Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 9, Issue 13, Pages 3654-3659Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.8b00931
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Funding
- NISE initiative
- NRL Nanosciences Institute
- LUCI project through the OSD
- George Mason University Presidential Scholar Fellowship Program
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Molecular photonic wires (MPWs) are tunable nanophotonic structures capable of capturing and directing light with high transfer efficiencies. DNA-based assembly techniques provide a simple and economical preparation method for MPWs that allows precise positioning of the molecular transfer components. Unfortunately, the longest DNA-based MPWs (similar to 30 nm) report only modest transfer efficiencies of similar to 2% and have not been demonstrated on solid-state platforms. Here, we demonstrate that DNA based MPWs can be spin-coated in a polymer matrix onto silicon wafers and exhibit a 5-fold increase in photonic transfer efficiency over solution-phase MPWs. Cooling these MPWs to 5 K led to further efficiency increases ranging from similar to 40 to 240% depending on the length of the MPW. The improvement of MPW energy transport efficiencies advances prospects for their incorporation in a variety of optoelectronics technologies and makes them an ideal test bed for further exploration of nanoscale energy transfer.
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