Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots
We measure the anomalous spectral diffusion of single colloidal quantum dots over eight temporal decades simultaneously by combining single-molecule spectroscopy and photon-correlation Fourier spectroscopy. Our technique distinguishes between discrete and continuous dynamics and directly reveals tha...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2014
|
| Online Access: | http://hdl.handle.net/1721.1/84957 https://orcid.org/0000-0003-2220-4365 https://orcid.org/0000-0002-5613-8928 |
| _version_ | 1826195766926901248 |
|---|---|
| author | Marshall, Lisa F. Cui, Jian Brokmann, Xavier Bawendi, Moungi G. Beyler, Andrew Paul |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Marshall, Lisa F. Cui, Jian Brokmann, Xavier Bawendi, Moungi G. Beyler, Andrew Paul |
| author_sort | Marshall, Lisa F. |
| collection | MIT |
| description | We measure the anomalous spectral diffusion of single colloidal quantum dots over eight temporal decades simultaneously by combining single-molecule spectroscopy and photon-correlation Fourier spectroscopy. Our technique distinguishes between discrete and continuous dynamics and directly reveals that the quasicontinuous spectral diffusion observed using conventional spectroscopy is composed of rapid, discrete spectral jumps. Despite their multiple time scales, these dynamics can be captured by a single mechanism whose parameters vary widely between dots and over time in individual dots. |
| first_indexed | 2024-09-23T10:15:07Z |
| format | Article |
| id | mit-1721.1/84957 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:15:07Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/849572022-09-26T16:45:15Z Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots Marshall, Lisa F. Cui, Jian Brokmann, Xavier Bawendi, Moungi G. Beyler, Andrew Paul Massachusetts Institute of Technology. Department of Chemistry Beyler, Andrew Paul Marshall, Lisa F. Cui, Jian Brokmann, Xavier Bawendi, Moungi G. We measure the anomalous spectral diffusion of single colloidal quantum dots over eight temporal decades simultaneously by combining single-molecule spectroscopy and photon-correlation Fourier spectroscopy. Our technique distinguishes between discrete and continuous dynamics and directly reveals that the quasicontinuous spectral diffusion observed using conventional spectroscopy is composed of rapid, discrete spectral jumps. Despite their multiple time scales, these dynamics can be captured by a single mechanism whose parameters vary widely between dots and over time in individual dots. United States. Dept. of Energy. Office of Basic Energy Sciences (DE-FG02-07ER46454) National Science Foundation (U.S.). Graduate Research Fellowship Program 2014-02-14T17:29:46Z 2014-02-14T17:29:46Z 2013-10 2013-01 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/84957 Beyler, Andrew P., Lisa F. Marshall, Jian Cui, Xavier Brokmann, and Moungi G. Bawendi. “Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots.” Physical Review Letters 111, no. 17 (October 2013). © 2013 American Physical Society https://orcid.org/0000-0003-2220-4365 https://orcid.org/0000-0002-5613-8928 en_US http://dx.doi.org/10.1103/PhysRevLett.111.177401 Physical Review Letters 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. application/pdf American Physical Society American Physical Society |
| spellingShingle | Marshall, Lisa F. Cui, Jian Brokmann, Xavier Bawendi, Moungi G. Beyler, Andrew Paul Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots |
| title | Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots |
| title_full | Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots |
| title_fullStr | Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots |
| title_full_unstemmed | Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots |
| title_short | Direct Observation of Rapid Discrete Spectral Dynamics in Single Colloidal CdSe-CdS Core-Shell Quantum Dots |
| title_sort | direct observation of rapid discrete spectral dynamics in single colloidal cdse cds core shell quantum dots |
| url | http://hdl.handle.net/1721.1/84957 https://orcid.org/0000-0003-2220-4365 https://orcid.org/0000-0002-5613-8928 |
| work_keys_str_mv | AT marshalllisaf directobservationofrapiddiscretespectraldynamicsinsinglecolloidalcdsecdscoreshellquantumdots AT cuijian directobservationofrapiddiscretespectraldynamicsinsinglecolloidalcdsecdscoreshellquantumdots AT brokmannxavier directobservationofrapiddiscretespectraldynamicsinsinglecolloidalcdsecdscoreshellquantumdots AT bawendimoungig directobservationofrapiddiscretespectraldynamicsinsinglecolloidalcdsecdscoreshellquantumdots AT beylerandrewpaul directobservationofrapiddiscretespectraldynamicsinsinglecolloidalcdsecdscoreshellquantumdots |