Design and synthesis of ruthenium oligothienylacetylide complexes. New materials for acoustically induced nonlinear optics

被引:79
作者
Fillaut, JL
Perruchon, J
Blanchard, P
Roncali, J
Golhen, S
Allain, M
Migalska-Zalas, A
Kityk, IV
Sahraoui, B
机构
[1] Univ Rennes 1, Inst Chim Rennes, CNRS, UMR 6509, F-35042 Rennes, France
[2] Univ Angers, Lab CIMMA, CNRS, UMR 6200, F-49045 Angers, France
[3] Univ Rennes 1, Chim Solide & Inorgan Mol Lab, CNRS, UMR 6511, F-35042 Rennes, France
[4] Univ Angers, Lab POMA, CNRS, UMR 6136, F-49045 Angers, France
[5] Univ Czestochowa, Inst Phys WSP, PL-42217 Czestochowa, Poland
关键词
D O I
10.1021/om049236s
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A series of new donor-pi-acceptor ruthenium acetylide systems built around thiophene-based pi-conjugating spacers of different lengths have been developed. Comparison of the linear and third-order nonlinear optical properties of these donor-pi-acceptor chromophores shows that the elongation of the oligothiophene-based spacer or further introduction of a double bond leading to a dithienylethylene spacer produces a considerable bathochromic shift of the absorption maximum together with a dramatic enhancement of the molecular cubic hyperpolarizability. Furthermore acoustically induced second-harmonic generation (AISHG) has been observed for film composites of these complexes incorporated in PMMA matrixes and reaches values among the highest reported so far.
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页码:687 / 695
页数:9
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