Laser Chemistry and Spectroscopy

Special Physical Seminar: Mark Johnson (Yale)

Mon, 2015-10-05 16:00 - 17:00
Speaker: 

Prof. Mark Johnson

Yale University

Location: 
Lynch Lecture Hall
Attached Document: 
From water clusters to structural metabolomics: A chemical physicist’s journey to the heart of contemporary chemistry with cryogenic ion photofragmentation mass spectrometry

Special Physical Seminar: NJ Tao (Arizona State)

Fri, 2015-02-27 13:00 - 14:00
Speaker: 
Prof. NJ Tao Arizona State University
Location: 
Lynch Lecture Hall

Controlling charge transport in single molecules

 

Abstract

Special Physical Chemistry Seminar: Hrvoje Petek, Pittsburgh

Mon, 2014-09-22 16:00 - 17:00
Speaker: 
Prof. Hrvoje Petek University of Pittsburgh
Location: 
Lynch Lecture Hall

Molecular interactions on one-dimensional substrates.

Special Physical Chemistry Seminar (Leif Hammarstrom, Uppsala)

Thu, 2014-10-02 13:00 - 14:00
Speaker: 
Prof. Leif Hammarström Uppsala University
Location: 
Carol Lynch Lecture Hall Chemistry Complex
Attached Document: 

 

Molecular Mechanisms of Artificial Photosynthesis

 

Emily Weiss, Northwestern (Special Physical Seminar)

Thu, 2014-06-26 13:00 - 14:00
Speaker: 

Prof. Emily A. Weiss

Northwestern University

 

Title: Electron Ratchets

Location: 

Lynch Lecture Hall

Attached Document: 

Jessica M. Anna

Photo: 
First Name: 
Jessica M.
Last Name: 
Anna
Official Title: 
Assistant Professor of Chemistry

Physical Chemistry, Laser Spectroscopy, Ultrafast Dynamics, Chemical Reaction Dynamics, and Energy Science

Additional Titles: 
Elliman Faculty Fellow
Contact Information
Office Location: 
251 Chem
Email: 
jmanna@sas.upenn.edu
Phone: 
215-746-2354
Admin Support: 
Education: 

B.S. University of Pittsburgh (2006)

 

Ph.D. University of Michigan (2011)

 

Postdoctoral Research Fellow, University of Michigan (2011)

 

Postdoctoral Research Fellow, University of Toronto (2011-2014)

Research Interests: 

Solar energy conversion, in both natural and artificial systems, involves the absorption of a photon that can then lead to a series of energy and electron transfer events. Research in the Anna group focuses on understanding these photoinitiated processes. More specifically we are interested in exploring (1) the interplay of vibrational motion with both electronic energy transfer and electron transfer reactions, and (2) the role the environment plays in these processes. To begin to answer these questions we employ both well-established and novel multidimensional spectroscopic techniques to explore photoinitiated processes in a range of systems, spanning interests in biology, chemistry, and physics.

Selected Publications: 

J. M. Anna, M. R. Ross, K. J. Kubarych, “Dissecting Enthalpic and Entropic Barriers to Ultrafast Equilibrium Isomerization of a Flexible Molecule Using 2DIR Chemical Exchange Spectroscopy”, J. Phys. Chem. A 113 (2009) 6544-6547.

 

J. M. Anna and K. J. Kubarych, “Watching Solvent Friction Impede Ultrafast Barrier Crossings: A Direct Test of Kramers Theory”, J. Chem. Phys. 133 (2010) 174596.

 

J. M. Anna, M. J. Nee, C. R. Baiz, R. McCanne, K. J. Kubarych, “Measuring Absorptive Two-Dimensional Infrared Spectra Using Chirped-Pulse Upconversion Detection”, J. Opt. Soc. Am. B. 27 (2010) 382-393.

 

J. M. Anna, E. E. Ostroumov, K. Maghlaoui, J. Barber, and G. D. Scholes “Two-Dimensional Electronic Spectroscopy Reveals Ultrafast Downhill Energy Transfer in Photosystem I Trimers of the Cyanobacterium Thermosynechococcus elongatus”, J. Phys. Chem. Lett. (2012), 3, 3677-3684.

 

J. M. Anna, Y. Song, R. Dinshaw and G. D. Scholes “Two-dimensional electronic spectroscopy for mapping photophysics”, Pure. Appl. Chem. (2013), 85, 1307-1319.

 

J. M. Anna, G. D. Scholes, and R. van Grondelle, “A Little Coherence in Photosynthetic Light Harvesting”, BioScience (2014), 64, 14-25

Special Energy Seminar: L. Robert Baker, Berkeley

Tue, 2013-11-26 22:00
Speaker: 

Dr. L. Robert Baker   
University of California, Berkeley

Location: 

Carolyn Hoff Lynch Lecture Hall
Chemistry Complex
231 South 34th Street

Attached Document: 

Charge Transfer and Chemistry at Catalytic Interfaces

Abstract

Special Seminar: Kevin Kubarych, U. Michigan

Tue, 2013-07-23 13:00
Speaker: 

Prof. Kevin J. Kubarych

University of Michigan

Location: 

Lynch Lecture Hall

Dynamical chemistry captured with ultrafast two-dimensional infrared spectroscopy

 

Greg Scholes, University of Toronto; Physical Chemistry Seminar

Thu, 2013-06-27 13:00
Speaker: 

Prof. Gregory Scholes

University of Toronto

 

Functional novelties employed in light harvesting by diverse photosynthetic systems

 

Abstract:

 

Photosynthetic light harvesting complexes are sophisticated multichromophoric assemblies used to regulate and concentrate photo-excitations for delivery to reaction centers under wide-ranging incident irradiances [1]. They provide wonderful model systems for the study of energy transfer mechanisms in well-defined structures [2]. I will describe a few examples of ultrafast energy transfer in photosynthetic light harvesting, including the incredible use of nominally dark higher excited states of carotenoids to distribute excitation energy in LH2 from purple bacteria [3]. I will address the current status and issues regarding coherent ultrafast energy transfer in light harvesting complexes of cryptophyte algae.

 

[1] G. D. Scholes, T. Mirkovic, D. B. Turner, F. Fassioli and A. Buchleitner “Solar light harvesting by energy transfer: From ecology to quantum mechanics” Energy Environ. Sci. 5, 9374–9393 (2012).

[2] G. D. Scholes, G. R. Fleming, A. Olaya-Castro and R. van Grondelle, “Lessons from nature about solar light harvesting” Nature Chem. 3, 763–774 (2011).

[3] E. E. Ostroumov, R. M. Mulvaney, R. J. Cogdell, G. D. Scholes, “Broadband 2D Spectroscopy Reveals a Carotenoid Dark State in Purple Bacteria”, Science 340, 52–56 (2013).

Location: 

Lynch Lecture Hall

Special Seminar: Erol Akçay, Princeton

Mon, 2013-02-04 10:00
Speaker: 
Dr. Erol Akçay
Princeton University

New frontiers in social evolution theory

Host: Josh Plotkin (Biology)
Location: 

Lynch Lecture Hall

 

Cooperation between organisms is a major driving force of biological organization at all levels, from single cells to whole ecosystems. Understanding the evolutionary dynamics of cooperation and other social traits therefore is a central goal of evolutionary theory. I will talk about my recent work that aims to advance the frontiers of social evolution theory in two directions.

 

Department of Chemistry

231 S. 34 Street, Philadelphia, PA 19104-6323

215.898.8317 voice | 215.573.2112 fax | web@chem.upenn.edu

Syndicate content