A light responsive two-component supramolecular hydrogel: a sensitive platform for the fabrication of humidity sensors.

Samai, Suman; Sapsanis, Christos; Patil, Sachin P; Ezzeddine, Alaa; Moosa, Basem A; Omran, Hesham; Emwas, Abdul-Hamid; Salama, Khaled N et al. · Soft Matter · 2016

basic_science · Level V

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Abstract

The supramolecular assembly of anionic azobenzene dicarboxylate and cationic cetyltrimethylammonium bromide (CTAB) formed a stimuli responsive hydrogel with a critical gelation concentration (CGC) of 0.33 wt%. This self-sustainable two-component system was able to repair damage upon light irradiation. Moreover, it was successfully employed in the fabrication of highly sensitive humidity sensors for the first time.