Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates
We report narrow-band absorption enhancement of semiconductor nanocrystals via Förster resonance energy transfer from cyanine J-aggregates. These J-aggregated dyes associate electrostatically with short quantum-dot (QD) surface ligands in solution. Energy transfer efficiencies approach unity for thi...
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| Format: | Article |
| Language: | en_US |
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American Chemical Society (ACS)
2013
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| Online Access: | http://hdl.handle.net/1721.1/81988 https://orcid.org/0000-0002-0960-2580 https://orcid.org/0000-0003-2220-4365 |
| _version_ | 1826205694099980288 |
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| author | Walker, Brian J. Nair, Gautham Padmanabhan Marshall, Lisa F. Bawendi, Moungi G. Bulovic, Vladimir |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Walker, Brian J. Nair, Gautham Padmanabhan Marshall, Lisa F. Bawendi, Moungi G. Bulovic, Vladimir |
| author_sort | Walker, Brian J. |
| collection | MIT |
| description | We report narrow-band absorption enhancement of semiconductor nanocrystals via Förster resonance energy transfer from cyanine J-aggregates. These J-aggregated dyes associate electrostatically with short quantum-dot (QD) surface ligands in solution. Energy transfer efficiencies approach unity for this light sensitization and result in a 5-fold enhancement in the QD excitation near the J-aggregate absorption maximum. Because a thin layer of J-aggregates attenuates the same amount of light (at peak absorbance) as a far thicker film of monomer dye, these absorption-enhanced materials may have applications in light-sensitizing applications such as photodetection and optical down-conversion. |
| first_indexed | 2024-09-23T13:17:25Z |
| format | Article |
| id | mit-1721.1/81988 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:17:25Z |
| publishDate | 2013 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/819882022-09-28T13:10:46Z Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates Walker, Brian J. Nair, Gautham Padmanabhan Marshall, Lisa F. Bawendi, Moungi G. Bulovic, Vladimir Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Microsystems Technology Laboratories Walker, Brian J. Nair, Gautham Padmanabhan Marshall, Lisa F. Bulovic, Vladimir Bawendi, Moungi G. We report narrow-band absorption enhancement of semiconductor nanocrystals via Förster resonance energy transfer from cyanine J-aggregates. These J-aggregated dyes associate electrostatically with short quantum-dot (QD) surface ligands in solution. Energy transfer efficiencies approach unity for this light sensitization and result in a 5-fold enhancement in the QD excitation near the J-aggregate absorption maximum. Because a thin layer of J-aggregates attenuates the same amount of light (at peak absorbance) as a far thicker film of monomer dye, these absorption-enhanced materials may have applications in light-sensitizing applications such as photodetection and optical down-conversion. American Society for Engineering Education. National Defense Science and Engineering Graduate Fellowship National Science Foundation (U.S.) (Massachusetts Institute of Technology. Biophysical Instrumentation Facility NSF-0070319) National Institutes of Health (U.S.) (Massachusetts Institute of Technology. Biophysical Instrumentation Facility NIH GM68762) Massachusetts Institute of Technology. Dept. of Chemistry Instrumentation Facility (CHE-980806) Massachusetts Institute of Technology. Dept. of Chemistry Instrumentation Facility (DBI-9729592) Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies (W911NF-07-D-0004) National Science Foundation (U.S.). Materials Research Science and Engineering Centers (Program) (DMR-0819762) United States. Dept. of Energy. Office of Basic Energy Sciences (DE-FG02-07ER46454) Chesonis Family Foundation 2013-11-04T19:54:44Z 2013-11-04T19:54:44Z 2009-06 2009-04 Article http://purl.org/eprint/type/JournalArticle 0002-7863 1520-5126 http://hdl.handle.net/1721.1/81988 Walker, Brian J., Gautham P. Nair, Lisa F. Marshall, Vladimir Bulović, and Moungi G. Bawendi. “Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates.” Journal of the American Chemical Society 131, no. 28 (July 22, 2009): 9624-9625. https://orcid.org/0000-0002-0960-2580 https://orcid.org/0000-0003-2220-4365 en_US http://dx.doi.org/10.1021/ja902813q Journal of the American Chemical Society 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 Chemical Society (ACS) PMC |
| spellingShingle | Walker, Brian J. Nair, Gautham Padmanabhan Marshall, Lisa F. Bawendi, Moungi G. Bulovic, Vladimir Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates |
| title | Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates |
| title_full | Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates |
| title_fullStr | Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates |
| title_full_unstemmed | Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates |
| title_short | Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates |
| title_sort | narrow band absorption enhanced quantum dot j aggregate conjugates |
| url | http://hdl.handle.net/1721.1/81988 https://orcid.org/0000-0002-0960-2580 https://orcid.org/0000-0003-2220-4365 |
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