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Potentially photorefractive molecules, which possess both a charge transfer component and a nonlinear optical chromophore, were prepared by the direct N-monoalkylation of Disperse Orange 3 (1) with a carbazole alkyl bromide (2) utilizing phase transfer catalysis. Further N-alkylation of the remaining active N-H with alkyl halides with various chain lengths allowed the thermal properties of the Disperse...
A series of new chiral donor-acceptor substituted mono- (1a,b), bi- (2a,b,f) and terthiophenes (3) as well as thienyl- and bithienylpyridinium salts 1d-f and 2i-k with various counterions has been synthesized. This class of thiophenes exhibit excellent molecular nonlinear optical properties such as second-order polarizabilities β or second-order hyperpolarizabilities γ. With respect to an application...
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