화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.621, No.1, 96-101, 2015
Properties of Some Polarized Chromophores in Polyvinylpyrrolidone
Poor miscibility of highly polarized chromophores to polymer matrices is a crucial issue for EO polymer development. By using poly(N-vinylpyrrolidone) (PVP) as a matrix polymer, we were able to prepare the uniform film containing ammonium-borate type zwitterions or Disperse Red 1 (DR1). For zwitterions, corona poling was unsuccessful probably because of hygroscopic property of PVP and/or strong intermolecular interaction to form the antiparallel dimers. For DR1, we found apparent color change originated from the H-aggregate formation assisted by moisture, which is usable to detect humidity. On the other hand, a passivation layer is necessary to use PVP for the EO applications.