Rational Design of a Solvatochromic Fluorescent Uracil Analogue with a Dual-Band Ratiometric Response Based on 3-Hydroxychromone
作者:Dmytro Dziuba、Iuliia A. Karpenko、Nicolas P. F. Barthes、Benoît Y. Michel、Andrey S. Klymchenko、Rachid Benhida、Alexander P. Demchenko、Yves Mély、Alain Burger
DOI:10.1002/chem.201303399
日期:2014.2.10
preservation but also the improvement of these properties. The absorption and fluorescence spectra are shifted to longer wavelengths together with an increase of brightness. Moreover, the two fluorescence bands are better resolved and provide ratiometric responses across a broader range of solvent polarities. To understand the photophysical properties of this new fluorophore, a series of model compounds were synthesized
迫切需要对本地环境具有强烈信息响应的荧光核苷类似物。在这项工作中,报道了由3-羟基色酮(3HCs)和尿嘧啶片段组成的新型溶剂变色比例荧光团的设计,合成和研究。3HC染料是一类多参数,对环境敏感的荧光团,由于其发射光谱中存在两个分辨良好的条带,因此可提供比例响应。合成的缀合物不仅显示了保存性,而且还显示了这些性质的改善。吸收光谱和荧光光谱随着亮度的增加而移至更长的波长。此外,两个荧光带可以更好地分辨,并在较宽的溶剂极性范围内提供比例响应。为了了解这种新型荧光团的光物理性质,合成了一系列模型化合物并进行了比较研究。获得的数据表明,该衍生物的尿嘧啶和3HC片段耦合到电子共轭体系中,该体系在激发时具有很强的电荷转移特性。发达的荧光团是核酸的前瞻性标记。