What question did this study set out to answer?

To synthesize novel pyrano[3,2-c]quinoline derivatives and evaluate their theoretical electronic structures, antioxidant capacity, and applications in forensic imaging and anticounterfeiting inks.

August 19, 2026Polycyclic aromatic compounds

Synthesis and DFT Study of New Pyrano3,2-cQuinoline Derivatives for Antioxidant, Forensic, and Security Ink Applications

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Authors

EBEbtehal E. Bahig RFR. Fouad MIMostafa M. Ismail

Discussion

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Overview

Experimental and computational study demonstrates tunable luminescent and antioxidant properties of novel pyrano[3,2-c]quinolines, highlighting forensic imaging and security ink utility.

Key Points

To synthesize novel pyrano[3,2-c]quinoline derivatives and evaluate their theoretical electronic structures, antioxidant capacity, and applications in forensic imaging and anticounterfeiting inks.
Synthesized pyrano[3,2-c]quinoline-2,5-dione derivatives via nucleophilic substitution and condensation reactions using 6-ethyl-4-chloropyrano[3,2-c]quinoline-3-carbaldehyde 2 with sulfur nucleophiles, primary amines, and active methylene compounds.
Performed DFT computations at the B3LYP/6–311++G(d,p) level to model geometrical structure, MEP, Fukui functions, FMO characteristics, and NMR properties.
Assessed antioxidant performance using the DPPH radical scavenging assay and characterized photoluminescent emission across varied substrates and ink preparations.
Compounds 4, 7, and 9 exhibited the highest DPPH radical scavenging activity among the series, though their scavenging potency was lower than that of ascorbic acid.
Compounds 5 (yellow–green) and 6 (gold–yellow) successfully resolved latent fingerprints with sharp ridge clarity across porous, nonporous, and multicolored substrates.
Luminescent ink formulations based on compounds 3 (green–yellow), 8 (blue), and 11 (violet) demonstrated stable, humidity-resistant emission suitable for secure data encoding.

Cite This Study

Bahig et al. (2026) studied this question.

synapsesocial.com/papers/6a8563eb03308d306e2d74e3 https://doi.org/10.1080/10406638.2026.2716118

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August 19, 2026Polycyclic aromatic compounds

Synthesis and DFT Study of New Pyrano3,2-cQuinoline Derivatives for Antioxidant, Forensic, and Security Ink Applications

View Full Paper

Ask AI

Bookmark

Authors

EBEbtehal E. Bahig RFR. Fouad MIMostafa M. Ismail

Discussion

Member takes

Overview

Experimental and computational study demonstrates tunable luminescent and antioxidant properties of novel pyrano[3,2-c]quinolines, highlighting forensic imaging and security ink utility.

Key Points

To synthesize novel pyrano[3,2-c]quinoline derivatives and evaluate their theoretical electronic structures, antioxidant capacity, and applications in forensic imaging and anticounterfeiting inks.
Synthesized pyrano[3,2-c]quinoline-2,5-dione derivatives via nucleophilic substitution and condensation reactions using 6-ethyl-4-chloropyrano[3,2-c]quinoline-3-carbaldehyde 2 with sulfur nucleophiles, primary amines, and active methylene compounds.
Performed DFT computations at the B3LYP/6–311++G(d,p) level to model geometrical structure, MEP, Fukui functions, FMO characteristics, and NMR properties.
Assessed antioxidant performance using the DPPH radical scavenging assay and characterized photoluminescent emission across varied substrates and ink preparations.
Compounds 4, 7, and 9 exhibited the highest DPPH radical scavenging activity among the series, though their scavenging potency was lower than that of ascorbic acid.
Compounds 5 (yellow–green) and 6 (gold–yellow) successfully resolved latent fingerprints with sharp ridge clarity across porous, nonporous, and multicolored substrates.
Luminescent ink formulations based on compounds 3 (green–yellow), 8 (blue), and 11 (violet) demonstrated stable, humidity-resistant emission suitable for secure data encoding.

Cite This Study

Bahig et al. (2026) studied this question.

synapsesocial.com/papers/6a8563eb03308d306e2d74e3 https://doi.org/10.1080/10406638.2026.2716118

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