Photon-Gated Spectral Hole-Burning via Donor-Acceptor Electron Transfer.
Abstract
We have observed photon-gated spectral hole-burning (i.e., enhanced hole production in the presence of an additional gating light source) for a derivative of zinc-tetrabenzoporphyrin in poly(methyl methacrylate) thin films in the presence of chloroform acceptor molecules. Gated holes form when single frequency laser radiation excites the 0-0 singlet absorption at 630 nm simultaneous with triplet-triplet excitation by the gating action spectrum suggests that the mechanism is electron transfer from an excited triplet of the porphyrin donor to the chloroform acceptor. This is the first clear example of persistent spectral hole-burning via donor-acceptor electron transfer; further, the photon-gating characteristics can be modified by altering the acceptor concentration. Keywords: low temperature photochemistry.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1986
- Accession Number
- ADA173238
Entities
People
- C. Brauchle
- M. Manavi
- T. P. Carter
- V. Y. Lee
- W. E. Moerner
Organizations
- International Business Machines Corporation (Armonk, NY)