Physical Chemistry Department, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India.
J Chem Phys. 2011 Aug 21;135(7):074507. doi: 10.1063/1.3624945.
Ultrafast fluorescence resonance energy transfer (FRET) in a catanionic [sodium dodecyl sulfate (SDS)-dodecyltrimethyl ammonium bromide (DTAB)] vesicle is studied by femtosecond up-conversion. The vesicles (diameter ∼400 nm for SDS-rich and ∼250 nm for DTAB-rich vesicles) are much larger than the SDS and DTAB micelles (diameter ∼4 nm). In both micelle and vesicles, FRET occurs in multiple time scales and the time scales of FRET correspond to a donor-acceptor distance varying between 12 and 36 Å.
超快速荧光共振能量转移（FRET）在双阳离子[十二烷基硫酸钠（SDS）-十二烷基三甲基溴化铵（DTAB）]囊泡中通过飞秒上转换进行研究。囊泡（SDS 丰富的囊泡直径约为 400nm，DTAB 丰富的囊泡直径约为 250nm）比 SDS 和 DTAB 胶束（直径约 4nm）大得多。在胶束和囊泡中，FRET 发生在多个时间尺度上，FRET 的时间尺度对应于供体-受体距离在 12 到 36Å 之间变化。
