Characterization of phenomena occurring at the interface of chiral conducting surfaces

Chahma, M’hamed; McTiernan, Christopher D.; Abbas, Sara A.

doi:10.1039/c4nj00489b

Cited by 6 publications

(5 citation statements)

References 59 publications

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“…Its capacitive current decreased by 30% in the presence of a free D-Ala-OMe (L-Ala-OMe or L-Leu-OMe) as a result of the formation of hydrogen bonds on the surface of the chiral polymers. 812 Similar behavior has been reported for oligonucleotide-functionalized polythiophenes. 813,814 4.1.4.2.3.…”

Section: Bysupporting

confidence: 71%

“…The stable poly 23 chiral polymer has been tested for the detection of bioorganic molecules (Figure , bottom-right). Its capacitive current decreased by 30% in the presence of a free d -Ala-OMe ( l -Ala-OMe or l -Leu-OMe) as a result of the formation of hydrogen bonds on the surface of the chiral polymers . Similar behavior has been reported for oligonucleotide-functionalized polythiophenes. , …”

Section: Part 2 Applications That Take Advantage Of Modifications At ...mentioning

confidence: 99%

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Conducting Polymers in the Fields of Energy, Environmental Remediation, and Chemical–Chiral Sensors

et al. 2018

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Conducting polymers (CPs), thanks to their unique properties, structures made on-demand, new composite mixtures, and possibility of deposit on a surface by chemical, physical, or electrochemical methodologies, have shown in the last years a renaissance and have been widely used in important fields of chemistry and materials science. Due to the extent of the literature on CPs, this review, after a concise introduction about the interrelationship between electrochemistry and conducting polymers, is focused exclusively on the following applications: energy (energy storage devices and solar cells), use in environmental remediation (anion and cation trapping, electrocatalytic reduction/oxidation of pollutants on CP based electrodes, and adsorption of pollutants) and finally electroanalysis as chemical sensors in solution, gas phase, and chiral molecules. This review is expected to be comprehensive, authoritative, and useful to the chemical community interested in CPs and their applications.

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Section: Bysupporting

confidence: 71%

Section: Part 2 Applications That Take Advantage Of Modifications At ...mentioning

confidence: 99%

Conducting Polymers in the Fields of Energy, Environmental Remediation, and Chemical–Chiral Sensors

et al. 2018

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“…Functional pendant groups carrying an amine or a carboxylic acid were attached respectively to trimer carboxylic acid [ 303 , 304 , 377 , 378 , 379 , 380 , 381 ] or amine ( Scheme 20 , I and II) [ 207 , 208 , 209 , 382 ]. The amide formation occurs on the side group of the central thiophene either before [ 377 , 378 , 379 , 380 ] or after [ 207 , 381 , 382 ] the formation of the trimer and it is typically achieved by carboxylic acid activation by acyl chloride [ 207 , 208 , 209 , 378 ] or a carbodiimide coupling agent [ 377 , 379 , 380 , 381 ], followed by amine nucleophilic substitution. Instead, the reaction between a trimer diester and hydrazine leads to the formation of a pyridazinedione pendant group on the central unit ( Scheme 20 , III) [ 366 , 367 ].…”

Section: Trimer Structuresmentioning

confidence: 99%

Thiophene-Based Trimers and Their Bioapplications: An Overview

et al. 2021

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Certainly, the success of polythiophenes is due in the first place to their outstanding electronic properties and superior processability. Nevertheless, there are additional reasons that contribute to arouse the scientific interest around these materials. Among these, the large variety of chemical modifications that is possible to perform on the thiophene ring is a precious aspect. In particular, a turning point was marked by the diffusion of synthetic strategies for the preparation of terthiophenes: the vast richness of approaches today available for the easy customization of these structures allows the finetuning of their chemical, physical, and optical properties. Therefore, terthiophene derivatives have become an extremely versatile class of compounds both for direct application or for the preparation of electronic functional polymers. Moreover, their biocompatibility and ease of functionalization make them appealing for biology and medical research, as it testifies to the blossoming of studies in these fields in which they are involved. It is thus with the willingness to guide the reader through all the possibilities offered by these structures that this review elucidates the synthetic methods and describes the full chemical variety of terthiophenes and their derivatives. In the final part, an in-depth presentation of their numerous bioapplications intends to provide a complete picture of the state of the art.

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“…The oxidation potential of these chiral electrodes was found to be between 0.40-0.50 V vs. Fc+/Fc. In order to examine the sensing ability of the biosensor, the capacitive current of the chiral-poly4-Pt has been measured in the absence and presence of AA such as Ala and Leu [47]. Figure 2A shows the differences in the capacitive currents of chiral-poly4-Pt observed after addition of 1 mM of free LeuOMe.…”

Section: Chiral Electrodes Based On Polythiophenesmentioning

confidence: 99%

Doped Polythiophene Chiral Electrodes as Electrochemical Biosensors

Chahma

2021

Electrochem

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π-conducting materials such as chiral polythiophenes exhibit excellent electrochemical stability in doped and undoped states on electrode surfaces (chiral electrodes), which help tune their physical and electronic properties for a wide range of uses. To overcome the limitations of traditional surface immobilization methods, an alternative pathway for the detection of organic and bioorganic targets using chiral electrodes has been developed. Moreover, chiral electrodes have the ability to carry functionalities, which helps the immobilization and recognition of bioorganic molecules. In this review, we describe the use of polythiophenes for the design of chiral electrodes and their applications as electrochemical biosensors.

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Characterization of phenomena occurring at the interface of chiral conducting surfaces

Abstract: Chiral conducting surfaces based on leucine functionalized terthiophenes can detect bioorganic molecules via formation of hydrogen bonds.

Cited by 6 publications

References 59 publications

Conducting Polymers in the Fields of Energy, Environmental Remediation, and Chemical–Chiral Sensors

Conducting Polymers in the Fields of Energy, Environmental Remediation, and Chemical–Chiral Sensors

Thiophene-Based Trimers and Their Bioapplications: An Overview

Doped Polythiophene Chiral Electrodes as Electrochemical Biosensors

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