Education & Certifications
M.S., University of Michigan, Ann Arbor, Conservation Ecology (2014)
B.S., The College of William & Mary, Chemistry, Biology (2012)
Current Research and Scholarly Interests
General research interests: How environmental chemistry influences soil and sediment microbial community dynamics and carbon cycling. Microbial activity plays a large role in carbon storage, greenhouse gas release, and the transport of toxic metals. However, microbial processes differ vastly depending on local environmental conditions. I study how the availability of substrates microbes use to generate energy affects microbial ecology and the processes and rates controlling carbon cycling.
- Phylogenetic distance does not predict competition in green algal communities ECOSPHERE 2015; 6 (7)
Local Solvent Acidities in beta-Cyclodextrin Complexes with PRODAN Derivatives
JOURNAL OF PHYSICAL CHEMISTRY B
2013; 117 (12): 3323–27
The local solvent acidities (SA scale) of six 6-carbonyl-2-aminonaphthalene derivatives as β-cyclodextrin complexes in water are determined through fluorescence quenching. The local polarities (E(T)(N) scale) are determined through the shift of the emission center-of-mass. The apparent SA values reflect the solvent structure surrounding the guest’s carbonyl group, whereas the apparent E(T)(N) values reveal the net polarity of the entire guest molecule. Comparison of these values affords greater insight into the structures of the host–guest complexes. Derivatives 1 and 5 show unusually large acidities, indicative of highly exposed carbonyl groups. The remaining compounds give emission intensities pointing to shielded carbonyl groups. In this study, PRODAN and its derivatives are functioning as dual channel sensors of their local environment.
View details for DOI 10.1021/jp400765x
View details for Web of Science ID 000317032300007
View details for PubMedID 23473052
View details for PubMedCentralID PMC3627219
Carbonyl-Twisted 6-Acyl-2-dialkylaminonaphthalenes as Solvent Acidity Sensors
JOURNAL OF ORGANIC CHEMISTRY
2013; 78 (5): 1784–89
Derivatives of 2-propionyl-6-dimethylaminonaphthalene (PRODAN) with twisted carbonyl groups were investigated as highly responsive sensors of H-bond donating ability. The PRODAN derivative bearing a pivaloyl group (4) was prepared. The torsion angle between the carbonyl and naphthalene is 26° in the crystal. It shows solvatochromism that is similar to five other PRODAN derivatives (1-3, 5, 6). Twisted-carbonyl derivatives 3, 4, and 6 show strong fluorescence quenching in protic solvents. The order of magnitude of the quenching is linearly related to the H-bond donating ability of the solvent (SA) but not to other solvent properties. Binary mixtures of protic solvents show specific interaction effects with respect to quenching and solvatochromism. Aggregation in water is an issue with the pivaloyl derivatives.
View details for DOI 10.1021/jo301263g
View details for Web of Science ID 000315707500012
View details for PubMedID 22894649
View details for PubMedCentralID PMC3511668