A series of 2,6-diarylethynyl-9,10-dialkoxyanthracenes have been synthesized, characterized, and evaluated for their morphological and electro-optical properties. Compounds with 2′-naphthyl and 2′-anthracyl peripheral substituents were found to have poor solubility, and were not explored in detail. However, compounds bearing 9′-anthracyl peripheral substituents exhibited better solubility, and a series of these compounds containing straight-chain and branched substituents were prepared and analyzed. These compounds were found to undergo two oxidations at +0.57 V and +0.76 V relative to a Fc/Fc + reference. The compounds exhibited absorption with a λ onset of 510 nm. Based on this, the average solution-phase HOMO-LUMO energies of these compounds were estimated to be -5.37 eV and -2.94 eV, respectively. The compounds exhibited fluorescent behavior, with an emission maximum at 505 nm. Hexoxy and Isobutoxy substituents were optimal for large crystal formation, and crystallographic studies on these two compounds show a herringbone-type arrangement with 1-dimensional pi-stacking.
|Number of pages||5|
|State||Published - Nov 21 2012|
Bibliographical noteFunding Information:
This material is based upon work supported by the Kentucky NASA EPSCoR program, by the National Science Foundation under CHE-0922033, by the Jones/Ross Research Center at Murray State University, and by the Murray State University Committee on Institutional Research. X-ray data were collected using both a Nonius KappaCCD diffractometer and a Bruker Nonius X8 Proteum diffractometer obtained with funding from the NSF (MRI grant No. 0319176 ). The authors also wish to thank Daniel Johnson (Murray State University) for his assistance with the electrochemical and photoluminescence analyses.
ASJC Scopus subject areas
- Drug Discovery
- Organic Chemistry