2019 Fiscal Year Annual Research Report
Stimuli-Responsive Luminescent Material Based on Supramoleculary Hybridized Hierarchical Assembly
| Project/Area Number |
18J22756
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
ZHANG XUJIE 東京大学, 工学系研究科, 特別研究員(DC1)
|
|---|
| Project Period (FY) |
2018-04-25 – 2021-03-31
|
| Keywords | Supramolecular Polymer / Liquid Crystal / Chirality |
|---|
| Outline of Annual Research Achievements |
Liquid crystal (LC) is thought to be an organized solvent(media). Recently, our group reported a system in which chiral disc-shaped molecule supramolecularly polymerize in and co-assemble with an achiral LC-forming rod-shaped molecule resulting as a hybrid columnar LC. During this supramolecular polymerization, chirality is transferred to liquid crystalline media from supramolecular polymer. Another merit of this work is, mixability (or in other word, solubility) of disc in rod from dilution to concentrate could be easily ensured. Inspired by this previous work, the present research introduced a chiral LC-forming media 5*CB, to act as chiral auxiliary/promoter in which disc-shaped molecule OCBTPP could supramolecularly polymerize into one-handed helical structure. In highly dilute liquid state, these supramolecular polymers are dispersed showing low CD signal, while in concentrated LC state, the CD signal dramatically increased.
And my research has two progress as below:
(1) Symmetry Breaking induced by Chiral Liquid Crystalline Media: The construction of a one-handed hybrid columnar LC with porphyrin-core disc-shaped molecule and chiral LC-forming rod-shaped molecule.
(2) Col LC Enhanced Chirality of Supramolecular Polymer detected by Anisotropic Dissymmetry Factor: The lattice facilitates chiral transfer in columnar liquid crystalline phase c
|
| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
This project goes well and goes beyond what we expected.
After he modified the synthesis route for our special system. With the new discotic molecule, he found some interesting phenomenon on chiral transfer effect and he is now working on this phenomenon.
This work might be published on a high impact journal.
|
| Strategy for Future Research Activity |
SInce we successfully fabricated a highly helical system with the largest anisotropic dissymmetry factor g-value. we are tring to test the circular polarised light behavior of our liquid crystal
|
