EMISSIVE AND BROADBAND NONLINEAR ABSORBING METAL COMPLEXES AND LIGANDS AS OLED, OPTICAL SWITCHING OR OPTICAL SENSING MATERIALS
申请人:Sun Wenfang
公开号:US20120100628A1
公开(公告)日:2012-04-26
Platinum (II) terdentate or bidentate complexes with non-linear optical properties are provided. The complexes have a broadband spectral and temporal response, and strong reverse saturable absorption and two-photon absorption in the visible and the near-IR region. As such, the complexes are useful for organic light-emitting diodes and optical-switching or sensing devices.
Photophysics of Pt(II) 4,6-diphenyl-2,2′-bipyridyl complexes in solution and in LB film
作者:Iswarya Mathew、Wenfang Sun
DOI:10.1016/j.jorganchem.2009.05.005
日期:2009.8
Two amphiphilic platinum(II) 4,6-diphenyl-2,2'-bipyridyl complexes (1 and 2) were synthesized and characterized. LB films of these two complexes were prepared and characterized by AFM technique. Electronic absorption and emission characteristics of these complexes in solutions at room temperature, in glassy solutions at 77 K, and in LB films were studied. The emission energies of the complexes in LB films are similar to those in acetonitrile solutions at room temperature. However, the lifetimes of 1 and 2 in LB films are 4-7 times as long as those in CH3CN solutions. The triplet transient difference absorption spectra of these complexes exhibit broad absorption in the visible region to the near-IR region. Introducing a hydroxyl substituent on the 4,6-diphenyl-2,2'-bipyridyl ligand favors the formation of intermolecular hydrogen bonding and thus helps the deposition of uniform and stable LB films and increases the self-quenching rate constant for emission of 2 in CH3CN solution. (C) 2009 Elsevier B. V. All rights reserved.
Silver halide color photographic lightsensitive material
申请人:FUJIFILM Corporation
公开号:EP1363161B1
公开(公告)日:2007-09-12
Cyclometalated Platinum(II) 6-Phenyl-4-(9,9-dihexylfluoren-2-yl)-2,2′-bipyridine Complexes: Synthesis, Photophysics, and Nonlinear Absorption
作者:Pin Shao、Yunjing Li、Jing Yi、Timothy M. Pritchett、Wenfang Sun
DOI:10.1021/ic902281a
日期:2010.5.17
excited-state absorption cross sections. The degree of reversesaturableabsorption follows this trend: F-1 = F-2 > F-3 > F-4 > F-5, which is mainly determined by the ratio of the triplet excited-state absorption cross-section to that of the ground-state and the triplet excited-state quantum yield. Comparison of the photophysics of F-1, F-2, and F-3 to those of their corresponding Pt complexes without the