Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 20, Issue 4, Pages 2438-2443Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp06703h
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Funding
- NSF [1455167]
- NSF REU Award [1460568]
- National Science Foundation [NSF OIA-1632825, DGE-1449999]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1460568] Funding Source: National Science Foundation
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Four organic sensitizers incorporating a cross-conjugated cyclopenta[2,1-b: 3,4-b '] dithiophene (CPDT) pi-bridge have been synthesized. As a result of molecular engineering, broad high energy bands and red shifted absorption maxima and onset is observed relative to a benchmark analogue (C218) using a non-cross-conjugated CPDT pi-bridge. The use of a cross-conjugated bridge allows a new strategy for tuning dye energetics and introduction of increased absorption uniformity by adding additional high-energy absorption bands. These dyes show solar-to-electric conversion up to 800 nm with one derivative exceeding the performance of C218 under identical conditions.
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