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Ultrafast coherence transfer in DNA-templated silver nanoclusters.

ABSTRACT: DNA-templated silver nanoclusters of a few tens of atoms or less have come into prominence over the last several years due to very strong absorption and efficient emission. Applications in microscopy and sensing have already been realized, however little is known about the excited-state structure and dynamics in these clusters. Here we report on a multidimensional spectroscopy investigation of the energy-level structure and the early-time relaxation cascade, which eventually results in the population of an emitting state. We find that the ultrafast intramolecular relaxation is strongly coupled to a specific vibrational mode, resulting in the concerted transfer of population and coherence between excited states on a sub-100?fs timescale.

SUBMITTER: Thyrhaug E

PROVIDER: S-EPMC5493596 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Ultrafast coherence transfer in DNA-templated silver nanoclusters.

Thyrhaug Erling E Bogh Sidsel Ammitzbøll SA Carro-Temboury Miguel R MR Madsen Charlotte Stahl CS Vosch Tom T Zigmantas Donatas D

Nature communications 20170526

DNA-templated silver nanoclusters of a few tens of atoms or less have come into prominence over the last several years due to very strong absorption and efficient emission. Applications in microscopy and sensing have already been realized, however little is known about the excited-state structure and dynamics in these clusters. Here we report on a multidimensional spectroscopy investigation of the energy-level structure and the early-time relaxation cascade, which eventually results in the popul ...[more]

PMID: 28548085

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