Photosynthetic antennae and organic electronic materials use topological, structural and molecular control of delocalized excitons to enhance and direct energy transfer. In this talk, I will show that we can design, synthesize, and characterize novel 2D molelcualr aggregates derived from cyanine dyes, with greatly enhanced transition dipoles due to excitonic super-radiance. I discuss a generalized classification scheme for these aggregates in terms of their temperature dependent absorption and emission properties.  We show that several types of these aggregates have greatly redshifted emission in the short-wavelength infrared, the spectral region from 1-2 microns. Such materials have possible applications in telecom and biological imaging.

Developing and classifying 2D supramolecular aggregates derived from polymethine dyes

256th National Meeting (2018)

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