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Showing 1 to 11 of 11 entries
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Versatile Polymer-Free Graphene Transfer Method and Applications.

ACS applied materials & interfaces

Zhang G, Güell AG, Kirkman PM, Lazenby RA, Miller TS, Unwin PR.
PMID: 26953499
ACS Appl Mater Interfaces. 2016 Mar;8(12):8008-16. doi: 10.1021/acsami.6b00681. Epub 2016 Mar 18.

A new method for transferring chemical vapor deposition (CVD)-grown monolayer graphene to a variety of substrates is described. The method makes use of an organic/aqueous biphasic configuration, avoiding the use of any polymeric materials that can cause severe contamination...

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Zhang G, Güell AG, Kirkman PM, et al. Versatile Polymer-Free Graphene Transfer Method and Applications. ACS Appl Mater Interfaces. 2016;8(12):8008-16doi: 10.1021/acsami.6b00681.
Zhang, G., Güell, A. G., Kirkman, P. M., Lazenby, R. A., Miller, T. S., & Unwin, P. R. (2016). Versatile Polymer-Free Graphene Transfer Method and Applications. ACS applied materials & interfaces, 8(12), 8008-16. https://doi.org/10.1021/acsami.6b00681
Zhang, Guohui, et al. "Versatile Polymer-Free Graphene Transfer Method and Applications." ACS applied materials & interfaces vol. 8,12 (2016): 8008-16. doi: https://doi.org/10.1021/acsami.6b00681
Zhang G, Güell AG, Kirkman PM, Lazenby RA, Miller TS, Unwin PR. Versatile Polymer-Free Graphene Transfer Method and Applications. ACS Appl Mater Interfaces. 2016 Mar;8(12):8008-16. doi: 10.1021/acsami.6b00681. Epub 2016 Mar 18. PMID: 26953499.
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Impact of Adsorption on Scanning Electrochemical Microscopy Voltammetry and Implications for Nanogap Measurements.

Analytical chemistry

Tan SY, Zhang J, Bond AM, Macpherson JV, Unwin PR.
PMID: 26877069
Anal Chem. 2016 Mar 15;88(6):3272-80. doi: 10.1021/acs.analchem.5b04715. Epub 2016 Feb 26.

Scanning electrochemical microscopy (SECM) is a powerful tool that enables quantitative measurements of fast electron transfer (ET) kinetics when coupled with modeling predictions from finite-element simulations. However, the advent of nanoscale and nanogap electrode geometries that have an intrinsically...

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Tan SY, Zhang J, Bond AM, et al. Impact of Adsorption on Scanning Electrochemical Microscopy Voltammetry and Implications for Nanogap Measurements. Anal Chem. 2016;88(6):3272-80doi: 10.1021/acs.analchem.5b04715.
Tan, S. Y., Zhang, J., Bond, A. M., Macpherson, J. V., & Unwin, P. R. (2016). Impact of Adsorption on Scanning Electrochemical Microscopy Voltammetry and Implications for Nanogap Measurements. Analytical chemistry, 88(6), 3272-80. https://doi.org/10.1021/acs.analchem.5b04715
Tan, Sze-yin, et al. "Impact of Adsorption on Scanning Electrochemical Microscopy Voltammetry and Implications for Nanogap Measurements." Analytical chemistry vol. 88,6 (2016): 3272-80. doi: https://doi.org/10.1021/acs.analchem.5b04715
Tan SY, Zhang J, Bond AM, Macpherson JV, Unwin PR. Impact of Adsorption on Scanning Electrochemical Microscopy Voltammetry and Implications for Nanogap Measurements. Anal Chem. 2016 Mar 15;88(6):3272-80. doi: 10.1021/acs.analchem.5b04715. Epub 2016 Feb 26. PMID: 26877069.
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Electrodeposition and Screening of Photoelectrochemical Activity in Conjugated Polymers Using Scanning Electrochemical Cell Microscopy.

Langmuir : the ACS journal of surfaces and colloids

Aaronson BD, Garoz-Ruiz J, Byers JC, Colina A, Unwin PR.
PMID: 26502089
Langmuir. 2015 Nov 24;31(46):12814-22. doi: 10.1021/acs.langmuir.5b03316. Epub 2015 Nov 10.

A number of renewable energy systems require an understanding and correlation of material properties and photoelectrochemical activity on the micro to nanoscale. Among these, conducting polymer electrodes continue to be important materials. In this contribution, an ultrasensitive scanning electrochemical...

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Aaronson BD, Garoz-Ruiz J, Byers JC, et al. Electrodeposition and Screening of Photoelectrochemical Activity in Conjugated Polymers Using Scanning Electrochemical Cell Microscopy. Langmuir. 2015;31(46):12814-22doi: 10.1021/acs.langmuir.5b03316.
Aaronson, B. D., Garoz-Ruiz, J., Byers, J. C., Colina, A., & Unwin, P. R. (2015). Electrodeposition and Screening of Photoelectrochemical Activity in Conjugated Polymers Using Scanning Electrochemical Cell Microscopy. Langmuir : the ACS journal of surfaces and colloids, 31(46), 12814-22. https://doi.org/10.1021/acs.langmuir.5b03316
Aaronson, Barak D B, et al. "Electrodeposition and Screening of Photoelectrochemical Activity in Conjugated Polymers Using Scanning Electrochemical Cell Microscopy." Langmuir : the ACS journal of surfaces and colloids vol. 31,46 (2015): 12814-22. doi: https://doi.org/10.1021/acs.langmuir.5b03316
Aaronson BD, Garoz-Ruiz J, Byers JC, Colina A, Unwin PR. Electrodeposition and Screening of Photoelectrochemical Activity in Conjugated Polymers Using Scanning Electrochemical Cell Microscopy. Langmuir. 2015 Nov 24;31(46):12814-22. doi: 10.1021/acs.langmuir.5b03316. Epub 2015 Nov 10. PMID: 26502089.
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Electrochemical mapping reveals direct correlation between heterogeneous electron-transfer kinetics and local density of states in diamond electrodes.

Angewandte Chemie (International ed. in English)

Patten HV, Meadows KE, Hutton LA, Iacobini JG, Battistel D, McKelvey K, Colburn AW, Newton ME, Macpherson JV, Unwin PR.
PMID: 22696181
Angew Chem Int Ed Engl. 2012 Jul 09;51(28):7002-6. doi: 10.1002/anie.201203057. Epub 2012 Jun 13.

Conducting carbon materials: a multi-microscopy approach shows that local heterogeneous electron-transfer rates at conducting diamond electrodes correlate with the local density of electronic states. This model of electroactivity is of considerable value for the rational design of conducting diamond...

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Patten HV, Meadows KE, Hutton LA, et al. Electrochemical mapping reveals direct correlation between heterogeneous electron-transfer kinetics and local density of states in diamond electrodes. Angew Chem Int Ed Engl. 2012;51(28):7002-6doi: 10.1002/anie.201203057.
Patten, H. V., Meadows, K. E., Hutton, L. A., Iacobini, J. G., Battistel, D., McKelvey, K., Colburn, A. W., Newton, M. E., Macpherson, J. V., & Unwin, P. R. (2012). Electrochemical mapping reveals direct correlation between heterogeneous electron-transfer kinetics and local density of states in diamond electrodes. Angewandte Chemie (International ed. in English), 51(28), 7002-6. https://doi.org/10.1002/anie.201203057
Patten, Hollie V, et al. "Electrochemical mapping reveals direct correlation between heterogeneous electron-transfer kinetics and local density of states in diamond electrodes." Angewandte Chemie (International ed. in English) vol. 51,28 (2012): 7002-6. doi: https://doi.org/10.1002/anie.201203057
Patten HV, Meadows KE, Hutton LA, Iacobini JG, Battistel D, McKelvey K, Colburn AW, Newton ME, Macpherson JV, Unwin PR. Electrochemical mapping reveals direct correlation between heterogeneous electron-transfer kinetics and local density of states in diamond electrodes. Angew Chem Int Ed Engl. 2012 Jul 09;51(28):7002-6. doi: 10.1002/anie.201203057. Epub 2012 Jun 13. PMID: 22696181.
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Simultaneous Interfacial Reactivity and Topography Mapping with Scanning Ion Conductance Microscopy.

Analytical chemistry

Momotenko D, McKelvey K, Kang M, Meloni GN, Unwin PR.
PMID: 26798938
Anal Chem. 2016 Mar 01;88(5):2838-46. doi: 10.1021/acs.analchem.5b04566. Epub 2016 Feb 10.

Scanning ion conductance microscopy (SICM) is a powerful technique for imaging the topography of a wide range of materials and interfaces. In this report, we develop the use and scope of SICM, showing how it can be used for...

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Momotenko D, McKelvey K, Kang M, et al. Simultaneous Interfacial Reactivity and Topography Mapping with Scanning Ion Conductance Microscopy. Anal Chem. 2016;88(5):2838-46doi: 10.1021/acs.analchem.5b04566.
Momotenko, D., McKelvey, K., Kang, M., Meloni, G. N., & Unwin, P. R. (2016). Simultaneous Interfacial Reactivity and Topography Mapping with Scanning Ion Conductance Microscopy. Analytical chemistry, 88(5), 2838-46. https://doi.org/10.1021/acs.analchem.5b04566
Momotenko, Dmitry, et al. "Simultaneous Interfacial Reactivity and Topography Mapping with Scanning Ion Conductance Microscopy." Analytical chemistry vol. 88,5 (2016): 2838-46. doi: https://doi.org/10.1021/acs.analchem.5b04566
Momotenko D, McKelvey K, Kang M, Meloni GN, Unwin PR. Simultaneous Interfacial Reactivity and Topography Mapping with Scanning Ion Conductance Microscopy. Anal Chem. 2016 Mar 01;88(5):2838-46. doi: 10.1021/acs.analchem.5b04566. Epub 2016 Feb 10. PMID: 26798938.
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Redox-dependent spatially resolved electrochemistry at graphene and graphite step edges.

ACS nano

Güell AG, Cuharuc AS, Kim YR, Zhang G, Tan SY, Ebejer N, Unwin PR.
PMID: 25758160
ACS Nano. 2015 Apr 28;9(4):3558-71. doi: 10.1021/acsnano.5b00550. Epub 2015 Mar 18.

The electrochemical (EC) behavior of mechanically exfoliated graphene and highly oriented pyrolytic graphite (HOPG) is studied at high spatial resolution in aqueous solutions using Ru(NH3)6(3+/2+) as a redox probe whose standard potential sits close to the intrinsic Fermi level...

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Güell AG, Cuharuc AS, Kim YR, et al. Redox-dependent spatially resolved electrochemistry at graphene and graphite step edges. ACS Nano. 2015;9(4):3558-71doi: 10.1021/acsnano.5b00550.
Güell, A. G., Cuharuc, A. S., Kim, Y. R., Zhang, G., Tan, S. Y., Ebejer, N., & Unwin, P. R. (2015). Redox-dependent spatially resolved electrochemistry at graphene and graphite step edges. ACS nano, 9(4), 3558-71. https://doi.org/10.1021/acsnano.5b00550
Güell, Aleix G, et al. "Redox-dependent spatially resolved electrochemistry at graphene and graphite step edges." ACS nano vol. 9,4 (2015): 3558-71. doi: https://doi.org/10.1021/acsnano.5b00550
Güell AG, Cuharuc AS, Kim YR, Zhang G, Tan SY, Ebejer N, Unwin PR. Redox-dependent spatially resolved electrochemistry at graphene and graphite step edges. ACS Nano. 2015 Apr 28;9(4):3558-71. doi: 10.1021/acsnano.5b00550. Epub 2015 Mar 18. PMID: 25758160.
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Characterization of Nanopipettes.

Analytical chemistry

Perry D, Momotenko D, Lazenby RA, Kang M, Unwin PR.
PMID: 27108872
Anal Chem. 2016 May 17;88(10):5523-30. doi: 10.1021/acs.analchem.6b01095. Epub 2016 May 05.

Nanopipettes are widely used in electrochemical and analytical techniques as tools for sizing, sequencing, sensing, delivery, and imaging. For all of these applications, the response of a nanopipette is strongly affected by its geometry and surface chemistry. As the...

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Perry D, Momotenko D, Lazenby RA, et al. Characterization of Nanopipettes. Anal Chem. 2016;88(10):5523-30doi: 10.1021/acs.analchem.6b01095.
Perry, D., Momotenko, D., Lazenby, R. A., Kang, M., & Unwin, P. R. (2016). Characterization of Nanopipettes. Analytical chemistry, 88(10), 5523-30. https://doi.org/10.1021/acs.analchem.6b01095
Perry, David, et al. "Characterization of Nanopipettes." Analytical chemistry vol. 88,10 (2016): 5523-30. doi: https://doi.org/10.1021/acs.analchem.6b01095
Perry D, Momotenko D, Lazenby RA, Kang M, Unwin PR. Characterization of Nanopipettes. Anal Chem. 2016 May 17;88(10):5523-30. doi: 10.1021/acs.analchem.6b01095. Epub 2016 May 05. PMID: 27108872.
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Nanoscale Electrocatalysis of Hydrazine Electro-Oxidation at Blistered Graphite Electrodes.

ACS applied materials & interfaces

E SP, Kim YR, Perry D, Bentley CL, Unwin PR.
PMID: 27739301
ACS Appl Mater Interfaces. 2016 Nov 09;8(44):30458-30466. doi: 10.1021/acsami.6b10940. Epub 2016 Oct 25.

There is great interest in finding and developing new, efficient, and more active electrocatalytic materials. Surface modification of highly oriented pyrolytic graphite, through the introduction of surface "blisters", is demonstrated to result in an electrode material with greatly enhanced...

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E SP, Kim YR, Perry D, et al. Nanoscale Electrocatalysis of Hydrazine Electro-Oxidation at Blistered Graphite Electrodes. ACS Appl Mater Interfaces. 2016;8(44):30458-30466doi: 10.1021/acsami.6b10940.
E, S. P., Kim, Y. R., Perry, D., Bentley, C. L., & Unwin, P. R. (2016). Nanoscale Electrocatalysis of Hydrazine Electro-Oxidation at Blistered Graphite Electrodes. ACS applied materials & interfaces, 8(44), 30458-30466. https://doi.org/10.1021/acsami.6b10940
E, Sharel P, et al. "Nanoscale Electrocatalysis of Hydrazine Electro-Oxidation at Blistered Graphite Electrodes." ACS applied materials & interfaces vol. 8,44 (2016): 30458-30466. doi: https://doi.org/10.1021/acsami.6b10940
E SP, Kim YR, Perry D, Bentley CL, Unwin PR. Nanoscale Electrocatalysis of Hydrazine Electro-Oxidation at Blistered Graphite Electrodes. ACS Appl Mater Interfaces. 2016 Nov 09;8(44):30458-30466. doi: 10.1021/acsami.6b10940. Epub 2016 Oct 25. PMID: 27739301.
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Impact of Surface Chemistry on Nanoparticle-Electrode Interactions in the Electrochemical Detection of Nanoparticle Collisions.

Langmuir : the ACS journal of surfaces and colloids

Chen CH, Ravenhill ER, Momotenko D, Kim YR, Lai SC, Unwin PR.
PMID: 26448140
Langmuir. 2015 Nov 03;31(43):11932-42. doi: 10.1021/acs.langmuir.5b03033. Epub 2015 Oct 22.

The electrochemical detection of a single nanoparticle (NP) at a support electrode can provide key information on surface chemistry and fundamental electron transfer (ET) properties at the nanoscale. This study employs scanning electrochemical cell microscopy (SECCM) as a fluidic...

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Chen CH, Ravenhill ER, Momotenko D, et al. Impact of Surface Chemistry on Nanoparticle-Electrode Interactions in the Electrochemical Detection of Nanoparticle Collisions. Langmuir. 2015;31(43):11932-42doi: 10.1021/acs.langmuir.5b03033.
Chen, C. H., Ravenhill, E. R., Momotenko, D., Kim, Y. R., Lai, S. C., & Unwin, P. R. (2015). Impact of Surface Chemistry on Nanoparticle-Electrode Interactions in the Electrochemical Detection of Nanoparticle Collisions. Langmuir : the ACS journal of surfaces and colloids, 31(43), 11932-42. https://doi.org/10.1021/acs.langmuir.5b03033
Chen, Chang-Hui, et al. "Impact of Surface Chemistry on Nanoparticle-Electrode Interactions in the Electrochemical Detection of Nanoparticle Collisions." Langmuir : the ACS journal of surfaces and colloids vol. 31,43 (2015): 11932-42. doi: https://doi.org/10.1021/acs.langmuir.5b03033
Chen CH, Ravenhill ER, Momotenko D, Kim YR, Lai SC, Unwin PR. Impact of Surface Chemistry on Nanoparticle-Electrode Interactions in the Electrochemical Detection of Nanoparticle Collisions. Langmuir. 2015 Nov 03;31(43):11932-42. doi: 10.1021/acs.langmuir.5b03033. Epub 2015 Oct 22. PMID: 26448140.
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Frontiers in Nanoscale Electrochemical Imaging: Faster, Multifunctional, and Ultrasensitive.

Langmuir : the ACS journal of surfaces and colloids

Kang M, Momotenko D, Page A, Perry D, Unwin PR.
PMID: 27396415
Langmuir. 2016 Aug 16;32(32):7993-8008. doi: 10.1021/acs.langmuir.6b01932. Epub 2016 Aug 03.

A wide range of interfacial physicochemical processes, from electrochemistry to the functioning of living cells, involve spatially localized chemical fluxes that are associated with specific features of the interface. Scanning electrochemical probe microscopes (SEPMs) represent a powerful means of...

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Kang M, Momotenko D, Page A, et al. Frontiers in Nanoscale Electrochemical Imaging: Faster, Multifunctional, and Ultrasensitive. Langmuir. 2016;32(32):7993-8008doi: 10.1021/acs.langmuir.6b01932.
Kang, M., Momotenko, D., Page, A., Perry, D., & Unwin, P. R. (2016). Frontiers in Nanoscale Electrochemical Imaging: Faster, Multifunctional, and Ultrasensitive. Langmuir : the ACS journal of surfaces and colloids, 32(32), 7993-8008. https://doi.org/10.1021/acs.langmuir.6b01932
Kang, Minkyung, et al. "Frontiers in Nanoscale Electrochemical Imaging: Faster, Multifunctional, and Ultrasensitive." Langmuir : the ACS journal of surfaces and colloids vol. 32,32 (2016): 7993-8008. doi: https://doi.org/10.1021/acs.langmuir.6b01932
Kang M, Momotenko D, Page A, Perry D, Unwin PR. Frontiers in Nanoscale Electrochemical Imaging: Faster, Multifunctional, and Ultrasensitive. Langmuir. 2016 Aug 16;32(32):7993-8008. doi: 10.1021/acs.langmuir.6b01932. Epub 2016 Aug 03. PMID: 27396415.
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Simultaneous Nanoscale Surface Charge and Topographical Mapping.

ACS nano

Perry D, Al Botros R, Momotenko D, Kinnear SL, Unwin PR.
PMID: 26132922
ACS Nano. 2015 Jul 28;9(7):7266-76. doi: 10.1021/acsnano.5b02095. Epub 2015 Jul 14.

Nanopipettes are playing an increasingly prominent role in nanoscience, for sizing, sequencing, delivery, detection, and mapping interfacial properties. Herein, the question of how to best resolve topography and surface charge effects when using a nanopipette as a probe for...

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Perry D, Al Botros R, Momotenko D, et al. Simultaneous Nanoscale Surface Charge and Topographical Mapping. ACS Nano. 2015;9(7):7266-76doi: 10.1021/acsnano.5b02095.
Perry, D., Al Botros, R., Momotenko, D., Kinnear, S. L., & Unwin, P. R. (2015). Simultaneous Nanoscale Surface Charge and Topographical Mapping. ACS nano, 9(7), 7266-76. https://doi.org/10.1021/acsnano.5b02095
Perry, David, et al. "Simultaneous Nanoscale Surface Charge and Topographical Mapping." ACS nano vol. 9,7 (2015): 7266-76. doi: https://doi.org/10.1021/acsnano.5b02095
Perry D, Al Botros R, Momotenko D, Kinnear SL, Unwin PR. Simultaneous Nanoscale Surface Charge and Topographical Mapping. ACS Nano. 2015 Jul 28;9(7):7266-76. doi: 10.1021/acsnano.5b02095. Epub 2015 Jul 14. PMID: 26132922.
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Showing 1 to 11 of 11 entries