Former Members

Graduate Students

Hannah Colmer photoHannah Colmer
PhD with Honors, 2016
Current Position: Visiting Professor at University of St. Mary


Gayan Wijeratne photoGayan Wijeratne
PhD with Honors, 2015
Current Position: Postdoctoral researcher at Johns Hopkins University


Domenick LetoDomenick Leto
PhD with Honors, 2014
Current Position: Research Scientist at Southwest Research Institute


Amanda GlassAmanda Glass
PhD, 2012
Current Position: Assistant Professor at Johnson County Community College


James Mills James Mills
MS, 2012
Current Position: Graduate Student, University of Kansas School of Law


Robert GeigerRobert Geiger
PhD with Honors, 2011
Current Position: R&D Manager at Compass Minerals


Kevin Bane Graduate Student (2010 – 2011)

Post-doctoral Associates

Manoj Kumar PhotoDr. Manoj Kumar
Postdoctoral Researcher
Ph.D. 2012, University of Louisville
M.S. 2006, Panjab University, Chandigarh, India


Swarup Chattopadhyay
Current Position: Department of Chemistry, Kalyani University, West Bengal, India

KU Undergraduates

Nicci BowmanPhotoNicci Bowman
KU Undergraduate Researcher 2014 – 2015
Current Position: Tnemec


Anthony HowcroftAnthony Howcroft
KU Undergraduate Researcher 2014 – 2015
Current Position: Cerner


Ashley Ramirez
KU Undergraduate Researcher 2010 – 2011
Current Position: Exxon Mobile

Elizabeth Kretzmeier
KU Undergraduate Researcher 2009 – 2010
Current Position: MBA Program, University of Kansas School of Business

Alex Warn
KU Undergraduate Researcher 2009

Domenick Leto
KU Undergraduate Researcher 2008
Current Position: Research Scientist at Southwest Research Institute

Luke Rosebraugh
KU Undergraduate Researcher 2007 – 2008

REU Students (Supported by NSF-REU Program)

Luísa Thiara PhotoLuísa Thiara
REU Student 2015 (from Federal University of Bahia, Salvador, Brazil)
Current position: Student at Federal University of Bahia


Briana Corzine
REU Student 2013 (from Trevecca Nazarene University, Nashville, TN)
Current position: Graduate Student at Vanderbilt University

Rena Ingram
REU Student 2012 (from Fort Valley State University, Fort Valley, GA)
Current Position: Senior, Fort Valley State University

Joshua Transmeier
REU Student 2011 (from MidAmerica Nazarene University, Olathe, KS)

Steven Chabolla
REU Student 2010 (from California State University, Fresno, Fresno, CA)
Current Position: Graduate Student at University of California San Diego

Kevin Bane
REU Student 2009 (from Dana College, Blair, NE)

Chris Diebold
REU Student 2008 (from Washington and Lee University, Lexington, VA)

Jackson Group News
April 2017
Poster presentations at the 253rd ACS National meeting in San Francisco by Derek Rice, Allyssa Massie, Melissa Denler, Joshua Parham, and Aruna Munasinghe.
March 2017
Equatorial Ligand Perturbations Influence the Reactivity of Manganese(IV)-Oxo Complexes by Allyssa Massie, Melissa Denler, et. al in Angewandte Chemi International Edition
December 2016
Welcome to the group, Yuri Lee!
November 2016
July 2016
Steric and Electronic Influence on Proton-Coupled Electron-Transfer Reactivity of a Mononuclear Mn(III)-Hydroxo Complex by Derek Rice, Gayan Wijeratne, Andrew Burr, and Josh Parham in Inorganic Chemistry
April 2016
Congratulations to Hannah Colmer, graduating with Ph.D with honors!
December 2015
Welcome to the group, Aruna Munasinghe!
June 2015
Welcome to the group, Melissa Denler!
June 2015
Congratulations to Gayan Wijeratne, graduating with Ph.D. with honors!
April 2015
Presentation by Gayan Wijeratne, "Dioxygen activation under ambient conditions using bio-inspired manganese(II) complexes to generate mid-valent oxidants for catalytic O–H bond oxidations," and poster presentation by Hannah Colmer, "Formation, Characterization, and O-O Bond Activation of a Bio-inspired Peroxomanganese(III) Complex," at 249th ACS National Meeting and Exposition, Denver, CO.
January 2015
"O–H bond oxidation by a monomeric Mn(III)–OMe complex" by Gayan Wijeratne published in Dalton Transactions
December 2014
Welcome to the group, Josh Parham!
November 2014
October 2014
July 2014

"Saturation Kinetics in Phenolic O–H Bond Oxidation by a Mononuclear Mn(III)–OH Complex Derived from Dioxygen" by Gayan Wijeratne and Briana Corzine published in Inorganic Chemistry

June 2014
June 2014
Domenick Leto graduates with Ph.D with honors
May 2014
January 2014
Poster presentation by Dr. Timothy Jackson at the Metals in Biology Gordon Research Conference and by Domenick Leto, Gayan Wijeratne, and Hannah Colmer at the Bioinorganic Gordon Research Seminar in Ventura, CA
November 2013
"Peroxomanganese complexes as an aid to understanding redox-active manganese enzymes" by Domenick Leto published in the Journal of Biological Inorganic Chemistry
July 2013
June 2013
Poster presentation by Hannah Colmer at the 2013 Regional Career Development Conference at the Chemistry-Biology Interface, Urbana-Champaign, IL, "Determining the Role of High-Valent Manganese Oxo and Hydroxo Intermediates in Biomimetic Systems"
April 2013
Dr. Timothy Jackson receives promotion to associate professor with tenure
April 2013
April 2013
April 2013
Presentation by Dr. Timothy Jackson at the 245th ACS National Meeting & Exposition, New Orleans, LA, "Spectroscopic and computational insights into manganese-dependent enzymes from studies of biomimetic manganese complexes"
November 2012
One of 34 U.S. public institutions in the prestigious Association of American Universities
44 nationally ranked graduate programs.
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Top 50 nationwide for size of library collection.
23rd nationwide for service to veterans —"Best for Vets," Military Times