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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Proof of Chirality of J-Aggregates Spontaneously and Enantioselectively Generated from Achiral Dyes
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Proof of Chirality of J-Aggregates Spontaneously and Enantioselectively Generated from Achiral Dyes

机译：从手性染料自发和对映选择性产生J-聚集体的手性证明

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摘要

The recently published claim~(1.2) that the achiral 5,5',6,6'-tetrachlorobenzimidacarbocyanine chromophore spontaneously and enantioselectively generates chiral J-aggregates when it is substituted in the 1,1'-position with n-alkyl groups longer than hexyl and in the 3,3'-position with #omega#-acido-ethyl or #omega#-acido-n-propyl groups has been proved by empedding the J-aggregates of such a dye (1a) in a polymeric PVA film and measuring the CD signal at defined observation angles.Dye 1b,which is assumed to give achiral J-aggregates,has been investigated for comparison as well.Possible contibutions of linear dichroism and birefringence of ordered molecules to the measured CD signal have been excluded by careful checks using both a plain PVA film and a film containing monomers of a dye (2) of known chirality.
机译：最近公布的权利要求（1.2），当非手性5,5'，6,6'-四氯苯并咪唑基花青生色团在1,1'-位被长于n-烷基的取代基时，会自发和对映选择性地生成手性J-聚集体。已通过在聚合的PVA膜中掺入此类染料（1a）的J聚集体证明了己基和在具有＃omega＃-酸基-乙基或＃omega＃-酸基-正丙基的3,3'-位还研究了假定为产生非手性J聚集体的染料1b，以进行比较。使用普通的PVA薄膜和包含已知手性的染料（2）的薄膜进行仔细检查。

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