dc.contributor.author | Eisele, Dörthe M. | |
dc.contributor.author | Caram, Justin R | |
dc.contributor.author | Doria, Sandra | |
dc.contributor.author | Freyria, Francesca | |
dc.contributor.author | Sinclair, Timothy Scott | |
dc.contributor.author | Bawendi, Moungi G | |
dc.contributor.author | Rebentrost, Frank | |
dc.contributor.author | Lloyd, Seth | |
dc.date.accessioned | 2018-01-30T15:58:02Z | |
dc.date.available | 2018-01-30T15:58:02Z | |
dc.date.issued | 2016-09 | |
dc.date.submitted | 2016-06 | |
dc.identifier.issn | 1530-6984 | |
dc.identifier.issn | 1530-6992 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/113346 | |
dc.description.abstract | We report 1.6 ± 1 μm exciton transport in self-assembled supramolecular light-harvesting nanotubes (LHNs) assembled from amphiphillic cyanine dyes. We stabilize LHNs in a sucrose glass matrix, greatly reducing light and oxidative damage and allowing the observation of exciton–exciton annihilation signatures under weak excitation flux. Fitting to a one-dimensional diffusion model, we find an average exciton diffusion constant of 55 ± 20 cm2/s, among the highest measured for an organic system. We develop a simple model that uses cryogenic measurements of static and dynamic energetic disorder to estimate a diffusion constant of 32 cm2/s, in agreement with experiment. We ascribe large exciton diffusion lengths to low static and dynamic energetic disorder in LHNs. We argue that matrix-stabilized LHNS represent an excellent model system to study coherent excitonic transport.
Keywords: coherent exciton; exciton; exciton delocalization; exciton diffusion; J-aggregate; molecular aggregate | en_US |
dc.description.sponsorship | Eni-MIT Solar Frontiers Center | en_US |
dc.description.sponsorship | United States. Department of Energy. Center for Excitonics (Grant DE-SC0001088) | en_US |
dc.language.iso | en_US | |
dc.publisher | American Chemical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1021/acs.nanolett.6b02529 | en_US |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en_US |
dc.source | Other univ. web domain | en_US |
dc.title | Room-Temperature Micron-Scale Exciton Migration in a Stabilized Emissive Molecular Aggregate | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Caram, Justin R., et al. “Room-Temperature Micron-Scale Exciton Migration in a Stabilized Emissive Molecular Aggregate.” Nano Letters, vol. 16, no. 11, Nov. 2016, pp. 6808–15. © 2016 American Chemical Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Chemistry | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Mechanical Engineering | en_US |
dc.contributor.mitauthor | Caram, Justin R | |
dc.contributor.mitauthor | Doria, Sandra | |
dc.contributor.mitauthor | Freyria, Francesca | |
dc.contributor.mitauthor | Sinclair, Timothy Scott | |
dc.contributor.mitauthor | Bawendi, Moungi G | |
dc.contributor.mitauthor | Rebentrost, Frank | |
dc.contributor.mitauthor | Lloyd, Seth | |
dc.relation.journal | Nano Letters | en_US |
dc.eprint.version | Author's final manuscript | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dspace.orderedauthors | Caram, Justin R.; Doria, Sandra; Eisele, Dörthe M.; Freyria, Francesca S.; Sinclair, Timothy S.; Rebentrost, Patrick; Lloyd, Seth; Bawendi, Moungi G. | en_US |
dspace.embargo.terms | N | en_US |
dc.identifier.orcid | https://orcid.org/0000-0003-1192-4746 | |
dc.identifier.orcid | https://orcid.org/0000-0002-2710-5545 | |
dc.identifier.orcid | https://orcid.org/0000-0002-9371-6109 | |
dc.identifier.orcid | https://orcid.org/0000-0003-2220-4365 | |
dc.identifier.orcid | https://orcid.org/0000-0002-6728-8163 | |
mit.license | PUBLISHER_POLICY | en_US |