2015 Fiscal Year Final Research Report
Constructions and Applications of Cavitand-Based Capsules as Functional Self-Assembled Nanospace
Project/Area Number |
25288034
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Functional solid state chemistry
|
Research Institution | Shizuoka University |
Principal Investigator |
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Keywords | 分子自己集合 / 超分子 / カプセル / 水素結合 / 大環状化合物 / 動的共有結合 / キラリティー / 光応答性 |
Outline of Final Research Achievements |
(1) We found that a dumbbell type pyridyl-cavitand and a dumbbell type phenol-cavitand with long flexible spacers self-assemble into a super-macrocyclic dimer (supramolecular giant ring) based on hydrogen-bonded hetero-capsule as a connector, without formation of a supramolecular polymer. (2) We found that a self-assembled boronic ester cavitand capsule encapsulates one molecule of BPEA derivatives as optical functional guests, which show greater resistance to photochemical reactions and enhancement of photophysical properties such as two-photon absorption, compared to free guests. We also found that this type of a chiral capsule induces supramolecular chirality with respect to a prochiral biphenyl guest by diastereomeric encapsulation. (3) We found the self-assembly of calix[4]resorcinarene bearing azobenzene-dendron conjugates as side chains into a hexameric capsule with photoresponsive properties that releases encapsulated guest molecule upon UV irradiation.
|
Free Research Field |
超分子化学・構造有機化学
|