Outstanding Poling Stability of a New Cross-Linked Nonlinear Optical (NLO) Material from a Low Molecular Weight Chromophore

被引：24

作者：

Borbone, Fabio ^{[1
]}

Carella, Antonio ^{[1
]}

Roviello, Antonio ^{[1
]}

Casalboni, Mauro ^{[2
,3
]}

De Matteis, Fabio ^{[2
,3
]}

Stracci, Glauco ^{[2
,3
]}

della Rovere, Fabio ^{[4
]}

Evangelisti, Andrea ^{[4
]}

Dispenza, Massimiliano ^{[4
]}

机构：

[1] Univ Naples Federico II, Dipartimento Chim, I-80126 Naples, Italy

[2] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[3] INSTM, I-00133 Rome, Italy

[4] Selex Sistemi Integrati, I-00131 Rome, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2011年 / 115卷 / 42期

关键词：

STABLE ELECTROOPTIC ACTIVITIES; PUSH-PULL CHROMOPHORES; 2ND-ORDER NONLINEARITY; POLYMER MATERIALS; HIGHLY EFFICIENT; HOST POLYMER; POLYIMIDES; POLYURETHANES; ULTRALARGE; FILMS;

D O I：

10.1021/jp204545k

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：

In this paper we report the synthesis and characterization of a trihydroxylated nonlinear optical (NLO) azochromophore and its functionalization with 2,4-tolylendiisocyanate (TDI) to give an amorphous mixture of isomers that was used as a starting compound for the preparation of crosslinked electro-optic (EO) thin films. An unedited type of thermal cross-linking reaction was used, exploiting the reactivity of isocyanate groups themselves in the presence of N,N-dimethylacetamide, without the addition of any hydroxylated comonomer as usual in the preparation of polyurethanes. Thin films were prepared by spin coating and corona poled during thermal cross-linking. A d(33) value of 33 pm/V was obtained by second-harmonic generation (SHG) measurements on poled films, and an excellent stability of SHG signal was shown upon aging at 130 degrees C and during dynamic thermal stability measurements.

引用

页码：11993 / 12000

页数：8

共 43 条

[1] CROSS-LINKED POLYMER MATERIALS FOR NONLINEAR OPTICS .2. POLYURETHANES BEARING AZOBENZENE DYES [J].