Document Detail


Synthesis of Multi-Fullerenes Encapsulated Palladium Nanocage, and Its Application in Electrochemiluminescence Immunosensors for the Detection of Streptococcus suis Serotype 2.
MedLine Citation:
PMID:  24554632     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A novel functionalized material is synthesized using surface-decorated fullerene (C60 ) to encapsulate hollow and porous palladium nanocages (PdNCs), and is applied to fabricate an electrochemiluminescence (ECL) immunosensor for the detection of Streptococcus suis Serotype 2 (SS2). PdNCs with hollow interiors and porous walls are prepared using a galvanic replacement reaction between silver nanocubes and metal precursor salts. Then, C60 reacts with l-cysteine (l-Cys) to form l-Cys functionalized C60 (C60 -l-Cys), which has a better biocompatibility, conductivity, and hydrophilicity compared to C60 and possesses abundant -SH groups on the surface. Because of the special interaction between -SH and PdNCs, the obtained C60 -l-Cys is adsorbed around the PdNCs to form an interesting structure with multiple spheres encapsulating the cage. The resultant functionalized material (C60 -L-Cys-PdNCs) has a high specific surface area, good electrocatalytic ability, and efficient photocatalytic activity, and is used to construct an ECL immunosensor for the detection of SS2. The ECL signal amplified strategy is performed by using the novel coreactant (C60 -l-Cys) and in situ generation of O2 thus creating the S2 O8 (2-) -O2 ECL system. As a result, a wide linear detection range of 0.1 pg mL(-1) to 100 ng mL(-1) is acquired with a relatively low detection limit of 33.3 fg mL(-1) .
Authors:
Haijun Wang; Lijuan Bai; Yaqin Chai; Ruo Yuan
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-2-19
Journal Detail:
Title:  Small (Weinheim an der Bergstrasse, Germany)     Volume:  -     ISSN:  1613-6829     ISO Abbreviation:  Small     Publication Date:  2014 Feb 
Date Detail:
Created Date:  2014-2-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101235338     Medline TA:  Small     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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