Multi-response gelation based on the molecular assembly of Sudan I dye derivatives for phase selective gelators and chemosensors

Ban-Peng Cao; Xue-Wen Shi; Haixin Ding; Ya-Min Wu; Kenta Matsumoto; Hiroaki Okamoto; Qiang Xiao

doi:10.1039/d2ra05545g

Multi-response gelation based on the molecular assembly of Sudan I dye derivatives for phase selective gelators and chemosensors

RSC Adv. 2022 Nov 23;12(52):33589-33597. doi: 10.1039/d2ra05545g. eCollection 2022 Nov 22.

Authors

Ban-Peng Cao¹, Xue-Wen Shi¹, Haixin Ding¹, Ya-Min Wu¹, Kenta Matsumoto², Hiroaki Okamoto², Qiang Xiao¹

Affiliations

¹ Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University Nanchang 330013 China xiaoqiang@tsinghua.org.cn.
² Graduate School of Sciences and Technology for Innovation, Yamaguchi University 2-16-1 Tokiwadai Ube 755-8611 Japan oka-moto@yamaguchi-u.ac.jp.

Abstract

Sudan I dye-based smart low molecular weight gelators with/without a perfluoroalkyl group have been successfully synthesized and characterized by rheological measurements, scanning electron microscopy (SEM), IR, and NMR spectroscopies. The gelation behaviors in response to temperature, pH changes, metal cations, and UV-vis light irradiation are investigated. Compounds 1 and 2 could selectively sense the Cu²⁺ cation in the presence of other metal cations. Moreover, compound 2 with a perfluoroalkyl group shows phase selective gelation ability. This work also provides a valuable reference for exploiting photosensitive materials as chemosensors.