Department Chair

  • Daniel Moriarty
    Associate Professor Chemistry
    Morrell Science Center 219
    (518) 783-2472
    dmoriarty@siena.edu

Dr. Jason Hofstein

Email: jhofstein@siena.edu

Educational Background

B. E. Chemical Engineering, 1993, The Cooper Union for the Advancement of Science and Art, New York, NY

Graduate Education

Ph.D., 1999, State University of New York at Stony Brook, Stony Brook, New York

Courses Taught

  • Analytical Chemistry I
    • CHEM 225 lab
  • Integrated Lab I
    • CHEM 316
  • Physical Chemistry I
    • CHEM 310
  • Physical Chemistry II
    • CHEM 320
  • Chemical Kinetics
    • CHEM 321

Research Interests

My research is in physical chemistry, particularly in the field of high-resolution laser absorption spectroscopy. Using Cavity Ring Down Spectroscopy, a technique that is similar to conventional absorption spectroscopy (only orders of magnitude more sensitive), as well as molecular modeling, I address fundamental and applied problems in chemistry and chemical physics. Planned research efforts include temperature-dependent combustion chemistry of aromatics, peptide and polymer dynamics in multiple phases, monitoring of chemical markers in environmental tobacco smoke emissions from the lungs of smokers, developing an early warning sensor for asthma suffers, and development of a low-cost, high-resolution replacement for conventional Breathalyzers.

Recent Publications

  1. "Similarity and Difference in the Behavior of Gases: An Interactive Demonstration.", Guy Ashkenazi, James S. Gordon, Jason D. Hofstein, J. Chem. Educ., 2008, 85 (1), p 72.
  2. "The fate of excited states in jet-cooled aromatic molecules: Bifurcating pathways and very long-lived species from the S1 excitation of phenylacetylene and benzonitrile", J. Hofstein, H. Xu, T. Sears, and P. Johnson, J. Phys. Chem. A., 112 (6), 1195-1201 (2008)
  3. CHE 327 Organic Chemistry Laboratory A: Workbook 2002-2003, Dr. Jason D. Hofstein and Marjorie Kandel, McGraw-Hill, 2002.CHE 327 Organic Chemistry Laboratory A: Workbook 2001-2002, Dr. Jason D. Hofstein and Marjorie Kandel, McGraw-Hill, 2001.
  4. Enhancing Student Preparation for Laboratory Courses via Web-Based Multimedia Presentations, Presidential Mini- Grant for Innovative Teaching Projects. Awarded Spring 2001.
  5. "Reassessing the orbitals of pi systems using photoinduced Rydberg ionization spectroscopy", P.M. Johnson, R. Anand, J.D. Hofstein and J.E. LeClaire, J. Electron Spectrosc. 108 (1-3), 177-187, July 2000.
  6. "MATI and PIRI spectroscopy of the X and A state of trans-1, 3-butadiene cation", J. Hofstein and P. M. Johnson, Chem. Phys. Lett. 316 (3-4), 229 - 237 (2000).
  7. Assignment of the B+ state of the chlorobenzene cation using photoionization Rydberg ionization (PIRI) spectroscopy., R. Anand, J.D. Hofstein, J. E. LeClaire, P. M. Johnson, and C. Cossart-Magos, J. Phys. Chem., 103, 8927-8934 (1999).
  8. "A comparative investigation of Rydberg state survival in several molecules using Mass Analyzed Threshold Ionization", J. Hofstein, J. Goode and P. M. Johnson, Chem. Phys. Lett, 301 (1-2), 121-130, 1999.
  9. "The observation of strong pseudo-Jahn-Teller activity in the benzene cation (B 2E2g) state", J. Goode, J. Hofstein and P. Johnson, J. Chem. Phys. 107, 1703 (1997).

Recent Oral Presentations

  1. Critical Opalescence of binary liquid solutions. 2012 Biennial Conference on Chemical Education (BCCE), Penn State, PA, United States, July 29 ­ August 2, 2012. J. Dudek; T. Gehan; J. Hofstein; P-356
  2. Green chemistry of chalcones: Synthesis of liquid crystals, 243rd ACS National Meeting & Exposition, San Diego, CA, United States, March 25-29, 2012, Erlichman, Sara; O'Brien, Michael; Jason D. Hofstein; Todaro, Alicia
  3. Using the method of optical beam deflection to monitor cytotoxic rates related to induced amyloidosis; 243rd ACS National Meeting & Exposition, San Diego, CA, United States, March 25-29, 2012. Baillargeon, Joshua; Perretti, Diana; Neer, Kelly; McCormick, Nicole; Jason D. Hofstein
  4. Using iPads in the chemistry classroom: Steps toward a fully paperless classroom. 243rd ACS National Meeting & Exposition, San Diego, CA, United States, March 25-29, 2012. Jason D. Hofstein; Moriarty, Daniel; Tucker, Lucas; Dudek, John; Tegas, Lindsay; DeMarte, Nick; Bennion, Jonathan; Gunsch
  5. Determination of the critical opalescence of binary liquid solutions. 243rd ACS National Meeting & Exposition, San Diego, CA, United States, March 25-29, 2012. Weigel, Catherine; Dudek, John; Gehan, Tim, Hofstein, Jason
  6. Trace detection of NO2 and possibly NO3 using CW cavity ring-down spectroscopy. Giokas, Paul; Dudek, John; 239th ACS National Meeting, San Francisco, CA, United States, March 21-25, 2010
  7. Invited Speaker - AIChE sponsored seminar - Department of Chemistry, The Cooper Union for the Advancement of Science and Art. Title of talk: Engineering Applications of Cavity Ringdown Spectroscopy. 11/12/2010. Cavity Ringdown Spectroscopy at Siena College ­ A collaborative effort at Hartwick College (Oneonta, NY), 10/21/2009, 3-4PM.
  8. Spring 2004: Invited Speaker – Siena College – Department of Chemistry and Biochemistry. Title of talk: Quantum Dots: Quantum Mechanics, Absorption Spectroscopy, and the Wonderful World of Approximations.
  9. Spring 2000: Invited Speaker – SUNY at Stony Brook – Department of Chemistry. Title of talk: The physical and chemical properties of carbon dioxide.
  10. Fall 1998: Invited Speaker - AIChE sponsored seminar - Department of Chemistry and Chemical Engineering - The Cooper Union for the Advancement of Science and Art. Title of talk: High Resolution Spectroscopy: A Guided Tour.
  11. Fall 1996: Seminar – SUNY at Stony Brook – Department of Chemistry. Title of talk: “Table Top” Soft x-ray Lasers: Some Concepts and Applications.

 

 

Associate Professor