Environment-friendly Approach Research Articles

Polyaniline-coated nanoparticles of zinc oxide and copper oxide as antifungal agents against Aspergillus parasiticus.

Aspergillus parasiticus (A. parasiticus) is known for producing aflatoxins and is a major threat to the food industry. Green synthesis of nanoparticles (NPs) is a cost-effective and environment-friendly approach. A variety of NPs have been explored as antifungal agents; however, their antifungal characteristics need to be further enhanced to compete with traditional fungicides. The present work describes the green synthesis of ZnO and CuO NPs by precipitation method using aqueous leaf extract of Manilkara zapota and their surface modification through polyaniline (PANI). Still, there is no published study on the application of PANI-coated particles as antifungal agents against A. parasiticus and hence was the focus of this work. The polymer-coated NPs were synthesized, characterized, and investigated for their antifungal properties against A. parasiticus. Textural and structural characterization of PANI-coated and non-coated ZnO and CuO NPs were confirmed through FT-IR, SEM, and XRD techniques. The PANI-coated NPs presented higher fungal growth inhibition (%) as compared to the non-coated ones. The maximum inhibition of 77 ± 2% (n = 3) was shown by PANI/ZnO NPs at a concentration of 12 mmol L−1 and 72 h of incubation. The non-coated NPs presented a lower inhibition rate with respect to their coated NPs, thus justifying the role of polymeric coating in improving antifungal efficiency.

Superhydrophobic covalent organic frameworks prepared via nucleophilic substitution reaction for effective oil/water separation

Oil-spill accidents have caused great loss of valuable natural resources to marine ecosystems. Thus, it is highly desirable to develop an efficient and environment-friendly approach for oil/water separation. Herein, we report a bottom-up strategy for the synthesis of superhydrophobic covalent organic frameworks (COFs) and show an in situ growth approach for the fabrication of COF-functionalized foam. 2,5-dihydroxyterephthalaldehyde (Da) is first modified with octyl to form superhydrophobic monomer Da-octyl via nucleophilic substitution reaction. Da-octyl was then condensed with 1,3,5-(1,3,5-Triazine-2,4,6-triyl)trianiline (Tz) to synthesis a superhydrophobic COF TzDa-octyl. TzDa-octyl can be used in complex environment due to the high thermal and chemical stability. Besides, TzDa-octyl can be in situ growth on the melamine foam for oil/water separation. The prepared foam exhibits high adsorption capacity and good reusability for oil/water separation. This work not only offers a strategy for the construction of functional COFs, but also opens an avenue for the growth of COFs on different substrates for oil/water separation.

Scalable preparation of high-dispersion g-C3N4via GQDs-assisted ultrasonic exfoliation for accelerating cement hydration

Tremendous progress has been made in the employment of two-dimensional (2D) nanomaterials in cement composites. However, high cost and poor dispersion of 2D nanomaterials immensely hinder their extensive use. To address these issues, in this work, a scalable, simple, and eco-friendly graphene quantum dots (GQDs)-assisted ultrasonic exfoliation approach was elaborately designed to efficiently delaminate and disperse bulk g-C3N4 (B–CN), thereby obtaining low-cost and high-dispersion CN (G-CN). And the effect of B–CN, B–CN exfoliated without GQDs (U–CN) and G-CN on cement hydration was comprehensively investigated for the first time. Specifically, G-CN possessed a remarkably higher dispersion and a larger specific surface area (32.92 m2 g−1) increasing by 44.45% and 183.55% than U–CN and B–CN, respectively. And based on characteristics of G-CN and properties of GQDs, the exfoliation mechanism of g-C3N4 was ascribed to intercalation, exfoliation, and surfactant effects of GQDs. More importantly, highly dispersed G-CN was more propitious to accelerate cement hydration and refine microstructure, thereby dramatically boosting the compressive strength of cement paste at 7-day curing by 10.1% and 25.0% compared with that of U–CN and B–CN, respectively. This work not only provided a scalable, facile and environmentally-friendly approach to efficiently fabricate well dispersive g-C3N4, but also firstly testified their evident accelerating effect on cement hydration. These findings would be conducive to advancing the application of 2D nanomaterials in cement composites.

Removal of High-Concentration Sulfate from Seawater by Ettringite Precipitation

Due to the worldwide scarcity of fresh water, seawater becomes an alternative base fluid in hydraulic fracturing for oil and gas production. However, the injection of seawater that contains high concentration of sulfate will induce the scale formation and thus reduce hydrocarbon production. One of the most effective ways to solve this problem is to remove sulfate ions from seawater before fracturing application. The objective of this study is to develop an effective and environment-friendly approach to remove sulfate ions from seawater based on coprecipitation of SO42− with NaAlO2 and CaO as ettringite (Ca6Al2(SO4)3(OH)12·26H2O). Residual sulfate concentration in treated seawater was determined when NaAlO2 and CaO dosed at different molar ratios to sulfate. Results showed the efficiency of sulfate removal was more than 90% (4290 ppm to ∼400 ppm) when Al : Ca : S = 2 : 6 : 1. It was found the sulfate precipitation completed in 15 mins with stirring under an alkaline condition (pH ≈ 12) and was not affected by temperature (15°C to 45°C). Increasing the Na+ concentration from 0 to 25,000 ppm in waters resulted in the increment of residual sulfate concentration from 250 to ∼600 ppm, decreasing the removal efficiency. Besides, the analysis of Ca2+ and Mg2+ in treated seawater showed the Ca2+ concentrations were on the similar level as that before the treatment and Mg2+ was removed in the precipitation process, which is beneficial to the application of the treated seawater. The morphology and element analysis of the collected precipitates showed that the ettringites were in a layered shape with composition between Ca6Al2(SO4)3(OH)12 and Ca4Al2(SO4)(OH)12 at the optimized chemical dosage; therefore, the developed ettringite precipitation method could effectively remove sulfate from seawater without toxic chemicals involved, which benefits seawater hydraulic fracturing in an economic way, and this contributes to water sustainability.

One-pot green synthesis of ZnO nanoparticles using Scoparia Dulcis plant extract for antimicrobial and antioxidant activities.

Nanostructured Zinc oxide (ZnO) materials have attained exciting research interests among various metal oxide nanoparticles due to their unique features. Thus, the scope of applications for ZnO nanoparticles (ZnO NPs) is vast and efficient. The current study demonstrates a simple and environmental-friendly approach for the synthesis of ZnO NPs using the extract of the Scoparia Dulcis. Scoparia Dulcis is a common medicinal plant in Kerala (India) that is traditionally used for its medicinal properties. Morphological characterizations of the as-synthesized ZnO NPs were evaluated using X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), and field-emission scanning electron microscopy (FESEM). The results revealed that ZnO NPs showed pebble-like morphology and possessed an average particle size of ~ 20 nm. Further, antibacterial and antifungal activities of as-prepared ZnO NPs were investigated against E. coli, Staphylococcus aureus, as well as Candida albicans, and Aspergillus niger, respectively, using the agar-well diffusion method. The results revealed that the prepared ZnO NPs shows excellent antimicrobial activity against the examined microorganisms. Moreover, the antioxidant activity of the as-synthesized ZnO NPs was evaluated using the DPPH assay, which indicated an excellent IC50 value of 1.78 μg/mL that shows high antioxidant activity. All these results proved that the S. dulcis plant extract-mediated synthesis method is a simple, low-cost, eco-friendly procedure for preparing efficient ZnO NPs for biomedical applications.

Transformation of Buxus sinica into high-quality biocomposites via an innovative and environmentally-friendly physical approach

There are abundant shrub species resources in the world, but their natural defects such as short growth cycle, loose material, easy cracking plus deformation, and low strength have seriously affected their scope of application. With the ever-decreasing of natural forest resources, the research on quality improvement and efficiency enhancement of small-diameter timber of artificial shrub represents a promising effort in global continual advancement. In this study, an innovative and environmentally-friendly approach was developed to produce high-quality biocomposites from Buxus sinica. Pretreatment of Buxus sinica in an alkaline sodium sulfite solution had degraded part of the amorphous structure from the cell walls. The fiber cell walls collapsed completely in further thermoforming, resulting in a closer alignment of the fiber filaments before the formation of high-strength physical and chemical bonding, expanded crystalline regions, and enhanced dimensional stability. The resulted biocomposites show higher ultimate tensile strength (5.31 times) and ultimate flexural strength (5.22 times) than that of Buxus sinica. In addition, the preparation method also endows the biocomposites with excellent hydrophobicity and high chemical stability towards concentrated strong acid and alkali. Overall, this study reveals a promising method to effectively transform the artificial shrub resources into high-quality biocomposites with versatile applications.

Design and Synthesis of Fluoro‐containing Hypervalent Iodane (III) Reagents for Visible‐light‐triggered Cyclization of Alkynoates to 3‐Fluoroalkylated Coumarins

AbstractA series of novel fluoro‐containing hypervalent iodane (III) reagents was designed and synthesized. By employing these novel hypervalent iodane (III) reagents, an efficient visible‐light‐triggered radical cyclization of alkynoates to diversely 3‐fluoroalkylated coumarins was developed under metal free condition. It provided an alternative and environmental friendly approach for the installation of 3‐fluoroalkyl motif into synthetically valuable building block coumarins.

A makeup remover-inspired chitosan-based emulsion for heavy oil removal in oily sludge treatment

During oil production processes, oily sludges are inevitably produced and accumulating, which are extremely hazardous to our living environment. Due to their complex compositions mainly containing oil-contaminated solids and emulsified water and oil, it has been always a great challenge to treat oily sludges before solids can be properly disposed, and oil and water can be recycled. In this study, inspired by the makeup remover and for the first time, a chitosan-based emulsion was developed to treat oily sludges. The emulsion can efficiently remove the heavy oil from solids with removal efficiency of ∼94.7%–98.0% varying with solution pH, sludge to emulsion ratio, and settling time. It has been revealed that the oil liberates from solid surfaces resulted from the wettability alteration of the solid surface in emulsion solution due to the decrease in oil/water interfacial tension as well as oil layer softening by the solvent penetration. A rag layer formed after oil liberation due to the unresolved dispersed oil droplets carrying solid particles, which was further treated by the addition of ∼1.4–6.1 wt‰ of HCl to the mixture. With HCl addition, the dispersed oil drops were found to coalesce attributed the charge neutralization and interfacial property change of chitosan molecules at oil/water interfaces evident from the zeta potential measurement. Our work proposes an environmental-friendly approach to treat oily sludges, and provides valuable information on the oil removal mechanisms using emulsion solution shielding lights on the development of emulsion-based treating technology for both oily sludge and oil-contaminated solids treatment.

Porous pyroelectric ceramic with carbon nanotubes for high-performance thermal to electrical energy conversion

The recycling of low-grade thermal energy from our surroundings is an environmental-friendly approach to contribute to sustainability, which remains a grand challenge. Herein, a high-performance porous pyroelectric ceramic formed using carbon nanotubes (CNT) is designed and fabricated using a modified solid-state reaction technique. Localized characterization of PMN-PMS-PZT and PMN-PMS-PZT with 0.3 wt% CNT additions by piezoelectric force microscopy suggests that the presence of porosity and defects in grains can restrict the reversal of domains and weaken the local piezoresponse; that is due to the influence of porosity on the electric field, domain morphology, or screening effects induced by defects at the pore surface. More importantly, the porous ceramics showed enhanced figure of merits, including voltage responsibility and energy harvesting figure of merit, compared to the dense ceramic. The harvested energy increased by 208% when the 0.3 wt% of CNT was added to produce porosity, which has a potential application in thermal energy harvesting and sensing system.

Microextraction by packed sorbent of polycyclic aromatic hydrocarbons in brewed coffee samples with a new zwitterionic ionic liquid-modified silica sorbent

A simple, sensible, and high-throughput method was developed for determining selected polycyclic aromatic hydrocarbons (PAHs) from brewed coffee samples. Three sorbents based on ionic liquids supported on silica particles were synthesized, characterized, and assessed as extraction phases in microextraction by packed sorbent (MEPS). A synthesized zwitterionic ionic liquid-based sorbet (zIL@SiO2) exhibited superior extraction capabilities. The most relevant influencing parameters on the zIL@SiO2-based MEPS performance were systematically investigated. Under selected conditions, the MEPS method took less than 5 min and showed excellent linearity, precision, and trueness, from 5 to 100 µg L-1 (R2 from 0.998 to 0.999). The method's accuracy was between ca. 73.34% and 118.66%; the precision, evaluated as the coefficient of variance (% RSD) for intraday and interday analysis, varied from 0.21% to 11.50%. The recovery percentage was 81.06–118.81%, and the detection limits (S/N = 3) ranged between 1.0 and 1.5 μg L-1. The developed zIL@SiO2 -MEPS-GC-MS method was applied to investigate 13 different Colombian and Brazilian coffee samples, allowing the detection and quantification of dangerous PAHs in the studied samples. The method is demonstrated to be a straightforward, fast, confident, and environment-friendly approach for surveillance pollutants in complex beverage samples.

Selective laser sintering 3D-Printed conductive thermoplastic polyether-block-amide elastomer/carbon nanotube composites for strain sensing system and electro-induced shape memory

A novel mixed powders made up of laboratory-made thermoplastic polyether-block-amide (TPAE) and multiwalled carbon nanotubes (MWCNTs) for the selective laser sintering (SLS) 3D printing have been prepared through an environment-friendly approach and the carbon nanotube conductive network structure is established in the SLS-processed nanocomposite devices. The electrical properties, strain sensing property and electro-induced shape memory effect of flexible TPAE/MWCNTs nanocomposites are fully investigated. The conductivity of TPAE/MWCNTs nanocomposites increases as the MWCNTs content increases owing to the interconnected MWCNTs conductive network. During compressing test with different deformation strain and speed, the SLS-processed flexible sensor exhibits a regular, fast, sensitive and stable cyclic response which shows its great potential for artificial electronic skin, human-machine interface and health monitoring. The TPAE-5.0C nanocomposite also possessed an excellent shape recovery ability during electro-induced shape memory cycle which was triggered by Joule heat under DC voltage. The MWCNTs-TPAE powder prepared here provides a novel material for SLS 3D-printing and the SLS-processed devices with outstanding performance and multiple functions will be very useful for developing flexible and lightweight wearables in the future.

Optimized titania nanotubes photoanode mediated photoelectrochemical oxidation of ammonia in highly chlorinated wastewater via Cl-based radicals

Efficient removal of low-concentration ammonia from chlorinated wastewater is a challenge for decentralized wastewater treatment due to its notorious environmental effect and lethal influence on aquaculture. Photoelectrocatalytic (PEC) oxidation process is considered as an efficient and environment–friendly approach, whereas a low-cost and stable photoanode is crucial. In this study, TiO2 nanotubes (TNTs) photoanode (Ar–TNT–500 °C) with excellent physicochemical and photoelectrochemical properties was prepared by optimizing the parameters of anodization, including the voltage/times of anodization and the atmosphere/temperature of heat treatment. During the synthesis, the electrochemical and heat treatment processes promoted the formation of oxygen vacancies (OV) on the TNTs surface and enhanced its electrocatalytic activity. The optimized Ar–TNT–500 °C photoanode could selectively convert ammonia to N2 (86%) and a small amount of nitrate (14%). Radical quenching and probe experiments confirmed that the ClO produced by rapid quenching of OH and Cl by free chlorine dominated the selective degradation of ammonia in the synergistic process of photocatalysis and electrocatalysis. The cycle of chlorine-based radicals (ClO and Cl) and Cl− provided a continuous and efficient ammonia oxidation system, because chlorine-based radicals could efficiently and selectively oxidize ammonia and reduce the production of toxic (per) chlorate.

Effects of enzyme-assisted ultrasonic treatment to the properties of nanofibrils isolated from wheat straw

Abstract This study aimed to prepare cellulose nanofibrils (CNF) with tunable morphology and properties from wheat straw using enzyme-assisted ultrasonic treatment. The effects of different enzymatic hydrolysis duration on the morphology and the properties of the CNF were studied. The effects of different enzymatic hydrolysis duration on the morphology and the properties of the CNF were studied. AFM analysis showed that average height distribution for CNF-0 (without enzymatic pretreatment) decreased from 11.86 to 8.18 nm for CNF-4 (with the enzymatic hydrolysis duration of 4 h), while the crystallinity and water reserve value (WRV) for CNF-0 increased from 36 and 485% to 47 and 789% for CNF-4, respectively. The transmittance, wettability properties, and mechanical performances of CNF-based films were systematically studied. The results show that the film properties are highly dependent on the morphology of their corresponding CNF and can be effectively modulated by controlling the structural characteristics of CNF. The discoveries of this study provide an environment-friendly approach for the production of CNF with tunable morphology and fibril size, which can promote the production of cellulose-based nanomaterial as well as their related applications.

Influence of Copper Amendments on Soil Properties, Growth and Metal Accumulation by Mentha arvensis L.

A polyhouse study was conducted to assess the influence of copper amendments on the soil properties, plant growth parameters (fresh weight and plant height) and metal accumulation in Mentha arvensis L. The amendments of copper were 270, 500, 700 and 900 mg kg-1 in triplicate along with an unamended control. After 90 days of plant growth, the aerial parts of the plant were harvested and the physicochemical properties of the soil such as pH, EC, %OC, %OM and metal content in plant and soil were recorded. The pH and EC values were higher for the amendments as compared to the control. The pH (8.22) and EC (0.80 dS m-1) values were the highest for Cu270 mg kg-1 and Cu500 mg kg-1 amendments, respectively. The percentage of OC and OM was the highest (1.16%, 2.00%) for Cu500 mg kg-1. The plant height was maximum (36.30 cm) for the control plant while the fresh weight was maximum for Cu700 mg kg-1 amendment. The copper accumulation was observed to be the highest (19.3 mg kg-1) for the Cu500 mg kg-1 amendment and least (13.7 mg kg-1) for the higher amendment (Cu900 mg kg-1) showing that for all the amendments along with control, copper accumulation was within the permissible limit. Thus, growing medicinal and aromatic plants in the metal-rich soils can be a sustainable and environment-friendly approach to obtaining metal-free commercially important end products.

Evaluation of the dual-process approach for in-situ groundwater arsenic removal

ABSTRACT While the worldwide distribution of geogenic arsenic (As)-affected groundwater is highly overlapped with the areas with abundant groundwater, utilization of As-contained groundwater is an inevitable compromise in those areas where surface water is not enough for irrigation. Since the occurrence of As in groundwater is often accompanied by high iron (Fe) contents, the facilitation of As and Fe precipitation without adding additional oxidizers and adsorbents is considered an environmental-friendly approach to removing As in groundwater. In the present study, the oxidation/filtration dual-process with sprinkling height of 25 cm and 120 kg filter media efficiently increased the dissolved oxygen (DO) concentration (0.36–1.52 mg/L) and oxidation–reduction potential (ORP) (24–63 mV), which facilitated the formation of Fe oxides and As co-precipitation. The correlation of As removal efficiencies with their respective flow rates indicated that a decrease in groundwater Fe and an increase of Fe in sands and gravels filters as the flow rate increased evidenced the rapid oxidation of Fe to form the Fe hydroxides. In a 40-hour continuous aeration/filtration operation, As and Fe concentrations in groundwater were reduced by 79.5% and 64.88% within 40 hrs, respectively. The ease of filter replacement and cost-effectiveness in operation can be the major attractions and innovations for future field practices.

Synthesis of vildagliptin loaded acrylamide-g-psyllium/alginate-based core-shell nanoparticles for diabetes treatment

Diabetes mellitus has become a major public health concern all over the world. Vildagliptin is one of the antidiabeticdrug that can overcome the existing problem of this prevalent disease. Present study aims to synthesize and investigate the role of vildagliptin-loaded core-shell nanoparticle of grafted psyllium and alginate (VG@P/A-NPs) in anti-diabetes application. FTIR, SEM, XRD, 13CNMR and zeta analyzer were used for characterization of the core-shell nanoparticles (VG@P/A-NPs). The synthesized acrylamide-grafted-psyllium was also optimized through varying grafting parameters such as acrylamide and ceric ammonium nitrate (CAN) concentration, time and temperature to obtain the maximum yield of acrylamide-grafted-psyllium. Rheological analysis of pure psyllium, grafted psyllium and alginate were also performed. For biological studies, the first cytotoxicity of grafted psyllium and VG@P/A-NPs were examined on human lung adenocarcinoma cell line A549 in which it was observed that VG@P/A-NPs did not exhibited any toxicity. The antidiabetic potential of VG@P/A-NPs was investigated by glucose uptake assay, using TNF-α induced insulin resistance skeletal cell model using mouse muscle L6 cell line. The insulin signaling impaired cell line displayed a highly significant (p < 0.0001) dose-dependent increase in glucose uptake after treatment with increasing doses of VG@P/A-NPs.The drug release behavior of VG@P/A-NPs was examined at various pH and the highest drug release (98 %) was obtained at pH (7.4). The drug release kinetic data was following the Higuchi (R2 = 0.9848) kinetic model, suggesting the release of drug from vildagliptin-loaded grafted psyllium-alginate core-shell nanoparticles (VG@P/A-NPs) as a square root of time-dependent process and diffusion controlled. This study provides an economical and environment-friendly approach towards the synthesis of VG@P/A-NPs with antidiabetes applications.

Screening for resistance and susceptibility in some beetroot cultivars to root-knot nematode, Meloidogyne javanica

Aim: The present study was conducted to identify the resistance and susceptibility of beetroot cultivars against root-knot nematode, Meloidogyne javanica. Methodology: In this study, seven beetroot cultivars were screened against the root-knot nematode, Meloidogyne javanica, at the inoculum level of 1500 second-stage juveniles (J2s) per pot. Five replications of each cultivar of beetroot were used for screening and kept in a completely randomized design (CRD) at 25 ± 2 °C under greenhouse conditions. The data were subjected to ANOVA using SPSS-17 statistical software (SPSS Inc., Chicago, IL, USA). According to Duncan’s Multiple Range Test, the mean values were statistically compared and separated at P ≤ 0.05. Results: The results revealed that all seven cultivars of beetroot showed varying degrees of resistance and susceptibility to M. javanica. Among all the cultivars, three were moderately resistant, i.e., CG, DDR and Red Ace with the minimum number of galls (4.0, 8.0 and 7.0), and two were moderately susceptible, i.e., Atlas and Red Queen (28 and 22). Red Ruby (84) was found susceptible and Red Express was highly susceptible with the maximum galls (126). None of the cultivars were found to be highly resistant or immune. Interpretation: A positive and significant correlation was found between the number of galls and per cent reduction in plant growth parameters. From the results, it can be recommended that the use of resistant cultivars is an environment-friendly approach that can be used to manage the nematode density below the economic threshold level.

Virtual Evaluation of Insecticidal Potential of Fused Vip3Aa and Garlic Lectin against Fall Armyworm (Spodoptera frugiperda)

The use of transgenic crops to combat insect infestation has been proven to be an effective and environment-friendly approach. However, insecticidal proteins with a single mode of action are prone to the development of insect resistance. Researchers are now interested in combining insecticidal proteins to acquire multiple modes of action to address that problem. Here, we have performed a virtual evaluation of a fusion protein that was in silico constructed by combining the vegetative insecticidal protein (Vip3Aa) of Bacillus thurengensis and the garlic leaf lectin of Allium sativum (ASAL) with a fl exible peptide linker (GGGGS)3. Two fusion modes were conducted, one with ASAL as the N-terminus (AV) and the other where Vip3Aa is the N-terminus (VA) of the fusion construct. Molecular dynamics simulation of the fusion constructs (AV and VA) revealed their differences in conformational changes and compactness, with VA being more stable and favorable. Protein-protein docking studies against the fall armyworm aminopeptidase-N of S. frugiperda resulted in the identifi cation of interacting residues at the interface. A novel fusion protein proposed in this study would be valuable for rational design of potent insecticidal proteins with multiple modes of action.

Efficient marker-assisted breeding for clubroot resistance in elite Pol-CMS rapeseed varieties by updating the PbBa8.1 locus.

The online version contains supplementary material available at 10.1007/s11032-022-01305-9.

Room temperature phosphorescence of heavy-atom-free indole carboxylic acid/polyacrylamide: Low cost, long lifetime and good luminescent efficiency

Functional organics doped polymers have displayed tunable room temperature phosphorescence (RTP), emerging as promising applications in optical information encryption and organic electronic devices. However, the present doped polymer systems confront a difficulty of constructing a low-cost heavy-atom-free doped systems with ultra-long RTP lifetime and high luminescent efficiency by a facile and environmental-friendly approach, which retards large-scale and commercialized applications. In this work, based on indole derivatives of high quantum efficiency and water-soluble polyacrylamide (PAM) of high H-bond capacity, several kinds of commercialized indole carboxylic acid (ICA), with different extended benzoic acid arms, were respectively combined with PAM based on intermolecular hydrogen bonding by water-promoted dispersion, thereby effectively retarding non-radiative transition. The average RTP lifetimes of 5-ICA/PAM-0.3% and IDCA/PAM-0.3% films could reach 1.997 and 0.992 s respectively at room temperature. Moreover, to adjust the positions of substituted carboxy groups, the luminescent colors can be tuned from blue to yellowish green. Anti-counterfeiting patterns can be facilely fabricated with ICA-doped PAM by environmental-friendly and low-cost screen printing and brush writing, which gives an insight into commercialized production for information security.