Fluorinated squaraine as near-IR label with improved properties for the labeling of oligonucleotides
摘要:
A new squaraine dye with fluorinated benzothiazole rings was synthesized. This new label possesses improved photophysical properties and chemical stability as compared to the corresponding non-fluorinated and the dicyanosquaraines. These squaraines were used for the labeling of a series of oligonucleotides with various sequences, lengths, and chemistries. The conjugates involving the fluorinated squaraine possess the best properties: emission wavelength >670 nm, high quantum yields (0.27-0.39). (C) 2009 Elsevier Ltd. All rights reserved.
Experimental and Computational Investigation of Unsymmetrical Cyanine Dyes: Understanding Torsionally Responsive Fluorogenic Dyes
作者:Gloria L. Silva、Volkan Ediz、David Yaron、Bruce A. Armitage
DOI:10.1021/ja070025z
日期:2007.5.1
restricted environments. Herein we describe a series of fluorinated analogues of the dye thiazole orange that exhibit improved fluorescence quantum yields and photostabilities. In addition, computational studies on these dyes revealed that twisting about the monomethine bridge beyond an interplanar angle of 60 degrees leads to a dark state that decaysnonradiatively to the ground state, accounting
The present invention is directed to a fluorescent dye comprising a benzothiazolium moiety and a pyrimidinium moiety connected by a mono-methine bridge, characterized in that (i) the 2-position of the pyrimidine carries a substituent which starts with a C-atom and (ii) the 5- and 6-positions of the pyrimidine ring are an integral part of a further aromatic ring structure.
Disclosed is a fluorescent dye comprising a benzothiazolium moiety and a pyrimidinium moiety connected by a mono-methine bridge, characterized in that (i) the 2-position of the pyrimidine carries a substituent which starts with a C-atom and (ii) the 5- and 6- positions of the pyrimidine ring are an integral part of a further aromatic ring structure as exemplified by the following:
Conflict of interest There are no conflicts to declare.
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[EN] CYANINE DYE AND PREPARATION METHOD THEREFOR AND USE THEREOF, SAMPLE ANALYSIS METHOD, AND ANALYZER<br/>[FR] COLORANT CYANINE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION, PROCÉDÉ D'ANALYSE D'ÉCHANTILLON ET ANALYSEUR<br/>[ZH] 花菁染料、其制备方法、用途、样本分析方法及分析仪