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Citation: FENG Wen-Ke, KONG Sheng, XIAO Li-Xin, WANG Shu-Feng, NG Qi-Huang. Aggregation Induced Fluorescence Blue-Shift of Zinc Bis(8-hydroxyquinoline) Modified with Cholesteryl[J]. Acta Physico-Chimica Sinica, ;2010, 26(07): 1929-1933. doi: 10.3866/PKU.WHXB20100724 shu

Aggregation Induced Fluorescence Blue-Shift of Zinc Bis(8-hydroxyquinoline) Modified with Cholesteryl

1.
State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, P. R. China

Received Date: 15 March 2010
Available Online: 27 May 2010

Aggregation induced fluorescence blue-shift of the newly synthesized zinc bis (8-hydroxyquinoline) modified with cholesteryl (Zn(ChQ)2) is studied by static and picosecond transient emission spectroscopy. Fast solvent-induced charge transfer is found when Zn(ChQ)2 is dissolved in polar solvents. The twisted intramolecular charge transfer (TICT) state is formed as new emission state. Its emission spectra of Zn(ChQ)2 in aggregation form (film state) are blue-shifted compared to those in polar solvents. Steric hindrance induced weakened intermolecular interaction in aggregations lead to blue-shifted emission and enhanced quantum efficiency. Intermolecular energy transfer is found in solid filmand independent on emission wavelength.
- Intramolecular electron transfer,
- Zinc bis(8-hydroxyquinoline),
- Cholesteryl,
- Aggregation induced fluorescence blue-shift
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