Tuning Molecular Vibrational Energy Flow within an Aromatic Scaffold via Anharmonic Coupling.

ABSTRACT: From guiding chemical reactivity in synthesis or protein folding to the design of energy diodes, intramolecular vibrational energy redistribution harnesses the power to influence the underlying fundamental principles of chemistry. To evaluate the ability to steer these processes, the mechanism and time scales of intramolecular vibrational energy redistribution through aromatic molecular scaffolds have been assessed by utilizing two-dimensional infrared (2D IR) spectroscopy. 2D IR cross peaks reveal energy relaxation through an aromatic scaffold from the azido- to the cyano-vibrational reporters in para-azidobenzonitrile (PAB) and para-(azidomethyl)benzonitrile (PAMB) prior to energy relaxation into the solvent. The rates of energy transfer are modulated by Fermi resonances, w

SUBMITTER: Schmitz AJ 

PROVIDER: S-EPMC7045801 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature