May 19, 2009
Author(s): Jon Welch , Charles Amos , Scott Miller , Dr. Chandra Prayaga , Dr. Guoqing Wu , Dr. Laszlo Ujj
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.