Ultrasensitive Pb2+ detection based on fluorescence resonance energy transfer (FRET) between quantum dots and gold nanoparticles
文献信息
发布日期
2009-04-01
DOI
10.1039/B822744F
影响因子
4.616
作者
Xin Wang, Xiangqun Guo
查看原文
摘要
Positively charged CdTe-QDs capped with cysteamine (CA-CdTe-QDs) and negatively charged AuNPs capped with 11-mercaptoundecanoic acid (MUA-AuNPs) have been prepared. They are water-soluble and biocompatible. An assay for the determination of Pb2+ has been proposed based on the modulation in FRET efficiency between QDs and AuNPs in the presence of Pb2+, which inhibits the interaction of the QD-AuNP assembly. This method is easy to operate and with remarkably high sensitivity. Under the optimum conditions, the response is linearly proportional to the concentration of Pb2+ in the range 0.22–4.51 ppm, and the detection limit is found to be 30 ppb of Pb2+ due to the superior fluorescence properties of QDs. The mechanism of this strategy is also discussed.
相关文献
Strategies toward improving the performance of fluorescence-based sensors for inorganic anions
Radek Pohl, Dmitry Aldakov, Pavel Kubát, Karolina Jursíková, Manuel Marquez, Pavel Anzenbacher, Jr.
2004-05-10
Communication
DOI: 10.1039/B315268E
Encapsulation of gases in the solid state
Alexander V. Leontiev, Dmitry M. Rudkevich
2004-06-01
Communication
DOI: 10.1039/B402997F
Programmed single step self-assembly of a [2 × 2] grid architecture built on metallic centers of different coordination geometries
Anne Petitjean, Nathalie Kyritsakas, Jean-Marie Lehn
2004-04-23
Communication
DOI: 10.1039/B402854F
Stereospecific peptide folds. A rationally designed molecular bracelet
Soumendra Rana, Bijoy Kundu, Susheel Durani
2004-09-20
Communication
DOI: 10.1039/B410532J
Construction of building-blocks for polyether synthesis using sequential catalytic ring-closing enyne and cross metathesis
J. Stephen Clark, Frédéric Elustondo, Marc C. Kimber
2004-09-24
Communication
DOI: 10.1039/B409067E
Kinetics of chalconeoxidation by peroxide anion catalysed by poly-l-leucine
Giacomo Carrea, Stefano Colonna, Alastair D. Meek, Gianluca Ottolina, Stanley M. Roberts
2004-05-17
Communication
DOI: 10.1039/B401497A
Shape of CeO2nanoparticles using simulated amorphisation and recrystallisation
Thi X. T. Sayle, Stephen C. Parker, Dean C. Sayle
2004-09-21
Communication
DOI: 10.1039/B408752F
Supramolecular complex composed of a covalently linked zinc porphyrin dimer and fulleropyrrolidine bearing two axially coordinating pyridine entities
Francis D'Souza, Suresh Gadde, Melvin E. Zandler, Mitsunari Itou, Yasuyuki Araki, Osamu Ito
2004-09-08
Communication
DOI: 10.1039/B407985J
Shuttling through reversible covalent chemistry
David A. Leigh, Emilio M. Pérez
2004-09-23
Communication
DOI: 10.1039/B412570C
Convenient magnesiation of aromatic and heterocyclic rings bearing a hydroxy group in presence of LiCl
Felix Kopp, Arkady Krasovskiy, Paul Knochel
2004-08-26
Communication
DOI: 10.1039/B409664A
您可能还喜欢
化合物问答
什么是2,6-二溴-4,8-双[(2-乙基己基)氧基]苯并[1,2-b:4,5-b']二噻吩(CAS号：1226782-13-3)？
2,6-二溴-4,8-双[(2-乙基己基)氧基]苯并[1,2-b:4,5-b']二噻吩是一种有机化合物，分子式为C23H32Br2O2S2。该化合物具有芳香性和...
1226782-13-32,6-Dibromo-4,8-bis[...
化合物问答
木聚硫钠(CAS号：37319-17-8)的物理化学性质是什么？
木聚硫钠通常为无色或白色结晶性粉末，具有吸湿性。其分子量约为121.11 g/mol。木聚硫钠易溶于水，不溶于醇类和其他非极性溶剂。在酸性或碱性溶液中，木聚硫钠...
37319-17-8Pentosan
化合物问答
2-甲氧基-4-(三氟甲基)苄溴, JRD(CAS号：886500-59-0)适用哪些法规指南？
该化合物在合成、储存和运输过程中需遵循《全球化学品统一分类和标签制度》(GHS)的健康、环境和物理危险分类。在欧洲还需符合《化学品注册、评估、授权和限制》(RE...
886500-59-02-Methoxy-4-(trifluo...
化合物问答
1,4-Diazoniabicyclo[2.2.2]octane-1,4-disulfinate(CAS号：119752-83-9)的主要用途是什么？
1,4-二氮杂双环[2.2.2]辛烷-1,4-二硫酸二酯主要用于有机合成中的保护基团，特别是在保护胺基和硫醇基方面具有广泛应用。此外，它还用于一些特殊化学反应的...
119752-83-91,4-Diazabicyclo[2.2...
化合物问答
如何处理含有4-(Bromomethyl)-2-fluorobenzenesulphonamide(CAS号：1645275-47-3)的废料？
含有4-(Bromomethyl)-2-fluorobenzenesulphonamide的废液应首先进行中和处理，以降低pH值，避免对环境造成腐蚀性影响。随后...
1645275-47-34-(Bromomethyl)-2-fl...
化合物问答
Loureiriol(CAS号：479195-44-3)的物理化学性质是什么？
Loureiriol是一种天然化合物，其分子式为C15H22O4。Loureiriol为无色结晶性粉末，具有较高的熔点和良好的热稳定性。其相对分子质量为262....
479195-44-3Loureiriol
化合物问答
在合成中是否有3-氨基苯甲酰苯胺(CAS号：14315-16-3)的替代品？
在合成过程中，可以考虑使用类似结构的化合物作为3-氨基苯甲酰苯胺的替代品，例如N-苯基-3-氰基苯胺或N-苯基-3-硝基苯胺等，这些化合物具有相似的化学性质，可...
14315-16-33-Amino-N-phenylbenz...
化合物问答
4-异氰酰苯基硼酸频哪醇酯(CAS号：380430-64-8)的市场或研究趋势如何？
4-异氰酰苯基硼酸频哪醇酯主要应用于有机合成、药物化学和材料科学领域。随着绿色化学的发展，该化合物因其高效的官能团转化能力和环境友好性而受到越来越多的关注。近年...
380430-64-82-(4-Isocyanatopheny...
化合物问答
如何储存3β-乙酰氧基-7,25-甘遂二烯-24(R)-醇(CAS号：1352001-09-2)？
3β-乙酰氧基-7,25-甘遂二烯-24(R)-醇应储存在阴凉、干燥、通风良好的地方，避免直接光照。储存容器应密封，防止空气中的水分和氧气影响化合物的稳定性。建...
1352001-09-23β-acetoxy-eupha- 7,...
化合物问答
如何储存4-氟-2-甲基-1H-吲哚(CAS号：1260383-51-4)？
应将4-氟-2-甲基-1H-吲哚存放在阴凉、干燥、通风良好的地方，避免直接暴露在光照下。容器应密封，避免与空气中的水蒸气接触。建议在避光、温度不超过25℃的环境...
1260383-51-44-Fluoro-2-methyl-1H...
来源期刊
Analyst
CiteScore:
7.8
自引率:
5.6%
年发文量:
653
Analyst publishes analytical and bioanalytical research that reports premier fundamental discoveries and inventions, and the applications of those discoveries, unconfined by traditional discipline barriers.
推荐化合物
![6-(Benzyloxy)-8-(2-bromoacetyl)-2H-benzo[b][1,4]oxazin-3(4H)-one structure](https://cnstatic.chemtradehub.com/structs/926/926319-53-1-2287.webp "6-(Benzyloxy)-8-(2-bromoacetyl)-2H-benzo[b][1,4]oxazin-3(4H)-one structure")
![[(2R)-6,6-Dimethyl-2-morpholinyl]methanol hydrochloride (1:1) structure](https://cnstatic.chemtradehub.com/structs/141/1416444-88-6-e06a.webp "[(2R)-6,6-Dimethyl-2-morpholinyl]methanol hydrochloride (1:1) structure")
推荐供应商
免责声明
本页面提供的学术期刊信息仅供参考和研究使用。我们与任何期刊出版商均无关联，也不处理投稿事宜。如有投稿相关咨询，请直接联系相关期刊出版商。
如发现页面信息有误，请发送邮件至 support@chemtradehub.com 联系我们。我们将及时核实并处理您的问题。