Phosphorescence and Fluorescence of Phthalocyanines

• P. S. Vincett

  Departments of Physics and Chemistry, Simon Fraser University, Burnaby 2, British Columbia, Canada

• E. M. Voigt

  Departments of Physics and Chemistry, Simon Fraser University, Burnaby 2, British Columbia, Canada

• K. E. Rieckhoff

  Departments of Physics and Chemistry, Simon Fraser University, Burnaby 2, British Columbia, Canada

抄録

For the first time, phosphorescence has been observed from and clearly assigned to the molecular triplet of several metallophthalocyanine (Pc) molecules. The Pc's of Pt, Pd, Cu, Zn, and Cd have O–O bands in solution (77°K) at the extraordinarily low energies of 10 590, 10 100, 9390, 9150, and 9120 cm−1, respectively, while those of Mg and VO have possible transitions at ∼9000 and 8500–8800 cm−1. Half-widths, lifetimes, approximate quantum efficiencies, triplet absorption, and excitation spectra, and vibrational substructure are reported, together with oxygenation and heavy atom effects. The lifetimes were very short (varying from 1 msec to less than 3 μsec), so room temperature phosphorescence was seen, as was radiation from the separate triplet sublevels at 4°K and below. Yields were very low (∼10−2 to ∼10−5) because of very strong radiationless transitions, and various other Pc complexes did not seem to phosphoresce at all. Both tripdoublet and quartet luminescence were seen from CuPc, and the intersystem crossing time was estimated to be ∼1 nsec. Fluorescence is reported from several of the complexes, including PdPc.

収録刊行物

• The Journal of Chemical Physics

  The Journal of Chemical Physics 55 (8), 4131-4140, 1971-10-15

  AIP Publishing

キーワード

• Physical and Theoretical Chemistry
• General Physics and Astronomy

詳細情報

• CRID: 1361699995661399936
• NII論文ID: 30015693573
• DOI: 10.1063/1.1676714
• ISSN: 10897690
• ISSN: 00219606
• Web Site: https://pubs.aip.org/aip/jcp/article-pdf/55/8/4131/18875469/4131_1_online.pdf
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