Acridones and quinacridones: Novel fluorophores for fluorescence lifetime studies

被引:51
作者
Smith, JA [1 ]
West, RM [1 ]
Allen, M [1 ]
机构
[1] Amersham Plc, Amersham Biosci, Maynard Ctr, Forest Farm, Cardiff CF14 7YT, S Glam, Wales
关键词
fluorescence lifetime; spectroscopic characteristics; photostability; labelled biomolecules;
D O I
10.1023/B:JOFL.0000016287.56322.eb
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Two new families of fluorescent probe, acridones and quinacridones, whose fluorescence lifetime can be altered to produce a range of lifetimes from 3 ns to 25 ns are described. Both families of fluorophore have fluorescence lifetimes which are unaffected by pH in the range of 5 to 9 and show a marked resistance to photobleaching. The probes have been modified to allow them to be attached to biomolecules and the labelling of a neuropeptide (substance P) is described. The labelled peptides have the same fluorescence lifetime as the free fluorophore. Quinacridone, with an emission around 550 nm offers a long fluorescence lifetime, photostable alternative to fluorescein.
引用
收藏
页码:151 / 171
页数:21
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