Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Energy dispersive XAFS: Characterization of electronically excited states of copper(I) complexes

Tromp, Moniek, Dent, Andrew J., Headspith, Jon, Easun, Timothy, Sun, Xue-Zhong, George, Michael W., Mathon, Olivier, Smolentsev, Grigory, Hamilton, Michelle L. and Evans, John 2013. Energy dispersive XAFS: Characterization of electronically excited states of copper(I) complexes. Journal of Physical Chemistry B 117 (24) , pp. 7381-7387. 10.1021/jp4020355

Full text not available from this repository.

Abstract

Energy dispersive X-ray absorption spectroscopy (ED-XAS), in which the whole XAS spectrum is acquired simultaneously, has been applied to reduce the real-time for acquisition of spectra of photoinduced excited states by using a germanium microstrip detector gated around one X-ray bunch of the ESRF (100 ps). Cu K-edge XAS was used to investigate the MLCT states of [Cu(dmp)2]+ (dmp =2,9-dimethyl-1,10-phenanthroline) and [Cu(dbtmp)2]+ (dbtmp =2,9-di-n-butyl-3,4,7,8-tetramethyl-1,10-phenanthroline) with the excited states created by excitation at 450 nm (10 Hz). The decay of the longer lived complex with bulky ligands, was monitored for up to 100 ns. DFT calculations of the longer lived MLCT excited state of [Cu(dbp)2]+ (dbp =2,9-di-n-butyl-1,10-phenanthroline) with the bulkier diimine ligands, indicated that the excited state behaves as a Jahn–Teller distorted Cu(II) site, with the interligand dihedral angle changing from 83 to 60° as the tetrahedral coordination geometry flattens and a reduction in the Cu–N distance of 0.03 Å.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: ASC Publications
ISSN: 1520-6106
Last Modified: 04 Jun 2017 07:58
URI: http://orca-mwe.cf.ac.uk/id/eprint/71017

Citation Data

Cited 14 times in Google Scholar. View in Google Scholar

Cited 28 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item