Theory of scanning electrochemical microscopy (SECM) as a probe of surface conductivity
Literature Information
Anna L. Whitworth, Daniel Mandler, Patrick R. Unwin
Scanning electrochemical microscopy (SECM) can be used in the feedback mode as a ‘contactless’ method for probing the conductivity of ultra-thin films. With this new technique a sample is bathed with one form of a reversible redox (Red/Ox) couple, e.g. Red, and an ultramicroelectrode (UME), located close to the film surface is used to locally convert Red to Ox by diffusion-limited oxidation. Ox diffuses from the UME to the film where it may undergo conversion back to Red. This process is driven by a potential gradient, which depends on the surface conductivity. A model is developed for the SECM feedback process from which the conductivity of the film can be extracted. Two routes arising from the model are considered: an approximate method which allows an order of magnitude estimate of the film conductivity and a more involved approach, which can be used with greater accuracy. The merits of the two approaches are assessed by analysing experimental data for the effect of surface pressure on the conductivity of a polyaniline monolayer at a water/air interface.
Related Literature
High performance quinacridone-based polymers in film transistors and photovoltaics: effects of vinylene linkage on crystallinity and morphology
DOI: 10.1039/C5PY00103J
Cyclic polymers based on UV-induced strain promoted azide–alkyne cycloaddition reaction
Peng Sun, Qingquan Tang, Zhenpeng Wang, Yuming Zhao, Ke Zhang
DOI: 10.1039/C5PY00416K
Avoiding compositional drift during the RAFT copolymerization of N-(2-hydroxypropyl)methacrylamide and N-acryloxysuccinimide: towards uniform platforms for post-polymerization modification
John Moraes, Ioana-Maria Simionca, Hedi Ketari, Harm-Anton Klok
DOI: 10.1039/C5PY00253B
Functional polyesters derived from alternating copolymerization of norbornene anhydride and epoxides
Ryan Baumgartner, Ziyuan Song, Yanfeng Zhang
DOI: 10.1039/C5PY00119F
N-Heterocyclic carbenes as organocatalysts for polymerizations: trends and frontiers
Stefan Naumann, Andrew P. Dove
DOI: 10.1039/C5PY00145E
End-capped poly(4,5-dichlorophthalaldehyde): a stable self-immolative poly(aldehyde) for translating specific inputs into amplified outputs, both in solution and the solid state
Anthony M. DiLauro, Scott T. Phillips
DOI: 10.1039/C5PY00190K
Polypeptoids with tunable cloud point temperatures synthesized from N-substituted glycine N-thiocarboxyanhydrides
Xinfeng Tao, Jianwei Du, Youxiang Wang, Jun Ling
DOI: 10.1039/C5PY00191A
A facile route to diverse assemblies by host–guest recognition
Songling Han, Qixiong Zhang, Jiawei Guo, Xiaohui Li, Jianxiang Zhang
DOI: 10.1039/C5PY00297D
Direct functionalization of Kevlar® with copolymers containing sulfonyl nitrenes
Jeremy Yatvin, Shalli A. Sherman, Shaun F. Filocamo, Jason Locklin
DOI: 10.1039/C5PY00090D
Sensitive and reliable detection of glass transition of polymers by fluorescent probes based on AIE luminogens
Suping Bao, Qihua Wu, Qiuling Yu, Jing Wang, Guodong Liang
DOI: 10.1039/C5PY00308C
You might also like
What is Ethyl 3-cyclohexylpropanoate (CAS: 10094-36-7)?
Ethyl 3-cyclohexylpropanoate is a clear, colorless to light yellow liquid with a...
How should waste containing 2-(Hydroxymethyl)-5-(methoxycarbonyl)-6-methyl-4-(2-nitrophenyl)nicotinic acid (CAS: 34783-31-8) be handled?
Waste containing 2-(Hydroxymethyl)-5-(methoxycarbonyl)-6-methyl-4-(2-nitrophenyl...
How should waste containing 2,4,6-Tris(pentafluoroethyl)-1,3,5-triazine (CAS: 858-46-8) be handled?
Waste containing 2,4,6-Tris(pentafluoroethyl)-1,3,5-triazine (CAS: 858-46-8) sho...
What precautions should be taken when handling Chloroac-nle-oh (CAS: 56787-36-1)?
When handling Chloroac-nle-oh (CAS: 56787-36-1), it is essential to wear appropr...
What industries use Ethyl 6-phenylimidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 752244-05-6)?
Ethyl 6-phenylimidazo[2,1-b][1,3]thiazole-3-carboxylate is primarily used in the...
Are there alternatives to alpha-(2-Bromophenyl)benzylamine (CAS: 55095-15-3) in synthesis?
Alternatives to alpha-(2-Bromophenyl)benzylamine (CAS: 55095-15-3) in synthesis ...
How should waste containing 2-Chloro-5-methoxypyridine (CAS: 139585-48-1) be handled?
Waste containing 2-Chloro-5-methoxypyridine (CAS: 139585-48-1) should be managed...
What industries use 1-(4-Methoxyphenyl)-2,5-dimethyl-1H-pyrrole (CAS: 5044-27-9)?
1-(4-Methoxyphenyl)-2,5-dimethyl-1H-pyrrole (CAS: 5044-27-9) is used in various ...
Are there alternatives to 3-Bromo-5-(N-Boc)aminomethylisoxazole (CAS: 903131-45-3) in synthesis?
There are alternative reagents and compounds that can be used in the synthesis o...
What is Tungsten(IV) oxide (CAS: 12036-22-5)?
Tungsten(IV) oxide, also known as tungsten dioxide, is a chemical compound with ...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











![2-Bromodibenzo[b,d]furan structure 2-Bromodibenzo[b,d]furan structure](https://static.chemtradehub.com/structs/86-/86-76-0-1814.webp)

![2-{3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl}[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride (1:1) structure 2-{3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl}[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride (1:1) structure](https://static.chemtradehub.com/structs/253/25332-39-2-496e.webp)
![Bis[(1,2,3,4,5-eta)-1-(diphenylphosphino)cyclopentadienyl]iron structure Bis[(1,2,3,4,5-eta)-1-(diphenylphosphino)cyclopentadienyl]iron structure](https://static.chemtradehub.com/structs/121/12150-46-8-ecd2.webp)