Peer-Reviewed Journal Details
Mandatory Fields
Rochford, J;Botchway, S;McGarvey, JJ;Rooney, AD;Pryce, MT
2008
November
Journal of Physical Chemistry A
Photophysical and Electrochemical Properties of meso-Substituted Thien-2-yl Zn(II) Porphyrins
Published
24 ()
Optional Fields
PHOTOINDUCED ELECTRON-TRANSFER NONLINEAR-OPTICAL PROPERTIES CHARGE-TRANSFER COMPLEXES FULLERENE LINKED TRIADS ENERGY-TRANSFER FREE-BASE MESO-TETRATHIENYLPORPHYRINS TETRAARYL PORPHYRINS MAGNETIC-PROPERTIES REDOX PROPERTIES
112
11611
11618
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.
WASHINGTON
1089-5639
10.1021/jp805809p
Grant Details