Lavender violet, blue and pink: A new type of benzo[ a ]phenoxazine-based dipolar, red-emitting dyes
作者:Mithun Santra、Yong Woong Jun、Ye Jin Reo、Sourav Sarkar、Kyo Han Ahn
DOI:10.1016/j.dyepig.2017.03.031
日期:2017.7
A new type of the red-emitting benzo[a]phenoxazine-based dyes, dipolar analogues of Meldola's Blue, are synthesized by condensation of p-nitrosoanilines or p-nitrosophenol with 7-(alkylamino)naphthalen-2-ol in good yields. Their photophysicalproperties are characterized by the donor substituents introduced, offering dyes of lavender violet, blue, and pink colors. These dyes exhibit high absorptivity
一种新型的发红光的苯并[ a ]吩恶嗪类染料,即Meldola's Blue的偶极类似物,是通过对亚硝基苯胺或对亚硝基苯酚与7-(烷基氨基)萘-2-醇的缩合反应合成的。它们的光物理特性以引入的供体取代基为特征,可提供紫色,蓝色和粉红色的薰衣草染料。这些染料显示出高吸收率,良好的光学亮度边缘,良好的光稳定性,并且在水溶液中显示出大的斯托克斯位移。共聚焦激光扫描显微镜(CLSM)观察到,其中一种染料在细胞内发出鲜红色的荧光。因此,新染料具有用于包括细胞成像在内的染色目的的潜力。
Synthesis of Near‐Infrared‐Emitting Benzorhodamines and Their Applications to Bioimaging and Photothermal Therapy
作者:Mingchong Dai、Hyori Lee、Yun Jae Yang、Mithun Santra、Chang Wook Song、Yong Woong Jun、Ye Jin Reo、Won Jong Kim、Kyo Han Ahn
DOI:10.1002/chem.202001163
日期:2020.9.4
fluorophores with large Stokes shifts are in great demand for long‐term bioimaging at deeper depths with minimal autofluorescence and self‐quenching. Herein, a new class of benzorhodamines and their analogues that are photostable and emit in the NIR region (up to 785 nm) with large Stokes shifts (>120 nm) is reported. The synthesis involves condensation of 7‐alkylamino‐2‐naphthols with 2‐[4‐(dimethyl
Phenacyl ester derivatives bearing heterocycles as models for photocleavable linkers: synthesis and photolysis studies
作者:Andrea S.C. Fonseca、M. Sameiro T. Gonçalves、Susana P.G. Costa
DOI:10.1016/j.tet.2012.06.100
日期:2012.9
The synthesis of several phenacyl ester derivatives linked to oxygen and nitrogen heterocycles, benzoquinolone and (benzo)coumarins, was carried out in an effort to obtain systems that could be applied as photocleavable (bi)functional linkers for solid phase peptide synthesis. The heterocycles were attached to a spacer, with different lengths, followed by coupling to 2-bromo-1-phenylpropan-1-one, acting