| Project/Area Number |
16550065
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Analytical chemistry
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
MOROZUMI Tatsuya Hokkido Univ., Graduate School of Science, Assistant, 大学院・理学研究科, 助手 (50271713)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NAKAMURA Hiroshi Hokkaido Univ., Graduate School of Science, Professor, 大学院・地球環境科学研究科, 教授 (00117194)
|
|---|
| Project Period (FY) |
2004 – 2005
|
| Project Status |
Completed (Fiscal Year 2005)
|
| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2005: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2004: ¥1,900,000 (Direct Cost: ¥1,900,000)
|
|---|
| Keywords | photo induced charge transfer / twisted intrramolecular charge transfer / fluorophores / liner crownether / chemical sensors / "off-on" fluorescence response / anthracene aromatic amides / naphtylmethyl-N-phenyl amides / アントラセン芳香族アミド体 / OFF-ON蛍光シグナル / 光誘起電子移動の制御 / 直鎖状ポリエーテル / アルカリ土類金属イオン / 錯形成 |
|---|
| Research Abstract |
New fluorescent ionophores containing a series of anthracene aromatic amides and naphtylmethyl-N-phenyl amides moiety based on oligo-ethylene oxide have been synthesized and its photochemical behaviors have been studied. In the absence of metal ion, these amides moiety showed a weak fluorescence emission (fluorescence "off state"). However, complexation with Ca^<2+> induced a large enhancement effect on the fluorescence intensity of 1_4 and 1_5 from the naphthalene ring (fluorescence "on" state). This behavior can be explained by in terms of the similar twisted intramolecular charge transfer relaxation mechanism. Such an "off-on" fluorescence response provided the digital detection of alkaline earth metal ions.
|
