Two-photon induced uncaging of a reactive intermediate. Multiphoton in situ detection of a potentially valuable label for biological applications.
Two-photon induced uncaging of a reactive intermediate. Multiphoton in situ detection of a potentially valuable label for biological applications.
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DOI：
10.1021/jo048053c
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发表时间：
2005-03
期刊：
影响因子：
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通讯作者：
Joanne Dyer;S. Jockusch;V. Balšánek;D. Sames;N. Turro
中科院分区：
文献类型：
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作者：
Joanne Dyer;S. Jockusch;V. Balšánek;D. Sames;N. Turro
利用调q Nd:YAG激光器的532 nm聚焦激光脉冲，实现了双光子诱导的terphenyl重氮酮1的Wolff重排。将非荧光terphenyl重氮酮1转化为荧光酯衍生物4，利用聚焦激光脉冲在532 nm处原位检测。激光功率依赖性研究表明，Wolff重排是由terphenyl diazo酮1的双光子吸收引起的，但表明酯衍生物4的激发涉及两个以上532 nm的光子（多光子过程）。
[reaction: see text] Two-photon induced Wolff rearrangement of a terphenyl diazoketone 1 was achieved by using focused laser pulses of 532 nm from a Q-switched Nd:YAG laser. The nonfluorescent terphenyl diazoketone 1 was transformed into a fluorescent ester derivative 4, which can be detected in situ using the focused laser pulses at 532 nm. Laser power dependence studies show that the Wolff rearrangement is induced by two-photon absorption of the terphenyl diazoketone 1, but suggests that more than two photons of 532 nm are involved (a multiphoton process) in excitation of the ester derivative 4.