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schstone

新虫 (初入文坛)

[求助] 荧光方面的翻译英译汉

Discussion
A general trend which appears evident in the data is that radiative and radiationless rate constants increase as the polarity of the solvent increases. If the increasing radiationless process is intersystem crossing to the triplet then more phosphorescence is expected in polar solvents. On the other hand, if the increasing ratiationless process is internal conversion, Le., S1 -+ So, then more phosphorescence is expected in nonpolar solvents. The fact that the fluorescence
yield generally increases in more polar solvents is readily accounted for by the increasing value of k ~Fu. rt hermore, the observation that the phosphorescence of these molecules is present in polar solvents, but absent in nonpolar solvents such
as methylcyclohexane strongly suggests that the radiationless mode which exhibits enhancement in polar solvents is intersystem crossing. Thus the observation that $JF and $Jp increase with solvent polarity suggests that hi, (internal conversion)
becomes less important or alternatively that hi, is approximately constant at-4 X lo7 s-l, i.e., in cyclohexane h& ki, since intersystem crossing is unimportant.

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wmslele

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【答案】应助回帖

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sltmac: 金币+1 2012-05-13 18:44:19
schstone: 金币+5, 翻译EPI+1, 有帮助 2012-05-14 08:46:25
讨论
数据的一个明显趋势就是随着溶剂极性的增加辐射及非辐射速率常数增大。如果增加非辐射的过程,极性溶剂将发生三重态磷光跃迁。反之,增加辐射过程,非极性溶剂将发生S1-S0的跃迁。
我走的很慢,但是我从不倒退!
2楼2012-05-12 16:08:06
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schstone

新虫 (初入文坛)

引用回帖:
2楼: Originally posted by wmslele at 2012-05-12 16:08:06:
讨论
数据的一个明显趋势就是随着溶剂极性的增加辐射及非辐射速率常数增大。如果增加非辐射的过程,极性溶剂将发生三重态磷光跃迁。反之,增加辐射过程,非极性溶剂将发生S1-S0的跃迁。

非常感谢
3楼2012-05-13 15:12:56
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