195253-49-7Relevant articles and documents
Novel triphenylamine-connected indolinium fluorescence sensor for detection of the cyanide anion and DFT calculations
Dalkilic, Oguzhan,Lafzi, Ferruh,Kilic, Haydar,Saracoglu, Nurullah
, (2020)
A new triphenylamine based probe (TPA) for detection of the cyanide anion (CN?) was designed and synthesized. In aqueous solution, TPA showed rapid fluorescence response and excellent selectivity for CN? ions, and other anions did not affect the detection process. The probe displays a detection limit of 1.17 μM which is lower than the threshold (1.9 μM) regulated by the World Health Organization (WHO) for CN? ions in aqueous solution. The sensitivity and photophysical properties of TPA were investigated using UV–Vis spectrophotometry, fluorescence spectrofluorometry, and 1H NMR titration techniques. Density functional theory (DFT) calculations were carried out to better understand the relationship between the photophysical properties and the electronic structures of TPA and TPA-CN.
Microwave-assisted synthesis method for ethylation reaction
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Paragraph 0012, (2019/10/05)
The invention relates to a microwave-assisted synthesis method for an ethylation reaction. The method is characterized in that a reaction substrate is in an organic solvent, trifluoroacetic acid ethyl ester is taken as an ethylation reagent, in the presence of an alkali, microwave-assisted heating is carried out for 2 minutes, and a corresponding ethylation product can be obtained. The invention provides a new method for the ethylation reaction. The reaction rate of the method is several times higher than that of a traditional method, the operation is simple and convenient, the cost is low, the reaction time is short, the application range of the substrate is wide, the use of the expensive or hypertoxic ethylation reagent can also be avoided, and the method has higher application value.
Conjugated oligomers with thiophene and indole moieties: Synthesis, photoluminescence and electrochromic performances
Dong, Ben,Li, Baoyan,Cao, Yi,Meng, Xinlei,Yan, Han,Ge, Shusheng,Lu, Yun
supporting information, p. 35 - 42 (2016/12/23)
Two series of thiophene oligomers and terthiophene oligomers consisting of both thiophene and indole moieties have been synthesized. They have same excitation-dependent photoluminescence characteristics, but different bandgaps and absorption behaviors, which relates to the number and denseness of indoles in the conjugated oligomers and the length of alkyl chains on indole moiety due to varied the π-π stacking interaction of conjugated structures in the as-prepared oligomers. A simple electrochromic device based on such a conjugated oligomer displays a novel four-color electrochromism from red to yellow, green and puce with the increased potential and possesses good environmental and redox stability. Such conjugated oligomer also exhibits high sensitivity and selectivity for Zn2+detection.
