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Controlled synthesis of CdSe and CdSe/CdS core/shell nanoparticles using Gemini surfactant Py-16-10-16 and their bioconjugates with BSA

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Abstract.
CdSe and CdSe/CdS core/shell nanoparticles (NPs) were synthesized by using Gemini surfactant, 1,10-
bis(a-hexadecyl pyridine) decamethylene dibromide (abbreviated Py-16-10-16), as a soft template. Subsequent
analysis revealed that the as-synthesized CdSe NPs and CdSe/CdS core/shell NPs were highly
luminescent with quantum yields of 18% and 35%, respectively, compared with Rhodamine 6G (95%). Furthermore,
when the nanoparticles were conjugated with bovine serum albumin (BSA) in PBS buffer solution
(pH 7.40), the fluorescence intensity of the BSA system was quenched by the addition of CdSe/TGA or
CdSe/CdS/TGA NPs, while the fluorescence intensities of CdSe/TGA and CdSe/CdS/TGA NPs were enhanced
by the addition of BSA. This enhancement and quenching of the fluorescence intensity by conjugating
with BSA could be used to determine the albumin concentration.

Keywords:
CdSe
CdSe/CdS
Gemini surfactant
Controlled synthesis
Fluorescence enhancing/quenching

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Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 335 (2009) 257–263

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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