1. Synthesis and Characterization of Novel Donor/Acceptor Molecules
Based on Propellanes: A Probe of Nonclassical Conjugation
Frankie Ann McCormick, Department of Chemistry, Northern Michigan University
Nonclassical conjugation gives rise to charge transfer:
UV absorption and fluorescence spectra indicate significant electronic interaction through the bicyclo[1.1.1]pentane.
Potential applications of these molecules include optics, molecular electronics, and energy transfer.
UV-vis show more intense, longer wavelength absorptions relative to the comparable p-substituted aryl alkynes:
Emission spectra exhibit a pronounced solvent effect due to substantial charge transfer in the excited state:
Normalized spectra/ Excitation 284 nm
All spectra in cyclohexane