Poly(dopamine) coated gold nanocluster functionalized electrochemical immunosensor for brominated flame retardants using multienzyme-labeling carbon hollow nanochains as signal amplifiers
Identifieur interne : 000692 ( Main/Repository ); précédent : 000691; suivant : 000693Poly(dopamine) coated gold nanocluster functionalized electrochemical immunosensor for brominated flame retardants using multienzyme-labeling carbon hollow nanochains as signal amplifiers
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Abstract
An electrochemical, signal amplified immunosensor was developed to detect 3-bromobiphenyl (BBP) by using a bio-inspired polydopamine (PDOP)/gold nanocluster (AuNc) as the sensor platform and multienzyme-labeled carbon hollow nanochains as the signal amplifier. The self-polymerized dopamine membrane on the AuNc-modified indium tin oxide (ITO) electrode were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle and electrochemical measurements. Such PDOP/AuNc platform featured the mild cross-linking reaction with the dense immobilization of BBP-antigens (BBP-Ag). Moreover, by using multiple horseradish peroxidase (HRP) and secondary antibodies (Ab2) modified one-dimensional carbon hollow nanochains (CHNc) as the signal enhancer, it held promise for improving the sensitivity and detection limit of the immunoassay. Based on the competitive immunoassay protocol, this immunosensor showed a linear range from 1 pM to 2 nM for BBP with a detection limit of 0.5 pM. Also, it exhibited high sensitivity, wide linear range, acceptable stability and reproducibility on a promising immobilization platform using a novel signal amplifier, which may extend its application in other environmental monitoring.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Poly(dopamine) coated gold nanocluster functionalized electrochemical immunosensor for brominated flame retardants using multienzyme-labeling carbon hollow nanochains as signal amplifiers</title><author><name>MOUHONGLIN</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Biomaterials, College of Sciences, South China Agricultural University</s1><s2>Guangzhou 510642</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Guangzhou 510642</wicri:noRegion></affiliation></author><author><name>YINGJULIU</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Biomaterials, College of Sciences, South China Agricultural University</s1><s2>Guangzhou 510642</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Guangzhou 510642</wicri:noRegion></affiliation></author><author><name>XIAOFENCHEN</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Biomaterials, College of Sciences, South China Agricultural University</s1><s2>Guangzhou 510642</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Guangzhou 510642</wicri:noRegion></affiliation></author><author><name>SHIDONGFEI</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Shenzhen Water Quality Center</s1><s2>Shenzhen 518036</s2><s3>CHN</s3><sZ>4 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Shenzhen Water Quality Center</wicri:noRegion></affiliation></author><author><name>CHUNLINNI</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Biomaterials, College of Sciences, South China Agricultural University</s1><s2>Guangzhou 510642</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Guangzhou 510642</wicri:noRegion></affiliation></author><author><name>YUEPINGFANG</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Biomaterials, College of Sciences, South China Agricultural University</s1><s2>Guangzhou 510642</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Guangzhou 510642</wicri:noRegion></affiliation></author><author><name>CHENGBIN LIU</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University</s1><s2>Changsha 410082</s2><s3>CHN</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Changsha 410082</wicri:noRegion></affiliation></author><author><name>QINGYUN CAI</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University</s1><s2>Changsha 410082</s2><s3>CHN</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Changsha 410082</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">13-0165374</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 13-0165374 INIST</idno><idno type="RBID">Pascal:13-0165374</idno><idno type="wicri:Area/Main/Corpus">000E66</idno><idno type="wicri:Area/Main/Repository">000692</idno></publicationStmt><seriesStmt><idno type="ISSN">0956-5663</idno><title level="j" type="abbreviated">Biosens. bioelectron.</title><title level="j" type="main">Biosensors & bioelectronics</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amplifier</term><term>Carbon</term><term>Dopamine</term><term>Electrochemistry</term><term>Flame retardant</term><term>Gold</term><term>Immunosensor</term><term>Nanostructure</term><term>Tagging</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Dopamine</term><term>Or</term><term>Nanostructure</term><term>Electrochimie</term><term>Immunodétecteur</term><term>Retardateur flamme</term><term>Marquage</term><term>Carbone</term><term>Amplificateur</term></keywords><keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Or</term><term>Carbone</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">An electrochemical, signal amplified immunosensor was developed to detect 3-bromobiphenyl (BBP) by using a bio-inspired polydopamine (PDOP)/gold nanocluster (AuNc) as the sensor platform and multienzyme-labeled carbon hollow nanochains as the signal amplifier. The self-polymerized dopamine membrane on the AuNc-modified indium tin oxide (ITO) electrode were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle and electrochemical measurements. Such PDOP/AuNc platform featured the mild cross-linking reaction with the dense immobilization of BBP-antigens (BBP-Ag). Moreover, by using multiple horseradish peroxidase (HRP) and secondary antibodies (Ab<sub>2</sub>) modified one-dimensional carbon hollow nanochains (CHNc) as the signal enhancer, it held promise for improving the sensitivity and detection limit of the immunoassay. Based on the competitive immunoassay protocol, this immunosensor showed a linear range from 1 pM to 2 nM for BBP with a detection limit of 0.5 pM. Also, it exhibited high sensitivity, wide linear range, acceptable stability and reproducibility on a promising immobilization platform using a novel signal amplifier, which may extend its application in other environmental monitoring.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0956-5663</s0></fA01><fA03 i2="1"><s0>Biosens. bioelectron.</s0></fA03><fA05><s2>45</s2></fA05><fA08 i1="01" i2="1" l="ENG"><s1>Poly(dopamine) coated gold nanocluster functionalized electrochemical immunosensor for brominated flame retardants using multienzyme-labeling carbon hollow nanochains as signal amplifiers</s1></fA08><fA11 i1="01" i2="1"><s1>MOUHONGLIN</s1></fA11><fA11 i1="02" i2="1"><s1>YINGJULIU</s1></fA11><fA11 i1="03" i2="1"><s1>XIAOFENCHEN</s1></fA11><fA11 i1="04" i2="1"><s1>SHIDONGFEI</s1></fA11><fA11 i1="05" i2="1"><s1>CHUNLINNI</s1></fA11><fA11 i1="06" i2="1"><s1>YUEPINGFANG</s1></fA11><fA11 i1="07" i2="1"><s1>CHENGBIN LIU</s1></fA11><fA11 i1="08" i2="1"><s1>QINGYUN CAI</s1></fA11><fA14 i1="01"><s1>Institute of Biomaterials, College of Sciences, South China Agricultural University</s1><s2>Guangzhou 510642</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></fA14><fA14 i1="02"><s1>Shenzhen Water Quality Center</s1><s2>Shenzhen 518036</s2><s3>CHN</s3><sZ>4 aut.</sZ></fA14><fA14 i1="03"><s1>State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University</s1><s2>Changsha 410082</s2><s3>CHN</s3><sZ>7 aut.</sZ><sZ>8 aut.</sZ></fA14><fA20><s1>82-88</s1></fA20><fA21><s1>2013</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>20668</s2><s5>354000173329750140</s5></fA43><fA44><s0>0000</s0><s1>© 2013 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>1/4 p.</s0></fA45><fA47 i1="01" i2="1"><s0>13-0165374</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Biosensors & bioelectronics</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>An electrochemical, signal amplified immunosensor was developed to detect 3-bromobiphenyl (BBP) by using a bio-inspired polydopamine (PDOP)/gold nanocluster (AuNc) as the sensor platform and multienzyme-labeled carbon hollow nanochains as the signal amplifier. The self-polymerized dopamine membrane on the AuNc-modified indium tin oxide (ITO) electrode were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle and electrochemical measurements. Such PDOP/AuNc platform featured the mild cross-linking reaction with the dense immobilization of BBP-antigens (BBP-Ag). Moreover, by using multiple horseradish peroxidase (HRP) and secondary antibodies (Ab<sub>2</sub>) modified one-dimensional carbon hollow nanochains (CHNc) as the signal enhancer, it held promise for improving the sensitivity and detection limit of the immunoassay. Based on the competitive immunoassay protocol, this immunosensor showed a linear range from 1 pM to 2 nM for BBP with a detection limit of 0.5 pM. 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