title: A novel strategy for the design of smart supramolecular gels: controlling stimuli-response properties through competitive coordination of two different metal ions.
abstract: By rationally introducing Ca(2+) and Fe(3+) into a supramolecular gel, a bimetal-gel CaFeG was prepared. CaFeG could reversibly "turn-on" its fluorescence upon sensing H2PO4(-) with specific selectivity under gel-gel states through the competitive coordination of Ca(2+) and Fe(3+) with gelators and H2PO4(-). Thus, CaFeG could act as a H2PO4(-) test kit and could be utilised in rewritable security display materials.
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China. linqi2004@126.com weitaibao@126.com.
authors: Qi
authors: Q
authors: Lin
authors: Bin
authors: B
authors: Sun
authors: Qing-Ping
authors: QP
authors: Yang
authors: Yong-Peng
authors: YP
authors: Fu
authors: Xin
authors: X
authors: Zhu
authors: You-Ming
authors: YM
authors: Zhang
authors: Tai-Bao
authors: TB
authors: Wei