Dozova, Nadia and Murray, Ciaran and McCaffrey, John G. and Shafizadeh, Niloufar and Crepin, Claudine (2008) Amplified emission of phthalocyanine isolated in cryogenic matrices. Physical Chemistry Chemical Physics, 10 (16). pp. 2167-2174. ISSN 1463-9076

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Abstract

Laser induced fluorescence spectroscopy of free-base (H(2)Pc) and zinc (ZnPc) phthalocyanines trapped in rare gas and nitrogen matrices reveals a quite unexpected phenomenon with a moderate increase in the laser intensity. In all matrices except Xe, a huge increase occurs in the intensity of an emission band near 755 nm when pumping the S(1) <-- S(0) transition. The band involves a vibrational mode of the ground state, located at 1550 and 1525 cm(-1) for H(2)Pc and ZnPc, respectively. Many of the characteristics of amplified emission (AE) are exhibited by this vibronic transition. Excitation scans recorded for the AE band yield greatly enhanced site selectivity compared to what is obtained in normal fluorescence excitation scans.

Item Type:	Article
Keywords:	Amplified emission; phthalocyanine; cryogenic matrices;
Academic Unit:	Faculty of Science and Engineering > Chemistry
Item ID:	7832
Identification Number:	https://doi.org/10.1039/B718418B
Depositing User:	Dr. John McCaffrey
Date Deposited:	01 Feb 2017 10:10
Journal or Publication Title:	Physical Chemistry Chemical Physics
Publisher:	Royal Society of Chemistry
Refereed:	Yes
URI:	http://pubs.rsc.org/
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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