The unexpected similar second-order NLO response for nearly planar and largely twisted push-pull stilbazole chromophores: EFISH and theoretical TD-DFT evidence |
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Authors: | Locatelli Danika Quici Silvio Roberto Dominique De Angelis Filippo |
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Institution: | Dipartimento di Chimica Inorganica, Metallorganica e Analitica dell' Università di Milano, via Venezian 21, I-20133 Milano, Italy. |
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Abstract: | The molecular second-order nonlinear optical properties of planar (E)-4-2-(4-(N-methyl-N-hexadecylaminophenyl)ethenyl]pyridine (L1) and cis-Ir(CO)2ClL1] and of the significantly twisted new chromophores (E)-4-(5,6,7,8-tetrahydro-5-isoquinolylidene)methyl]-N-methyl-N-hexadecylaniline (L2) and cis-Ir(CO)2ClL2] are reported, evidencing for the first time that planarity of a conventional (donor)(pi-bridge)(acceptor) structure is not compulsory to reach a large NLO response. |
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