2013 Fiscal Year Final Research Report
Photo-excited carrier dynamics in super-molecular complex with molecular recognition function
| Project/Area Number |
23654106
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Condensed matter physics I
|
|---|
| Research Institution | Sophia University |
|---|
Principal Investigator |
EMA Kazuhiro 上智大学, 理工学部, 教授 (40194021)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
KUNUGITA Hideyuki 上智大学, 理工学部, 助教 (50296886)
HYASHITA Takashi 上智大学, 理工学部, 教授 (70183564)
HASHIMOTO Takeshi 上智大学, 理工学部, 助教 (20333049)
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Keywords | 光物性 / 超分子 / 光誘起電子移動 / 糖認識 |
|---|
| Research Abstract |
An inclusion complex consisting of a boronic acid fluorophore (C1-APB) and b-cyclodextrin (b-CyD) acts as a supramolecular sugar sensor whose response mechanism is based on photoinduced electron transfer (PET) from the excited pyrene to the boronic acid. We have investigated the PET process in the C1-APB/CyD complexes by using time-resolved photoluminescence (TRPL) measurements at room temperature, and have succeeded in estimating of the electron-transfer time to be about 1 ns. We have also studied the effects of CyDs on the PET process by comparing two kinds of CyDs (a-CyD, b-CyD) under different water-dimethyisulfoxide (DMSO) concentration conditions, and have found that the CyDs interacting with the boronic acid moiety completely inhibits PET quenching and increases monomer fluorescence intensity.
|
