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Titolo:
All sol-gel organic-inorganic nonlinear optical materials based on melamines and an alkoxysilane dye
Autore:
Hsiue, GH; Lee, RH; Jeng, RJ;
Indirizzi:
Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30043, Taiwan Natl Tsing Hua Univ Hsinchu Taiwan 30043 hem Engn, Hsinchu 30043, Taiwan Natl Chung Hsing Univ, Dept Chem Engn, Taichung 40227, Taiwan Natl Chung Hsing Univ Taichung Taiwan 40227 Engn, Taichung 40227, Taiwan
Titolo Testata:
POLYMER
fascicolo: 23, volume: 40, anno: 1999,
pagine: 6417 - 6428
SICI:
0032-3861(199911)40:23<6417:ASONOM>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPOSITE-MATERIALS; 2ND-ORDER; POLYMERS; NETWORKS; POLYMERIZATION; ROUTES; SYSTEM; SILICA;
Keywords:
sol-gel; melamines; alkoxysilane dye;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Hsiue, GH Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30043, Taiwan Natl Tsing Hua Univ Hsinchu Taiwan 30043 Hsinchu 30043, Taiwan
Citazione:
G.H. Hsiue et al., "All sol-gel organic-inorganic nonlinear optical materials based on melamines and an alkoxysilane dye", POLYMER, 40(23), 1999, pp. 6417-6428

Abstract

A series of all sol-gel organic-inorganic nonlinear optical materials based on the prepolymers of melamines and an alkoxysilane dye (ASD) were investigated. The NLO-active ASD containing nitroazobenzene was incorporated intothe melamine matrices with different weight ratios. This all sor-gel type is shown to have the advantages of simultaneous polymerizations, and bettercompatibility between two components due to residual hydroxyl and silanol groups after curing. The simultaneous route is often used to avoid significant phase separation in a multi-component system. SEM results indicate thatthe inorganic networks are distributed uniformly throughout the organic networks on a molecular scale. The silica particle sizes are well under 1 mu m. This series of all sol-gel materials exhibits large second-order opticalnonlinearity (d(33) = 10-54 pm/V at 1064 nm, and 3-17 pm/V at 1542 nm) after poling and curing. Temporal stability of the effective second harmonic coefficient at 100 degrees C is also reported. (C) 1999 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 10:48:41