detection of G-quadruplex DNA structures is an important issue and attracts extensive interest. To this end, numerous small molecular fluorescent probes have been designed. Here, we present a series of N-alkylated styrylquinolinium dyes named Ls-1, Ls-2 and Ls-3 with varying side groups at the chain end. We found that these dyes exhibited different binding behaviors to DNAs, and Ls-2 with a sulfonato group
Stable near-infrared (nir) marker dyes based on benzopyrylium-polymethines
申请人:——
公开号:US20020115862A1
公开(公告)日:2002-08-22
The [invention] disclosure is directed to so-called laser-compatible NIR marker dyes based on polymethines for use in optical, in particular, fluorescence optical determination and detection methods, for example, in the fields of medicine, pharmaceutics and in the areas of life science, materials science and environmental science. The disclosure further discusses the aim of the invention which was to create NIR marker dyes based on polymethine which have a high degree of photostability and stability in storage as well as a high fluorescent yield and which can be excited to fluorescence in the easiest possible manner by means of laser radiation in the visible or NIR spectral range, particularly with light of an argon, helium/neon, or diode laser. [According to the invention, dyes] Dyes based on polymethine of general formula (I) are used.
Synthesis of Coumarin/Phenanthridine-Fused Heterocycles and Their Photochemical and Thermochromic Properties
作者:Jiun-Jia Chen、Kuan-Ting Li、Ding-Yah Yang
DOI:10.1021/ol200117b
日期:2011.4.1
Four coumarin and phenanthridine-fused heterocycles were efficiently synthesized using base-mediated annulation of N-alkylquinolinium iodide and coumarin as a key step. One compound is found to be sensitive to light and changes color upon UV irradiation; the others are sensitive to heat and possess negative thermochromic properties. A novel light- and heat-sensitive molecular skeleton is introduced.
STABILE NIR-MARKER-FARBSTOFFE AUF DER BASIS VON BENZOPYRYLIUM-POLYMETHINEN