Knoevenagel Condensation Reaction-Empowered Hydrogels with pH-Tunable Dynamic Properties DOI
Yan Yu, Xiaonong Zhang, Chunsheng Xiao

et al.

ACS Macro Letters, Journal Year: 2025, Volume and Issue: unknown, P. 773 - 780

Published: May 22, 2025

Dynamic hydrogels have found extensive applications in various biomedical fields owing to their remarkable dynamic properties, such as fast stress relaxation and self-healing capabilities. In this work, we report the development of a hydrogel empowered by reversible Knoevenagel condensation (KC) reaction featuring pH-tunable properties. By adjusting pH, exchange rates quantities C═C bonds formed via KC can be regulated through modulation association rate constant (k1), dissociation (k-1), equilibrium (Keq) reaction. Specifically, pH reduction decelerated both k1 k-1 while elevating Keq. As result, when decreased from 10 1, reaction-formed exhibited progressive increase time (τ1/2) 100 over 1,000 s, accompanied enhanced structural stability improved mechanical performance. This study provides new strategy design with tunable properties pH-responsive

Language: Английский

Ultra-fast cryogenic self-healing ionic hydrogel for flexible wearable bioelectronics DOI

Lianghao Jia,

Jinrui Jiang,

Aobo Ren

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153734 - 153734

Published: July 3, 2024

Language: Английский

Citations

24
Emerging Applications of Smart Hydrogel Nanocomposites in 3D Printing DOI
Mohammad Heidari, Farangis Shahi,

Hana Afshar

et al.

Polymers for Advanced Technologies, Journal Year: 2024, Volume and Issue: 35(12)

Published: Dec. 1, 2024

ABSTRACT This review provides a comprehensive overview of the emerging applications stimuli‐responsive hydrogels in 3D printing, emphasizing their transformative potential creating adaptive and multifunctional structures. Stimuli‐responsive hydrogels, including magneto‐, thermo‐, pH‐, moisture‐, solvent‐, photo‐responsive varieties, have gained significant attention due to ability undergo dynamic changes response specific environmental stimuli. The begins by exploring fundamental characteristics fabrication methods used additive manufacturing, highlighting exceptional adaptability programmability. It then delves into various across diverse fields, soft robotics, tissue engineering, drug delivery systems, wearable electronics, food technology, electromagnetic interference shielding, anti‐counterfeiting technologies. By integrating latest advancements printing techniques, this aims offer insights how are enabling development innovative, intelligent, environmentally responsive systems. future perspectives section discusses challenges opportunities for advancing use suggesting directions research that could push boundaries functional materials programmable

Language: Английский

Citations

5
Knoevenagel Condensation Reaction-Empowered Hydrogels with pH-Tunable Dynamic Properties DOI
Yan Yu, Xiaonong Zhang, Chunsheng Xiao

et al.

ACS Macro Letters, Journal Year: 2025, Volume and Issue: unknown, P. 773 - 780

Published: May 22, 2025

Dynamic hydrogels have found extensive applications in various biomedical fields owing to their remarkable dynamic properties, such as fast stress relaxation and self-healing capabilities. In this work, we report the development of a hydrogel empowered by reversible Knoevenagel condensation (KC) reaction featuring pH-tunable properties. By adjusting pH, exchange rates quantities C═C bonds formed via KC can be regulated through modulation association rate constant (k1), dissociation (k-1), equilibrium (Keq) reaction. Specifically, pH reduction decelerated both k1 k-1 while elevating Keq. As result, when decreased from 10 1, reaction-formed exhibited progressive increase time (τ1/2) 100 over 1,000 s, accompanied enhanced structural stability improved mechanical performance. This study provides new strategy design with tunable properties pH-responsive

Language: Английский

Citations

0