Journal
CHINESE JOURNAL OF CHEMICAL PHYSICS
Volume 23, Issue 2, Pages 195-200Publisher
CHINESE PHYSICAL SOC
DOI: 10.1088/1674-0068/23/02/195-200
Keywords
Quantum dots; Molecularly imprinted polymer; Bovine serum albumin; Langmuir isotherm
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Funding
- National Natural Science Foundation of China [20405013]
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A new bovine serum albumin (BSA) surface imprinting method was developed by the incorporation of quantum dots (QDs) into molecularly imprinted polymers (MUP), which can offer shape selectivity. Preparation and adsorption conditions were optimized. Physical appearance of the QDs and QDs-MIP particles was illustrated by scanning electron microscope images. Photoluminescence emission of CdS was quenched when rebinding of the template. The quenching of photoluminescence emissions is presumably due to the fluorescence resonance energy transfer between quantum dots and BSA template molecules. The adsorption is compiled with Langmuir isotherm, and chemical adsorption is the rate-controlling step. The maximum adsorption capacity could reach 226.0 mg/g, which is 142.4 mg/g larger than that of undoped BSA MIP. This study demonstrates the validity of QDs coupled with MIP technology for analyzing BSA.
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