Match!
Jay K. Bhattarai
University of Missouri–St. Louis
12Publications
6H-index
81Citations
Publications 12
Newest
#1Jay K. BhattaraiH-Index: 6
#2Dharmendra NeupaneH-Index: 1
Last.Keith J. StineH-Index: 21
view all 6 authors...
Nanoporous gold (np-Au), because of its high surface area-to-volume ratio, excellent conductivity, chemical inertness, physical stability, biocompatibility, easily tunable pores, and plasmonic properties, has attracted much interested in the field of nanotechnology. It has promising applications in the fields of catalysis, bio/chemical sensing, drug delivery, biomolecules separation and purification, fuel cell development, surface-chemistry-driven actuation, and supercapacitor design. Many chemi...
9 CitationsSource
#1Jay K. BhattaraiH-Index: 6
#2Dharmendra NeupaneH-Index: 1
Last.Keith J. StineH-Index: 21
view all 6 authors...
Source
#1Jay K. BhattaraiH-Index: 6
#2Dharmendra NeupaneH-Index: 1
Last.Keith J. StineH-Index: 21
view all 5 authors...
1 CitationsSource
#1Keith J. StineH-Index: 21
#2Jay K. BhattaraiH-Index: 6
Last.Alexei V. DemchenkoH-Index: 3
view all 6 authors...
#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
view all 6 authors...
Abstract Electrochemical impedance spectroscopy (EIS) is used to compare the apparent electron transfer rate constant ( k app ) for a series of alkanethiol and of carbohydrate-terminated alkanethiol self-assembled monolayers (SAMs) on both flat gold and on nanoporous gold (np-Au). Using the surface area for np-Au determined by oxide stripping, the values of k app for the alkanethiol modified np-Au are initially over two orders of magnitude smaller than the values found on flat Au. This result pr...
3 CitationsSource
#1Jay K. Bhattarai (UMSL: University of Missouri–St. Louis)H-Index: 6
#2Yih Horng Tan (UMSL: University of Missouri–St. Louis)H-Index: 11
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
view all 6 authors...
Abstract The interactions of the lectin Concanavalin A (Con A) with self-assembled monolayers (SAMs) of thiolated mono-, di-, and tri-mannosides were studied on the surface of gold wires using electrochemical impedance spectroscopy (EIS). The SAMs of mannosides were prepared either pure or along with thiolated triethylene glycol (TEG) at different molar ratios (1:1, 1:2, 1:4, 1:9, and 1:19) to better understand and optimize the interaction conditions. The charge-transfer resistance of the [Fe(CN...
6 CitationsSource
#1Keith J. StineH-Index: 21
#2Allan J. AllaH-Index: 4
Last.Jay K. BhattaraiH-Index: 6
view all 3 authors...
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
view all 7 authors...
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
#1Jay K. Bhattarai (UMSL: University of Missouri–St. Louis)H-Index: 6
#2Abeera Sharma (UMSL: University of Missouri–St. Louis)H-Index: 3
Last.Keith J. Stine (UMSL: University of Missouri–St. Louis)H-Index: 21
view all 5 authors...
Abstract Localized surface plasmon resonance (LSPR) spectroscopy is a label-free chemical and biological molecular sensing technique whose sensitivity depends upon development of nanostructured transducers. Herein, we report an electrodeposition method for fabricating nanostructured gold films (NGFs) that can be used as transducers in LSPR spectroscopy. The NGF was prepared by electrodepositing gold from potassium dicyanoaurate solution onto a flat gold surface using two sequential controlled po...
17 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
view all 5 authors...
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
12