Two new ligands L n: N,N-dibutyl-(4,5-diazafluorenyl-9-ylidene- penta-1,3-dienyl)-amine (L 2) and 9-[(1-azulenyl)methylene]-4,5- diazafluorene (L 3), along with the related Zn(ii) complexes with ancillary ligands of different electron withdrawing strengths ([Zn(CH 3CO 2) 2L n], [Zn(CF 3CO 2) 2L n] and [Zn(CF 3SO 3) 2L n]) were prepared and characterized. Their remarkable second-order NLO properties were investigated using the EFISH technique. The μβ 1.91 value of [Zn(CF 3SO 3) 2L 2] is strongly dependent on concentration, reaching, to our knowledge, the highest value reported for a Zn(ii) complex.

Novel highly conjugated push–pull 4,5-diazafluoren-9-ylidene based efficient NLO chromophores as a springboard for coordination complexes with large second-order NLO properties / A. Colombo, C. Dragonetti, S. Righetto, D. Roberto, A. Valore, T. Benincori, F. Colombo, F. Sannicolò. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - 22:37(2012), pp. 19761-19766.

Novel highly conjugated push–pull 4,5-diazafluoren-9-ylidene based efficient NLO chromophores as a springboard for coordination complexes with large second-order NLO properties

A. Colombo
Primo
;
C. Dragonetti
Secondo
;
S. Righetto;D. Roberto;A. Valore;F. Sannicolò
Ultimo
2012

Abstract

Two new ligands L n: N,N-dibutyl-(4,5-diazafluorenyl-9-ylidene- penta-1,3-dienyl)-amine (L 2) and 9-[(1-azulenyl)methylene]-4,5- diazafluorene (L 3), along with the related Zn(ii) complexes with ancillary ligands of different electron withdrawing strengths ([Zn(CH 3CO 2) 2L n], [Zn(CF 3CO 2) 2L n] and [Zn(CF 3SO 3) 2L n]) were prepared and characterized. Their remarkable second-order NLO properties were investigated using the EFISH technique. The μβ 1.91 value of [Zn(CF 3SO 3) 2L 2] is strongly dependent on concentration, reaching, to our knowledge, the highest value reported for a Zn(ii) complex.
Settore CHIM/03 - Chimica Generale e Inorganica
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/207072
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