Photon echo peak shift experiments in the UV:: p-terphenyl in different solvents
Photon echo peak shift experiments in the UV:: p-terphenyl in different solvents
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DOI：
10.1016/j.molliq.2008.01.015
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发表时间：
2008-06-30
影响因子：
6
通讯作者：
Chergui, M.
中科院分区：
文献类型：
--
作者：
Ajdarzadeh Oskouei, A.;Braem, O.;Chergui, M.
本文介绍了一种新的工作在紫外光范围内的光子回波峰尖，并首次对非极性染料小分子对-三联苯(PTP)在乙醇、甲醇和异丙醇三种不同溶剂中的光子回波峰移(PEPS)实验进行了研究。实验证明了紫外光瞬变光栅法和光子回波法测量非极性溶剂化动力学的可行性，并突出了该技术在非极性溶剂化动力学研究中的敏感性。瞬变光栅实验表明，基态空穴的驰豫约为6ps。光子回波实验表明，当电子退相发生在小于100fs的时间尺度上时，溶剂化动力学时间尺度在皮秒范围内，这与文献中的结果一致。(C)2008爱思唯尔B.V.保留所有权利。
In this article we present a new photon echo set-tip operating in the UV range and our first results of photon echo peak shift (PEPS) experiments of a small non-polar dye molecule, p-terphenyl (pTP), in three different solvents: ethanol, methanol and 2-propanol. The experiments show the feasibility of UV transient grating and photon echo measurements and highlight the sensitivity of this technique for the Study of non-polar solvation dynamics. The transient grating experiments indicate a relaxation of the ground state hole of about 6 ps. The photon echo experiments show that while electronic dephasing occurs on timescales shorter than 100 fs, solvation dynamics timescales are in the picosecond regime, in agreement with the literature. (c) 2008 Elsevier B.V. All rights reserved.