Jorge Colón

Universidad de Puerto Rico, Rio Piedras, Chemistry, Faculty Member

Followers

309

Following

335

Co-authors

Public Views

Professor of Inorganic Chemistry at the University of Puerto Rico, Río Piedras Campus. I'm a Physical Inorganic Chemist and my research interests are solar energy and solar fuels, artificial photosynthesis, electrocatalysis, biosensors, and drug delivery using layered inorganic nanoparticles. I'm PI of the NSF-PREM Center for Interfacial Electrochemistry of Energy Materials (CIE2M http://prem-cie2m.upr.edu). I'm also interested in outreach and have been giving workshops on solar energy through the Caribbean Brigade of the Solar Army.
Phone: +1 787-402-2015
Address: Department of Chemistry
University of Puerto Rico
17 Ave. Universidad STE 1701
San Juan, Puerto Rico 00925-2537

less

Abdullah M. Asiri

King AbdulAziz University (KAU) Jeddah, Saudi Arabia

senthil kumar karuppannan

National University of Singapore

Spiros H Anastasiadis

University of Crete

Nageh K. Allam

Massachusetts Institute of Technology (MIT)

Kledi Xhaxhiu

Universiteti i Tiranes

Eduardo Torres

(Benemérita) Universidad Autónoma de Puebla

naveen noronha

Visvesvaraya Technological University

Angel Berenguer

University of Alicante / Universidad de Alicante

Irina Kolesnik

Moscow State University

Roberto Cortes

University of the Basque Country, Euskal Herriko Unibertsitatea

InterestsView All (14)

Uploads

Papers by Jorge Colón

Tailored Organic-Inorganic Materials

Wiley eBooks, Feb 27, 2015

ABSTRACT This book explores the limitless ability to design new materials by layering clay materi... more ABSTRACT This book explores the limitless ability to design new materials by layering clay materials within organic compounds. Assembly, properties, characterization, and current and potential applications are offered to inspire the development of novel materials. Coincides with the government&#39;s Materials Genome Initiative, to inspire the development of green, sustainable, robust materials that lead to efficient use of limited resources Contains a thorough introductory and chemical foundation before delving into techniques, characterization, and properties of these materials Applications in biocatalysis, drug delivery, and energy storage and recovery are discussed Presents a case for an often overlooked hybrid material: organic-clay materials

Layered Inorganic Materials as Redox Agents: Ferrocenium-Intercalated Zirconium Phosphate

by Mitkel B Santiago and Jorge Colón

Langmuir, 2007

The direct intercalation reaction of ferrocene (bis(eta5-cyclopentadienyl)iron(II), Fc) with a hi... more The direct intercalation reaction of ferrocene (bis(eta5-cyclopentadienyl)iron(II), Fc) with a highly hydrated layered zirconium phosphate (ZrP) resulted in the formation of the ferrocenium ion (Fc+) within the ZrP material. The Fc+-intercalated ZrP material has an interlayer distance of 10.7 A. The intercalated material was used as an electron acceptor for the oxidation of both ferro-cytochrome c and the excited state of tris(2,2&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;-bipyridine)ruthenium(II) ([Ru(bpy)3]2+). Upon contact of the material with a 1.5 x 10(-5) M solution of ferro-cytochrome c, the UV-vis absorption spectrum shows the successful formation of ferri-cytochrome c. Luminescence spectroscopy shows that the Fc+-intercalated ZrP material quenches the luminescence of [Ru(bpy)3]2+. The excited-state quenching mechanism of [Ru(bpy)3]2+* by Fc+-intercalated ZrP follows a dynamic plus sphere of action model. The second-order dynamic quenching rate constant kq is 2.2 x 10(8) M(-1) s(-1).

Effect of Enzyme and Cofactor Immobilization on the Response of Ethanol Oxidation in Zirconium Phosphate Modified Biosensors

by Mitkel B Santiago and Jorge Colón

Electroanalysis, 2010

Two different self-contained ethanol amperometric biosensors incorporating layered [Ru(phend) 2 b... more Two different self-contained ethanol amperometric biosensors incorporating layered [Ru(phend) 2 bpy] 2þ-intercalated zirconium phosphate (ZrP) as the mediator as well as yeast-alcohol dehydrogenase (y-ADH) and its cofactor nicotinamide adenine dinucleotide (NAD þ) were constructed to improve upon a design previously reported where only this mediator was immobilized in the surface of a modified electrode. In the first biosensor, a [Ru(phend) 2 bpy] 2þintercalated ZrP modified carbon paste electrode (CPE) was improved by immobilizing in its surface both y-ADH and NAD þ using quaternized Nafion membrane. In the second biosensor, a glassy carbon electrode was modified with [Ru(phend) 2 bpy] 2þ-intercalated ZrP, y-ADH, and NAD þ using Nafion as the holding matrix. Calibration plots for ethanol sensing were constructed in the presence and absence of ZrP. In the absence of ZrP in the surface of the modified glassy carbon electrode, leaching of ADH was observed as detected by UV-vis spectrophotometry. Ethanol sensing was also tested in the presence and absence of ascorbate to measure the selectivity of the sensor for ethanol. These two ethanol biosensors were compared to a previously reported one where the y-ADH and the NAD þ were in solution, not immobilized.

Jorge Colón

Uploads

Papers by Jorge Colón

Log In