Joseph Keene

josephkeene

Assistant Professor

B.S., Wake Forest University, 2009
Ph.D., Vanderbilt University, 2015

Member of the Mercer University faculty since 2015

 

Contact Info
Willet Science Center, Room 324
(478) 301-2341
keene_jd@mercer.edu

 

Current Office Hours - Spring 2017
Mondays 11:00 a.m. - 12:00 p.m.
Tuesdays & Thursdays 10:50 - 11:50 a.m.
or by appointment

 

Courses
CHM 111: General Chemistry I
CHM 112: General Chemistry II
CHM 295: Chemical Research
CHM 341: Instrumental Analysis
CHM 371: Problems in Chemistry I

 

Research Interests 
Quantum Dots (QDs): Synthesis, Spectroscopy, and Surface Chemistry.
My current research projects investigate the thermodynamics of the surface modification of semiconductor nanocrystals via isothermal titration calorimetry (ITC). This work will enable optimization of current ligand exchange protocol to be more efficient, reducing chemical consumption and time. These efforts will also alleviate adverse effects on the QDs that may result from the surface modification process.

 

Publications
Orfield, N. J.; McBride, J. R.; Wang, F.; Buck, M. R.; Keene, J. D.; Reid, K. R.; Htoon, H.; Hollingsworth, J. A.; Rosenthal, S. J.; Quantum Yield Heterogeneity among Single Nonblinking Quantum Dots Revealed by Atomic Structure-Quantum Optics Correlation. ACS Nano 2016, 10 (2), 1960-1968.

Orfield, N. J.; McBride, J. R.; Keene, J. D.; Rosenthal, S. J.; Correlation of Atomic Structure and Photoluminescence of the Same Quantum Dot: Pinpointing Surface and Internal Defects that Inhibit Photoluminescence. ACS Nano 2015, 9 (1), 831-839.

Keene, J. D.; McBride, J. R.; Orfield, N. J.; Rosenthal, S. J. Elimination of Hole-Surface Overlap in Graded CdSxSe1-x Nanocrystals Revealed By Ultrafast Fluorescence Upconversion Spectroscopy. ACS Nano 2014, 8 (10), 10665-10673.

Niezgoda, J. S.; Yap, E.; Keene, J. D.; McBride, J. R.; Rosenthal, S. J. Plasmonic CuxInyS2 Quantum Dots Make Better Photovoltaics Than Their non-Plasmonic Counterparts. Nano Letters 2014, 14 (6), 3262-3269.

Kochemba, W. M.; Pickel, D. L.; Keene, J. D., Rosenthal, S. J.; Sumpter, B. G.; Chen, J.; Kilbey, S. M., II, In Situ Formation of Pyridyl-Functionalized Poly(3-hexylthiophene)s via Quenching of the Grignard Metathesis Polymerization: Toward Ligands for Semiconductor Quantum Dots. Chemistry of Materials 2012, 24 (22), 4459-4467.

Dukes, A. D., III; Samson, P. C.; Keene, J. D.; Davis, L. M.; Wikswo, J. P.; Rosenthal, S. J., Single-Nanocrystal Spectroscopy of White-Light-Emitting CdSe Nanocrystals. Journal of Physical Chemistry A 2011, 115(16), 4076-4081.

Hanna, S. N.; Keene, J.; Calloway, C. P., Jr.; Jones, B. T., Design of a Portable Electrothermal Vaporization Flame Atomic Emission Spectrometry Device for Field Analysis. Instrumentation Science & Technology 2011, 39 (4), 345-356.

 

Fun Facts 
I enjoy spending time with family, fishing, and watching football.