Deep-red luminescence and efficient singlet oxygen generation by cyclometalated platinum(II) complexes with 8-hydroxyquinolines and quinoline-8-thiol

作者：Shavaleev Nail M; Adams Harry; Best Jonathan; Edge Ruth; Navaratnam Suppiah; Weinstein Julia A^*

来源：Inorganic Chemistry, 2006, 45(23): 9410-9415.

DOI：10.1021/ic061283k

The synthesis and photophysical study of (C boolean AND N)Pt(II)Q complexes, where C boolean AND N is a bidentate cyclometalating ligand and Q is 8-hydroxyquinoline or quinoline-8-thiol, are presented. The compounds were obtained as a single isomer with N atoms of the C boolean AND N and Q ligands trans-coordinated to the PtII center as shown by X-ray crystallography. These chromophores absorb intensely in the visible region and emit in the deep-red spectral region from a quinolate-centered triplet intraligand charge-transfer excited state. The emission maxima are in the range 675-740 nm, with the quantum yields and lifetimes of up to 0.82% and 5.3 mu s, respectively, in deoxygenated organic solvents at room temperature. These complexes are efficient photosensitizers of singlet oxygen in air-saturated solutions, with yields up to 90%.

• 出版日期2006-11-13