作者：Lixi Zeng, Yujian He, Zhifeng Dai, Jian Wang, Caiqi Wang, and Yonggang Yang
关键字：supramolecular chirality , pseudoisocyanine , self-assembly - induced circular dichroism , α-amino acid
论文来源：期刊
具体来源：Science in China Series B: Chemistry
发表时间：2009年

Abstract       全文链接

Supramolecular chirality and molecular self-assembly are important and interesting phenomena in living and non-living systems. In this work, supramolecular chirality of achiral pseudoisocyanine (PIC) J-aggregates was successfully induced by D-, L-phenylalanine (Phe) and other amino acids in NaCl solution. The chiral J-aggregates showed a characteristic, induced circular dichroism (ICD) in the visible region of J-band chromophore which depends on the absolute configuration, concentration and side groups of α-amino acids, as well as temperature. The atomic force microscopy images indicated that the J-aggregates exist in large bundles of entangled nanofibers, and the observed ICD might result from the macroscopic helical arrangement of the assemblies