Koo, Jahyeon Jang, Junhwa Lim, Seok-In Oh, Mintaek Lee, Kyung Min McConney, Michael E. De Sio, Luciano Kim, Dae-Yoon Jeong, Kwang-Un 2024-01-19T14:33:56Z 2024-01-19T14:33:56Z 2022-01-10 2021-05-01 2051-6347 https://pubs.kist.re.kr/handle/201004/117006 A self-crosslinkable side-chain liquid crystal polysiloxane containing cyanostilbene (Si-CSM) was newly synthesized for the development of a new generation of flexible optical paints. The photoisomerization of the cyanostilbene moiety at the molecular level was transferred and amplified to the phase transition of Si-CSM, resulting in changes in the macroscopic optical properties of the Si-CSM thin film. The self-crosslinking reaction between Si-H groups in the Si-CSM polymer backbone caused the self-crosslinked Si-CSM thin film to be very elastic and both thermally and chemically stable. Therefore, the self-crosslinked Si-CSM thin film endured stretching and bending deformations under relatively harsh conditions. In addition, the uniaxially oriented and self-crosslinked Si-CSM thin film generated linearly polarized light emission. Polarization-dependent and photopatternable secret coatings were fabricated via a spontaneous self-crosslinking reaction after coating the Si-CSM paint and irradiating ultraviolet (UV) light through a photomask. This newly developed flexible optical Si-CSM paint can be applied in next-generation optical coatings. English ROYAL SOC CHEMISTRY PHASE-TRANSITION PHOTOPHYSICAL PROPERTIES EMISSION POLYMERS PHOTOISOMERIZATION ELASTOMERS BEHAVIORS POLARIZER The transfer and amplification of cyanostilbene molecular function to advanced flexible optical paints through self-crosslinkable side-chain liquid crystal polysiloxanes Article 10.1039/d1mh00004g 1 MATERIALS HORIZONS, v.8, no.5, pp.1561 - 1569 MATERIALS HORIZONS 8 5 1561 1569 scie scopus 000632984300001 2-s2.0-85105885467 Chemistry, Multidisciplinary Materials Science, Multidisciplinary Chemistry Materials Science Article PHASE-TRANSITION PHOTOPHYSICAL PROPERTIES EMISSION POLYMERS PHOTOISOMERIZATION ELASTOMERS BEHAVIORS POLARIZER 유연신축기재 선형발광재료 액정성고분자 광학용페인트