Catalytic Au Electrodes Based on SAMs of <i>per</i>(6‐deoxy‐6‐thio‐2,3‐di‐<i>O</i>‐methyl)‐β‐cyclodextrin

Chmurski, Kazimierz; Koralewska, Anna; Temeriusz, Andrzej; Bilewicz, Renata

doi:10.1002/elan.200302954

Cited by 9 publications

(4 citation statements)

References 25 publications

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“…Octanothiol was used to seal the remaining empty space, done despite the fact that it reduces the efficiency of the ET process. This modified gold electrode was used to self-assemble laccase with methylene blue included in the CD cavities as a mediator . A similar approach was also applied but without sealing the empty surface of the gold electrode and using a modified enzyme.…”

Section: 1 Electrochemical Biosensorsmentioning

confidence: 99%

“…This modified gold electrode was used to selfassemble laccase with methylene blue included in the CD cavities as a mediator. 242 A similar approach was also applied but without sealing the empty surface of the gold electrode and using a modified enzyme. In this report the authors did not discuss the stability of the biosensor.…”

Section: Electrochemical Biosensorsmentioning

confidence: 99%

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Supramolecular Chemistry of Cyclodextrins in Enzyme Technology

2007

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Section: 1 Electrochemical Biosensorsmentioning

confidence: 99%

Section: Electrochemical Biosensorsmentioning

confidence: 99%

Supramolecular Chemistry of Cyclodextrins in Enzyme Technology

2007

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“…Other work 225 also showed the response of these types of monolayer to a variety of substrates and further demonstrated that mixed monolayers of the cyclodextrins with simple alkyl thiols were of higher quality than films of cyclodextrin alone. 227 Similar work on various quinine mediators in solution has shown that electron transfer only occurs when the mediator is of a size that allows it to enter the cyclodextrin cavity. 226 This process could be affected by the presence of a naphthalene guest in the cyclodextrin cavity.…”

Section: Conclusion 243mentioning

confidence: 94%

Cyclodextrins

2011

Macrocycles

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Many of the compounds mentioned previously within this work are entirely synthetic in origin and as such do not occur naturally. The cyclodextrins are somewhat different however since they have a natural origin, being synthesised originally by bacterial fermentation and now via the use of enzymes from a natural feedstock. We have already discussed how small rings can be incorporated into macrocycles, such as in crown ethers and calixarenes. The cyclodextrins, also known as cycloamyloses, represent further examples of macrocyclic compounds formed by the joining of small rings to give rise to a much larger ring system. We intend to provide a general overview of cyclodextrin chemistry within this chapter; for further detail the reader is recommended to study some of the works listed in the Bibliography.Amylose is a water-soluble polysaccharide which is made up of 1,4-linked glucose units. Together with amylopectin it is one of the major constituents of starch. Cyclodextrins are made up of a series of α-D-glucopyranoside sugars linked together to form a macrocycle and can be thought of as cyclic versions of amylose. The three most common members of this group occur naturally; these are the hexamer (α-cyclodextrin), heptamer (β-cyclodextrin) and octamer (γ-cyclodextrin), as shown in Figure 6.1. The cyclic pentamer has been successfully synthesised in the laboratory -as have larger members of the series.Cyclodextrins were initially isolated by Villiers 1 as long ago as 1891; Villiers coined the name 'cellulosine' for these materials. He digested starch with Bacillus amylobacter to obtain amongst other things about 0.3% of a crystalline material. Elemental analysis showed it to be a polysugar and to have two distinct crystal forms. However, the techniques for in-depth separation and characterisation of these materials (thought to have been αand β-cyclodextrin) were not then available. Later work by Schardinger, 2 again using bacterial digestion of starch, managed to produce materials similar to cellulosine in yields of up to 30% and to separate and characterise the natural αand β-cyclodextrins, which were then named 'Schardinger sugars' or 'Schardinger dextrins'. The early history of these and the γ-cyclodextrins, the elucidation of their composition from glucose (they can also be thought of as consisting of maltose; for example, α-cyclodextrin can be thought of as consisting of six glucose or three maltose units) and their cyclic structure have all been reviewed. 3 In 1998, the journal Chemical Reviews published a special issue on cyclodextrins, to which the reader is referred in the Bibliography.Macrocycles: C onstruction, Chemistr y and Nanotechnology Applications, First Edition.Frank D avis and S éamus Higs on.

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“…The monolayers are usually well packed, ordered, and stable and can be easily tailored for certain applications by changing the functional terminal group in contact with the solution. Alkanethiol monolayers can provide a membrane matrix useful for immobilizing structures such as cylodextrins [80][81][82].…”

Section: Self-assembly Methodsmentioning

confidence: 99%

Electrochemistry of Cyclodextrin Inclusion Complexes of Pharmaceutical Compounds

Radi¹

2010

TOCBMJ

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Electrochemistry of cyclodextrins (CDs) and cyclodextrin inclusion complexes with different pharmaceutical compounds is reviewed. The article highlights some electrochemical investigations of the CD-drugs interactions in solution. Cyclodextrin modified electrodes and their applications as electrochemical sensors in pharmaceutical analysis based on the self-assembly of CD derivatives on metal electrodes and nanoparticles, and cyclodextrin-modified multiwalled carbon nanotubes are also discussed.

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Catalytic Au Electrodes Based on SAMs of per(6‐deoxy‐6‐thio‐2,3‐di‐O‐methyl)‐β‐cyclodextrin

Cited by 9 publications

References 25 publications

Supramolecular Chemistry of Cyclodextrins in Enzyme Technology

Supramolecular Chemistry of Cyclodextrins in Enzyme Technology

Cyclodextrins

Electrochemistry of Cyclodextrin Inclusion Complexes of Pharmaceutical Compounds

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