| Metal Ion Enhanced Phosphorescence of 2,3—Naphtho—10—aza—15—crown—5：A Possible Molecular Photonic Operator |
| |
| 引用本文： | LI，Li－Qian CHE，Chi－Ming 等. Metal Ion Enhanced Phosphorescence of 2,3—Naphtho—10—aza—15—crown—5：A Possible Molecular Photonic Operator[J]. 中国化学, 2002, 20(2): 135-141. DOI: 10.1002/cjoc.20020200205 |
| |
| 作者姓名： | LI，Li－Qian CHE，Chi－Ming 等 |
| |
| 作者单位： | [1]TechnicalInstituteofPhysicsandChemistry,ChineseAcademyofSciences,Beijing100101,China [2]DepartmentofChemistry,TheUniversityofHongKong,HongKong,China |
| |
| 基金项目： | theMinistryofScienceandTechnologyofChina (Nos.G 2 0 0 0 0 7810 4andG 2 0 0 0 0 775 0 2 )，theNationalNatu ralScienceFoundationofChina (Nos.2 0 0 730 5 1and 2 9972 0 4 2 ) |
| |
| 摘 要： | A novel crown ether,2,3-naphtho-10-aza-15-crown-5(NAC) was synthesized.This compound does not show strong fluorescence and phosphorescence due to photoinduced intramolecular electron transfer from the nitrogen lone pair of electrons to the singlet excited state of the naphthalene chromophore.Complexation with heavy-metal ions results in the quenching of the fluorescence and enhancement of the phosphorescence significantly.These observations were interpreted in terms of the binding interactions,between the nitrogen lone pair electrons and the metal cation,which prevent photoinduced intramolecular electron transfer,and the heavy-atom effects which induce quenching of the fluorescence and enhancement of the phosphorescence.These azacrown and heavy-metalbased systems could be useful as potential chemical sensors and molecular photonic devices.
|
| 关 键 词： | 2，3－萘－10－氮杂－15－冠醚－5 电化学传感器 磷光现象 金属离子 |
Metal Ion Enhanced Phosphorescence of 2,3-Naphtho-10-aza-15-crown-5: A Possible Molecular Photonic Operator |
| |
| LI,Li Qian a ZHANG,Li Ping WU,Li ZhuWANG,Bo Jie a TUNG,Chen Ho a CHE,Chi Ming b aTechnical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing ,China b. Metal Ion Enhanced Phosphorescence of 2,3-Naphtho-10-aza-15-crown-5: A Possible Molecular Photonic Operator[J]. Chinese Journal of Chemistry, 2002, 20(2): 135-141. DOI: 10.1002/cjoc.20020200205 |
| |
| Authors: | LI Li Qian a ZHANG Li Ping WU Li ZhuWANG Bo Jie a TUNG Chen Ho a CHE Chi Ming b aTechnical Institute of Physics Chemistry Chinese Academy of Sciences Beijing China b |
| |
| Affiliation: | LI,Li Qian a ZHANG,Li Ping WU,Li ZhuWANG,Bo Jie a TUNG,Chen Ho a CHE,Chi Ming b aTechnical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100101,China bDepartment of Chemistry,The University |
| |
| Abstract: | A novel crown ether, 2,3 naphtho 10 aza 15 crown 5 (NAC) was synthesized. This compound does not show strong fluorescence and phosphorescence due to photoinduced intramolecular electron transfer from the nitrogen lone pair of electrons to the singlet excited state of the naphthalene chromophore. Complexation with heavy metal ions results in the quenching of the fluorescence and enhancement of the phosphorescence significantly. These observations were interpreted in terms of the binding interactions, between the nitrogen lone pair electrons and the metal cation, which prevent photoinduced intramolecular electron transfer, and the heavy atom effects which induce quenching of the fluorescence and enhancement of the phosphorescence. These azacrown and heavy metal based systems could be useful as potential chemical sensors and molecular photonic devices. |
| |
| Keywords: | photoinduced intramolecular electron transfer energy transfer 2 3 naphtho 10 aza 15 crown 5 |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
