title: Enantioselective gel collapsing: a new means of visual chiral sensing.
abstract: An optically active BINOL-terpyridine based Cu(II) complex (R)-2 was prepared. Sonication of (R)-2 in CHCl(3) led to the formation of a stable gel. The interaction of this gel with chiral amino alcohols was studied. It was found that (S)-phenylglycinol (0.10 equiv) could break the gel network of (R)-2 (3.75% w/v, g/mL) in CHCl(3) to cause gel collapsing but (R)-phenylglycinol (0.10 equiv) could not. Similar enantioselective gel collapsing was also observed with (R)- and (S)-1-amino-2-propanol. This study demonstrates that chiral molecular gels are potentially useful for visual chiral discrimination. Complex (R)-2 in solution also exhibited significant enantioselective fluorescent enhancement in the presence of a variety of amino alcohols.
authors.affiliation: Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China 610064.
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.forename: Zeng
authors.initials: Z
authors.lastname: Huang
authors.forename: Shan-Yong
authors.initials: SY
authors.lastname: Chen
authors.forename: Kun
authors.initials: K
authors.lastname: Li
authors.forename: Xiao-Qi
authors.initials: XQ
authors.lastname: Yu
authors.forename: Lin
authors.initials: L
authors.lastname: Pu