A Complex Comprising a Cyanine Dye Rotaxane and a Porphyrin Nanoring as a Model Light-Harvesting System.
Angew Chem Int Ed Engl
; 59(38): 16455-16458, 2020 09 14.
Article
em En
| MEDLINE
| ID: mdl-32558120
ABSTRACT
A nanoring-rotaxane supramolecular assembly with a Cy7 cyanine dye (hexamethylindotricarbocyanine) threaded along the axis of the nanoring was synthesized as a model for the energy transfer between the light-harvesting complex LH1 and the reaction center in purple bacteria photosynthesis. The complex displays efficient energy transfer from the central cyanine dye to the surrounding zinc porphyrin nanoring. We present a theoretical model that reproduces the absorption spectrum of the nanoring and quantifies the excitonic coupling between the nanoring and the central dye, thereby explaining the efficient energy transfer and demonstrating similarity with structurally related natural light-harvesting systems.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Porfirinas
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Carbocianinas
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Rotaxanos
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Complexos de Proteínas Captadores de Luz
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Corantes
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Nanopartículas
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article