pH-Sensitive exciton chirality chromophore. Solvatochromic effects on circular dichroism spectra
作者:Stefan E. Boiadjiev、David A. Lightner
DOI:10.1016/0957-4166(96)00372-2
日期:1996.10
Diesters (1 and 3) of (1S,2S) and (1R,2R)-cyolohexanediol and diamides (2 and 4) of(1S,2S) and (1R,2R)-diaminocyclohexane with p-hydroxycinnamic acid exhibit intense bisignate circular dichroism spectra in CH3OH: 1 Delta epsilon+55 (323 nm), -34 (287 nm); 2 Delta epsilon+75 (318 nm), -55 (281 nm) and in (CH3)(2)SO: 1 Delta epsilon+53 (328 nm), -33 (292 nm); 2 Delta epsilon+65 (319 nm), -50 (280 nm). Added NaOH causes a bathochromic shift of similar to 50 nm in CH3OH and similar to 80-90 nm in (CH3)(2)SO. Copyright (C) 1996 Elsevier Science Ltd