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Reference type: Conference Proceeding
Authors: Ini S, Defreese JL, Parra-Vasquez N, Katz A
Publication date: 2002
Article title: On route to the chiral imprinting of bulk silica.
Page numbers: 41-47
DOI: 10.1557/PROC-723-M2.3 Alternative URL: http://www.cchem.berkeley.edu/katzgrp/papers/MRS-1.pdf

Editors: Shea KJ, Yan M, Roberts MJ, Cremer PS, Crooks RM, Sailor MJ
Publisher: Materials Research Society
Volume number: 723
Conference information: Molecularly Imprinted Materials-Sensors And Other Devices

Abstract: Shape-selective pores have been synthesized in bulk silica via imprinting. The synthetic approach relies on a sol-gel process to immobilize the imprint within a hybrid organic/inorganic material. Cleavage of the carbamate linkage from this material generates a primary amine within a microporous binding site. Characterization studies, including potentiometric titration and solid-state nuclear magnetic resonance spectroscopy, indicate that most imprinted amine sites are accessible during binding with small molecule probes. However, larger probes are unable to adsorb to the same material, indicating significant shape-selectivity in binding. Additionally, an investigation of framework pore size effects in a catalytic system shows that shape-selectivity can be solely a result of the imprinted active site and not the framework structure


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