Molecular structural requirements, dye specificity, and application of anionic peptide amphiphiles that induce intense fluorescence in cationic dyes
作者:Hiroshi Hachisako、Naoya Ryu、Ryoichi Murakami
DOI:10.1039/b818206j
日期:——
acid with relatively shorter side-chain methylenes. The dye specificity in terms of induction of the intense fluorescence was also investigated using hemicyanines (stilbazoliumetc.), cyanine, carbocyanine, thiacarbocyanines, and azo dye. The amphiphile with the shortest octanoyl-β-alanyl double-chain alkyl groups, longer side-chain, and shorter spacer was found to show increased sensitivity to alkali
我们以前曾报道过,能够在分子间形成三氢键的双链阴离子两亲物可能在水中形成极疏水的位点。 水特别是掺入了基于噻唑鎓的紧凑型半花青染料作为单体物质,从而导致染料中强烈的荧光发射。本文研究了强荧光诱导两亲物的结构要求。注意到将β-Ala残基引入两个长链烷基基团对于衍生自的两亲物最有效L-谷氨酸具有相对较短的侧链亚甲基。还使用半花菁(stilbazolium等),花菁,碳花菁,硫代碳菁和偶氮染料研究了染料在诱导强荧光方面的特异性。发现具有最短的辛酰基-β-丙氨酰基双链烷基,侧链较长和间隔基较短的两亲物显示出对碱金属离子,特别是Li +的敏感性增加。这可能是Li +的潜在OFF-ON型荧光传感器。