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

页码：7269 / 7275

页数：7

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