Andy Napper
Title: Professor of Chemistry
Subject Area: Chemistry
Office Location: MAS323
Phone: (740) 351-3100
Email: anapper@shawnee.edu
Education
B.Sc., University College of Wales, Swansea, U.K
Ph.D., University of Pittsburgh
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Dr. Napper is a physical chemist who teaches both freshman level chemistry courses (CHEM1121/1141/1142), analytical chemistry (CHEM3323/3325), and the senior level physical chemistry sequence (CHEM4431/4432).
Prof. Napper's research has spanned the fields of computational chemistry, laser spectroscopy, and fermentation science. He served as department chair for Natural Sciences from 2012 2018, with a brief appointment as acting dean of arts & sciences during the 2015 2016 academic year. He has held several positions with the Central Ohio American Chemical Society, including chair and secretary.
In his down-time, Dr. Napper enjoys reading, star-trek, and brewing the occasional batch of beer.
Undergraduate Research Projects
1. Construction of CdSe Quantum Dot Photovoltaic Cells
CdSe quantum dots of various sizes were prepared using a previously published procedure. These quantum dots were physisorbed onto a nanocrystalline rutile TiO layer and a photovoltaic cell was constructed using two layers of ITO (Indium Tin Oxide) doped glass, a graphite electrode, and I/I electrolyte. iV (current-voltage) curves were measured and used to calculate efficiency.
Alkane thiols of various lengths, terminated with the COOH functional group, were used to covalently attach the quantum dots to the TiO layer. Efficiencies were compared with the physisorbed system.
泭Photovoltaic cell construction
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Vials Containing Synthesized CdSe Quantum Dots
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Fluorescent Properties of CdSe Quantum Dots
2. Analysis of Banknotes for Cocaine Using Single-Ion-Mode (SIM) Gas-Chromatograph/Mass-Spectrometry (GC/MS)
Cocaine was extracted from $5, $10, and $20 bills using dilute HCl, followed by treatment with dilute NH. The cocaine was concentrated using a C-18 solid phase extraction column, followed by elution with methanol. Injection of a 1 繕L sample into a GC-MS allowed for identification of cocaine. After a standard curve was constructed, it was possible to determine how much cocaine was present on each bank note. Amounts ranging from nanograms (10領 g) to micrograms (10領 g) were detected on each note.
Chemical Structure of Cocaine
3. Construction of a Diode-Laser Light-Scattering Spectrometer and the Determination of Kinetic Parameters of Colloidal Sulfur Formation
A diode-laser light scattering spectrometer was constructed using a previously published procedure. Colloidal sulfur was generated using the reaction between dilute HCl and NaSO, and the kinetics of sulfur formation was generated by measuring scattered laser light intensity vs. time.
Experimental Set-Up (Side-View)
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Experimental Set-Up (Top-View)
4. High-Resolution Infrared Spectroscopic Study of Polyatomic Gases
HCl(g), HBr(g), HI(g), and CH(g), along with the isotopomers DCl, DBr, DI, and CD were generated and collected in an IR gas cell. High resolution (0.5 cm鄞) FTIR spectra were collected, and rotational-vibrational (ro-vib) parameters were calculated by analysis of the P-(Q)-R branches of the ro-vib spectra.
5. Fusel Alcohol Concentration as a Function of Fermentation Temperature Monitored Using GC/MS
Fermentation of sugars at elevated temperatures leads to generation of undesirable fusel alcohols. These fusel alcohols contribute to an off-taste of distilled spirits, as well as contributing to hang-overs. This project investigated the fermentation of glucose using brewers yeast (Saccharomyces cerevisiae) at various temperatures and fermentation times. Concentrations of the fusel alcohols: 1-propanol, 1-butanol, and 1-pentanol were determined by injection of 1 繕L samples into a GC/MS, and analyzed using an internal standard.
Service
Select service work:
- Chairperson, Department of Natural Sciences: May 2012 May 2018
- Acting Dean, College of Arts & Sciences: September 2015 June 2016
- Science fair judge, 2001 present
- AQIP category 2 team member, 2016 2017
- Academic Appeals Committee, 2012 2018
- Academic Affairs Strategic Plan Committee, 2016
- Safety & Security Committee, 2014 2016
- Continuous Improvement & Mission Committee, 2013 2015
- University Technology Advisory Committee, 2004 2011
- Co-chair, Ohio Department of Higher Education, Transfer Pathways in Math & Science, 2017 2018
- Chair elect (2013), Chair (2014), Past-Chair (2015), Secretary (2016 2017), Central Ohio Valley American Chemical Society
Publications
- N. Balabai, B. Linton, A. Napper, S. Priyadarshy, A. P. Sukharevsky, and D. H. Waldeck; Orientational Dynamics of 帣-Cyclodextrin Inclusion Complexes,泭The Journal of Physical Chemistry B;泭1998; 102(48); 9617 9624.泭泭泭DOI:泭
- I. Read, A. Napper, R. Kaplan, M. B. Zimmt, and D. H. Waldeck; Solvent-Mediated Electronic Coupling: The Role of Solvent Placement,泭Journal of the American Chemical Society;泭1999; 121(47); 10976 10986.泭泭泭DOI:泭
- I. Read, A. Napper, M. B. Zimmt, and D. H. Waldeck; Electron Transfer in Aromatic Solvents: The Importance of Quadrupolar Interactions,泭The Journal of Physical Chemistry A;泭2000; 104(41); 9385 9394.泭泭泭DOI:泭
- A. M. Napper, I. Read, and D. H. Waldeck, Nicholas J. Head, Anna M. Oliver, and M. N. Paddon-Row; An Unequivocal Demonstration of the Importance of Nonbonded Contacts in the Electronic Coupling between Electron Donor and Acceptor Units of Donor-Bridge-Acceptor Molecules,泭Journal of the American Chemical Society;泭2000; 122(21); 5220 5221.泭泭泭DOI:泭
- R. W. Kaplan, A. M. Napper, D. H. Waldeck, and M. B. Zimmt; Solvent Mediated Coupling Across 1 nm: Not a 泭Bond in Sight,泭Journal of the American Chemical Society;泭2000; 122(48); 12039 12040.泭泭泭DOI:泭
- A. M. Napper, H. Liu, and D. H. Waldeck; The Nature of Electronic Coupling through Insulating Barriers on Au Electrodes. The Importance of Chain Composition, Interchain Coupling, and Quantum Interference,泭The Journal of Physical Chemistry B.;泭2001; 105(32); 7699 7707.泭泭泭DOI:泭
- R. Kaplan, A. M. Napper, D. H. Waldeck, and M. B. Zimmt; The Role Played by Orbital Energetics in Solvent Mediated Electronic Coupling,泭The Journal of Physical Chemistry A.;泭2002; 106(10); 1917 1925.泭泭泭DOI:泭
- A. M. Napper, I. Read, D. H. Waldeck, R. W. Kaplan, and M. B. Zimmt; Electron Transfer Reactions of C-shaped Molecules in Alkylated Aromatic Solvents: Evidence that the Effective Electronic Coupling Magnitude Is Temperature-Dependent,泭The Journal of Physical Chemistry A.;泭2002; 106(18); 4784 4793.泭泭泭DOI:泭
- A. M. Napper, I. Read, R. Kaplan; M. B. Zimmt, and D. H. Waldeck; Solvent Mediated Superexchange in a C-Clamp Shaped Donor-Bridge-Acceptor Molecule: The Correlation between Solvent Electron Af麍nity and Electronic Coupling,泭The Journal of Physical Chemistry A.;泭2002; 106(21); 5288 5296.泭泭泭DOI:泭
- A. M. Napper, N. J. Head, A. M. Oliver, M. J. Shephard, M. N. Paddon-Row, I. Read, and D. H. Waldeck; Use of U-shaped Donor-Bridge-Acceptor Molecules To Study Electron Tunneling through Nonbonded Contacts,泭Journal of the American Chemical Society;泭2002;124(34); 10171 10181.泭泭泭DOI:泭
- A. M. Napper, Haiying Liu, H. Yamamoto, D. Khoshtariya, and D. H. Waldeck; Effect of Molecular Properties on Electron Transmission through Organic Monolayer 麍lms in Molecules as components of electronic devices; Marya Lieberman, editor; ACS Symposium Series 844; American Chemical Society: New York, NY;泭2003, 62 75.泭泭泭DOI:泭