Abstract
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.
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Abbreviations
- Col:
-
Columnar
- Cr:
-
Crystalline
- Cub:
-
Cubic
- G:
-
Glassy
- Iso:
-
Isotropic
- LC:
-
Liquid-crystalline
- N:
-
Nematic
- SmA:
-
Smectic A
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Acknowledgments
We would like to thank the Japan Society of the Promotion of Science (JSPS) for financial support. Partial financial support from Grant-in-Aid for a Scientific Research on Innovative Areas of “Fusion Materials” (No. 2206) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) is gratefully acknowledged. S. Y., K. T., and Y. S. are grateful for financial support from the JSPS Research Fellowship for Young Scientists.
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Yamane, S., Tanabe, K., Sagara, Y., Kato, T. (2011). Stimuli-Responsive Photoluminescent Liquid Crystals. In: Tschierske, C. (eds) Liquid Crystals. Topics in Current Chemistry, vol 318. Springer, Berlin, Heidelberg. https://doi.org/10.1007/128_2011_275
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DOI: https://doi.org/10.1007/128_2011_275
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