A succinct review of refined chemical sensor systems based on conducting polymer–cyclodextrin hybrids

Bae, Joonwon; Shin, Kyusoon; Kwon, Oh Seok; Hwang, Yun-Jung; An, Jaieun; Jang, Ayeon; Kim, Hye Jun; Lee, Chang‐Soo

doi:10.1016/j.jiec.2019.06.051

Cited by 26 publications

(8 citation statements)

References 97 publications

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“…Conductivity depends on RH, where the molar fraction of the biopolymer plays a key role in the electrochemical performance of the composite material. This creates a synergistic effect that is due to the π-π * conjugation of PANI, which can affect sensitivity behavior [ 76 ]. The synergism between PANI and a second component (mainly the metal ions) has been reported by Singh and Shukla [ 59 ].…”

Section: Introductionmentioning

confidence: 99%

Polyaniline/Biopolymer Composite Systems for Humidity Sensor Applications: A Review

et al. 2021

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The development of polyaniline (PANI)/biomaterial composites as humidity sensor materials represents an emerging area of advanced materials with promising applications. The increasing attention to biopolymer materials as desiccants for humidity sensor components can be explained by their sustainability and propensity to absorb water. This review represents a literature survey, covering the last decade, which is focused on the interrelationship between the core properties and moisture responsiveness of multicomponent polymer/biomaterial composites. This contribution provides an overview of humidity-sensing materials and the corresponding sensors that emphasize the resistive (impedance) type of PANI devices. The key physicochemical properties that affect moisture sensitivity include the following: swelling, water vapor adsorption capacity, porosity, electrical conductivity, and enthalpies of adsorption and vaporization. Some key features of humidity-sensing materials involve the response time, recovery time, and hysteresis error. This work presents a discussion on various types of humidity-responsive composite materials that contain PANI and biopolymers, such as cellulose, chitosan and structurally related systems, along with a brief overview of carbonaceous and ceramic materials. The effect of additive components, such as polyvinyl alcohol (PVA), for film fabrication and their adsorption properties are also discussed. The mechanisms of hydration and proton transfer, as well as the relationship with conductivity is discussed. The literature survey on hydration reveals that the textural properties (surface area and pore structure) of a material, along with the hydrophile–lipophile balance (HLB) play a crucial role. The role of HLB is important in PANI/biopolymer materials for understanding hydration phenomena and hydrophobic effects. Fundamental aspects of hydration studies that are relevant to humidity sensor materials are reviewed. The experimental design of humidity sensor materials is described, and their relevant physicochemical characterization methods are covered, along with some perspectives on future directions in research on PANI-based humidity sensors.

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Section: Introductionmentioning

confidence: 99%

Polyaniline/Biopolymer Composite Systems for Humidity Sensor Applications: A Review

et al. 2021

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“…These functional materials mainly include CD-based carbon nanomaterials: carbon nanotubes (CNTs), graphene, and conducting polymers. Nowadays, developing the CD-based conducting polymers for the purpose of electrochemical sensing is considered a hot subject of research interest [56]. This is due to the fact that CD-based conducting polymers pasted on electrodes via electrooxidation process of monomers offer high stability, good catalytic ability, and electronic features [57].…”

Section: Cyclodextrin-based Electrochemical Sensorsmentioning

confidence: 99%

“…The coumarin moiety is encapsulated within the hydrophobic cavity of β-CD and thus offers strong fluorescence to the hybrid polymeric conjugate (55) via fluorescence resonance energy transfer (FRET) from donor pyrene unit to acceptor coumarin unit ("FRET-ON" response). It has been remarked that the addition of competitive guest molecule, namely hyodeoxycholic acid (56), leads to the decrease in fluorescence by virtue of the exclusion of coumarin moiety from inside of the β-CD hydrophobic cavity to outside. This, in turn, leads to the association between coumarin and pyrene units and offers the "FRET-OFF" response (Figure 15) [74].…”

Section: Cyclodextrin-based Polymers As Chemical Sensorsmentioning

confidence: 99%

Cyclodextrin-Based Sensors for the Recognition of Small Molecules

Rather¹,

Hasan²,

Ali³

2023

Cyclodextrins - Core Concepts and New Frontiers

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Owing to the selective recognition ability, exceptional biocompatibility, water solubility, non-toxicity, economically inexpensive, commercial availability, and easy functionalization, cyclodextrins (CDs) act as the main building blocks for the creation of beautifully simple yet much effective supramolecular architectures of fundamental interest. Over the past few decades, CDs have engrossed a noteworthy interest in the scientific community because of their usage in the development of chemical sensors via molecular recognition phenomenon. Bearing the delightful sensing capability of CDs in mind, herewith, we envisioned to disclose the recent developments in the sensing of diverse biologically significant small molecules by CDs through colorimetric, fluorescence, electrochemical, and potentiometric response. Sensing events and corresponding distinguishing optical features in cyclodextrin-based monomers, dimers, clusters, and nano-assemblies have been elaborated in detail. The authors are of the opinion that this chapter will offer new dimensions to supramolecular sensors in general and CDs-based sensors in particular.

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“…Among the different types of carbon-based nanomaterials, carbon nanotubes (CNTs), graphene, and carbon nanodots were mainly used up to date for the formation of composite nanostructure with CDs for sensing applications [7,32].…”

Section: The Use Of Cyclodextrins In the Electrochemical Sensors Designmentioning

confidence: 99%

Exploring the Research Progress about the Applications of Cyclodextrins and Nanomaterials in Electroanalysis

et al. 2022

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Cyclodextrins and nanomaterials are widely used in the achievement of powerful platforms in supramolecular chemistry and nanotechnology. The relatively hydrophobic internal cavity of the CDs selectively retains molecules having the proper geometry, while the hydrophilic exterior allows CDs to improve the dispersibility and molecular recognition. The nanomaterials provide higher surface area, good conductivity, and electrocatalytic effect. The use of nanomaterials and CDs in electrochemical sensors' design allows the development of a large variety of devices, explaining the increasing number of papers in the last years that are discussed in this review.

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A succinct review of refined chemical sensor systems based on conducting polymer–cyclodextrin hybrids

Cited by 26 publications

References 97 publications

Polyaniline/Biopolymer Composite Systems for Humidity Sensor Applications: A Review

Polyaniline/Biopolymer Composite Systems for Humidity Sensor Applications: A Review

Cyclodextrin-Based Sensors for the Recognition of Small Molecules

Exploring the Research Progress about the Applications of Cyclodextrins and Nanomaterials in Electroanalysis

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