Perfluorometallofluorenes as n-type building blocks for organic electronics

ORGN 760

Katharine Geramita, geramita@berkeley.edu1, Jennifer McBee, mcbee@berkeley.edu2, and T. Don Tilley, tdtilley@berkeley.edu2. (1) Department of Chemistry, UC Berkeley, Berkeley, CA 94609, (2) Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720
Recently the use of organic semiconducting materials for applications in “plastic electronics”, such as field effect transistors (FETs), organic light emitting diodes (OLEDs), and photovoltaics (PVs), has gained increasing interest. In general, conjugated organic pi-systems are effective hole-transporting (p-type) materials; however, the development of improved devices (e.g. FET and PV) should be facilitated by the introduction of efficient electron-conducting (n-type) materials. The development of n-type conducting organic materials should benefit from the incorporation of electron-deficient moieties into conjugated systems. To this end various series of 2,7-derivatized perfluorinated metallofluorenes were synthesized via nucleophilic aromatic substitution and investigated for their suitability as electron conducting components. It was observed that variations in both the nature of the 2,7-substituent (conjugation length, electron donating/withdrawing nature, etc.) as well as the identity of the heteroatom at the 9- position (Si, Ge, P, etc.) resulted in significant differences in the optical, electrochemical, and macromolecular assembly properties.
 

Materials, Devices, and Switches
8:00 AM-12:00 PM, Thursday, March 29, 2007 McCormick Place Lakeside -- Room E450 A/B, Level 4, Oral

Division of Organic Chemistry

The 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007