Temperature-dependent helix–helix transition of an optically active poly(diarylsilylene)Electronic supplementary information (ESI) available: polymer syntheses, fluorescence excitation and NMR data for 1–3. See http://www.rsc.org/suppdata/cc/a9/a909368k/

Abstract

The poly(diarylsilylene) copolymer mainchain helix in (Ar*₂Si)_x(Ar₂S i)_1−x [Ar* = 3-(S)-2-methylbutylphenyl, Ar = 4-butylphenyl, x = 0.2] undergoes a thermally driven inversion of helical screw sense with a transition temperature of −10 °C.