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Triplet states in a series of Pt-containing ethynylenes

Title data

Wilson, Joanne S. ; Köhler, Anna ; Friend, Richard H. ; Al-Suti, Mohammed K. ; Al-Mandhary, Muna R. A. ; Khan, Muhammad S. ; Raithby, Paul R.:
Triplet states in a series of Pt-containing ethynylenes.
In: The Journal of Chemical Physics. Vol. 113 (2000) Issue 17 . - p. 7627.
ISSN 0021-9606
DOI: https://doi.org/10.1063/1.1313527

Abstract in another language

By use of optical steady state and time resolved spectroscopy, we studied the evolution of the triplet excited state in a series of six ethynylenic polymers of the structure[-Pt(PBun3)2-C≡C-R-C≡C-]n where the spacer unit R is systematically varied to give optical gaps from 1.7–3.0 eV. The inclusion of platinum in the polymer backbone induces a strong spin-orbit coupling such that triplet state emission (phosphorescence) associated with the conjugated system can be detected. Throughout the series we find the S1-T1 (singlet-triplet) energy splitting to be independent of the spacer R, such that the T1 state is always 0.7±0.1 eV below the S1 state. With decreasing optical gap, the intensity and lifetime of the triplet state emission were seen to reduce in accordance with the energy gap law.

Further data

Item Type: Article in a journal
Refereed: No
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie - Univ.-Prof. Dr. Anna Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 18 Mar 2015 10:03
Last Modified: 18 Mar 2015 10:03
URI: https://eref.uni-bayreuth.de/id/eprint/8478