1692-25-7Relevant articles and documents
A polyfluorene based zwitterionic fluorescent probe for response towards biological species in aqueous media
Chakraborty, Chanchal,Bera, Manas Kumar,Malik, Sudip
, p. 3522 - 3528 (2014)
Water soluble zwitterionic fluorescent conjugated boronic acid-bearing polyfluorene (PFBA) has been prepared from poly(9,9′-(6″-bromohexyl) fluorene-co-alt-1,4-phenylene) (polymer 3) through a post-polymerized quaternization with 3-pyridineboronic acid. Titration of diol containing monosaccharides (d-glucose and d-fructose), l-ascorbic acid and l-DOPA with PFBA polymer in 0.1 M phosphate buffer (pH 7.4) solution results in significant concentration dependent quenching of the blue fluorescence of the polymer due to static quenching as the bio-analytes form a ground state boronate ester complex with PFBA. Upon addition of d-glucose, the emission colour of PFBA changes to greenish-yellow owing to the effective induced aggregated polymer structure. PFBA also exhibits maximum response to the biological analytes at pH 7.4 which provides a scope for PFBA to be used in biological systems.
SYNTHESIS OF 5-(3-PYRIDYL)-2,2'-BITHIOPHENE(SENSITIZER)
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Page/Page column 10-11, (2021/02/05)
Disclosed herein is a novel simple, short process for synthesis of the photosensitizer, 5-(3-pyridyl)-2,2'-bithiophene.
New compounds and organic light-emitting diode including the same
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Paragraph 0200-0206; 0252; 0255-0258, (2019/08/30)
PURPOSE: A compound is provided to improve luminous efficiency and to make low voltage operation possible when applied to an organic electroluminescence device by having low driving voltage and excellent luminous efficiency. CONSTITUTION: A compound is represented by chemical formula 1. In chemical formula 1, each R is selected from hydrogen, deuterium, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C7-30 alkyl, substituted or unsubstituted C3-30 cycloalkyl, substituted or unsubstituted C5-30 cycloalkenyl, substituted or unsubstituted C1-30 alkoxy, substituted or unsubstituted C6-30 aryloxy, substituted or unsubstituted C1-30 alkylthioxy, substituted or unsubstituted C5-30 arylthioxy, substituted or unsubstituted C1-30 alkylamine, substituted or unsubstituted C5-30 arylamine, substituted or unsubstituted C5-50 aryl, substituted or unsubstituted C3-50 heteroaryl, substituted or unsubstituted silicon, substituted or unsubstituted boron, substituted or unsubstituted silane, carbonyl, phosphoryl, amino, nitrile, hydroxy, nitro, halogen, amide, and ester.
Iridium metal organic complex and organic light-emitting device thereof
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Paragraph 0065; 0066; 0067; 0068; 0069, (2018/12/14)
The invention provides an iridium metal organic complex and an organic light-emitting device thereof and relates to the technical field of organic optoelectronic materials. An electron-rich double-nitrogen coordination structure in a complex structure is good for stabilizing trivalent iridium ions at the center; a four-membered ring composed of a ligand of the double-nitrogen coordination structure and metal has stronger rigidity, so that higher chemical stability and thermal stability are obtained and the light-emitting efficiency of the complex is improved. The synthesis is simple and easy to operate, and the iridium metal organic complex can be applied to the organic light-emitting device and is used as a light-emitting layer doping material; the problems of the organic light-emitting device that the light-emitting efficiency is low and the driving voltage is high can be effectively solved. The iridium complex is prepared into the device and is especially used as the doping material; the device has the advantages of low driving voltage and high light-emitting efficiency, and is better than a existing common OLED (Organic Light Emitting Diode).