Cooperative elastic switching vs. laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse

被引：0
|
作者：
Bertoni, R. [1 ]
Lorenc, M. [1 ]
Graber, T. [2 ]
Henning, R. [2 ]
Moffat, K. [2 ]
Letard, J. -F. [3 ]
Collet, E. [1 ]
机构：
[1] Univ Rennes 1, Inst Phys Rennes, UMR 6251, CNRS, F-35042 Rennes, France
[2] Univ Chicago, Ctr Adv Radiat Sources, Chicago, IL 60637 USA
[3] Univ Bordeaux, CNRS, ICMCB, 87 Ave Dr A Schweitzer, F-33608 Pessac, France
来源：
CRYSTENGCOMM | 2016年 / 18卷 / 38期
基金：
美国国家卫生研究院;
关键词：
TRANSITION; DYNAMICS; DRIVEN; FE(PHEN)2(NCS)2; COMPLEX;
D O I：
10.1039/c6ce00659k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Spin-crossover crystals show multi-step responses to femtosecond light excitation. The local molecular photo-switching from low to high spin states occurs on the sub-picosecond timescale. It is followed by additional conversion due to elastic (ns) and thermal (mu s) effects. In [Fe(phen)(2)(NCS)(2)] crystals discussed herein, the thermal switching can be made unobtrusive for the investigation of cooperative elastic switching. We evidence a cooperative transformation induced by lattice expansion through elastic coupling between molecules in the crystal, where up to 3 molecules are transformed per photon.
引用
收藏
页码：7269 / 7275
页数：7
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