Allan J. Alla
University of Missouri–St. Louis
Publications 5
#1Keith J. StineH-Index: 21
#2Allan J. AllaH-Index: 4
Last.Jay K. BhattaraiH-Index: 6
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1 Citations
#1Allan J. Alla (UMSL: University of Missouri–St. Louis)H-Index: 4
#2Felipe B. d’ Andrea (UMSL: University of Missouri–St. Louis)H-Index: 1
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
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Abstract The surface of nanoporous gold (np-Au) monoliths was modified via a flow method with the lectin Concanavalin A (Con A) to develop a substrate for separation and extraction of glycoproteins. Self-assembled monolayers (SAMs) of α-lipoic acid (LA) on the np-Au monoliths were prepared followed by activation of the terminal carboxyl groups to create amine reactive esters that were utilized in the immobilization of Con A. Thermogravimetric analysis (TGA) was used to determine the surface cove...
18 CitationsSource
#1Abeera Sharma (UMSL: University of Missouri–St. Louis)H-Index: 3
#2Jay K. Bhattarai (UMSL: University of Missouri–St. Louis)H-Index: 6
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
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An electrochemical method for annealing the pore sizes of nanoporous gold (NPG) is reported. The pore sizes of NPG can be increased by electrochemical cycling with the upper potential limit being just at the onset of gold oxide formation. This study has been performed in electrolyte solutions including potassium chloride, sodium nitrate and sodium perchlorate. Scanning electron microscopy images have been used for ligament and pore size analysis. We examine the modifications of NPG due to anneal...
14 CitationsSource
Monolithic column materials offer great advantages as chromatographic media in bioseparations and as solid-supports in biocatalysis. These single-piece porous materials have an interconnected ligament structure that limits the void volume inside the column, thus increasing the efficiency without sacrificing the permeability. The preparation of monolithic materials is easy, reproducible and has available a wide range of chemistries to utilize. Complex, heterogeneous and isobaric glycan structures...
8 CitationsSource
#1Yih Horng Tan (UMSL: University of Missouri–St. Louis)H-Index: 11
#2Kohki Fujikawa (UMSL: University of Missouri–St. Louis)H-Index: 10
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
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Monoliths of nanoporous gold (np-Au) were modified with self-assembled monolayers of octadecanethiol (C18-SH), 8-mercaptooctyl α-D-mannopyranoside (αMan-C8-SH), and 8-mercapto-3,6-dioxaoctanol (HO-PEG2-SH), and the loading was assessed using thermogravimetric analysis (TGA). Modification with mixed SAMs containing αMan-C8-SH (at a 0.20 mole fraction in the SAM forming solution) with either octanethiol or HO-PEG2-SH was also investigated. The np-Au monoliths modified with αMan-C8-SH bind the lect...
13 CitationsSource