Design and Synthesis of Novel Side-Chain Polyquinolines and Polyimides for Second-Order Nonlinear Optics

1995 ◽  
Vol 413 ◽  
Author(s):  
A. K-Y. Jen ◽  
T.-A. Chen ◽  
Y.-M. Cai

ABSTRACTNovel approaches to second-order nonlinear optical (NLO) side-chain polyquinolines and polyimides are described. The syntheses and the characterization of the polymers are detailed. The electro-optical coefficients (r33), temporal stability of dipole alignment, and other physical properties of the NLO polymers are presented.

1993 ◽  
Vol 328 ◽  
Author(s):  
R. J. Jeng ◽  
G. H. Hsiue ◽  
J. I. Chen ◽  
S. Marturunkakul ◽  
L. Li ◽  
...  

ABSTRACTA new class of organic sol-gel second-order nonlinear optical (NLO) Materials based on hexa (Methoxymethyl) Melamine has been investigated. NLO active chromophores, 4- (4′-nitrophenylazo) aniline and 4-amino-4′-nitrobiphenyl, were incorporated into the Melamine Matrices. Samples exhibit second-order optical nonlinearity after poling and curing at 220 °C for 30 Min. The synthesis, preparation, and characterization of these materials are reported.


1995 ◽  
Vol 7 (6) ◽  
pp. 1237-1242 ◽  
Author(s):  
Chanfeng Zhao ◽  
Chi-Kyun Park ◽  
Paras N. Prasad ◽  
Yue Zhang ◽  
Saswati Ghosal ◽  
...  

1995 ◽  
Vol 392 ◽  
Author(s):  
Xiaoguang Yang ◽  
Duncan McBranch ◽  
Basil Swanson ◽  
Dequan Li

AbstractThe design and synthesis of a family of calix[4]arene-based nonlinear optical (NLO) chromophores are discussed. The calixarene chromophores are macrocyclic compounds consisting of four simple D-π-A units bridged by methylene groups. These molecules were synthesized such that four D-π-A units of the calix[4]arene were aligned along the same direction with the calixarene in a cone conformation. These nonlinear optical super-chromophores were subsequently fabricated into covalently bound self-assembled monolayers on the surfaces of fused silica and silicon. Spectroscopic second harmonic generation (SHG) measurements were carried out to determine the absolute value of the dominant element of the second-order nonlinear susceptibility, d33, and the average molecular alignment, ψ. We find a value of d33 = 60 pm/V at a fundamental wavelength of 890 nm, and ψ˜ 36° with respect to the surface normal.


2006 ◽  
Vol 2 (6) ◽  
pp. 443-444 ◽  
Author(s):  
Jian-xun Hong ◽  
Jian-ping Chen ◽  
Xin-wan Li ◽  
Wei Chen ◽  
Tao Xie

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