Journal
ADVANCED MATERIALS
Volume 24, Issue 48, Pages 6496-6501Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201202817
Keywords
block copolymers; conjugated polymers; conjugated polyelectrolytes; polymer light-emitting diodes
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Funding
- Mitsubishi Chemical Center for Advanced Materials (MC-CAM)
- National Science Foundation [DMR-1005546]
- Department of Energy Office of Basic Energy Sciences [DE-SC0002368]
- Camille Dreyfus Teacher Scholar Award
- Direct For Mathematical & Physical Scien [1005546] Funding Source: National Science Foundation
- Division Of Materials Research [1005546] Funding Source: National Science Foundation
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All-conjugated triblock polyfluorenes with well-defined molecular weights and low polydispersities are synthesized via chain-growth Suzuki-Miyaura polymerization. Ionization of pendant alkylbromide chains by pyridine affords amphiphilic triblock polyelectrolytes with neutral/charged/neutral or charged/neutral/charged segments. The immiscible blocks lead to aggregation in polar and nonpolar solvents, and to complex surface morphologies depending on the polarity of the substrate. These triblock polyelectrolytes can also be used as interfacial layers in polymer light-emitting diodes to facilitate electron injection from aluminum.
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