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Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies
Nanoassemblies are formed via self-assembly of ZnS capped CdSe quantum dots (QD) and perylene bisimide (PBI) dyes. Upon assembly formation the QD photoluminescence is quenched, as can be detected both via single particle detection and ensemble experiments in solution. Quenching has been assigned to...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2801993/ https://www.ncbi.nlm.nih.gov/pubmed/20054469 http://dx.doi.org/10.3390/ijms10125239 |
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author | Kowerko, Danny Krause, Stefan Amecke, Nicole Abdel-Mottaleb, Mohamed Schuster, Jörg von Borczyskowski, Christian |
author_facet | Kowerko, Danny Krause, Stefan Amecke, Nicole Abdel-Mottaleb, Mohamed Schuster, Jörg von Borczyskowski, Christian |
author_sort | Kowerko, Danny |
collection | PubMed |
description | Nanoassemblies are formed via self-assembly of ZnS capped CdSe quantum dots (QD) and perylene bisimide (PBI) dyes. Upon assembly formation the QD photoluminescence is quenched, as can be detected both via single particle detection and ensemble experiments in solution. Quenching has been assigned to FRET and NON-FRET processes. Analysis of FRET allows for a distinction between different geometries of the QD dye assemblies. Time-resolved single molecule spectroscopy reveals intrinsic fluctuations of the PBI fluorescence lifetime and spectrum, caused by rearrangement of the phenoxy side groups. The distribution of such molecular conformations and their changed dynamics upon assembly formation are discussed in the scope of FRET efficiency and surface ligand density. |
format | Text |
id | pubmed-2801993 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-28019932010-01-06 Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies Kowerko, Danny Krause, Stefan Amecke, Nicole Abdel-Mottaleb, Mohamed Schuster, Jörg von Borczyskowski, Christian Int J Mol Sci Article Nanoassemblies are formed via self-assembly of ZnS capped CdSe quantum dots (QD) and perylene bisimide (PBI) dyes. Upon assembly formation the QD photoluminescence is quenched, as can be detected both via single particle detection and ensemble experiments in solution. Quenching has been assigned to FRET and NON-FRET processes. Analysis of FRET allows for a distinction between different geometries of the QD dye assemblies. Time-resolved single molecule spectroscopy reveals intrinsic fluctuations of the PBI fluorescence lifetime and spectrum, caused by rearrangement of the phenoxy side groups. The distribution of such molecular conformations and their changed dynamics upon assembly formation are discussed in the scope of FRET efficiency and surface ligand density. Molecular Diversity Preservation International (MDPI) 2009-12-01 /pmc/articles/PMC2801993/ /pubmed/20054469 http://dx.doi.org/10.3390/ijms10125239 Text en © 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0 This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Kowerko, Danny Krause, Stefan Amecke, Nicole Abdel-Mottaleb, Mohamed Schuster, Jörg von Borczyskowski, Christian Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies |
title | Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies |
title_full | Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies |
title_fullStr | Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies |
title_full_unstemmed | Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies |
title_short | Identification of Different Donor-Acceptor Structures via Förster Resonance Energy Transfer (FRET) in Quantum-Dot-Perylene Bisimide Assemblies |
title_sort | identification of different donor-acceptor structures via förster resonance energy transfer (fret) in quantum-dot-perylene bisimide assemblies |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2801993/ https://www.ncbi.nlm.nih.gov/pubmed/20054469 http://dx.doi.org/10.3390/ijms10125239 |
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