Directing energy transfer in discrete one-dimensional oligonucleotide-templated assemblies.
Chem Commun (Camb) 47:3 (2011) 884-886
Abstract:
Monodisperse DNA-templated one dimensional dye assemblies have been constructed in which the energy transfer can be directed. Fluorescence experiments suggest an optimum transfer efficiency for stacks of 30 bases long.Ultrafast charge separation at a polymer-single-walled carbon nanotube molecular junction.
Nano Lett 11:1 (2011) 66-72
Abstract:
We have investigated the charge photogeneration dynamics at the interface formed between single-walled carbon nanotubes (SWNTs) and poly(3-hexylthiophene) (P3HT) using a combination of femtosecond spectroscopic techniques. We demonstrate that photoexcitation of P3HT forming a single molecular layer around a SWNT leads to an ultrafast (∼430 fs) charge transfer between the materials. The addition of excess P3HT leads to long-term charge separation in which free polarons remain separated at room temperature. Our results suggest that SWNT-P3HT blends incorporating only small fractions (1%) of SWNTs allow photon-to-charge conversion with efficiencies comparable to those for conventional (60:40) P3HT-fullerene blends, provided that small-diameter tubes are individually embedded in the P3HT matrix.Energy Transfer in Single-Stranded DNA-Templated Stacks of Naphthalene Chromophores
JOURNAL OF PHYSICAL CHEMISTRY C 115:21 (2011) 10550-10560
Surface Energy Relay Between Cosensitized Molecules in Solid-State Dye-Sensitized Solar Cells
JOURNAL OF PHYSICAL CHEMISTRY C 115:46 (2011) 23204-23208
Ultrafast Charge Separation at a Single-walled Carbon Nanotube – Polymer Interface
MRS Advances Springer Nature 1286:1 (2011) 207