Dyes and Pigments p. 368 - 379 (2018)
Update date:2022-08-30
Topics:
Concei??o, Rafaela
Hungerford, Graham
Costa, Susana P.G.
Gon?alves, M. Sameiro T.
New ester cages bearing the coumarin (2H-benzopyran-2-one) skeleton with extended π-systems as phototriggers, for glycine and β-alanine, as models of carboxylic acid bifunctional molecules with biological relevance, were evaluated under photolysis conditions at 254, 300, 350 and 419 nm of irradiation in a RPR-100 photochemical reactor. The processes were followed by HPLC-UV detection and 1H NMR with collection of kinetic data. The results showed a correlation between the photolysis efficiency and the increasing extension of the conjugation for both glycine and β-alanine, showing that the 7-aminocoumarin afforded the best results at all wavelengths tested. From a study of the time-resolved fluorescence behaviour, these compounds were also found to exhibit more complex fluorescence decay kinetics. This was attributed to the presence of conjugated and non-conjugated coumarin species.
View MoreChongqing KonAo Health Co.,Ltd
Contact:13687578375
Address:wuhan hubei china
Contact:+31-24-3886056
Address:Binderskampweg 29 Unit 36
Contact:86-931-8272767
Address:Room 602, No.461, Nanchang Road, Chengguan District, Lanzhou City, China PRC
Zhenjiang Haitong Chemical Industry Co., Ltd.
Contact:+86 (511) 8448-0369
Address:Baoyan Town, Dantu District, Zhenjiang City, Jiangsu, China
Changsha Yonta Industry Co., Ltd.
Contact:+ 86-731-8535 2228
Address:Rm.1717, North Bldg., No.368, East 2nd Ring Road(2nd Section)
Doi:10.1021/ja00454a066
(1977)Doi:10.1039/jr9640002799
(1964)Doi:10.1016/j.chembiol.2018.02.010
(2018)Doi:10.1021/acs.joc.9b02300
(2019)Doi:10.3184/174751911X12964930076566
(2011)Doi:10.1007/BF00531511
(1993)