CONTROL OF FLUORESCENCE ANISOTROPY BY LIGHT QUENCHING FLUORESCENCE
CONTROL OF FLUORESCENCE ANISOTROPY BY LIGHT QUENCHING FLUORESCENCE
批准号:
6282898
负责人:
IGNACY GRYCZYNSKI
金额:
$2.55万
依托单位国家:
美国
项目类别:
财政年份:
1998
资助国家:
美国
项目状态:
已结题
起止时间:
1998-04-01 至 1999-03-31
中文摘要
我们首次报道了荧光各向异性
在存在光猝灭的情况下可以增加。中的变化
各向异性取决于激发和偏振的相对极化
猝灭脉冲。我们还证明了角分布
过渡力矩在以下情况下失去z轴对称性
垂直光淬火。在这种情况下,有必要使用更多
各向异性的一般定义。稳态和时间分辨率
测量。特别是,具有低各向异性或零各向异性的系统可以
用这项技术进行研究。
英文摘要
We reported the first demonstration that fluorescence anisotropy
can be increased in the presence of light quenching. The changes in
anisotropy depends on the relative polarizations of the excitation and
quenching pulses. We also showed that the angular distribution of
transition moments loses the z-axis symmetry in the presence of
perpendicular light quenching. In this case is necessary to use more
general definition of anisotropy. Steady-state and time-resolve
measurements. In particular, systems with low or zero anisotropy can
be investigated with this technique.
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