Multi‐Stimuli Response of Advanced Functional Spiropyran‐Based Smart Chromic Material: Acid Vapors Sensing Applications DOI
Deepika Sharma,

Sachin Goyal,

Kamlesh Kumar

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Abstract Advanced functional molecules with multi‐stimuli responsiveness are crucial for multifunctional applications. One unique feature of such smart materials is their chromogenic properties, which provide real‐time indications absorption changes. Herein, the general strategy developing spiropyran (SP) based responsive material, responds to solvent polarity, light, and acids, presented. The advanced OH‐substituted SP (SP‐OH) synthesized via a simple acid‐catalyzed ether hydrolysis reaction confirmed using spectroscopic techniques. Furthermore, its solvato‐, photo‐ acido‐chromic studies investigated. solvatochromism examined in various organic solvents (TCM, DCM, DMF, DMSO, MeOH). photochromism studied under 365, 405, 530 nm light sources dark conditions. Under 365 405 sources, ring‐opening induced, however, ring‐closing induced nm, darkness. optimized time complete found be 1 5 min respectively. For ring‐closing, it at 20 min, corresponding darkness, Additionally, free‐standing SP‐OH/PVA composite film tested acidochromism acid vapors (HCl, H 2 SO 4 , HNO 3 HCOOH, CH COOH). Smart SP‐based material stimuli suggests suitability multiple stimuli‐induced chromic sensing

Language: Английский

Aromatic Pendant Containing Conjugated Polydiacetylene Based Low‐Temperature Irreversible Thermochromic Indicator: Smart Monitoring of Milk Storage DOI

Sachin Goyal,

Deepika Sharma, Kamlesh Kumar

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract The remarkable adaptability of chromogenic phases found in polymers like conjugated polydiacetylene (PDA) is especially noteworthy due to their vital role durable sensing applications. This study presents the synthesis and utilization PDA‐based functionalized dyes as a visual color indicator. These are developed by modifying head groups 10,12‐tricosadiynoic acid (TC) with aromatic alcohols, employing Steglich esterification. Confirmation dye derivative achieved using various analytical techniques. In addition, composite film fabricated mixing modified monomer polymer polyvinyl alcohol (PVA). exposed UV radiation for topochemical polymerization order form PDA. Moreover, demonstrate an irreversible transition (above 10 °C) thermochromic investigations. present revealed that these films showcased at low temperatures, which can serve warning indicators low‐temperature sensitive milk packets. Any change indicator's means storage conditions may help retailers end‐users accept packet further.

Language: Английский

Citations

0
Multi‐Stimuli Response of Advanced Functional Spiropyran‐Based Smart Chromic Material: Acid Vapors Sensing Applications DOI
Deepika Sharma,

Sachin Goyal,

Kamlesh Kumar

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Abstract Advanced functional molecules with multi‐stimuli responsiveness are crucial for multifunctional applications. One unique feature of such smart materials is their chromogenic properties, which provide real‐time indications absorption changes. Herein, the general strategy developing spiropyran (SP) based responsive material, responds to solvent polarity, light, and acids, presented. The advanced OH‐substituted SP (SP‐OH) synthesized via a simple acid‐catalyzed ether hydrolysis reaction confirmed using spectroscopic techniques. Furthermore, its solvato‐, photo‐ acido‐chromic studies investigated. solvatochromism examined in various organic solvents (TCM, DCM, DMF, DMSO, MeOH). photochromism studied under 365, 405, 530 nm light sources dark conditions. Under 365 405 sources, ring‐opening induced, however, ring‐closing induced nm, darkness. optimized time complete found be 1 5 min respectively. For ring‐closing, it at 20 min, corresponding darkness, Additionally, free‐standing SP‐OH/PVA composite film tested acidochromism acid vapors (HCl, H 2 SO 4 , HNO 3 HCOOH, CH COOH). Smart SP‐based material stimuli suggests suitability multiple stimuli‐induced chromic sensing

Language: Английский

Citations

0