Conformationally Locked Tolans, β-Sheet Structures, and Photophysical Properties
作者:Jung-Ho Hong、Ananta Kumar Atta、Kwang-Bok Jung、Seul-Bi Kim、Jungseok Heo、Dong-Gyu Cho
DOI:10.1021/acs.orglett.5b03205
日期:2015.12.18
Conformationally locked tetrasubstituted tolans were synthesized by introducing a tether on the tolan. To demonstrate the utilities of these motifs, a beta-hairpin structure (15) was synthesized, and its additional stabilizing effects were evaluated. Moreover, the photophysical properties of cyclic tolans and their beta-sheet structure were investigated. The fluorescence quantum yield of cyclic tolan 12 is >1000 times stronger than its congener 1 in CH3CN.