Dual-fluorescent starch biopolymer films containing 5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine powder as a functional nanofiller DOI Creative Commons
Anita Kwaśniewska,

Katarzyna Orzechowska,

Klaudia Rząd

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Dec. 28, 2024

Physical and photophysical properties of starch-based biopolymer films containing 5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine (NTA) powder as a nanofiller were examined using atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), stationary UV-Vis fluorescence well resonance light scattering (RLS) time-resolved measurements, where possible, analyzed with reference to pristine NTA solutions. AFM studies revealed that the addition into starch did not significantly affect surface roughness, all displaying similar Sq values ranging from 70.7 nm 79.7 nm. Similarly, Young's modulus measurements showed no significant changes after incorporating 1,3,4-thiadiazole. Adhesion water contact angle assessments demonstrated maintained high hydrophilicity (water wetting) across films. Color analysis corroborated anticipated trend, showing increasing additive content resulted in decreased lightness increased yellowness. Interestingly, however, while polar isopropanol solvent at low concentration, shows typical single-band emission, centered 410 slight enhancement band on long-wavelength side around 530 nm, its incorporation matrices results appearance dual signal maxima 430 Concentration-dependence emission experiments, demonstrating even increase amount solution, an additional, weak emerged within spectral range corresponding intensive film, along performed quantum-chemical studies, including both monomeric aggregated (dimer trimer) models, conclusively unveil observed starch/NTA is due molecular aggregation effects resulting aggregation-induced emission. This study underscores potential biobased polymer films, furnishing them new features without substantially altering their thus enabling extended applications.

Language: Английский

Assessment of the Microbiological Potential and Spectroscopic Properties of New Imino-1,3,4-Thiadiazoles Showing the ESIPT Effect Strongly Enhanced by Aggregation DOI Creative Commons

Edyta Chruściel,

Lidia Ślusarczyk, Bożena Gładyszewska

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(3), P. 531 - 531

Published: Jan. 24, 2025

There is currently a growing interest in imino derivatives of compounds such as thiadiazoles and other groups whose extended π-electron systems enhance their photophysical properties. These also show low toxicity strong antifungal activity, making them effective against fungal pathogens crops. For the above reasons, first part paper, structure selected analogs was considered, detailed spectroscopic analyses were conducted focusing on excited state intramolecular proton transfer (ESIPT) process taking place same. Measurements taken terms absorption spectroscopy electron fluorescence, synchronous spectra, fluorescence lifetimes, well calculations quantum efficiency solvents concentrations. In spectral observations, ESIPT manifested several very distinct dual fluorescence. Moreover, molecules, this phenomenon strongly related to molecular aggregation, which associated with not efficient but nonetheless visible AIE (Aggregation-Induced Emission) type. second preliminary study presented exploring microbiological properties imino-1,3,4-thiadiazole context potential applicability inhibitors affecting development growth some most important attacking cereal crops posing an increasing threat modern agriculture. Overall, research article provides detailed, experimental analysis imino-thiadiazoles points use novel solutions capable limiting cereals.

Language: Английский

Citations

0
Design, synthesis, and characterization of a novel pH-responsive azo dye incorporating a 1,3,4-thiadiazole ring for advanced textile applications DOI

Sanjay Belowar,

Md Rahamatolla,

Shahidul Islam

et al.

Dyes and Pigments, Journal Year: 2024, Volume and Issue: 231, P. 112410 - 112410

Published: Aug. 17, 2024

Language: Английский

Citations

3
A 1,3,4-thiadiazole based turn-on probe with large Stoke’s shift and ESIPT effect for fluorescent detection of H2S and its applications DOI
Yufeng Sun,

Guilin Wei,

Yongchen Wang

et al.

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 116032 - 116032

Published: Sept. 1, 2024

Language: Английский

Citations

2
Coordination-driven molecular switch on the base of an ESIPT-capable pyrimidine ligand: Synthesis, fine-tuning of emission by the halide anion and theoretical studies DOI
Nikita A. Shekhovtsov, Елена Б. Николаенкова,

S. N. Vorobyeva

et al.

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 116091 - 116091

Published: Oct. 1, 2024

Language: Английский

Citations

2
Dual-fluorescent starch biopolymer films containing 5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine powder as a functional nanofiller DOI Creative Commons
Anita Kwaśniewska,

Katarzyna Orzechowska,

Klaudia Rząd

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Dec. 28, 2024

Physical and photophysical properties of starch-based biopolymer films containing 5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine (NTA) powder as a nanofiller were examined using atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), stationary UV-Vis fluorescence well resonance light scattering (RLS) time-resolved measurements, where possible, analyzed with reference to pristine NTA solutions. AFM studies revealed that the addition into starch did not significantly affect surface roughness, all displaying similar Sq values ranging from 70.7 nm 79.7 nm. Similarly, Young's modulus measurements showed no significant changes after incorporating 1,3,4-thiadiazole. Adhesion water contact angle assessments demonstrated maintained high hydrophilicity (water wetting) across films. Color analysis corroborated anticipated trend, showing increasing additive content resulted in decreased lightness increased yellowness. Interestingly, however, while polar isopropanol solvent at low concentration, shows typical single-band emission, centered 410 slight enhancement band on long-wavelength side around 530 nm, its incorporation matrices results appearance dual signal maxima 430 Concentration-dependence emission experiments, demonstrating even increase amount solution, an additional, weak emerged within spectral range corresponding intensive film, along performed quantum-chemical studies, including both monomeric aggregated (dimer trimer) models, conclusively unveil observed starch/NTA is due molecular aggregation effects resulting aggregation-induced emission. This study underscores potential biobased polymer films, furnishing them new features without substantially altering their thus enabling extended applications.

Language: Английский

Citations

0