Optical Properties of Donor/Acceptor Chalcone Materials in Solution and the Solid State

Authors

  • Christopher A. DeRosa West Virginia Wesleyan College
  • Frederik Broendsted West Virginia Wesleyan College

Keywords:

Luminescence

Abstract

Organic fluorophores have gained interest in microscopy and optoelectronic applications. In particular, chalcone-based derivatives have been discovered as organic alternatives to conventional emitters such as metal complexes and inorganic salts. Advantages include bright fluorescence, low toxicity, and micro-environmental sensitivity to solvent polarity, viscosity and pH. In particular, properties such as solvatochromism (solvent polarity) can be utilized to sense microenvironment cellular components, such as the nonpolar phospholipid-based cell membranes. In this presentation, a series of chalcone-based materials were synthesized to probe the effects of modulating the donor/acceptor pairing (e.g. dicynanovinyl and carbonyl) and aromatic p-conjugation (e.g. naphthyl and thienyl). Dyes were prepared in 2-3 in low to moderate yields. Preliminary results in dichloromethane showed green fluorescence and modest quantum yields (~30%). Dyes showed solvatochromic behavior where the fluorescence is blue in nonpolar solvents (toluene) and orange in polar solvents (dimethyl sulfoxide) (D = 120nm). Multiple fluorescence chromisms in the solid state is also observed. Optical properties of the dyes and future directions will be presented.

Author Biography

Christopher A. DeRosa, West Virginia Wesleyan College

Department of Chemistry

Assistant Professor

Downloads

Published

2018-04-02

How to Cite

DeRosa, C. A., & Broendsted, F. (2018). Optical Properties of Donor/Acceptor Chalcone Materials in Solution and the Solid State. Proceedings of the West Virginia Academy of Science, 90(1). Retrieved from https://pwvas.org/index.php/pwvas/article/view/384

Issue

Section

Meeting Abstracts-Poster