Professor Emeritus, B.A., M.S., Ph.D.
Contact Information
Department of Chemistry
St. John's University
8000 Utopia Parkway
Queens, NY 11439-0001
Phone: (718) 990-6161,Ext. 6291
testaa@stjohns.edu
Research Interests: Photochemistry
and Spectroscopy
My research efforts are directed at the elucidation of the
photochemical and photophysical properties of aromatic molecules.
The techniques that we employ include flash photolysis, molecular
emission relaxation and photon counting, with kinetic measurements
covering the temporal domain from seconds to nanoseconds. Molecular
absorption and luminescence methods supplemented by semi-empirical
molecular orbital calculations have provided us with an increasing
understanding of the influence of light on molecular systems. We
are currently involved with characterizing electronically excited
states in aromatic heterocyclic molecules.
Recent Research Publications:
- A. C. Testa, Laser Flash Photolysis Study of
Triphenylimidazole, Spectrochim. Acta, 56A, 901 (2000).
- A. C. Testa, Hydrogen Bonding and the Protonated Water Dimer,
Spectry. Lttrs., 32, 819 (1999).
- A. C. Testa, Surface Enhanced Raman Spectrum of
Triphenylimidazole, Spectrochim. Acta, 55A, 2393 (1999).
- A. C. Testa, The N-B Vibrational Frequency in Complexes of
Aromatic Azines with BCl3, Spectrochim. Acta, 55A, 299 (1999).
- F. Deng, J. Kubin and A. C. Testa, Induced Fluorescence of
Phenylpyridines by Hydrogen Bonding Complexation, J. Photochem.
Photobiol., 118A, 1 (1998).
- F. Deng and A. C. Testa, Sensing pH-Dependent Fluorescence in a
Hydrocarbon Solvent with 2,6-Diphenylpyridine, J. Photochem.
Photobiol., 112A, 191 (1998).
- A. C. Testa, S. Schneider and B. Brem, Time-Resolved Resonance
Raman Study of 4-Phenylpyridine, J. Photochem., Photobiol., 107A,
147 (1997).
- F. Deng, J. Kubin and A. C. Testa, Deuterium Isotope Effects on
the Fluorescence of Phenylpyridines, J. Photochem. Photobiol.,
104A, 65 (1997).
- J. Kubin and A. C. Testa, Excited State Protonation of
Phenylpyridines, J. Photochem. Photobiol., 83A, 91 (1994).
- S. Hotchandani and A. C. Testa, Influence of Electron Donor
Substituents on the Luminescence Behavior of a 2-Aminoazine, J.
Lumin., 59, 59 (1994).