Preparation and Characterization of L-Tryptophan Molecularly Imprinted Photonic Hydrogels

作者：Yang Zhaokun; Zhang Xiaodong; Shi Dongjian; Chen Mingqing; Liu Shirong^*

来源：Chemical Journal of Chinese Universities, 2016, 37(1): 37-42.

DOI：10.7503/cjcu20150434

• "Sandwich" structure
• Inverse opal
• Photonic crystal
• Molecularly imprinted
• L-Tryptophan

Free-standing molecularly imprinted photonic hydrogels ( MIPHs) that peeled from the supporters were prepared using the colloidal crystal template method assisted by "sandwich structure". MIPHs were fabricated by UV polymerization with L-Tryptophan(L-Trp) as template molecule, acrylamide ( AM) as functional monomer, N,N'-methylene bisacrylamide ( BIS) as crosslinking agent. MIPHs were characterized by highly ordered three-dimensional interconnected macroporous structure. MIPHs showed rapid response property when immersed into L-Trp buffers. The Bragg diffraction peak of MIPHs redshifted 83 nm as the concentration of L-Trp increased from 10(-10) mol/L to 10(-5) mol/L, and the color changes could be visible by the naked eyes. Moreover, MIPHs showed only a slight shift in the Bragg diffraction peak in solutions of L-Tyr or L-Phe, which indicated that MIPHs possessed a certain selectivity. High selectivety, rapid response and signal self-reporting of MIPHs might provide great convenience for the application in the real-world environments.

• 出版日期2016-1-10
• 单位江南大学