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Ohtsuka K, Maekawa I, Waki M, Takenaka S. Electrochemical assay of plasmin activity and its kinetic analysis. Anal Biochem 2009; 385:293-9. [DOI: 10.1016/j.ab.2008.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 11/05/2008] [Accepted: 11/06/2008] [Indexed: 10/21/2022]
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53
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Drexler C, Milne M, Morgan E, Jennings M, Kraatz HB. Synthesis and characterization of new ferrocene peptide conjugates. Dalton Trans 2009:4370-8. [DOI: 10.1039/b817670a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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54
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Moriuchi T, Fujiwara T, Hirao T. β-Turn-structure-assembled palladium complexes by complexation-induced self-organization of ferrocene–dipeptide conjugates. Dalton Trans 2009:4286-8. [DOI: 10.1039/b817652c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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55
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Kerman K, Kraatz HB. Electrochemical probing of HIV enzymes using ferrocene-conjugated peptides on surfaces. Analyst 2009; 134:2400-4. [DOI: 10.1039/b912083a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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56
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N′Dongo HWP, Neundorf I, Merz K, Schatzschneider U. Synthesis, characterization, X-ray crystallography, and cytotoxicity of a cymantrene keto carboxylic acid for IR labelling of bioactive peptides on a solid support. J Inorg Biochem 2008; 102:2114-9. [DOI: 10.1016/j.jinorgbio.2008.07.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2008] [Revised: 07/30/2008] [Accepted: 07/31/2008] [Indexed: 11/15/2022]
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57
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Rich RL, Myszka DG. Survey of the year 2007 commercial optical biosensor literature. J Mol Recognit 2008; 21:355-400. [DOI: 10.1002/jmr.928] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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58
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Bertin PA, Georganopoulou D, Liang T, Eckermann AL, Wunder M, Ahrens MJ, Blackburn GF, Meade TJ. Electroactive self-assembled monolayers on gold via bipodal dithiazepane anchoring groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:9096-9101. [PMID: 18627193 DOI: 10.1021/la801165b] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Novel dithiazepane-functionalized ferrocenyl-phenylethynyl oligomers 1 and 2 have been synthesized. Self-assembled monolayers (SAMs) of these ferrocene derivatives have been studied by X-ray photoelectron spectroscopy, ellipsometry, and cyclic voltammetry. It has been shown by XPS that monolayers of the dithiazepane-anchored molecules on gold electrodes contain gold-thiolate species. Cyclic voltammetry of the SAMs were characteristic of stable electroactive monolayers even for single-component SAMs of 1 and 2, with the more ideal responses recorded for the two-component SAMs diluted with undecanethiol. The small variation in peak splittings at progressively higher scan rates in these SAMs makes dithiazepane-bridged redox species promising candidates for further studies on molecular wires with bipodal anchoring.
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59
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Ciampi S, Le Saux G, Harper J, Gooding J. Optimization of Click Chemistry of Ferrocene Derivatives on Acetylene‐Functionalized Silicon(100) Surfaces. ELECTROANAL 2008. [DOI: 10.1002/elan.200804241] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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60
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Liu G, Paddon-Row MN, Gooding JJ. Protein modulation of electrochemical signals: application to immunobiosensing. Chem Commun (Camb) 2008:3870-2. [PMID: 18726018 DOI: 10.1039/b805668d] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we present a label-free immunobiosensor based on the modulation of amperometric signals of surface bound redox species when immersed in a protein environment which is applicable to either the detection of antibodies or the detection of small molecules such as drugs or pesticides.
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Affiliation(s)
- Guozhen Liu
- School of Chemistry, The University of New South Wales, Sydney, Australia
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61
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Mahmoud KA, Hrapovic S, Luong JHT. Picomolar detection of protease using peptide/single walled carbon nanotube/gold nanoparticle-modified electrode. ACS NANO 2008; 2:1051-1057. [PMID: 19206503 DOI: 10.1021/nn8000774] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Picomolar electrochemical detection of human immunodeficiency virus type-1 protease (HIV-1 PR) using ferrocene (Fc)-pepstatin-modified surfaces has been presented. Gold electrode surface was modified with gold nanoparticles (AuNP) or thiolated single walled carbon nanotubes/gold nanoparticles (SWCNT/AuNP). Thiol-terminated Fc-pepstatin was then self-assembled on such surfaces as confirmed by Raman spectroscopy and scanning electron microscope. The interaction between the Fc-pepstatin-modified substrates and HIV-1 PR was studied by cyclic voltammetry and electrochemical impedance spectroscopy. Both electrode materials showed enhanced electrochemical responses to increasing concentrations of HIV-1 PR with shifting to higher potentials as well as decrease in the overall signal intensity. However, the sensing electrode modified with thiolated SWCNTs/AuNPs showed remarkable detection sensitivity with an estimated detection limit of 0.8 pM.
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Affiliation(s)
- Khaled A Mahmoud
- Biotechnology Research Institute, National Research Council Canada, Montreal, Canada H4P2R2
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62
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Djaković S, Siebler D, Semenčić MČ, Heinze K, Rapić V. Spectroscopic and Theoretical Study of Asymmetric 1,1′-Diaminoferrocene Conjugates of α-Amino Acids. Organometallics 2008. [DOI: 10.1021/om701222e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Senka Djaković
- Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia, and Department of Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Daniel Siebler
- Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia, and Department of Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Mojca Čakić Semenčić
- Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia, and Department of Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Katja Heinze
- Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia, and Department of Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Vladimir Rapić
- Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia, and Department of Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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63
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Hirao T, Moriuchi T, Nagai T, Fujiwara T, Honda N. Simultaneous Formation of Antiparallel b-Sheet-like and Type II b-Turn-like Structures Based on Introduction of Dipeptide Chains with Heterochiral Sequence into Ferrocene Scaffold. HETEROCYCLES 2008. [DOI: 10.3987/com-08-s(n)47] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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64
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Kerman K, Mahmoud KA, Kraatz HB. An electrochemical approach for the detection of HIV-1 protease. Chem Commun (Camb) 2007:3829-31. [DOI: 10.1039/b707140j] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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