Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session AAA04: V: Spectroscopy and Experiment in Chemical Physics
12:30 PM–2:06 PM,
Wednesday, March 22, 2023
Room: Virtual Room 4
Sponsoring
Unit:
DCP
Chair: Xingjian Wang, University of Alabama in Huntsville
Abstract: AAA04.00003 : Cyanophenylalanine structural reconfiguration induced by ion binding: Magnesium-specific nitrile chelation motif in M2+ complexes
12:54 PM–1:06 PM
Presenter:
Sean C Edington
(Yale University)
Authors:
Sean C Edington
(Yale University)
Ahmed Mohamed
(Yale University)
Mark A Johnson
(Yale University)
We characterize the spectral and structural response of para-cyanophenylalanine to well-controlled changes in electrostatic environment by collecting infrared spectra of the cold (~10 K), isolated ion alone and in complex with different divalent cations. This is accomplished by isolating the mass-selected, gas-phase cation in a temperature-controlled, radiofrequency ion trap and monitoring the laser-induced photodissociation of weakly bound “mass tags,” typically H2 or He, as a function of photon energy. The linear absorption spectra so collected are interpreted using electronic structure calculations, showing that the Mg2+ complex adopts a dominant configuration - characterized by direct interaction between the nitrile group and bound ion - that is distinct from the dominant configurations of the complexes with other divalent cations (Ca2+, Sr2+, Ba2+).
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700