1. Evidence of Enhanced Conjugation in ortho-Arylene Ethynylenes with Transition Metal Coordination.
- Author
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Qianwei Ren, Reedy, Cole G., Terrell, Eric A., Wieting, Joshua M., Wagie, Robert W., Asplin, Jake P., Doyle, Leah M., Long, Steven J., Everard, Michael T., Sauer, Jon S., Baumgart, Cassandra E., D'AcchioLi, Jason S., and Bowling, Nathan P.
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BIOCONJUGATES , *BINDING sites , *ORGANIC compounds , *HETEROCYCLIC compounds , *ORGANIC chemistry - Abstract
The effective conjugation of ortho and ortho-altpara-arylene ethynylenes, with appropriately positioned pyridine and pyrazine heterocycles, increases upon binding to Ag(I) and Pd(II) cations. Significant bathochromic shifts in the electronic spectra, witnessed upon introduction of these metal bridges, are consistent with enhanced electron derealization in the unsaturated backbone. Control studies suggest that this electronic behavior is attributable exclusively (in the case of Ag(I)) or partially (in the case of Pd(II)) to conformational restrictions of the conjugated backbones. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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