MURAL - Maynooth University Research Archive Library



    Photophysical and Electrochemical Properties of meso-Substituted Thien-2-yl Zn(II) Porphyrins


    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

    [img]
    Preview
    Download (3MB) | Preview


    Share your research

    Twitter Facebook LinkedIn GooglePlus Email more...



    Add this article to your Mendeley library


    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:

    Repository Staff Only(login required)

    View Item Item control page

    Downloads

    Downloads per month over past year