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18 December 2002 Photocrosslinking and SHG stability of PDRMA/PDRFC thin films
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Abstract
A series of functional and photo-crosslinkable maleate or fumarate type polyesters containing azo-type NLO chromophores were studied. The result demonstrated this is a versatile and convenient method of fabricating crosslinked supramolecular ultra-structure polymer thin films for potential nonlinear optical (NLO) and other photonic applications. The unsaturated PDRMA/PDRFC polyester thin films are capable of crosslinking in air via photo polymerization to form a hardened lattice. A ratio of 1:1 of crosslinker double bonds to polyester double bonds was preferred for optimal crosslinking. Thermal stability of Second Harmonic Generation (SHG) signals for a photo crosslinked polymer thin film reached to about 150°C. Films from photo crosslinking of fumarate or maleate vs. vinyl crosslinkers have the advantages of avoiding NH/OH groups and their vibrational overtones that absorb at telecommunication wavelength of 1550 nm.
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Shahin Maaref, Zeina M. Roz, Sam-Shajing Sun, Kang Seo, Carl E. Bonner Jr., Richard R. Barto, and Curtis W. Frank "Photocrosslinking and SHG stability of PDRMA/PDRFC thin films", Proc. SPIE 4798, Linear and Nonlinear Optics of Organic Materials II, (18 December 2002); https://doi.org/10.1117/12.451926
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