Rochford, Jonathan and Botchway, Stanley and McGarvey, John J. and Rooney, A. Denise and Pryce, Mary T. (2008) Photophysical and Electrochemical Properties of meso-Substituted Thien-2-yl Zn(II) Porphyrins. Journal of Physical Chemistry A, 112 (46). pp. 11611-11618. ISSN 1089-5639

Preview

Download (3MB) | Preview

Abstract

The influence of the thiophene ring on the ground and excited state properties of the porphyrin ring is investigated, when substituted at the meso-position. A series of mono-, di-, tri-, and tetra-meso-thien-2-yl porphyrins are studied and discussed with respect to the reference compounds zinc(II)-5,10,15,20-tetra(thien-2′-yl)porphyrin (1a) and zinc(II)-5,10,15,20-tetraphenylporphyrin (ZnTPP). The extended conjugated system zinc(II)-5-(5′-(5′′-ethynyl-2′′-thiophenecarboxaldehyde)thien-2′-yl)-10,15,20-triphenylporphyrin (4d) is also studied and shows enhanced charge transfer character due to the presence of the terminal aldehyde accepting group. A detailed analysis of ground and excited state UV−vis absorption, steady-state and time-resolved fluorescence, laser flash photolysis, and electrochemical data all point toward substantial electronic communication between the central Zn(II) porphyrin ring and the meso-thien-2-yl substituents, which is evident from excited state charge transfer character.

Item Type:	Article
Keywords:	Photophysical; Electrochemical Properties; meso-Substituted Thien-2-yl Zn(II) Porphyrins;
Academic Unit:	Faculty of Science and Engineering > Chemistry
Item ID:	7980
Identification Number:	https://doi.org/10.1021/jp805809p
Depositing User:	Dr. Denise Rooney
Date Deposited:	01 Mar 2017 16:05
Journal or Publication Title:	Journal of Physical Chemistry A
Publisher:	American Chemical Society
Refereed:	Yes
Funders:	Enterprise Ireland (EI)
URI:	http://pubs.acs.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

Repository Staff Only(login required)

Item control page

Downloads

Origin of downloads