2015 Fiscal Year Final Research Report
Evaluation of basic properties of unusual white-color fluorescence from room-temperature sysnthesized quantum dots
| Project/Area Number |
26600029
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Nanomaterials chemistry
|
|---|
| Research Institution | Josai University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
UWADA Takayuki 城西大学, 理学部・化学科, 助教 (30455448)
|
|---|
| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Keywords | 量子ドット / 蛍光 / CdSe |
|---|
| Outline of Final Research Achievements |
The method of dispersing as-prepared CdSe quantum dots (QDs) covered with a coordinating solvent in chloroform is widely known as a common technique for preparing QD samples in solution. We have followed such procedure involving chloroform and repoeted unusual spectrally-broad florescence, or white-light fluorescence from CdSe QDs in chloroform in our published paper. In the present work we used dichloromethane instead of chloroform and found blue fluorescence at the maximum of 400 nm. Starting from this surprising observation we have critically examined solvent effects of the fluorescence spectra of CdSe QDs, especially focusing the use of solvents involving chlorine, and successfully obtained clue to clearly understand possible mechanism of formation of QDs in solution and the role of coordinating solvents on the surfaces of QDs.
|
| Free Research Field |
ナノ粒子に関する光物理化学
|
