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Title of article :
Synthesis, characterization, luminescence and nonlinear optical (NLO) properties of truxene-containing platinum(II) alkynyl complexes
Author/Authors :
Carmen Ka Man Chan، نويسنده , , Chi-Hang Tao، نويسنده , , King-Fai Li، نويسنده , , Keith Man-Chung Wong، نويسنده , , Nianyong Zhu، نويسنده , , Kok Wai Cheah، نويسنده , , Vivian Wing-Wah Yam، نويسنده ,
Issue Information :
دوفصلنامه با شماره پیاپی سال 2011
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Abstract :
A series of luminescent trinuclear platinum(II) alkynyl complexes containing dihydro-5H-diindeno[1,2-a;1′,2′-c]fluorene (truxene) as the core and aryl alkynyl ligands with different electronic properties at the periphery has been successfully synthesized and characterized. The electronic absorption, emission, nanosecond transient absorption and electrochemical properties of these complexes have been reported. These complexes showed long-lived emissions in degassed benzene solution at room temperature, and their emissions have been assigned to originate from triplet states of intraligand (IL) character with some mixing of metal-to-ligand charge-transfer (MLCT) character. The luminescent platinum(II) alkynyl complexes are found to show two-photon absorption (2PA) and two-photon induced luminescence (TPIL) properties, and their two-photon absorption cross-sections have been determined to be 6–51 GM upon excitation at 720 nm.
Keywords :
Metal alkynyls , Two-photon induced luminescence , Transient absorption , Truxene , Luminescence , Platinum(II) complexes
Journal title :
Journal of Organometallic Chemistry
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