Capturing intrinsic site-dependent spectral signatures and lifetimes of isolated OH oscillators in extended water networks
Capturing intrinsic site-dependent spectral signatures and lifetimes of isolated OH oscillators in extended water networks
复制标题
捕获扩展水网络中孤立 OH 振荡器的固有位置相关光谱特征和寿命
DOI:
10.1038/s41557-019-0376-9
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发表时间:
2020
期刊:
影响因子:
21.8
通讯作者:
Johnson, Mark A.
中科院分区:
文献类型:
--
作者:
Yang, Nan;Duong, Chinh H.;Kelleher, Patrick J.;Johnson, Mark A.
The extremely broad infrared spectrum of water in the OH stretching region is a manifestation of how profoundly a water molecule is distorted when embedded in its extended hydrogen-bonding network. Many effects contribute to this breadth in solution at room temperature, which raises the question as to what the spectrum of a single OH oscillator would be in the absence of thermal fluctuations and coupling to nearby OH groups. We report the intrinsic spectral responses of isolated OH oscillators embedded in two cold (~20 K), hydrogen-bonded water cages adopted by the Cs+·(HDO)(D2O)19and D3O+·(HDO)(D2O)19clusters. Most OH oscillators yield single, isolated features that occur with linewidths that increase approximately linearly with their redshifts. Oscillators near 3,400 cm−1, however, occur with a second feature, which indicates that OH stretch excitation of these molecules drives low-frequency, phonon-type motions of the cage. The excited state lifetimes inferred from the broadening are considered in the context of fluctuations in the local electric fields that are available even at low temperature.
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影响因子:
2.1
作者:
S. Xantheas
通讯作者:
S. Xantheas
影响因子:
18.3
作者:
Skinner, J. L.;Pieniazek, P. A.;Gruenbaum, S. M.
通讯作者:
Gruenbaum, S. M.
DOI:
10.1021/jp501240e
发表时间:
2014-05
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
S. T. van der Post;H. Bakker
通讯作者:
S. T. van der Post;H. Bakker
影响因子:
4.4
作者:
Lawrence, CP;Skinner, JL
通讯作者:
Skinner, JL
影响因子:
56.9
作者:
Nan Yang;Chinh H. Duong;P. Kelleher;A. McCoy;Mark A. Johnson
通讯作者:
Nan Yang;Chinh H. Duong;P. Kelleher;A. McCoy;Mark A. Johnson