Stimuli-responsive photoluminescent liquid crystals.
We describe mechanochromic and thermochromic photoluminescent liquid crystals. In particular, mechanochromic photoluminescent liquid crystals found recently, which are new stimuli-responsive materials are reported. For example, photoluminescent liquid crystals having bulky dendritic moieties with long alkyl chains change their photoluminescent colors by mechanical stimuli associated with isothermal phase transitions. The photoluminescent properties of molecular assemblies depend on their assembled structures. Therefore, controlling the structures of molecular assemblies with external stimuli leads to the development of stimuli-responsive luminescent materials. Mechanochromic photoluminescent properties are also observed for a photoluminescent metallomesogen and a liquid-crystalline polymer. We also show thermochromic photoluminescent liquid crystals based on origo-(p-phenylenevinylene) and anthracene moieties and a thermochromic photoluminescent metallocomplex.
Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Shogo
S
Yamane
Kana
K
Tanabe
Yoshimitsu
Y
Sagara
Takashi
T
Kato
D000873:Anthracenes / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry; D050866:Liquid Crystals / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D055595:Mechanical Phenomena; D008958:Models, Molecular; D015394:Molecular Structure; D044367:Phase Transition; D011108:Polymers / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry; D013696:Temperature
D000873:Anthracenes; D056831:Coordination Complexes; D049408:Luminescent Agents; D011108:Polymers; D011145:Polyvinyls; C422409:liquid crystal polymer; C530822:oligo(p-phenylene vinylene); C034020:anthracene