Accession Number : ADP008252

Title :   Photon-Gated Photochemical Hole Burning in Zinc-Tetrabenzoporphyrin/Aromatic Cyanide System,

Corporate Author : ACADEMIA SINICA BEIJING (CHINA)

Personal Author(s) : Lizeng, Zhao ; Zhengzhong, Lu ; Xiulang, Zhang ; Dongxiang, Zhang

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : The group of Moerner,et al., first reported two-color hole-burning by donor-acceptor electron transfer for a derivative of zinc as a donor with halomethane acceptors in a poly(methyl methacrylate) (PMMA) thin film. Their results have opened up a new class of materials for photon-gating. We report a new example of photon-gated photochemical hole burning (PHB) in which donor-acceptor electron transfer is responsible for hole formation. The donor molecules are also derivatives of tetrabenzoporphyrin, one of which is meso-tetra(p-tolyl)-zinc (TZT). The host matrix is PMMA. The acceptor can be one of several aromatic cyanide (AC) for example, cyanoanthracene, cyanonaphthalene, and cyanobenzene etc.. The TZT donor molecule was synthesized by a modified procedure and purified by extraction and liquid chromatography. The PMMA host used Mp-105, Mw/Mn=2.0. Aromatic cyanide are obtained from Aldrich Chemicals. Optical samples were prepared by mixing the chloroform solution of TZT, AC and PMMA in appropriate ratio and evaporating the solvent on the optical glass.

Descriptors :   *MOLECULAR SPECTROSCOPY, CHLOROFORM, CHROMATOGRAPHY, COLORS, CYANIDES, ELECTRON TRANSFER, ELECTRONS, EXTRACTION, GLASS, LIQUID CHROMATOGRAPHY, METHACRYLATES, MIXING, MOLECULES, OPTICAL GLASS, PHOTONS, SOLVENTS, THIN FILMS, ZINC, PHOTOCHEMICAL REACTIONS, OPTICAL PROPERTIES.

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE