Welcome to the Walter Research Group in the Department of Chemistry at the University of North Carolina at Charlotte. We are interested in the synthesis and development of new organic materials for molecular electronics. Our work involves applications related to photocatalysis, materials for photovoltaic or solar fuel applications. Our work spans materials research, organic synthesis, hybrid organic/inorganic systems, and nanoscience. We are particularly interested in enhancing the light harvesting and energy (exciton) transfer mechanisms found in porphyrin thin films and organic electrochromic materials. We are also very active with outreach programs including a new Polymer Seminconductor Outreach Kit.
News Update: 7/25/18
Great job summer crew!!! Shannon Patberg (NSF-REU student), Nick Sayresmith (Nanoscale Science PhD student), Joshua Sailer (Charlotte Research Scholar), and Sashank Sabineni (High School Student) - left to right. Joshua won second place at the summer research conference - great work this summer to everyone!!!!
News Update: 2/12/18
Congrats to Dan, Eli (Micah), and Li for a great job finishing up this publication on using a conductive polymer glue to make electrical contacts to silicon! Nice work - the paper is now published online in the journal Polymer International.
News Update: 11/2/17
Our paper on the development of a new polymer semiconductor education kit has been published! This appears in a special issue on polymer education in the Journal of Chemical Education, congrats (Jessie and Dawn)! The manuscript includes 100 pages of supporting information and an Android app to help instructors implement the 3 in 1 plastics electronics, polymer education curricula. The education kit has been developed for advanced high school school and undergraduate laboratory instruction. Great job team!
News Update: 8/19/17
Alexis Woodward (Charlotte Research Scholars) and Joshua Chapeda (NSF - REU) rocked it at the Summer Research Symposium. They were expanding our work on thiazolothiazoles this past Summer 2017 - nice work Alexis and Joshua!
News Update: 5/13/17
Great day for the Walter Research Group......and so proud of my first PhD student Dawn Marin - graduating today with her Doctoral degree! Great Job Dawn! Dawn worked on porphyrins and the photochemistry of porphyrin single crystals.
News Update: 5/9/17
Congrats to Alexis Woodward and team on the electrochemical and fluorescence properties of thiazolothiazole viologens which has just been accepted in the Journal of the American Chemical Society - great work!
News Update: 3/31/17
A super big congrats to Nemah-Allah Saleh! Nemah won a Barry Goldwater Scholarship! Nemah has been working on the photoconductivity of porphyrin single crystals in our lab. Here's an article about her award.
News Update: 10/29/16
Congrats to Meesha and Praveen for their SPIE proceedings publication, "Structural Modifications to Enhance the Exciton Diffusion in Bilayer Porphyrin Fullerene Thin Films" which has just been accepted. Heating and molecular orientation controls exciton diffusion in porphyrin thin films!
News Update: 7/29/16
What a great summer 2016 group! Praveen - NC State, Keming - PhD student - UNCC, Nemah - BS Chem student UNCC - NSF-REU, Alexis - BS Chem student UNCC, me - nice shirt!, Brandon - ACS Project Seed, David - HS student - Army REAP, Madison - HS student - Army REAP, Dawn - PhD student UNCC, Meesha - PhD student UNCC..........great job everyone!!!
News Update: 6/23/16
Cool new paper just published by our group entitled "Spatially Resolved Micro-Photoluminescence Imaging of Porphyrin Single Crystals," in Chemical Physics Letters. This was a team effort by Dawn, Meesha, and Jose and shows the fluorescence dynamics of some very nice porphyrin single crystals. Congrats everyone!
News Update: 6/22/16
Welcome to our first co-hort of students through the Army Educational Outreach program - David Marin and Madison Kendrick. We're excited that you'll be joining us this summer to work on solar energy conversion!!!
News Update: 5/8/16
A big congrats to Meesha, Jenn, and Angy for their publication, "Enhancing Exciton Diffusion in Porphyrin Thin Films Using Peripheral Carboalkoxy Groups to Influence Molecular Assembly" which has just been accepted to the Journal of Materials Chemistry. We are reporting long exciton diffusion lengths (LD) in some new alkylated porphyrin thin films, and the affects of molecular orientation on the exciton diffusivity.
News Update: 4/29/16
Another successful year for the UNC Charlotte Science and Technology Expo! (Expo Facebook Page) Walter group members helped students of all ages make lots of blackberry juice dye-sensitized nanoparticle solar cells. This is the 5th year that the WRG has participated in the festival and it was by far the largest crowd we ever had. The UNC Charlotte Science and Tech Expo is part of the NC State Science festival that is held every spring in the state of North Carolina. More information about our outreach efforts including a new polymer semiconductor outreach education kit for students and teachers can be found here: Thanks WRG!!!
News Update: 10/29/15
Dr. Michael Walter and Ms. Jessie Enlow (Cox Mill High School teacher) led a polymer semiconductor workshop for 13 local high school science teachers in the Burson building on Monday, October 26. The goal of the workshop was to integrate nanoscale material science experiments into prescribed high school curricula. The program - funded by the Camille and Henry Dreyfus Foundation - was designed around a new polymer semiconductor kit that allows teachers to teach required fundamental science concepts, while at the same time introducing students to the new fields of conjugated polymers and material science. Nanoscale Science Ph.D. student Dawn Marin assisted with the workshops, which involved training the teachers about three modules: a polymer solar cell, an organic light emitting diode, and a conductive polymer nano fiber experiment. Teachers who completed the workshop received a kit and curriculum with enough materials to run the activities many times with their students. The program will continue to develop with online resources for involved teachers. A new cohort of teachers will participate in a similar workshop in Spring 2016.
News Update: 10/20/15
Congrats to Dawn Marin for her work on efficient intersystem crossing in singly halogenated porphyrin systems (published in Phys. Chem. Chem. Phys.). The quantum yields were measured using novel delayed fluorescence. Very cool work!
News Update: 10/7/15
A great big "hurray!" for Jessie Enlow and Dawn Marin whose paper "Developing a Polymer Semiconductor Education Kit and Curriculum for High School Science Classrooms" was published and featured on the cover of September's Macromolecular Symposia. Great Job! This work coincides with a new outreach program funded by the Dreyfus Foundation that is starting up in Charlotte, NC with our first science teacher workshop to be held at UNC Charlotte on October 26th, 2015.
News Update: 8/27/15
Registration is now open for the 3rd annual UNC Charlotte / NC State Joint Photochemistry Symposium held this year at UNC Charlotte. The one day symposium will encompass topics in all areas of photochemistry, from natural to artificial systems. Join us for a great afternoon of photochemical science research talks and posters!!
News Update: 8/1/15
Congrats to Eli Bostian, an NSF-REU nanoSURE summer student who won best poster in the Engineering, Nanomaterials and Computing category at the UNC Charlotte Annual Summer Research Symposium.
Read more about Eli's work here. Great work Eli!!!
Read more about Eli's work here. Great work Eli!!!
News Update: 5/1/15
Congrats NanoSolar - Team UNC Charlotte! We earned an Honorable Mention at the EPA - P3 competition. EPA-P3
Read more about the design competition in the UNC Charlotte Magazine
Read more about the design competition in the UNC Charlotte Magazine
News Update: 4/6/15
A big congrats to Jennifer Kassel who was just awarded an NSF-GRF for Fall 2015. Jen has been working in my lab since Summer 2013 on several projects. Congrats Jen!!!!
News Update: 3/24/15
An exciting new review on porphyrin materials has been recently published from the WRG in the journal Polymer International. The paper covers the latest research that utilizes porphyrin polymers and organic frameworks.
News Update: 12/3/15
Congrats to Angy, Nick, Reynolds, Graham, and Jen on their paper accepted for publication in the Journal of Materials Chemistry on their study of the exciton diffusion properties in thin porphyrin films!
News Update: 11/7/14
Congrats to the Walter Research Group for obtaining funding from The Camille and Henry Dreyfus Foundation to support outreach and research!
News Update: 10/15/14
Congrats to the Walter Research Group for obtaining funding from the Environmental Protection Agency for a new project "Sustainable Responsivity" which is a collaboration with Prof. Mona Azarbayjani in the College of Architecture at UNC Charlotte. The design team composed of chemistry, physics, and architecture students will compete against other schools this March in Washington D.C. for the top P3 prize.
News Update: 9/13/14
Welcome new WRG member Meesha Kaushal (Nanoscale Science Ph.D. Student)! Meesha has recieved an M.S. in plastics engineering from UMass Lowell and a B.S./M.S. in chemistry from Panjab University in India.
News Update: 6/1/14
Welcome new WRG member Dan Cohen (Nanoscale Science Ph.D. Student)! Dan recieved a S.B. in Chemistry from MIT and has been working on organic semiconductor photocatalyst materials.
News Update: 4/18/14
The 2014 UNC Charlotte Science and Tech Expo was a HUGE success! We had over 80 exhibits/hands-on activities and nearly 5000 visitors/students of all ages attend the event. Thanks to the volunteers from the WRG for making blackberry juice solar cells and demonstrating artificial photosynthesis - solar water splitting!
News Update: 9/24/13
Welcome graduate students Li Nguyen and Reynolds Ivins to the group!
News Update: 7/12/13: Summer 2013 Research Group
News Update: 6/30/13
Welcome ACS SEED student Randy Rodrigurez, NSF-REU nanoSURE student Sonya Payerpaj, and Charlotte Research Scholar (CRS) Jennifer Kassel to the Walter research group for the summer. We're happy to have you join us!!!
News Update: 6/7/13
Congrats to Graham Collier who just successfully defended his M.S. thesis. (The first graduate student in the WRG to do so!) Graham has been working on new porphyrin light absorbers for bulk heterojunction solar cells. His next stop, U. Tennessee to join the Ph.D. program in chemistry. Good luck Grambo!!
News Update: 5/31/13
Welcome new WRG members Li Nguyen (Chemistry M.S. student) and Dawn Marin (Nanoscale Science Ph.D. Student).
News Update: 4/22/13
The UNC Charlotte Science and Technology Expo was a huge hit! Thanks to all WRG members who helped make it a success. We made lots and lots and lots of blackberry juice dye-sensitized TiO2 solar cells and helped to promote our outreach work with "Juice from Juice."
News Update: 12/6/12
Dr. Angy L. Ortiz has joined the Walter Research Group. Dr. Ortiz received her Ph.D. studying the electrochemistry of new fullerene derivatives at Clemson University. Welcome to the Walter Research Group Dr. Ortiz!
News Update: 10/18/12 - Charlotte Teachers Institute (Sustainability in Charlotte and Beyond), students showing off the "Juice from Juice" high school solar cell outreach kit (dye-sensitized solar cells).
News Update: 8/15/12
Congratulations to graduate student Graham Collier who was a finalist in the Thomas D. Walsh Graduate Research Fellowship in the chemistry department at UNC - Charlotte. This is a very prestigious program in the department, so congrats to you Graham!
News Update: 6/29/12
The summer research group for 2012 is busy with several new projects. Emily Lam, an ACS Project Seed high school student has joined the lab and is working on porphyrin based organic photovoltaic devices. Welcome Emily!
News Update: 5/20/12
Congrats to Reynolds Ivins for receiving the Charlotte Research Scholars summer undergraduate research fellowship for the summer 2o12! Reynolds will be working on new porphyrin dyes for organic polymer solar cells applications.
News Update: 3/19/12
North Carolina Science Festival is Coming to UNC Charlotte this April 29th! We are hosting a Science and Technology Expo from 11-2 pm followed by a performance from the hosts of "MythBusters" at 2:30 pm in Halton Arena. The Walter group will be on hand to show some cool science demo's and making blackberry solar cells!
News Update: 3/1/12
Congrats to Graham Collier for successfully completing his first mini-seminar regarding new materials for organic solar cell devices and presenting his synthetic efforts at the UNC Charlotte Graduate Student Research Fair in Atkins Library. Nice work!
News Update: 11/11/11
The lab is starting up! Our gloveboxes have been installed, and we are starting to synthesize and test new organic semiconductors. We will study their optical and electronic properties using organic polymer solar cell and photoelectrochemical configurations to learn about their ability to convert solar photons into usable, clean energy! Here's more picts of the Walter Lab.