化学
紧身衣
量子产额
吡咯
产量(工程)
吡咯烷
冷凝
光化学
摩尔吸收率
硼
红外光谱学
光谱学
荧光
斯托克斯位移
有机化学
物理
冶金
材料科学
光学
热力学
量子力学
作者
М. С. Груздев,Chervonova Ulyana,Bumagina Natalia,Kolker Arkadiy
出处
期刊:Letters in Organic Chemistry
[Bentham Science]
日期:2017-01-03
卷期号:13 (10): 718-725
被引量:2
标识
DOI:10.2174/1570178614666161118155955
摘要
Background: In this work a few approaches for the synthesis of 4,4-difluoro-8-(4’- carboxyphenyl)-4-bora-3a,4a-diaza-s-indacene are considered. The process of obtaining this boron fluoride complex involves the following stages: introduction of the protective group (methoxy-, 1’- pyrrolidine-2,5-dion-, trichloroethoxy-) on the carboxy-group of 4-formylbenzoic acid, condensation with pyrrole, removal of protection, oxidation, and complexation proper. A method of direct condensation of pyrrole with the 4-formylbenzoic acid in the presence of a catalytic amount of 0.1 M HCl was proposed to achieve a high yield of the target product. All synthesized compounds were characterized by infrared spectroscopy, nuclear magnetic resonance spectroscopy, mass spectrometry and elemental analysis. Values of fluorescence quantum yield and Stokes shift were calculated for boron fluoride complexes of dipyrrolylmethenes. Keywords: BODIPY, fluorescence, quantum yield, Stokes shift, extinction coefficient.
科研通智能强力驱动
Strongly Powered by AbleSci AI