Aromatic Units Research Articles

On the relation of structure and dynamics in aromatic ring-tail structured liquids.

We present a combined X-ray and depolarized dynamic light scattering study on a series of liquid phenylalkanes, consisting of an aromatic phenyl ring attached to an alkyl chain of varying length. We study the influence of competing interactions of rings and chains on liquid structure and molecular reorientation. The X-ray scattering curves of the investigated liquids show a weak prepeak in a q range below the main scattering peak, indicating a certain degree of structure formation on a larger length scale than commonly found in simple liquids. As a function of temperature and alkyl chain length, we find that the observed prepeak shares some characteristics with that found for ionic liquids, suggesting a similar origin, i.e., domains of ring groups separated by alkyl chains leading to nanometer-scale structuring. Furthermore, with increasing chain length, the scattering curves show a distinct transition in the temperature dependence of the prepeak amplitude, which is mirrored in the activation energy of molecular reorientation, obtained via depolarized dynamic light scattering. As a possible interpretation, we suggest that ring-ring interactions control structure as well as dynamics for short alkyl chains but rapidly lose influence above a certain alkyl chain length. Since phenylalkanes are among the most simple representatives of liquids consisting of aromatic and non-aromatic units, we regard this work as a proof of concept to study the coupling of structure and dynamics in liquids with competing interactions weaker than both Coulombic interactions and hydrogen bonding.

Determination of a suitable molar absorption coefficient (ε) for lignin analysis of fibrous plants using the CASA method.

Determination of a suitable molar absorption coefficient (ε) for lignin analysis of fibrous plants using the CASA method.

Development and application of new nickel-based cholesteryl chloroformate gelator for the remediation of oil spillage in water

BackgroundOil spills have caused significant harm to human health, marine life, and the environment, prompting numerous remediation efforts but with limitations. This study explores the development of a nickel-based gelator (A(LS)2) for oil spill clean-up in water. The objectives used to achieve the aim of this study include: synthesis of a nickel metal complex linker unit (LU), synthesis of aromatic linker unit (AL) using an isophthaloyl chloride aromatic unit and LU, characterisation of the synthesised AL, and grafting of cholesteryl chloroformate in the AL to synthesise the gelator. The synthesised AL and gelator were coded NiAL and NiGe, respectively, and were characterised.ResultsFragments of the synthesised compound corresponding to the proposed structure were found using GC–MS, and their diameters were 5.9 μm for NiAL and 47.0 μm for NiGe. FT-IR spectroscopy showed functional groups which include secondary amine and aromatic rings in NiGe, as well as secondary amine aromatic rings, alkane, and aromatic overtones in NiGe. Finally, TGA showed that NiGe was stable at temperatures up to 445 °C. NiGe formed a gel with petroleum motor spirit (PMS), kerosene (KSE), and crude oil (COL) in a maximum time of 6.5 min. The Tgel (at 2 mg) value and sorption capacities were 44 °C and 5.8 ± 0.8 gg−1 for KSE, 39 °C and 3.7 ± 0.2 gg−1 for PMS, and 58 °C and 4.2 ± 0.7 gg−1, respectively. NiGe had a removal efficiency of 92% for COL, 90% for PMS, and 84% for KSE. NiGe could be recycled for up to five cycles. For better results, 0.5 g of NiGe formed gels with 4.20 mL of KSE, 4.60 mL of PMS and 5.42 mL of COL, which were subsequently removed from polluted water. Nickel-based organometallogelator (NiGe) was successfully synthesised and applied for oil spill clean-up in water; the gelator remediated crude oil, petroleum motor spirit and kerosene, respectively, from contaminated water; NiGe CuGe is recyclable; hence, scooped oil can be recovered and CuGe reused for several cycles, and oleophilicity makes CuGe, which is thermally stable and selective, best in biphasic oil–water mixture separation.ConclusionsA nickel-based gelator with an A(LS)2 network, which is stable at high temperatures, environmentally friendly, crystalline, and recyclable, has been successfully synthesised and used to remove KSE, PMS, and COL from water.

Advanced Strategy for High-Performance A-D-A'-D-A Type Non-Fused Ring Electron Acceptors with Nitrogen Heterocyclic Cores.

The development of nonfused ring electron acceptors (NFREAs) has garnered significant attention due to their simplified molecular design and cost-effectiveness. Recent advancements have pushed the power conversion efficiency (PCE) of NFREAs beyond 19%. Despite these advantages, most NFREAs adopt A-D-A structures, where the electron-donating core is typically a benzene ring substituted with fluorine or alkoxy groups. This design restricts the tunability of energy levels, and the selection of substituents for benzene rings as central units is relatively constrained, which hampers further optimization of material properties. In this work, we designed three A-D-A'-D-A structured fully NFREAs featuring distinct nitrogen heterocyclic cores: linear-shaped TT, star-shaped TYT, and quad-rotor-shaped TTVP. The nitrogen-containing aromatic units, typically strong electron-withdrawing groups, enable precise tuning of energy levels. Moreover, these electron-withdrawing cores enhance molecular rigidity, facilitating efficient π-π stacking and improving electron mobility. Although these NFREAs share identical π-bridges and terminal groups, their unique nitrogen heterocyclic cores exert divergent effects on photovoltaic performance. Theoretical calculations reveal that TT and TTVP exhibit higher electron affinity, greater absorption intensity, lower exciton binding energy, and higher electron mobility compared to the high-performance reference NFREA, TBT-26. Notably, TTVP, featuring an electron-withdrawing core and four terminal groups, exhibits exceptional electronic properties. It achieves the highest electron affinity, the narrowest bandgap of 1.76 eV, and a predicted electron mobility of 4.43 × 10-4 cm2 V-1 s-1, surpassing TBT-26. These findings underscore the potential of nitrogen heterocyclic cores in diversifying NFREA design and advancing the development of next-generation high-performance NFREAs.

Synthesis and degradation behavior of self-immolative polymer derived from vanillyl alcohol as a biodegradable aromatic unit

Synthesis and degradation behavior of self-immolative polymer derived from vanillyl alcohol as a biodegradable aromatic unit

Effects of the Central Unit Structure, Lateral Substitution and Symmetry on the Mesomorphic Behavior of Some Bent-Core Azoester Derivatives.

We report here the synthesis and characterization of some new bent-core asymmetric compounds derived from resorcinol whose thermal behavior has been analyzed by comparison with their analogs derived from 1,3-disubstituted benzene and 2,7-dihydroxynaphthalene containing azoester aromatic units and alkyl chain end. The asymmetric structures contain 4-(4-alkyloxyphenylazo)-benzoyl and 4-methoxy-benzoyl or 3-bromo-4-methoxy-benzoyl as side arms. The investigations have been carried out to reach a better understanding of the structure-properties relationship in such bent-shaped compounds. We observed that a change in molecular structure like the nature of the central core, the symmetry of the structure or the presence of polar lateral substituent influence not only liquid crystalline properties, but also the thermal behavior. The thermogravimetric analysis showed that the bent-core derivatives have a good thermal stability since the degradation of the compounds begins over the isotropization temperature. Theoretical calculations were performed to elucidate the behavior of the compounds. These can assist us in designing new molecules that exhibit specific mesomorphic properties.

Aliphatic-Aromatic Copolyesters with Waste-Sourceable Multiple Chain-Length Building Blocks.

Sourcing commodity polymers from sustainable alternative feedstocks, such as those derived from plastic waste or biobased resources, is a promising approach to alleviate the reliance on finite fossil fuel stocks for the production of virgin plastics. Linear aliphatic dicarboxylic acids of multiple chain lengths can be obtained from polyethylene (PE) waste, and their use in the synthesis of aliphatic polyesters has recently been demonstrated. To improve the materials' properties of polyesters derived from multiple chain-length dicarboxylates, we herein combined this feedstock with terephthalate as an aromatic monomer unit to yield aliphatic-aromatic copolyesters. We established structure-property relationships for copolyesters derived from aliphatic dicarboxylates of multiple chain lengths (C4-C20) as a model for catalytic oxidation products of PE waste, or from 1,18-octadecanedioate as reference materials for polyesters from single, long chain length dicarboxylates. Thermal properties and solid-state structures were dominated by the ratio of aliphatic to aromatic monomer units rather than the identity of the aliphatic dicarboxylate or diol components. We demonstrated upscaling of the copolyester synthesis, as well as processability and mechanical properties of a multiple chain length copolyester, which showed comparable properties to the commercial polybutylene adipate-co-terephthalate. Finally, we showed an alternative production via catalytic transesterification and thus postmodification of premade polyesters, including postconsumer polyethylene terephthalate, as model waste sources.

Advanced Porous Aromatic Frameworks: A Comprehensive Overview of Emerging Functional Strategies and Potential Applications.

Porous aromatic frameworks (PAFs) are a fundamental group of porous materials characterized by their distinct structural features and large surface areas. These materials are synthesized from aromatic building units linked by strong carbon-carbon bonds, which confer exceptional rigidity and long-term stability. PAFs functionalities may arise directly from the intrinsic chemistry of their building units or through the postmodification of aromatic motifs using well-defined chemical processes. Compared to other traditional porous materials such as zeolites and metallic-organic frameworks, PAFs demonstrate superior stability under severe chemical treatments due to their robust carbon-carbon bonding. Even in challenging environments, the chemical stability and ease of functionalization of PAFs demonstrate their flexibility and specificity. Research on PAFs has significantly expanded and accelerated over the past decade, necessitating a comprehensive overview of key advancements in this field. This review provides an in-depth analysis of the recent advances in the synthesis, functionalization, and dimensionality of PAFs, along with their distinctive properties and wide-ranging applications. This review explores the innovative methodologies in PAFs synthesis, the strategies for functionalizing their structures, and the manipulation of their dimensionality to tailor their properties for specific potential applications. Similarly, the key application areas, including batteries, absorption, sensors, CO2 capture, photo-/electrocatalytic usages, supercapacitors, separation, and biomedical are discussed in detail, highlighting the versatility and potential of PAFs in addressing modern scientific and industrial challenges.

Synthesis of Dendritic Oligo-Glycerol Amphiphiles with Different Hydrophobic Segments to Improve their Performance as Nanocarriers.

A new class of non-ionic dendritic amphiphiles has been developed from biobased chemicals, in particular glycerol-based dendrons coupled to commercially available acids via the Steglich esterification process. These non-ionic amphiphiles are functionalized with different hydrophobic segments to investigate the contribution of the same towards their guest transport behaviour. Therefore, different alkyl chains i.e, C8 and C12, as well as two different aromatic units were introduced as a hydrophobic segments and G1-oligo-glycerol as a hydrophilic segment. Their physicochemical properties were characterized by different techniques such as dynamic light scattering and fluorescence measurements. The results show that these amphiphiles form a very uniform micellar supramolecular structures that is independent of the hydrophobic system. The critical micelle concentration for the prepared non-ionic amphiphiles was found to be in the range of 0.3 to 1.8 mg/mL, which depend on the type of hydrophobic units. The encapsulation capacities of the amphiphiles were tested using Nile Red and Nimodipine as model dye and drug, respectively. The encapsulation studies showed a preference for C12- and pyrene-based amphiphiles through relatively different mechanisms unraveled by molecular dynamics (MD) simulations. Further, the cytotoxicity and cellular uptake of these systems as well as the release profiles were investigated.

Synergy-Promoted Specific Alkyltriphenylphosphonium Binding to CB[8

Biological substrate specificity ensures that organisms interact accurately with biomolecular receptors, crucial for key functions such as signaling and immunity. Nevertheless, this phenomenon is still poorly understood, with host-guest chemistry offering a suitable platform for studying simplified models. Herein, we report an in-depth study of the host-guest chemistry of alkyltriphenylphosphonium cations with cucurbit[8]uril (CB[8]), initiated by the serendipitous discovery of salt forming a tightly bound pseudoheteroternary 1:1 complex with CB[8]. A first generation of model substrates was designed to explore an unusual binding mode characterized by the simultaneous introduction of two distinct guest fragments within the host cavity. Structural features of the complexes were elucidated using ESI-MS and NMR 1D/2D techniques; thermodynamic properties were assessed by isothermal titration calorimetry, and kinetic parameters were derived from selective inversion-recovery NMR. Experimental results aligned well with electronic structure calculations, revealing a reproducible binding motif with submicromolar affinities. This peculiar complexation mode involves a synergistic effect caused by steric crowding around the P+ atom, facilitating the insertion of two aromatic units into CB[8] while hindering association with CB[7]. Based on these findings, a second generation of minimalistic substrates was developed, preserving the synergistic interaction mode and exhibiting specific binding to CB[8].

Maleic Anhydride‐Based Polymeric Pour Point Depressants for Crude Oils: Select the Right Additive to Save Energy

AbstractModifying the wax crystal habit is useful for transporting and processing crude oil at low temperatures. Various polymeric pour point depressant (PPD) additives can aid in this maneuver differently. Various morphologies of polymeric additives (like comb, brush, centipede, etc.,) have been shown to lower the pour point of crude oil by providing several nucleation sites for wax precipitation. Out of the large array of materials available, it is challenging to forecast which one will act as a wax‐crystal modifier on the crude oil under consideration. We propose, in this study, a detailed classification of wax‐crystal modifier additives based on criteria such as linear or branched copolymers, the presence of crystalline or amorphous segments, aromatic units and their positions (such as in the backbone or branch), the ability to self‐assemble or aggregate, etc. Accordingly, we synthesized additives from the maleic anhydride class having three different morphologies namely brush, combs, and centipedes, through free radical polymerization (FRP). The detailed characterization of these additives was carried out using structure‐sensitive techniques, such as 1H nuclear magnetic resonance, Fourier transform infrared spectroscopy, thermogravimetric analysis, and gel permeation chromatography. To evaluate the real‐time performance of the as‐synthesized additives, we selected crude oils from the South Kadi (SK), Limbodara (LM), and Nada (ND) oil fields of the Cambay basin, Gujarat, India having different levels of wax and asphaltenes. The rheological parameters of crude (with and without additive) were investigated using an Advance Rheometer AR‐500. Depending on the additive capability to self‐aggregate and the composition of the crude oil, the additive AMI‐3 is the most effective for ND, EST‐2 for LM, and A‐18S for SK crude oils. Their 1000 ppm dose can reduce the pour point of these crudes up to 18 °C and improve their rheological parameters accordingly. Finally, we propose the mechanisms of pour point depression by these as‐synthesized additives and carry out the microscopic imaging of the precipitated wax crystals from the blank and additive‐treated crude oil.

Design and Preparation of Soluble Polyimide Binder With Random Copolymerized Rigid‐Flexible Segments for Lithium Ion Batteries

ABSTRACTBinders play a critical role in the preparation and operation of electrodes in lithium‐ion batteries (LIBs). Developing new binding materials with high affinity to Li ions and resistance to higher voltages was desirable for the practical applications of LIBs. In this work, soluble polyimide binder (PI) with random copolymerized rigid‐flexible segments were synthesized and evaluated as cathode binder for the typical lithium iron phosphate cathode material in terms of cycling performances, rate capability, and electrochemical impedance. By introducing the polar and soft ether segment into the rigid PI chains, the NMP‐soluble PI precursors were obtained. The rigid‐flexible segments in the PI binders work synergistically during the electrochemical process, in which the rigid segments of aromatic units with strong lithiophilic CO group provided the necessary mechanical support and affinity with electrolytes, while the flexible segments endow the high solubility and buffer effect to the volume change during the charge/discharge process. Moreover, the 3,5‐diaminobenzoic acid (DABA) working as the crosslinking unit was introduced during the synthesis and the addition ratios were optimized. The as‐optimized PI binders exhibited superior rate performances and comparable cycling stability when compared with the commercial PVDF binder, demonstrating the great potential for PI binder in the LIBs systems.

Red Room Temperature Phosphorescence from Lignin

AbstractMaterials with red room‐temperature phosphorescence (RTP) derived from sustainable resources are crucial but rarely reported. Here, we produced red RTP materials from lignin. Lignin was covalently modified with Upy (1‐(6‐isocyanatohexyl)‐3‐(6‐methyl‐4‐oxo‐1,4‐dihydropyrimidin‐2‐yl) urea) to obtain Lig‐Upy. The Upy in the Lig‐Upy promoted the interaction between the aromatic units of lignin and reduced energy gaps of these molecules. As a result, Lig‐Upy exhibited red RTP centered at 625 nm with a lifetime of 24.2 ms. Moreover, the hydrogen bonding interactions in Lig‐Upy varied when embedded into different matrices, such as polyvinyl alcohol (PVA) or sodium montmorillonite (MTM), inducing a change in RTP wavelength and lifetime. Utilizing these properties, Lig‐Upy was used as building blocks for producing materials exhibiting time‐dependent phosphorescent colors (TDPCs). Such TDPCs materials have exhibited great potential for visual decorations, information encryption and anti‐counterfeiting logos for medicine bottles.

Intrinsically stretchable fully π-conjugated polymers with inter-aggregate capillary interaction for deep-blue flexible inkjet-printed light-emitting diodes

Fully π-conjugated polymers consisting of plane and rigid aromatic units present a fantastic optoelectronic property, a promising candidate for printed and flexible optoelectronic devices. However, obtaining high-performance conjugated polymers with an excellent intrinsically flexible and printable capacity is a great challenge due to their inherent coffee-ring effect and brittle properties. Here, we report an asymmetric substitution strategy to improve the printable and stretchable properties of deep-blue light-emitting conjugated polymers with a strong inter-aggregate capillary interaction for flexible printed polymer light-emitting diodes. The loose rod-shaped stacking of asymmetric conjugated polymers chain in the precursor printed ink makes it easier to improve the intrinsic stretchability of inkjet-printed films. More interestingly, the anisotropic shape rod-like aggregate of conjugated polymers chains also induced a strong capillary interaction and further suppressed the coffee-ring effect, which is more likely to allow for uniform deposition during printed processing and form uniform printed films.

Theoretical insights into spacer molecule design to tune stability, dielectric, and exciton properties in 2D perovskites.

Two-dimensional organic-inorganic perovskites have garnered extensive interest owing to their unique structure and optoelectronic performance. However, their loose structures complicate the elucidation of mechanisms and tend to cause uncertainty and variations in experimental and calculated results. This can generally be rooted in dynamically swinging spacer molecules through two mechanisms: one is the intrinsic geometric steric effect, and the other is related to the electronic effect via orbital overlapping and electronic screening. Herein, we design three types of spacer molecules, phenyl methyl ammonium (PMA), thiophene methyl ammonium (THMA), and furan methyl ammonium (FUMA), that adopt different aromatic units. We examine the influence of different aromatic spacers on the structural properties of the inorganic layer of the perovskite based on first-principles calculations and find that a marginal change in the aromatic ending group in the spacer ligand would trigger significant changes in the octahedral inorganic layer. We predict that using THMA and FUMA can improve the stability and increase the size of crystal domains because of enhanced binding between the organic and inorganic layers. Compared to the prototype phenyl-based perovskite (PMA)2PbI4, the thiophene-based perovskite (THMA)2PbI4 exhibits states closer to the band edge, thus boosting carrier transport across inorganic and organic layers. Compared with the perovskite using PMA as a spacer cation, the THMA-based perovskite demonstrates a higher dielectric constant and smaller exciton binding energy, suggesting that THMA is more suitable as an organic spacer and a good passivation agent in 3D perovskites. The difference in the screening ability of the molecules induces varying interlayer excitonic binding energy. Our work provides theoretical grounds for the engineering of spacer molecules toward high-efficiency light conversion of mixed perovskites.

Luminescent ultrashort peptide hydrogelator with enhanced photophysical implications and biocompatibility.

Luminescent peptide hydrogelators have garnered significant attention in biomedical sciences and materials chemistry due to their biological relevance and tunable photophysical features. In this work, we have designed and synthesized a novel ultrashort peptide hydrogelator comprising a tripeptide sequence (FFE) integrated with 1,8-naphthalimide (NI) as an aggregation-induced emissive unit having rich and tuneable photophysical properties. The hydrogelator could self-assemble and form a self-supporting hydrogel having a highly ordered intertwined network structure at pH 5.5 with a minimum gelation concentration of 1 wt/v%. Interestingly, due to the presence of the emissive unit, the assembly could demonstrate strong blue luminescence, which has been thoroughly investigated experimentally. Moreover, spectroscopic investigations and molecular dynamics simulation studies suggest the formation of a β-sheet structure through extended intermolecular H-bonding interactions within the peptide backbones and the strong π-π-stacking interaction among aromatic units, which drive the self-assembly and hydrogelation. The emissive unit of the peptide could arrange in a J-type aggregation pattern and adopt right-handed helical induced chirality in the assembled state. Additionally, the system could exhibit a high safety profile and excellent biocompatibility, when tested in a series of cell lines in vitro. Finally, the intracellular uptake of the system has been exploited, showcasing its luminescence characteristics for potential applications in cellular imaging. The luminescent system holds significant promise for advancing cellular imaging techniques, offering new avenues for research in the future. Briefly, this work highlights the importance of luminescent ultrashort peptide hydrogelators for developing next-generation low-cost functional biomaterials.

Fractionation of lignin from corncob with high−yield p − coumaric acid production in deep eutectic solvents followed by pyrolysis to produce monophenols

Fractionation of lignin from corncob with high−yield p − coumaric acid production in deep eutectic solvents followed by pyrolysis to produce monophenols

Structures, Chiroptical Properties, and Unexpectedly Facile Helical Inversion of Highly Elongated Anthracene-Fused Expanded Helicenes.

Helical fused anthracenes were elongated by fusing additional aromatic units at both ends to yield novel expanded helicenes. Compounds [5]HA2N and [7]HA consisting of 19 and 21 benzene rings, respectively, were synthesized by fourfold cycloisomerization of the corresponding terminal alkyne precursors. The helical structures were confirmed by X-ray crystallographic analysis, where the aromatic frameworks stacked effectively with the helical turn numbers exceeding two. The enantiomers of the two compounds were resolved by chiral HPLC. Whereas [5]HA2N readily underwent enantiomerization at room temperature at the barrier to enantiomerization of 91 kJ mol-1, the barrier was enhanced to 99 kJ mol-1 for the long analog [7]HA. The enantiomers of [7]HA exhibited strong responses in the circular dichroism (CD) and circularly polarized luminescence (CPL) spectra, as scaled by dissymmetry factors |gabs|=0.034 and |glum|=0.012. Theoretical calculations by the r2SCAN-3c method suggested stepwise mechanisms for the enantiomerization via helical inversion with acceptable barrier heights. The unexpectedly flexible nature of the aromatic frameworks of [5]HA2N and [7]HA was discussed on the basis of the proposed mechanism.

Insights Into the Role of π‐Electrons of Aromatic Aldehydes in Passivating Perovskite Defects

AbstractCarbonyl‐containing aromatic ketones or aldehydes have been demonstrated to be effective defect passivators for perovskite films to improve performances of perovskite solar cells (PSCs). It has been claimed that both π‐electrons within aromatic units and carbonyl groups can, separately, interact with ionic defects, which, however, causes troubles in understanding the passivation mechanism of those aromatic ketone/aldehyde molecules. Herein, we clarify the effect of both moieties in one molecule on the defect passivation by investigating three aromatic aldehydes with varied conjugation planes, namely, biphenyl‐4‐carbaldehyde (BPCA), naphthalene‐2‐carbaldehyde (NACA) and pyrene‐1‐carbaldehyde (PyCA). Our findings reveal that the π‐electrons located in the conjugated system do not directly present strong passivation for defects, but enhance the electron cloud density of the carbonyl group augmenting its interaction with defect sites; thereby, with the extended conjugation plane of the three molecules, their defect passivation ability is gradually improved. PSCs incorporating PyCA with the most extended π‐electrons delocalization achieve maximum power conversion efficiencies of 25.67 % (0.09 cm2) and 21.76 % (14.0 cm2). Moreover, these devices exhibit outstanding long‐term stability, retaining 95 % of their initial efficiency after operation for 1000 hours at the maximum power point.

Bio-based polyesters derived from 2,6-pyridinedicarboxylic acid with tunable thermal and crystallization properties

In this article, several novel polyesters containing renewable 2,6-pyridinedicarboxyl aromatic units are synthesized by direct polycondensation. The obtained polyesters are chemically identified by Fourier transform infrared and proton nuclear magnetic resonance. Their average weight molar masses vary with the diol chain length, from M w = 2 600 g·mol−1 to M w = 51 600 g·mol−1. These polyesters exhibit high thermal stability with thermaldegradation temperatures (T max) ranging from 330 to 399 °C. Among them, the polyesters containing bicyclic diols (isosorbide IS and isomannide IM) are amorphous and show glass transition temperatures (T g) up to 163 °C and 176 °C respectively. Besides, polyesters containing linear diols are semi-crystalline with melting temperatures (T m) ranging from 110 to 189 °C. The semi-crystalline nature is verified by X-ray diffraction and polarized optical microscopy. These results disclose that 2,6-pyridinedicarboxylic acid (PDA26) is attractive as a bio-occuring molecule for preparing both high T g and semi-crystalline polymers when finely choosing the diols.