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Abstract
Homopolysiloxanes poly(1) and poly(2) and copolysiloxanes poly(1-co-3) were synthesized. Their mesophase structures were investigated by X-ray diffraction, and the electron density profiles along the layer normal were derived. A linear response with the applied electric field was detected in the chiral smectic (C* or A*) phases of poly(1) and poly(2).