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501
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Lee JS, Mirkin CA. Chip-Based Scanometric Detection of Mercuric Ion Using DNA-Functionalized Gold Nanoparticles. Anal Chem 2008; 80:6805-8. [DOI: 10.1021/ac801046a] [Citation(s) in RCA: 193] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jae-Seung Lee
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Chad A. Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
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502
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Choi MG, Ryu DH, Jeon HL, Cha S, Cho J, Joo HH, Hong KS, Lee C, Ahn S, Chang SK. Chemodosimetric Hg2+-Selective Signaling by Mercuration of Dichlorofluorescein Derivatives. Org Lett 2008; 10:3717-20. [DOI: 10.1021/ol8013446] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Myung Gil Choi
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - De Hun Ryu
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Hye Lim Jeon
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Sunyoung Cha
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Janggeun Cho
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Hyun Hye Joo
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Kwan Soo Hong
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Chulhyun Lee
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Sangdoo Ahn
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
| | - Suk-Kyu Chang
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea, and MRI Team, Korea Basic Science Institute, Ochang, Cheongwon, Chungbuk 363-883, Korea
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503
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Darbha GK, Singh AK, Rai US, Yu E, Yu H, Chandra Ray P. Selective detection of mercury (II) ion using nonlinear optical properties of gold nanoparticles. J Am Chem Soc 2008; 130:8038-43. [PMID: 18517205 DOI: 10.1021/ja801412b] [Citation(s) in RCA: 297] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Contamination of the environment with heavy metal ions has been an important concern throughout the world for decades. Driven by the need to detect trace amounts of mercury in environmental samples, this article demonstrates for the first time that nonlinear optical (NLO) properties of MPA-HCys-PDCA-modified gold nanoparticles can be used for rapid, easy and reliable screening of Hg(II) ions in aqueous solution, with high sensitivity (5 ppb) and selectivity over competing analytes. The hyper Rayleigh scattering (HRS) intensity increases 10 times after the addition of 20 ppm Hg(2+) ions to modified gold nanoparticle solution. The mechanism for HRS intensity change has been discussed in detail using particle size-dependent NLO properties as well as a two-state model. Our results show that the HRS assay for monitoring Hg(II) ions using MPA-HCys-PDCA-modified gold nanoparticles has excellent selectivity over alkali, alkaline earth (Li(+), Na(+), K(+), Mg(2+), Ca(2+)), and transition heavy metal ions (Pb(2+), Pb(+), Mn(2+), Fe(2+), Cu(2+), Ni(2+), Zn(2+), Cd(2+)).
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505
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Ono A, Cao S, Togashi H, Tashiro M, Fujimoto T, Machinami T, Oda S, Miyake Y, Okamoto I, Tanaka Y. Specific interactions between silver(i) ions and cytosine–cytosine pairs in DNA duplexes. Chem Commun (Camb) 2008:4825-7. [DOI: 10.1039/b808686a] [Citation(s) in RCA: 605] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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506
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del Campo O, Carbayo A, Cuevas JV, Muñoz A, García-Herbosa G, Moreno D, Ballesteros E, Basurto S, Gómez T, Torroba T. An organopalladium chromogenic chemodosimeter for the selective naked-eye detection of Hg2+ and MeHg+ in water–ethanol 1 : 1 mixture. Chem Commun (Camb) 2008:4576-8. [DOI: 10.1039/b807670g] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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