Stable SHG from in situ grown oriented nanocrystals of [(E)-N,N-dimethylamino-N′-methylstilbazolium][p-toluenesulfonate] in a PMMA film

被引：41

作者：

Macchi, Roberto ^{[1
,2
]}

Cariati, Elena ^{[1
,2
]}

Marinotto, Daniele ^{[1
,2
]}

Roberto, Dominique ^{[1
,2
]}

Tordin, Elisa ^{[1
,2
]}

Ugo, Renato ^{[1
,2
]}

Bozio, Renato ^{[3
,4
]}

Cozzuol, Matteo ^{[3
,4
]}

Pedron, Danilo ^{[3
,4
]}

Mattei, Giovanni ^{[5
]}

机构：

[1] Univ Milan, UdR INSTM Milano, Dipartimento Chim Inorgan Metallorgan & Analit La, I-20133 Milan, Italy

[2] Univ Milan, UdR INSTM Milano, Ctr Eccellenza CIMAINA, I-20133 Milan, Italy

[3] Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy

[4] UdR INSTM Padova, I-35131 Padua, Italy

[5] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 10期

关键词：

NONLINEAR-OPTICAL PROPERTIES; LANGMUIR-BLODGETT-FILMS; FIELD-INDUCED ORIENTATION; MIXED-METAL OXALATES; 2ND-HARMONIC GENERATION; WAVE-GUIDES; THIN-FILMS; ORGANIC MICROCRYSTALS; HYBRID NANOPARTICLES; MAGNETIC-PROPERTIES;

D O I：

10.1039/b922185a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Poly(methyl methacrylate) (PMMA) films with 4 wt% of the ionic second order NLO chromophore[(E)-N, N-dimethylamino-N'-methylstilbazolium][p-toluenesulfonate] (DAST), obtained by spin-coating of CHCl3-CH3OH (2/1) solutions, show in situ growth of homogeneously dispersed oriented nanocrystals with sizes of less than 100 nm, as supported by TEM and GIXRD evidence. This is achieved by a two step process: corona poling at 8 kV and 90 degrees C followed, in the absence of electric field, by controlled thermal annealing up to 140 degrees C. The final film shows a significant and enduring second harmonic generation (SHG) at room temperature.

引用

页码：1885 / 1890

页数：6

共 71 条

[1] LANGMUIR-BLODGETT ALIGNMENT OF ZWITTERIONIC OPTICALLY NONLINEAR D-PI-A MATERIALS [J].