21337-25-7Relevant academic research and scientific papers
Application of spectroscopic and theoretical methods in the studies of photoisomerization and photophysical properties of the push-pull styryl-benzimidazole dyes
J?drzejewska,Os?mia?owski,Zales?ny
, p. 117 - 128 (2016)
The synthesis and spectroscopic properties of a series of substituted 1,3-dimethyl-2-aminostyrylbenzimidazolium iodides are described and discussed. The products were identified by NMR, IR and UV-Vis spectroscopy and elemental analysis. Their electronic absorption and fluorescence band positions are affected by the character of the substituent and by the solvent polarity. The fluorescence decay of the dyes shows two lifetimes interpreted in terms of emission from two forms of the dye in the excited state. Moreover, the photochemical trans → cis isomerization is reported for these compounds. It occurs from the first excited singlet state of the trans isomer to the cis isomer following a trans-S0 → S1 excitation. The electron-donating character of the substituent in a styrene moiety is one of the crucial factors influencing the photoisomerization process. The structure of the cis isomer was established by 1H and 15N NMR. Experimental studies are supported by the results of quantum chemical calculations.
A small-molecule with a large two-photon absorption cross-section serves as a membrane-permeable ribonucleic acid (RNA) probe for live cell imaging
Feng, Ruiqing,Li, Longlong,Li, Bing,Li, Jinhui,Peng, Dan,Yu, Yitao,Mu, Qiuhong,Zhao, Ning,Yu, Xiaoqiang,Wang, Zhenhua
, p. 14325 - 14331 (2018/08/28)
We have synthesized a two-photon organic small-molecule probe (DMI), which has a considerable two-photon absorption cross section (δ) value and selectively stained endogenous RNA in the nucleolus and the cytoplasm of living cells with outstanding membrane
Two-photon fluorescence probe for RNA imaging and application thereof in living cells
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Paragraph 0028; 0029; 0030, (2017/08/28)
The invention relates to a two-photon fluorescence probe for RNA imaging and an application thereof in living cells. A structural general formula of the probe is shown as (I), wherein R is hydrogen, alkyl group, hydroxyalkyl or ether group, and X is bromi
Studies of 2-azaazulenium derivatives - 3: The nature of electron transitions and spectral properties of styryl dyes containing terminal groups of different types
Bricks, Julia L.,Stanova, Alona V.,Ryabitsky, Aleksey B.,Yashchuk, Valeriy M.,Kachkovsky, Aleksey D.
, p. 215 - 226 (2013/02/23)
This paper presents the results of a quantum-chemical study of the molecular geometry and electron structure as well as spectral measurements of absorption and 13C NMR spectra of dimethylaminostyryls, methoxystyryls, and methylstyryls bearing 2
