On what time scale does solvent relaxation in phospholipid bilayers happen?

被引：97

作者：

Sykora, J

Kapusta, P

Fidler, V

Hof, M

机构：

[1] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CR-18223 Prague 8, Czech Republic

[2] Ctr Complex Mol Syst & Biomol, CR-18223 Prague 8, Czech Republic

[3] Czech Tech Univ, Dept Phys Elect, Prague 18000 8, Czech Republic

来源：

LANGMUIR | 2002年 / 18卷 / 03期

关键词：

D O I：

10.1021/la011337x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Time-resolved emission spectra of seven fluorescent probes in egg-phosphatidylcholine bilayers have been investigated. About 90% of the solvent relaxation monitored by the headgroup labels Prodan, Laurdan, and Patman and by the backbone label 2-AS can be captured with an instrument providing subnanosecond time resolution. In comparison to 2-AS, the transient red-shift of 9-AS is characterized by a larger contribution of a picosecond process and by slower nanosecond dynamics, The major contribution to solvent relaxation probed by C(17)DiFU and Dauda is faster than the ultimate time resolution of the experiment; those chromophores appear to be located within the external interface of the bilayer.

引用

页码：571 / 574

页数：4

共 18 条

[1]

[Anonymous], [No title captured]

[2] Groups with polar characteristics can locate at both shallow and deep locations in membranes: The behavior of dansyl and related probes [J].