For transition-metal mediated coordination-driven self-assemblies to be utilized for applications such as bio-imaging and photon-emitting devices, a strong understanding of their absorption and emission processes is a must to guide future designs within these goals. These systems will ideally exhibit facile tunability while utilizing inexpensive materials and simple synthetic routes.Recently, an endohedral amine-functionalized D2h rhomboid was published from our group that displayed ligand-centered absorption and emission profiles in the visible region. It has been determined that substituting Pd for Pt has little effect on the photophysical properties; however, changes to the organic donor have marked effects. For example, a substituent para to the endohedral amine as in 2,6-bis(4-pyridyl-ethynyl) 4-methyl aniline red-shifts the absorption and emission profiles. By altering the position of the coordinating nitrogen, 2,6-bis(3-pyridyl-ethynyl) aniline, the absorption and emission profiles are blue-shifted while greatly diminishing the quantum yield.

Investigation of metal and ligand effects on the photophysical properties of endohedral amine-functionalized self-assembled metallacycles

245th National Meeting (2013)

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