexes due to partial RDS convention to RS.

Enhancement of enzymatic resistance in V-type starch inclusion complexes by hydrothermal treatments

Resistant starch (RS) is well known for its health beneficial effects for glycemic control and gut health. In addition to some commonly reported RS types, such as raw high amylose maize starch (HAMS), potato starch, retrograded starch, and cross-linked starch, formation of starch inclusion complexes could also contribute to an increase in RS content. In this study, V type starch inclusion complexes with two guest compounds, ascorbyl palmitate (AP) and palmitic acid (PA), were formed using the novel “empty” V type method, and hydrothermal treatments were performed to further enhance the RS contents. Complimentary X-ray diffraction (XRD) and differential scanning calorimetry (DSC) techniques were conducted to assess the crystalline structure and thermal properties of the raw and treated inclusion complexes, and simulated in vitro enzymatic digestion was performed to study the structure-digestibility relationship in the treated samples. Although the raw inclusion complex samples exhibited minimal RS contents, all the treatments retarded starch digestion by increasing RS or SDS levels. For both V6h-AP and V6h-PA inclusion complexes, annealing followed by long-term strong acid hydrolysis treatment (ANN-ACH) resulted in the greatest increase in RS content, followed by strong ACH treatments alone. In addition, while presenting a comparable RS level as traditional RS2, the ANN-ACH treated V6h-AP inclusion complex retained a V type crystalline structure, indicating its great potential as a novel type of RS, i.e., RS5. The study findings could have practical implications for the design and modification of RS-containing food for the control and modulation of glycemic response.

Polyarylether-Based 2D Covalent-Organic Frameworks with In-Plane D-A Structures and Tunable Energy Levels for Energy Storage.

The robust fully conjugated covalent organic frameworks (COFs) are emerging as a novel type of semi‐conductive COFs for optoelectronic and energy devices due to their controllable architectures and easily tunable the highest occupied molecular orbital (HOMO) and the lowest occupied molecular orbital (LUMO) levels. However, the carrier mobility of such materials is still beyond requirements due to limited π‐conjugation. In this study, a series of new polyarylether‐based COFs are rationally synthesized via a direct reaction between hexadecafluorophthalocyanine (electron acceptor) and octahydroxyphthalocyanine (electron donor). These COFs have typical crystalline layered structures, narrow band gaps as low as ≈0.65 eV and ultra‐low resistance (1.31 × 10−6 S cm−1). Such COFs can be composed of two different metal‐sites and contribute improved carrier mobility via layer‐altered staking mode according to density functional theory calculation. Due to the narrow pore size of 1.4 nm and promising conductivity, such COFs and electrochemically exfoliated graphene based free‐standing films are fabricated for in‐plane micro‐supercapacitors, which demonstrate excellent volumetric capacitances (28.1 F cm−3) and excellent stability of 10 000 charge–discharge cycling in acidic electrolyte. This study provides a new approach toward dioxin‐linked COFs with donor‐acceptor structure and easily tunable energy levels for versatile energy storage and optoelectronic devices.