Photoactive devices including porphyrinoids with coordinating additives

US9029837B2 · kind B2 · utility

Assignee

• THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US

Inventors

• Stephen R. Forrest · Ann Arbor, US
• Jeramy D. Zimmerman · Golden, US
• Eric Yu · Ann Arbor, US
• Mark E. Thompson · Villa Park, US
• Cong Trinh · Santa Clara, US
• Matthew T. Whited · Northfield, US
• Vlacheslav Diev · Los Angeles, US

Key dates

• Filing date: Oct 12, 2011
• Grant date: May 12, 2015
• Expiry date: Aug 28, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

Coordinating additives are included in porphyrinoid-based materials to promote intermolecular organization and improve one or more photoelectric characteristics of the materials. The coordinating additives are selected from fullerene compounds and organic compounds having free electron pairs. Combinations of different coordinating additives can be used to tailor the characteristic properties of such porphyrinoid-based materials, including porphyrin oligomers. Bidentate ligands are one type of coordinating additive that can form coordination bonds with a central metal ion of two different porphyrinoid compounds to promote porphyrinoid alignment and/or pi-stacking. The coordinating additives can shift the absorption spectrum of a photoactive material toward higher wavelengths, increase the external quantum efficiency of the material, or both.