Metal-Enhanced Fluorescence of Pseudoisocyanine J‑Aggregates Formed in Layer-by-Layer Assembled Films
A formation of pseudoisocyanine (PIC) dye J-aggregates in the polyelectrolyte film by the layer-by-layer (LbL) assembly method has been studied. It has been shown that this process leads to significant J-band widening and fluorescence quenching as a result of increasing static disorder. To enhance t...
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| Veröffentlicht in: | Journal of physical chemistry. C 2015-02, Vol.119 (5), p.2743-2751 |
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| container_issue | 5 |
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| container_title | Journal of physical chemistry. C |
| container_volume | 119 |
| creator | Sorokin, Alexander V Zabolotskii, Alexander A Pereverzev, Nikita V Bespalova, Irina I Yefimova, Svetlana L Malyukin, Yury V Plekhanov, Alexander I |
| description | A formation of pseudoisocyanine (PIC) dye J-aggregates in the polyelectrolyte film by the layer-by-layer (LbL) assembly method has been studied. It has been shown that this process leads to significant J-band widening and fluorescence quenching as a result of increasing static disorder. To enhance the J-aggregate fluorescence properties, the effect of J-aggregate interaction with plasmon resonances of gold nanoparticles has been used. It is found that the maximal 8-fold fluorescence enhancement for PIC J-aggregates in the LbL films could be achieved at 16 nm distance between Au nanoparticles (NPs) and the J-aggregates. Plasmon influence on the J-aggregate fluorescence has been analyzed using a two-level system in the local plasmon field approximation. The model gives a good correlation with the experimental results and could be used for further studying the exciton–plasmon interaction in J-aggregates. |
| doi_str_mv | 10.1021/jp5102626 |
| format | Article |
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It has been shown that this process leads to significant J-band widening and fluorescence quenching as a result of increasing static disorder. To enhance the J-aggregate fluorescence properties, the effect of J-aggregate interaction with plasmon resonances of gold nanoparticles has been used. It is found that the maximal 8-fold fluorescence enhancement for PIC J-aggregates in the LbL films could be achieved at 16 nm distance between Au nanoparticles (NPs) and the J-aggregates. Plasmon influence on the J-aggregate fluorescence has been analyzed using a two-level system in the local plasmon field approximation. 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C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sorokin, Alexander V</au><au>Zabolotskii, Alexander A</au><au>Pereverzev, Nikita V</au><au>Bespalova, Irina I</au><au>Yefimova, Svetlana L</au><au>Malyukin, Yury V</au><au>Plekhanov, Alexander I</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Metal-Enhanced Fluorescence of Pseudoisocyanine J‑Aggregates Formed in Layer-by-Layer Assembled Films</atitle><jtitle>Journal of physical chemistry. C</jtitle><addtitle>J. Phys. Chem. C</addtitle><date>2015-02-05</date><risdate>2015</risdate><volume>119</volume><issue>5</issue><spage>2743</spage><epage>2751</epage><pages>2743-2751</pages><issn>1932-7447</issn><eissn>1932-7455</eissn><abstract>A formation of pseudoisocyanine (PIC) dye J-aggregates in the polyelectrolyte film by the layer-by-layer (LbL) assembly method has been studied. It has been shown that this process leads to significant J-band widening and fluorescence quenching as a result of increasing static disorder. To enhance the J-aggregate fluorescence properties, the effect of J-aggregate interaction with plasmon resonances of gold nanoparticles has been used. It is found that the maximal 8-fold fluorescence enhancement for PIC J-aggregates in the LbL films could be achieved at 16 nm distance between Au nanoparticles (NPs) and the J-aggregates. Plasmon influence on the J-aggregate fluorescence has been analyzed using a two-level system in the local plasmon field approximation. The model gives a good correlation with the experimental results and could be used for further studying the exciton–plasmon interaction in J-aggregates.</abstract><pub>American Chemical Society</pub><doi>10.1021/jp5102626</doi><tpages>9</tpages></addata></record> |
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| title | Metal-Enhanced Fluorescence of Pseudoisocyanine J‑Aggregates Formed in Layer-by-Layer Assembled Films |
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