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1
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Sato K, Hosokawa K, Maeda M. Characterizing the non-crosslinked aggregation of DNA-modified gold nanoparticles: effects of DNA length and terminal base pair. Analyst 2020; 144:5580-5588. [PMID: 31418003 DOI: 10.1039/c9an00822e] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We previously reported that fully complementary DNA duplexes formed on gold nanoparticle (GNP) surfaces aggregate at high salt concentrations. We previously reported that DNA-functionalized gold nanoparticles (GNPs) aggregate by hybridization with fully complementary DNA at high salt concentrations. Although this behavior has been applied to some precise naked-eye colorimetric analyses of DNA-related molecules, the aggregation mechanism is still unclear and comprehensive studies are needed. In this paper, we reveal the key factors that influence GNP aggregation. The effects of temperature, electrolyte concentration, probe length, and particle size, which control the stabilities of double-stranded DNAs and GNPs, were investigated. Larger GNPs aggregated more easily, and GNP aggregates were easily formed with ∼15-mer-long probes, while longer probes prevented aggregation, perhaps by preventing the formation of rigid double-stranded DNA layers, compared to shorter probes. Furthermore, GNPs with purine bases at their 5' ends aggregated more easily than those with these bases at their 3' ends. This phenomenon is different from that based on the melting-temperature trend calculated using the nearest-neighbor method.
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Affiliation(s)
- Kae Sato
- Department of Chemical and Biological Sciences, Faculty of Science, Japan Women's University, Bunkyo, Tokyo 112-8681, Japan.
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2
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Analysis of ofloxacin in ofloxacin ear drops by microfluidic chip coupled with contactless conductivity detection. Methods Mol Biol 2015; 1274:53-64. [PMID: 25673482 DOI: 10.1007/978-1-4939-2353-3_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
A method using a microfluidic chip coupled with contactless conductivity detection (C(4)D) is demonstrated for the determination of ofloxacin in Ofloxacin Ear Drops. Settings, optimizing procedures, electrophoresis conditions, regression equations, and the average recovery rate are discussed. Under optimum conditions, the determination of ofloxacin in standard solution is achieved within 1 min, which allows detection of ofloxacin in Ofloxacin Ear Drops. The demonstrated method is rapid, high efficient, sensitive, and economical.
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Young RM, Singh APN, Thazhathveetil AK, Cho VY, Zhang Y, Renaud N, Grozema FC, Beratan DN, Ratner MA, Schatz GC, Berlin YA, Lewis FD, Wasielewski MR. Charge Transport across DNA-Based Three-Way Junctions. J Am Chem Soc 2015; 137:5113-22. [DOI: 10.1021/jacs.5b00931] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ryan M. Young
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
- Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - Arunoday P. N. Singh
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - Arun K. Thazhathveetil
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - Vincent Y. Cho
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - Yuqi Zhang
- Departments
of Chemistry, Biochemistry, and Physics, Duke University
, Durham, North Carolina
27708, United States
| | - Nicolas Renaud
- DelftChemTech, Delft University of Technology
, Julianalaan 136, 2628 BL
Delft, The Netherlands
| | - Ferdinand C. Grozema
- DelftChemTech, Delft University of Technology
, Julianalaan 136, 2628 BL
Delft, The Netherlands
| | - David N. Beratan
- Departments
of Chemistry, Biochemistry, and Physics, Duke University
, Durham, North Carolina
27708, United States
| | - Mark A. Ratner
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - George C. Schatz
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - Yuri A. Berlin
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - Frederick D. Lewis
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
| | - Michael R. Wasielewski
- Department
of Chemistry, Northwestern University
, Evanston, Illinois
60208-3113, United States
- Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University
, Evanston, Illinois
60208-3113, United States
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4
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Chen B, Mai Q, Chen Q. DETERMINATION OF OFLOXACIN IN OFLOXACIN EAR DROPS BY MICROFLUIDIC CHIP WITH CONTACTLESS CONDUCTIVITY DETECTION. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.778638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Bing Chen
- a College of Chemistry and Technology, Zhanjiang Normal University , Zhanjiang , P. R. China
- b Development Center for New Materials Engineering & Technology in Universities of Guangdong , Zhanjiang , P. R. China
| | - Qihong Mai
- a College of Chemistry and Technology, Zhanjiang Normal University , Zhanjiang , P. R. China
| | - Qiumei Chen
- a College of Chemistry and Technology, Zhanjiang Normal University , Zhanjiang , P. R. China
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5
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Lewis FD. Distance-Dependent Electronic Interactions Across DNA Base Pairs: Charge Transport, Exciton Coupling, and Energy Transfer. Isr J Chem 2013. [DOI: 10.1002/ijch.201300035] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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6
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Patwardhan S, Tonzani S, Lewis FD, Siebbeles LDA, Schatz GC, Grozema FC. Effect of Structural Dynamics and Base Pair Sequence on the Nature of Excited States in DNA Hairpins. J Phys Chem B 2012; 116:11447-58. [DOI: 10.1021/jp307146u] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Sameer Patwardhan
- Opto-Electronic Materials Section,
Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL, Delft, The
Netherlands
- Department
of Chemistry, Center
for Nanofabrication and Molecular Self-Assembly, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113,
United States
| | - Stefano Tonzani
- Department
of Chemistry, Center
for Nanofabrication and Molecular Self-Assembly, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113,
United States
| | - Frederick D. Lewis
- Department
of Chemistry, Center
for Nanofabrication and Molecular Self-Assembly, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113,
United States
| | - Laurens D. A. Siebbeles
- Opto-Electronic Materials Section,
Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL, Delft, The
Netherlands
| | - George C. Schatz
- Department
of Chemistry, Center
for Nanofabrication and Molecular Self-Assembly, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113,
United States
| | - Ferdinand C. Grozema
- Opto-Electronic Materials Section,
Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL, Delft, The
Netherlands
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7
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Carmieli R, Smeigh AL, Mickley Conron SM, Thazhathveetil AK, Fuki M, Kobori Y, Lewis FD, Wasielewski MR. Structure and Dynamics of Photogenerated Triplet Radical Ion Pairs in DNA Hairpin Conjugates with Anthraquinone End Caps. J Am Chem Soc 2012; 134:11251-60. [DOI: 10.1021/ja303721j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Raanan Carmieli
- Department of Chemistry and Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Amanda L. Smeigh
- Department of Chemistry and Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Sarah M. Mickley Conron
- Department of Chemistry and Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Arun K. Thazhathveetil
- Department of Chemistry and Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Masaaki Fuki
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya Surugaku, Shizuoka 422-8529,
Japan
| | - Yasuhiro Kobori
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya Surugaku, Shizuoka 422-8529,
Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho
Kawaguchi, Saitama 332-0012, Japan
| | - Frederick D. Lewis
- Department of Chemistry and Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Michael R. Wasielewski
- Department of Chemistry and Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
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8
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Daublain P, Thazhathveetil AK, Wang Q, Trifonov A, Fiebig T, Lewis FD. Dynamics of Photochemical Electron Injection and Efficiency of Electron Transport in DNA. J Am Chem Soc 2009. [DOI: 10.1021/ja905140n] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pierre Daublain
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Arun K. Thazhathveetil
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Qiang Wang
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Anton Trifonov
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Torsten Fiebig
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Frederick D. Lewis
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
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9
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Siegmund K, Daublain P, Wang Q, Trifonov A, Fiebig T, Lewis FD. Structure and Photoinduced Electron Transfer in DNA Hairpin Conjugates Possessing a Tethered 5′-Pyrenecarboxamide. J Phys Chem B 2009; 113:16276-84. [DOI: 10.1021/jp907323d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Karsten Siegmund
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Pierre Daublain
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Qiang Wang
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Anton Trifonov
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Torsten Fiebig
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
| | - Frederick D. Lewis
- Departments of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, and Boston College, Chestnut Hill, Massachusetts 02467
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10
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Daublain P, Siegmund K, Hariharan M, Vura-Weis J, Wasielewski MR, Lewis FD, Shafirovich V, Wang Q, Raytchev M, Fiebig T. Photoinduced charge separation in pyrenedicarboxamide-linked DNA hairpins. Photochem Photobiol Sci 2008; 7:1501-8. [DOI: 10.1039/b813995d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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A review of the recent achievements in capacitively coupled contactless conductivity detection. Anal Chim Acta 2008; 607:15-29. [DOI: 10.1016/j.aca.2007.11.045] [Citation(s) in RCA: 215] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Revised: 11/22/2007] [Accepted: 11/27/2007] [Indexed: 11/21/2022]
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