ZHAN Xia-fei, TANG Jian-she, WU Jun. Synthesis and Factors of A Novel Carbon Quantum Dot Based on Schiff's Base Reaction[J]. Chinese Journal of Luminescence, 2016,37(10): 1195-1202
ZHAN Xia-fei, TANG Jian-she, WU Jun. Synthesis and Factors of A Novel Carbon Quantum Dot Based on Schiff's Base Reaction[J]. Chinese Journal of Luminescence, 2016,37(10): 1195-1202 DOI: 10.3788/fgxb20163710.1195.
Synthesis and Factors of A Novel Carbon Quantum Dot Based on Schiff's Base Reaction
A novel carbon quantum dot was synthesized from (3-aminopropyl)-trimethoxysilane (APTMS) and glutaraldehyde (GA) by facile hydrothermal method based on Schiff's base reaction. The carbon quantum dot was spherical with a diameter of about 2-7 nm
and the excitation wavelength and maximum emission peak were 350 and 400 nm
respectively. The fluorescence quantum yield was up to 13.6%. The experiment results show that the optimal prepared condition of carbon quantum dots is APTMS and GA molar ratio of 1:2
heated at 180 ℃ for 8 h. The fluorescence intensity of carbon quantum dots is the maximum in pH 6.0 phosphate buffer solution. In addition
the fluorescence intensity decreases with the increase of the measuring temperature from 273 to 303 K.
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