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Block Copolymer-Templated Au@CdSe Core-Satellite Nanostructures with Solvent-Dependent Optical Properties.
Singh, Sajan; Kumar, Labeesh; Horechyy, Andriy; Aftenieva, Olha; Mittal, Mona; Sanwaria, Sunita; Srivastava, Rajiv K; König, Tobias A F; Fery, Andreas; Nandan, Bhanu.
Afiliación
  • Singh S; Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi- 110016, India.
  • Kumar L; Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany.
  • Horechyy A; Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany.
  • Aftenieva O; Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany.
  • Mittal M; Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany.
  • Sanwaria S; Department of Chemistry, Galgotia College of Engineering and Technology, Greater Noida, Uttar Pradesh 201310, India.
  • Srivastava RK; Department of Chemistry, Deshbandhu College, University of Delhi, Delhi 110019, India.
  • König TAF; Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi- 110016, India.
  • Fery A; Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany.
  • Nandan B; Technische Universität Dresden, Physical Chemistry of Polymer Materials, 01062 Dresden, Germany.
Langmuir ; 39(17): 6231-6239, 2023 May 02.
Article en En | MEDLINE | ID: mdl-37074843
In the present work, we report the fabrication and characterization of well-defined core-satellite nanostructures. These nanostructures comprise block copolymer (BCP) micelles, containing a single gold nanoparticle (AuNP) in the core and multiple photoluminescent cadmium selenide (CdSe) quantum dots (QDs) attached to the micelle's coronal chains. The asymmetric polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) BCP was employed to develop these core-satellite nanostructures in a series of P4VP-selective alcoholic solvents. The BCP micelles were first prepared in 1-propanol and subsequently mixed with AuNPs, followed by gradual addition of CdSe QDs. This method resulted in the development of spherical micelles that contained a PS/Au core and a P4VP/CdSe shell. These core-satellite nanostructures, developed in different alcoholic solvents, were further employed for the time-resolved photoluminescence analysis. It was found that solvent-selective swelling of the core-satellite nanostructures tunes the distance between the QDs and AuNPs and modulates their Förster resonance energy transfer (FRET) behavior. The average lifetime of the donor emission varied from 12.3 to 10.3 nanoseconds (ns) with the change in the P4VP-selective solvent within the core-satellite nanostructures. Furthermore, the distances between the donor and acceptor were also calculated using efficiency measurements and corresponding Förster distances. The resulting core-satellite nanostructures hold promising potential in various fields, such as photonics, optoelectronics, and sensors that utilize the FRET process.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Langmuir Asunto de la revista: QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Langmuir Asunto de la revista: QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos