Research Archive
![](https://chem.unc.edu/wp-content/uploads/2023/07/Brown-Carbon-from-Photo-Oxidation-of-Glyoxal-and-SO2-in-Aqueous-Aerosol.png)
Here, we explore the effects of sunlight and oxidants on aqueous solutions of glyoxal and S(IV), and on aqueous aerosol exposed to glyoxal and SO2.
![](https://chem.unc.edu/wp-content/uploads/2023/07/RAFT-step-growth-polymerization-of-bis-acrylamides-and-their-facile-degradation.png)
Demonstrated is the successful A2 + B2 RAFT step-growth polymerization of bis-acrylamides using a bifunctional trithiocarbonate chain transfer agent as the comonomer.
![](https://chem.unc.edu/wp-content/uploads/2023/07/Glass-Transition-Temperatures-of-Organic-Mixtures-from-Isoprene-Epoxydiol-Derived-Secondary-Organic-Aerosol.png)
Using broadband dielectric spectroscopy, we measured the Tg of organic mixtures containing isoprene epoxydiol (IEPOX)-derived SOA components, including 2-methyltetrols (2-MT), 2-methyltetrol-sulfate (2-MTS), and 3-methyltetrol-sulfate (3-MTS).
![](https://chem.unc.edu/wp-content/uploads/2023/06/The-fate-of-organic-peroxides-indoors-1.png)
Here, the effect of relative humidity (RH) on the deposition velocity (vd) and reaction probability (γ) of a model ROOH to naturally soiled indoor glass surfaces was investigated; specifically, by using authentic isoprene hydroxy hydroperoxide (1,2-ISOPOOH) as the model compound.
![](https://chem.unc.edu/wp-content/uploads/2023/06/Modifying-Polycaprolactone-Degradation-through-C–H-Functionalization.png)
We report the C–H xanthylation of poly(caprolactone), a biodegradable polyester, which results in changes in materials properties even at small incorporations.
![](https://chem.unc.edu/wp-content/uploads/2023/06/Tyrosinase-Catalyzed-Peptide-Macrocyclization-for-mRNA-Display.png)
Here we show that peptides containing tyrosine and cysteine are rapidly cyclized upon tyrosinase treatment.
![](https://chem.unc.edu/wp-content/uploads/2023/06/Enantio-and-Diastereoselective-Mannich-Reactions-of-s-Dicarbonyls-by-Second-Stage-Diastereoconvergent-Crystallization.png)
Herein, we disclose a simple catalytic crystallization-driven enantio- and diastereoselective Mannich reaction for the synthesis of stereodefined α-monosubstituted-ß-keto esters, dissymmetric ß-diesters, dissymmetric ß-diketones, and ß-keto amides that productively leverages product epimerization in solution.
![](https://chem.unc.edu/wp-content/uploads/2023/06/Spin-orbit-coupling-induced-band-splitting-in-two-dimensional-hybrid-organic-inorganic-perovskites.png)
We investigate how the spin-orbit-coupling-induced lifting of the spin degeneracy depends indirectly on constituting organic motifs in two-dimensional hybrid organic-inorganic perovskites.
![](https://chem.unc.edu/wp-content/uploads/2023/05/Diverse-but-desolate-landscape-of-gut-microbial-azoreductases.png)
Here, we chart the scope of the structural and functional diversity of AzoRs in health and in patients with the inflammatory bowel diseases (IBDs) UC and Crohn’s Disease (CD).
![](https://chem.unc.edu/wp-content/uploads/2023/05/Carbodiimide-Ring-Opening-Metathesis-Polymerization.png)
Here we report a strategy that begins to address this limitation founded on a mechanistic discovery: ring-opening metathesis polymerization (ROMP) of carbodiimides followed by carbodiimide derivatization.
![](https://chem.unc.edu/wp-content/uploads/2023/05/Mismatched-covalent-and-noncovalent-templating-leads-to-large-coiled-coil-templated-macrocycles.png)
Herein we describe the use of dynamic combinatorial chemistry to self-assemble complex coiled coil motifs. We amide-coupled a series of peptides designed to form homodimeric coiled coils with 3,5-dithiobenzoic acid (B) at the N-terminus and then allowed each B-peptide to undergo disulfide exchange.