Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry

Scott N. Thorgaard; Phil Buhlmann

doi:10.1016/j.jelechem.2011.10.019

Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry

Scott N. Thorgaard, Phil Buhlmann

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Self-assembled monolayers (SAMs) of 5,10,15,20-tetra(4-pyridyl)porphyrin (TPyP) and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (CoTPyP) were formed by in situ equilibrium adsorption onto Au(1 1 1) electrodes passivated by an interposed adlayer of iodine. Adsorption of the porphyrins onto Au(1 1 1) was confirmed by cyclic voltammetry, and each of the SAMs was imaged using electrochemical scanning tunneling microscopy (EC-STM). The TPyP and CoTPyP SAMs were found to contain highly ordered domains on I-Au(1 1 1) at positive potentials where a disordered SAM would be expected for bare Au(1 1 1). Cyclic voltammetry was also used to observe in situ the assembly of binary SAMs containing TPyP and CoTPyP as they formed.

Original language	English (US)
Pages (from-to)	94-99
Number of pages	6
Journal	Journal of Electroanalytical Chemistry
Volume	664
DOIs	https://doi.org/10.1016/j.jelechem.2011.10.019
State	Published - Jan 1 2012

Keywords

Adsorption
Au(1 1 1)
Cyclic voltammetry
Electrochemical scanning tunneling microscopy
Porphyrins
Self assembled monolayers

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10.1016/j.jelechem.2011.10.019

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Thorgaard, S. N., & Buhlmann, P. (2012). Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry. Journal of Electroanalytical Chemistry, 664, 94-99. https://doi.org/10.1016/j.jelechem.2011.10.019

Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry. / Thorgaard, Scott N.; Buhlmann, Phil.
In: Journal of Electroanalytical Chemistry, Vol. 664, 01.01.2012, p. 94-99.

Research output: Contribution to journal › Article › peer-review

Thorgaard, SN & Buhlmann, P 2012, 'Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry', Journal of Electroanalytical Chemistry, vol. 664, pp. 94-99. https://doi.org/10.1016/j.jelechem.2011.10.019

Thorgaard SN, Buhlmann P. Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry. Journal of Electroanalytical Chemistry. 2012 Jan 1;664:94-99. doi: 10.1016/j.jelechem.2011.10.019

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title = "Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry",

abstract = "Self-assembled monolayers (SAMs) of 5,10,15,20-tetra(4-pyridyl)porphyrin (TPyP) and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (CoTPyP) were formed by in situ equilibrium adsorption onto Au(1 1 1) electrodes passivated by an interposed adlayer of iodine. Adsorption of the porphyrins onto Au(1 1 1) was confirmed by cyclic voltammetry, and each of the SAMs was imaged using electrochemical scanning tunneling microscopy (EC-STM). The TPyP and CoTPyP SAMs were found to contain highly ordered domains on I-Au(1 1 1) at positive potentials where a disordered SAM would be expected for bare Au(1 1 1). Cyclic voltammetry was also used to observe in situ the assembly of binary SAMs containing TPyP and CoTPyP as they formed.",

keywords = "Adsorption, Au(1 1 1), Cyclic voltammetry, Electrochemical scanning tunneling microscopy, Porphyrins, Self assembled monolayers",

author = "Thorgaard, \{Scott N.\} and Phil Buhlmann",

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T1 - Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry

AU - Thorgaard, Scott N.

AU - Buhlmann, Phil

PY - 2012/1/1

Y1 - 2012/1/1

N2 - Self-assembled monolayers (SAMs) of 5,10,15,20-tetra(4-pyridyl)porphyrin (TPyP) and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (CoTPyP) were formed by in situ equilibrium adsorption onto Au(1 1 1) electrodes passivated by an interposed adlayer of iodine. Adsorption of the porphyrins onto Au(1 1 1) was confirmed by cyclic voltammetry, and each of the SAMs was imaged using electrochemical scanning tunneling microscopy (EC-STM). The TPyP and CoTPyP SAMs were found to contain highly ordered domains on I-Au(1 1 1) at positive potentials where a disordered SAM would be expected for bare Au(1 1 1). Cyclic voltammetry was also used to observe in situ the assembly of binary SAMs containing TPyP and CoTPyP as they formed.

AB - Self-assembled monolayers (SAMs) of 5,10,15,20-tetra(4-pyridyl)porphyrin (TPyP) and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (CoTPyP) were formed by in situ equilibrium adsorption onto Au(1 1 1) electrodes passivated by an interposed adlayer of iodine. Adsorption of the porphyrins onto Au(1 1 1) was confirmed by cyclic voltammetry, and each of the SAMs was imaged using electrochemical scanning tunneling microscopy (EC-STM). The TPyP and CoTPyP SAMs were found to contain highly ordered domains on I-Au(1 1 1) at positive potentials where a disordered SAM would be expected for bare Au(1 1 1). Cyclic voltammetry was also used to observe in situ the assembly of binary SAMs containing TPyP and CoTPyP as they formed.

KW - Adsorption

KW - Au(1 1 1)

KW - Cyclic voltammetry

KW - Electrochemical scanning tunneling microscopy

KW - Porphyrins

KW - Self assembled monolayers

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ER -

Self-assembled monolayers formed by 5,10,15,20-tetra(4-pyridyl)porphyrin and cobalt 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine on iodine-passivated Au(1 1 1) as observed using electrochemical scanning tunneling microscopy and cyclic voltammetry

Abstract

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