Former Members

Graduate Students

   Derek Rice
   PhD with Honors, 2018


   Allyssa Massie
   PhD with Honors, 2018
   Current Position: Postdoctoral researcher at University of Göttingen


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

   Andrew Burr
   KU Undergraduate Researcher 2015 – 2018
   Current Position: Xenometrics


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
May 2019
Congratulations to Eleanor Stewart-Jones, receiving the Barry M. Goldwater Scholarship!
March 2019
MnIV-Oxo complex of a bis(benzimidazolyl)-containing N5 ligand reveals different reactivity trends for MnIV-oxo than FeIV-oxo species by Melissa Denler, Allyssa Massie, and Eleanor Stewart-Jones In Dalton Transactions
December 2018
Welcome to the group, Samuel Crowell and Priya Singh!
September 2018
MnIII-Peroxo adduct supported by a new tetradentate ligand shows acid-sensitive aldehyde deformylation reactivity by Melissa Denler, Gayan Wijeratne, Derek Rice, and Hannah Colmer In Dalton Transactions
May 2018
Congratulations to Allyssa Massie and Derek Rice, graduating with Ph.D with honors!
March 2018
ACS National meeting in New Orleans by Melissa Denler and Yuri Lee.
February 2018
Spectroscopic and Structural Characterization of Mn(III)-Alkylperoxo Complexes Supported by Pentadentate Amide-Containing Ligands by Joshua Parham, Gayan Wijeratne, and Derek Rice In Inorganic Chemistry
December 2017
Mn K-edge X-ray absorption studies of mononuclear Mn(III)-hydroxo complexes by Derek Rice and Gayan Wijeratne in Journal of Biological Inorganic Chemistry
Welcome to the group, Jaycee Mayfield and Elizabeth Grotemeyer!
October 2017 
Manganese-oxygen Intermediates in O-O Bond Activation and Hydrogen-Atom Transfer Reactions by Derek Rice and Allyssa Massie in Accounts of Chemical Research
April 2017
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
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