Synthesis and properties of L(AS)3-type low-molecular-mass organic gelators based on citryl aromatic amino acid cholesteryl ester

Li, Huo; Zhang, Haixia; Wang, Ying; Wang, Yaxiong; Deng, Bo; Jin, Lisheng

doi:10.1016/j.colsurfa.2022.129197

Cited by 3 publications

(1 citation statement)

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“…The T d and T m values of the hydrogel samples first increased and then decreased with increasing Z-Gln-Gly ratio, and Gel-TG-ZQG (0.25) had the highest T d (189.66 • C) and T m (323.65 • C) values among the samples. The reason for this phenomenon was that the π-π stacking provided by the carbobenzoxy group in Z-Gln-Gly and the covalent crosslinking between the gelatin chains improved the thermal stability [34]. Conversely, excessive amounts of Z-Gln-Gly led to the formation of few covalent bonds, affecting the thermal stability of the hydrogel.…”

Section: Characterization Of Gel-tg-zqgmentioning

confidence: 99%

Mechanically Tough and Conductive Hydrogels Based on Gelatin and Z–Gln–Gly Generated by Microbial Transglutaminase

Chen,

Zhang,

Zhao

et al. 2024

Polymers

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Gelatin-based hydrogels with excellent mechanical properties and conductivities are desirable, but their fabrication is challenging. In this work, an innovative approach for the preparation of gelatin-based conductive hydrogels is presented that improves the mechanical and conductive properties of hydrogels by integrating Z–Gln–Gly into gelatin polymers via enzymatic crosslinking. In these hydrogels (Gel–TG–ZQG), dynamic π–π stacking interactions are created by the introduction of carbobenzoxy groups, which can increase the elasticity and toughness of the hydrogel and improve the conductivity sensitivity by forming effective electronic pathways. Moreover, the mechanical properties and conductivity of the obtained hydrogel can be controlled by tuning the molar ratio of Z–Gln–Gly to the primary amino groups in gelatin. The hydrogel with the optimal mechanical properties (Gel–TG–ZQG (0.25)) exhibits a high storage modulus, compressive strength, tensile strength, and elongation at break of 7.8 MPa at 10 °C, 0.15 MPa at 80% strain, 0.343 MPa, and 218.30%, respectively. The obtained Gel–TG–ZQG (0.25) strain sensor exhibits a short response/recovery time (260.37 ms/130.02 ms) and high sensitivity (0.138 kPa−1) in small pressure ranges (0–2.3 kPa). The Gel–TG–ZQG (0.25) hydrogel-based sensors can detect full-range human activities, such as swallowing, fist clenching, knee bending and finger pressing, with high sensitivity and stability, yielding highly reproducible and repeatable sensor responses. Additionally, the Gel–TG–ZQG hydrogels are noncytotoxic. All the results demonstrate that the Gel–TG–ZQG hydrogel has potential as a biosensor for wearable devices and health-monitoring systems.

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Section: Characterization Of Gel-tg-zqgmentioning

confidence: 99%