Author Archive

Penghao Li

Posted on: August 3rd, 2020 by nhammer

Penghao Li, Assistant Professor of Chemistry & Biochemistry

Assistant Professor of Chemistry & Biochemistry

Office: 480 Coulter Hall
662-915-5337| penghao@olemiss.edu

EDUCATIONAL AND PROFESSIONAL BACKGROUND
B.S., Nankai University, China, 2011
M.A., Boston University, 2014
Ph.D., University of Oregon, 2017
Postdoctoral Fellow, Northwestern University, 2017-2023
Assistant Professor, University of Mississippi, 2023-present

RESEARCH INTERESTS
Synthesis of carbon nanoarchitectures, organic electronics, molecular recognition, self-assembly, organic synthesis, and physical organic chemistry

RESEARCH OVERVIEW
My research group aims to gain precise control over the spatial arrangement of π-conjugated molecules by means of covalent and non-covalent linkages to create functional entities with tailored physical properties. We rely on physical organic and supramolecular principles to guide the design of novel molecular, supramolecular, and macromolecular materials with unique optoelectronic, magnetic, and recognition behaviors for the development of enabling technologies related to energy, sustainability, and human health. Additionally, we seek to implement high-throughput and automated synthetic methods based on sustainable and green protocols. Major thrusts of our research group include (1) precise synthesis of graphene-based carbon nanoarchitectures, (2) molecular recognition of curved polycyclic aromatic hydrocarbons, and (3) discovery of porous materials though hierarchical self-assembly.

GROUP WEBSITE

Chemistry Faculty Connect Students and Industry Leaders through virtual StudyUSA program

Posted on: July 29th, 2020 by nhammer
Zoom Meeting with Delbert Hosemann

PHOTO: Last month, UM students (above) participated in a round-table discussion with Mississippi Lt. Governor Delbert Hosemann (center photo) concerning the state’s response to the Covid-19 pandemic. The students were taking part in numerous online forums with local, state, national, and international leaders and researchers as part of the UM StudyUSA course Chemistry 393: Science and Public Policy. 

OXFORD, Miss. – When Washington, D.C., became a COVID-19 hotspot late this spring, University of Mississippi chemistry professor Randy Wadkins decided to reimagine how he could safely facilitate engaging conversations among students, government leaders and scientists around the world during one of the most significant time periods for both science and public policy – a worldwide pandemic.

Wadkins’ Chem 393: Science and Public Policy class was originally planned as a StudyUSA course for the university’s first summer session. Students were to spend the first few weeks in class in Oxford diving into the issues and then the next week-and-a-half in Washington and Baltimore, hearing from government and health care leaders.

“The goal of the class was to help students learn more about how society and science are intertwined, but little did I know when I proposed the class last fall how even more critical this discussion would become in just a few short months,” Wadkins said.

The class was scheduled to fly to D.C. to visit congressmen and leaders at the White House, and also visit Johns Hopkins Hospital in Baltimore. Due to the outbreak, travel and on-campus classes were cancelled.

“At first, I wasn’t sure if the Zoom class would work with all of our speakers and if we could still have the same quality of discussions that we were planning in our original site visits, but it worked out better than I could have imagined,” he said.

“We would never have had the opportunity to speak with leaders from Vietnam, Australia, Mississippi and D.C. all within two weeks. Since most of the speakers were at home and social distancing, they were available and willing to speak with the students.”

During these exclusive Zoom conferences, Ole Miss students were able to hear from a variety of speakers about their institution’s or government branch’s responses to the COVID-19 crisis.

Speakers included Michael Schmoyer, from the Office of Science and Technology at the White House; Paul Roepe, co-director for infectious disease at Georgetown University Center; U.S. Rep. Steve Cohen, D-Tenn.; Mississippi Lt. Gov. Delbert Hoseman; and Lynn Spruill, Jason Shelton and Robyn Tannehill, mayors of Starkville, Tupelo and Oxford, respectively.

International speakers included Dr. Nguyen Thanh Hung, director of Children’s Hospital in Ho Chi Minh City, Vietnam, and Frances Separovic, president-elect of the Biophysical Society, from Melbourne, Australia.

Faculty members who want to find out more about how to offer similar opportunities to students in an upcoming term are invited to an online information session offered by the Ole Miss StudyUSA program at 2 p.m. Thursday (July 30).

Interested parties can email studyusa@olemiss.edu to get a Zoom link.

During the session, participants will learn more about the numerous services offered by the StudyUSA office for faculty members who are interested including resources for marketing courses, Blackboard and technical support, scholarships to offset costs for students, course development support, flexible course enrollments and more.

Brittany Ferguson, a senior forensic chemistry major from Augusta, Georgia, said she originally signed up for Wadkins’ StudyUSA course because she thought the subject material was a great fit for her major, as well as for her minor in legal studies.

“I wanted to learn more about how to apply what I’m learning in the classroom into my future profession,” Ferguson said.

“I didn’t know what to expect, but when I saw the speaker lineup, I was excited to hear from these great leaders and experts from all over the world. It was a great way to compare COVID-19 stabilization and eradication tactics taken from a variety of viewpoints and regions.”

Ferguson said a speaker who particularly stood out for her was Ashani Weeraratna, chair of biochemistry and molecular biology at Johns Hopkins Bloomberg School of Public Health.

“She talked about what problems might arise at the end of the coronavirus surge,” Ferguson said. “She also talked about her experiences as a female in a STEM career and some of the challenges she had to overcome.”

Some of Ferguson’s friends have since tested positive for coronavirus, and she feels that her participation in the class helped her to make more informed decisions about her own health.

“This was one of my more impactful classes during my time at UM, even though it was different than what I anticipated,” she said. “I feel like I now know more about the science behind this epidemic, and I can use my voice to help others.”

Jody Holland, assistant professor of public policy leadership, planned a course for May intersession that would introduce students to the emerging field of social entrepreneurship and innovation while providing an opportunity for them to learn more from leaders in this field.

His PPL 491: Leadership and Social Innovation class was slated to head to Portland, Oregon, to attend the annual Momentum Summit, a conference for mission-driven CEOs and leaders from around the country. The conference moved to an online format after the pandemic reached the U.S.

“Because the conference moved online, the access that our students had to these major leaders was unprecedented,” Holland said.

“It can be very difficult to have a one-on-one conversation with busy CEOs from national foundations and centers during a large conference, but our students had the opportunity to participate in small online break-out sessions. Leaders from were more than willing to answer their questions and participate in powerful discussions with our students.”

Students were able to build relationships and hear more in-depth discussion of problems and solutions these different organizations were experiencing, Holland said.

“When these CEOs learned that students were a part of the discussions, they really took on mentoring roles,” he said. “They shared with students more about how they working through the process at the beginning of COVID-19.

“Having face-to-face access to speakers at a large conference was a big win for this class.”

This new morphing of the StudyUSA program will bring numerous opportunities for students and faculty members in the coming months, said Laura Antonow, director of college programs in the Division of Outreach and Continuing Education.

“I’m really optimistic about this model,” she said. “I think virtual StudyUSA can be an important component of the program regardless of the COVID situation.”

By Pam Starling

Department Welcomes Prof. Eden Tanner

Posted on: July 27th, 2020 by nhammer

Dr. Eden Tanner will join the Department in July, 2020

Dr. Eden Tanner joined the University of Mississippi Department of Chemistry & Biochemistry on July 1st.  Dr. Tanner received her Bachelor of Advanced Science from The University of New South Wales, Australia in 2012 and he Doctor of Philosophy in Physical and Theoretical Chemistry from the University of Oxford, United Kingdom in 2016 under the direction of Prof. Richard G. Compton.  She then served as a Postdoctoral Research Fellow at Harvard University working with Prof. Samir Mitragotri in the School of Engineering and Applied Science before joining the faculty at UM.  Her group will use a physical chemistry toolkit to solve biomedical and bioengineering problems, particularly using ionic liquids and nanomaterials.

The Tanner lab will seek to solve outstanding bioengineering research questions using a chemistry framework, where an understanding of the molecular interactions within the delivery system allows the development of predictive frameworks and task-specific solvent design.  Ionic liquids, consisting of a bulky, asymmetric cation and an anion, have attracted significant interest in a broad range of applications, including catalysis and energy applications, due to their favorable properties, including non-volatility, recyclability, and their inherent tuneability whereby the anion and cation can be altered to change the physicochemical properties of the material.  By synthesizing the ionic liquids with biocompatible or bioinspired starting materials, they can be employed in biological contexts. Because changing the structure of the ionic components results in changes to their their biologically relevant properties, including interactions with bio-interfaces, biomolecules and pharmaceutical ingredients, they can be tuned to solve a variety of problems.  Nanoparticles have been touted as ideal drug delivery systems due to their ability to deliver drugs in a more effective, safe, and specific way compared to traditional therapeutics, particularly in the context of administering chemotherapy, such as doxorubicin, to treat cancer. However, the vast majority of nanoparticle technologies do not progress clinically as they face a number of currently insurmountable challenges, which result in <5 % arriving to the intended destination.

RESEARCH GROUP WEBSITE

http://edentanner.com

 

BS Chemistry Graduate Named Intern of the Year at UMMC

Posted on: July 8th, 2020 by nhammer

Dr. Peyton Reeves Treutel (B.S. Chemistry, 2015)

Dr. Peyton Reeves Treutel (B.S. Chemistry 2015) was recently recognized at the University of Mississippi Medical Center as the Intern of the Year.  Peyton was an Honors student in the Department of Chemistry & Biochemistry.  Her research involved the Raman Spectroscopic and Computational Study of the Effects of Halogen Bonding on Pyrimidine Containing Systems with Profs. Hammer, Watkins, and Tschumper.

Click here to return to the main Chemistry News page.

 

Congratulations to Faculty With Recent Cover Articles!

Posted on: July 8th, 2020 by nhammer

Congratulations to our Faculty Members who have had their research recently featured on Journal Covers.

Delcamp Group

 

Fortenberry Group

 

Delcamp and Hammer Groups

 

Delcamp, Hammer, and Tschumper Groups

 

Delcamp Group

 

Fortenberry Group

 

Tschumper Group

 

Equity and Inclusion in the Chemical Sciences Requires Actions not Just Words

Posted on: July 2nd, 2020 by nhammer

The following joint Editorial by Melanie S. Sanford (University of Michigan Department of Chemistry) was recently published in ACS Central Science (DOI: 10.1021/acscentsci.0c00784) and The Journal of the American Chemical Society (DOI: 10.1021/jacs.0c06482) and does not necessarily represent the opinion of the Department of Chemistry and Biochemistry.

The chronic effects of institutionalized racism in America have been laid bare in recent weeks by murders caught on film as well as by the disproportionate impact of COVID-19 on Black and LatinX people. Against this backdrop, last week Angewandte Chemie published (and then removed) an article entitled, “‘Organic synthesis—Where now?’ is 30 years old. A reflection on the current state of affairs”. It has been heartening to see the near unanimity of the chemistry community in condemning the archaic views about diversity, inclusion, and mentoring as well as the xenophobia expressed in this paper. This condemnation included a statement by Angewandte that “the values expressed in this piece do not reflect our values of fairness, trustworthiness, and social awareness”, denunciations from chemical societies around the world, the resignation of a large portion of the journal’s international advisory board, and an outpouring of criticism on social media.

However, from my perspective it is hard not to feel that some of the same people who are loudly condemning this piece are (at best) not doing enough to combat these systemic problems and (at worst) actively contributing to them. I encourage everyone in the field who has disavowed the views expressed in this article to ask themselves what they are actively doing to address them. Understand that nearly every one of your colleagues who is also a member of an underrepresented group (women, BIPOC) has been told at some point in their career that they only received a position, fellowship, award, or invitation because of their minority status. Maybe you have even said or thought something like this yourself. Or heard someone else say it without speaking up.

At this stage, words and condemnation are not enough. Actions are needed. If you recognize that a more diverse workforce enhances the field of chemistry, here are some examples of things that you can actually do:

1. Actively promote and advocate for women and underrepresented minority students, faculty, and co-workers. Consider this a priority in the same way that you consider it a priority to advocate for yourself and your close friends. For example:

Attend their talks and posters at scientific meetings and actively engage with their science. Talk to them about their scientific work, ask questions, and discuss their results.

Let them know if you liked their recent paper or presentation. An enthusiastic e-mail or phone call can have a tremendous impact at all career stages.

Nominate their work for coverage in press (e.g., for journal highlights, C&E News, Chemistry World, etc.). Women and researchers from underrepresented minority groups are frequently overlooked in press coverage of scientific work. If you see a great talk or read a great paper, let the press know in the same way that you would for your own work.

Nominate them for awards. Do not just assume that they have already been nominated by someone else. Even if they have, your endorsement and support is still meaningful.

Amplify their voices. When they make a point or ask an insightful question in a meeting, explicitly give them credit and repeat their message.

2. Lead by example. If you truly value diversity, work even harder to make sure that your team reflects your values. If you are a faculty member, use seminar visits and conferences to meet and actively recruit talented and diverse scientists to your group and as future faculty colleagues. Follow up and encourage the people that you meet to join your team or department. Proactively advocate within your department for hiring a diverse cohort of graduate students and faculty recruits.

3. Hiring a diverse team/set of colleagues is not enough. Active support and mentoring are crucial for the success of all scientists! Too often, I have heard other professors say that formal mentoring is a waste of time and that truly talented scientists will be successful without it. Scientists from majority groups take for granted the extensive mentorship that they receive from their colleagues just by being “part of the club”. Formal, informal, and meaningful mentoring for everyone is crucial for leveling the playing field and maximizing the success of all of the scientists in your group and department as well as in the chemistry community at large.

4. Speak up when you see or hear discriminatory words/actions or when you hear implicit biases coming into a discussion. Do not rely on members of underrepresented groups to raise these concerns. If they do, listen, support them and amplify their voices.

5. Educate yourself and your co-workers on the scientific literature that shows how systemic and insidious bias is in science. Some valuable resources on both explicit and implicit bias can be found here: https://advance.umich.edu/stride-readings/. Use these data to refute claims that science is purely a meritocracy, that the playing field is inherently equal for everyone, and that scientists are being hired/promoted solely on their merits.

6. For scientific editors (including those of us at ACS publications like the Journal of the American Chemical Society and ACS Central Science): realize that you often play a critical role in propagating inequities in science. Do not be complacent because your journal was not the one that published this specific piece. Carefully consider your procedures and processes with the following questions in mind:

What papers are being triaged, reviewed, and accepted in your journal? For example, what is the representation of women and underrepresented minority authors and reviewers at each stage? In many cases, these data will reveal that your journal and process is not as objective and unbiased as you think. Be transparent about these data and consider ways to fix any inequities that are revealed.

Who is appealing your editorial decisions, and how are you deciding whether to reconsider their manuscripts? In my own Associate Editor office at JACS, senior white male authors are among the most aggressive in appealing negative decisions. This has the potential to play a significant role in whose papers ultimately receive reconsideration and/or appear in a journal.

What articles are you recommending for press coverage? How do you choose which articles to highlight? Are specific authors (or demographics) disproportionately represented in press coverage from your journal?

This list is meant to provide a starting point for all of us as we work to support and promote the careers of diverse members of our community. I know that there are many other good ideas, and I welcome an open and continuing discussion of these moving forward. Again, actions not just words are required to tackle systemic inequities, and we all can and should be doing more. Now is the time to channel this Global outrage to ensure that the chemical sciences benefit from the contributions, talents, and creativity of all humans.

Views expressed in this editorial are those of the author and not necessarily the views of the ACS.

Confronting Racism in Chemistry Journals

Posted on: June 26th, 2020 by nhammer

Confronting racism in chemistry journals

Despite good intentions, our community has not done enough to provide an environment for Black chemists to thrive.

In this editorial, ACS Publications’ editors-in-chief and deputy editors acknowledge the deleterious impacts that racism and discrimination have had on scientists from underrepresented communities, especially Black chemists.

Learn about their commitment to taking action towards positive change across all ACS Publications journals, and share your own ideas on how we can do better.

We must examine our roles in enabling entrenched inequalities…and take action.

Read the Editorial

Two Chemistry Professors Receive College of Liberal Arts Research Awards

Posted on: June 1st, 2020 by nhammer

 

Jonah Jurss, Assistant Professor of Chemistry & Biochemistry

 

 

This year two Department of Chemistry and Biochemistry faculty members were awarded research awards by the College of Liberal Arts.

The Dr. Mike L. Edmonds New Scholar Research Award is presented annually to untenured, tenure-track professorial rank faculty members in the College of Liberal Arts who are within six years of their initial tenure-track academic appointment and who have demonstrated exemplary performance in research, scholarship, and/or creative achievement.  This year’s recipient for the Natural Sciences and Mathematics is Dr. Jonah Jurss.  Candidates must be untenured when nominated. Depending on the quality of the pool of nominees, up to four awards will be available, with one each chosen from the areas of (1) Natural Sciences and Mathematics, (2) Social Sciences, (3) Humanities, and (4) Fine and Performing Arts. The ideal recipients must have significantly enhanced the scholarly reputation of the College and University through exceptional contributions to their disciplines. Individuals may only receive this award one time, but recipients will retain their eligibility for the College of Liberal Arts Award for Research, Scholarship, and Creative Achievement, which is normally awarded to post-tenure, senior faculty. Each recipient receives a $1,000 cash prize and medal to be presented at the College of Liberal Arts graduation ceremony in May.  Previous Department of Chemistry and Biochemistry recipients include Dr. Davita Watkins (2018) and Dr. Jared Delcamp (2017).

 

 

Amal Dass, Associate Professor of Chemistry & Biochemistry

The Melinda and Ben Yarbrough, M.D. Senior Professor Research Award for Research, Scholarship, and Creative Achievement is presented annually to tenured faculty members in the College in recognition of sustained exemplary performance in research, scholarship, and/or creative achievement at the national/international level while serving as a faculty member at the University of Mississippi. This year’s recipient for the Natural Sciences, Social Sciences, and Mathematics is Dr. Amal Dass.  Depending on the quality of the pool of nominees, two awards will be given, with one each chosen from the areas of (1) Natural Sciences, Social Sciences, and Mathematics and (2) Humanities and Fine and Performing Arts. The ideal recipients will have achieved scholarly recognition and influence well beyond the University of Mississippi community. Recipients of the award are not eligible to receive the award again. Each recipient is recognized with a $2,000 cash prize and a medal, which will be presented at the College of Liberal Arts graduation ceremony in May. Awardees are invited to be members of the platform party during this ceremony. Previous recipients includes Department of Chemistry and Biochemistry faculty member Dr. Nathan Hammer (2018).

 

Senior Biochemistry Major Honored by the Columns Society

Posted on: May 11th, 2020 by nhammer
Jay Fritts

Jay Fritts

University of Mississippi students have been honored as part of their affiliation with the Columns Society to recognize their commitment to serving the institution.

Members of the Columns Society serve as the official hosts and hostesses for the university, and each year, awards are presented to those members who show exceptional faithfulness and service.

“These students have gone above and beyond their roles in serving the University of Mississippi, and I’m delighted to be able to honor them with these awards,” said Natasha Jeter, assistant vice chancellor for wellness and student success.

This year’s recipient of the Christine Wallace Award  is senior biochemistry major Jay Fritts. This award is named in honor of Christine Wallace, former director of university and public events, in acknowledgement of her tireless service to Ole Miss.  The award is given to the member who served the most hours during the year. 

 

Three Chemistry Majors Receive Health Profession Awards

Posted on: May 9th, 2020 by nhammer

Three chemistry majors received health profession awards from the HPAO for the 2019-2020 academic year. 

Summer Jefferson

Community Difference Maker Award Recipient

I am a Biochemistry major with minors in Classics & Society and Health.My hometown is Cumming, GA. I am also a  Stamps Scholar, a Taylor Medalist, a member of the Honors College, a member of Phi Beta Kappa, a member of Alpha Delta Pi, and Who’s Who for 2020. Some of my most meaningful memories at Ole Miss have been engaging with the campus and local communities through Colleges Against Cancer, Rebels for International Health and Education, and Relay for Life. Academically, my professors have pushed and encouraged me to combine my interests and pursue research in food insecurity that I have been able to present at the Southern Rural Sociological Association’s Annual Meeting (2020) and submit for publication in a journal. As a result, this award specifically means so much to me because of my extracurricular and research interests. During my gap year, I’m so excited to be working at the CDC again while I apply to med schools!

Joey Madison Davis

Servant’s Heart Award Recipient

I earned a degree in B.A. Biochemistry with a minor in Psychology. I am from Brookhaven, Mississippi. I went to Mississippi School of the Arts for high school where I studied classical music and dance, and was awarded with Valedictorian, Hall of Fame and the Lindy Callahan Scholar Athlete Award. I am a first generation student, and will be the first doctor in my family as I am to attend the University of Mississippi School of Medicine next fall. At the University of Mississippi, I was selected for Who’s Who, initiated into the Phi Kappa Phi Honor Society and graduated Magna Cum Laude. Through the HPAO, I was a student worker, the president of the HPAO Ambassadors and the PR Chair of the Pre-Med Mentorship Program. I volunteered in the Oxford community through the Leap Frog Enrichment Program, and at both the Baptist Memorial Hospital and MS State Veterans Home.

Andrew Groneck

Medical Service Award Recipient

I am a graduating Biochemistry major from Chesterfield, Missouri. I will be attending the University of Missouri School of Medicine in the fall.