186466-00-2Relevant academic research and scientific papers
Poling and crosslinking processes in NLO polymers
Bell, William K.,Rawlings, Brandon M.,Long, Brian K.,Webb, R. Chad,Keitz, B. Keith,H?u?ling, Lukas,Willson, C. Grant
, p. 2769 - 2775 (2014/11/07)
A series of photocrosslinkable polymers bearing hyperpolarizable side chain chromophores was synthesized, poled and evaluated on the basis of the thermal stability of Second Harmonic Generation (SHG). Photoinitiation allowed for control of the onset of curing. Crosslinking was monitored by infrared spectroscopy and optimal conversion was achieved by applying a slow temperature ramp during exposure. The ultimate stability of the poled polymers was directly related to the number of crosslinking substituents that were attached to the chromophore pendant group. With two reactive groups per chromophore significant SHG was retained at temperatures above the initial polymer glass transition temperature.
Synthesis of hydroxyalkyl-substituted, push-pull chromophores based on diphenylacetylenes and 1,4-bis(phenylethynyl)benzenes
Cross, Tara A.,Davis, Matthew C.
, p. 499 - 516 (2008/04/12)
Six new push-pull chromophores based on phenylacetylenes were prepared: two 1,2-diphenylacetylenes and four 1,4-bis(phenylethynyl)benzenes. The donor amino groups have hydroxyethyl substituents, and the acceptor groups are cyano or nitro. More soluble ver
