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Graphical abstract A series of truxene-containing alkynylplatinum(II) terpyridine complexes has been synthesized, which are found to show two-photon absorption and two-photon induced luminescence properties. A high two-photon absorption cross-section has been achieved for the trinuclear platinum(II) complex, which might provide insights into the future design of related complexes with non-linear optical properties. Abstract A series of truxene-containing alkynylplatinum(II) terpyridine complexes has been designed and synthesized, with their UV–vis absorption and emission properties determined. The two-photon absorption and two-photon induced luminescence properties for selected complexes have also been evaluated. More interestingly, an enhancement in the two-photon absorption cross-section has been achieved and demonstrated by increasing the number of platinum(II) terpyridine moieties in the molecular design. [ABSTRACT FROM AUTHOR]

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. [Copyright &y& Elsevier]

Abstract: A series of luminescent carbazole-containing palladium(II) and platinum(II) alkynyl complexes has been successfully synthesized and characterized. Through a systematic comparison study, the emission of the platinum(II) bis-alkynyl complexes has been assigned to originate from an admixture of 3IL/3MLCT excited states with predominantly IL character. [Copyright &y& Elsevier]

A correction to the article "A Branched Luminescent Multinuclear Platinum (II) Complex," by Hui Yang and colleagues, published in the 2011 issue is presented.