SEASTARS
Investigation of a Molecular Rotor with Vibrational Spectroscopy
Author(s): Jon Welch , Charles Amos , Scott Miller , Dr. Chandra Prayaga , Dr. Guoqing Wu , Dr. Laszlo Ujj
Abstract:
The investigation of julolidinemalononitrile push-pull chromophore vibrational transitions
in a julolidene-based molecular rotor (DCVJ) by means of electronic resonance enhanced
Coherent Anti-Stokes Raman Spectroscopy (CARS) is presented. Previous measurements of the
structurally sensitive region of the chromophore showed a broad vibrational band. The
present work shows this band to be composed of two distinct vibrational modes resolved by
suppression of solvent spectral contributions by resonance enhancement of the molecular
bands. The details of this work is presented and shown to exist only under the increased
resolution conditions of the CARS system.