Broadly absorbing metalloporphyrin-based multichromophoric arrays for triplet harvesting
AssigneeUniversity of Southern California
InventorsMark E. Thompson, Matthew T. Whited, Peter I. Djurovich
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to multichromophoric assemblies comprising metalloporphyrin scaffolds. The present disclosure also relates, in part, to methods for generating electric-field-stabilized geminate polaron pairs comprising applying electric fields to the multichromophoric assemblies described herein, or alternatively, directly to the metalloporphyrins provided by the present disclosure. The present disclosure further relates, in part, to multichromophoric assemblies comprising metalloporphyrin scaffolds, which exhibit enhanced energy transfer properties.
Claims13
A multichromophoric assembly comprising a metalloporphyrin of Formula I
- or salts or tautomers thereof, wherein:
- Fl1, Fl2, Fl3 and Fl4 are each independently selected from the group consisting of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene, fluorescein, and merocyanine-based dyes, wherein the Fl1, Fl2, Fl3, and Fl4 are directly attached to the metalloporphyrin scaffold or are attached via a linker chosen from alkyl and phenylene;
- R is selected from the group consisting of hydrogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted heteroalkyl, and optionally substituted heteroaryl;
- or
- one or more R groups may be connected to form a cycloalkyl or benzannulated ring system;
- and
- M is selected from the group consisting of Y, La, Zr, Hf, Nb, Ta, Mo, W, Tc, Re, Ru, Os, Rh, Ir, Pd, Pt, Ag, Au, Cd, Hg, Ga, Ge, In, Sn, Sb, Ti, Pb, and Bi, which can be optionally bound to one or more additional neutral or anionic ligands, wherein the ligands are selected from the group consisting of pyridine, imidazole, pyrazine, furan, thiophene, halides, sulfonates and caboxylates.
A method for generating electric-field-stabilized geminate polaron pairs, comprising applying an electric field to a metalloporphyrin of Formula I
- or salts or tautomers thereof, wherein:
- Fl1, Fl2, Fl3 and Fl4 are each independently selected from the group consisting of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene, fluorescein, and merocyanine-based dyes, wherein the Fl1, Fl2, Fl3, and Fl4 are directly attached to the metalloporphyrin scaffold or are attached via a linker chosen from alkyl and phenylene;
- R is selected from the group consisting of hydrogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted heteroalkyl, and optionally substituted heteroaryl;
- or
- one or more R groups may by connected to form a cycloalkyl or benzannulated ring system;
- and
- M is selected from the group consisting of Y, La, Zr, Hf, Nb, Ta, Mo, W, Tc, Re, Ru, Os, Rh, Ir, Pd, Pt, Ag, Au, Cd, Hg, Ga, Ge, In, Sn, Sb, Ti, Pb, and Bi, which can be optionally bound to one or more additional neural or anionic ligands, wherein the ligands are selected from the group consisting of pyridine, imidazole, pyrazine, furan, thiophene, halides, sulfonates and caboxylates, and wherein charge separation to form geminate pairs are achieved without external dopants.
Dependencies are inferred from the claim text.