Carbon Dot-Anchored Cobalt Oxyhydroxide Composite-Based Hydrogel Sensor for On-Site Monitoring of Organophosphorus Pesticides

Li, Hongxia; Su, Changshun; Liu, Geoffrey; Lv, Ting; Yang, Chen; Lu, Qi; Sun, Chia‐Chung; Yan, Xu

doi:10.1021/acsami.2c17450

Cited by 16 publications

(6 citation statements)

References 37 publications

(53 reference statements)

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“…Unfortunately, due to the undesired ACQ effect of CDs in the solid state, the progress of CD-based solid sensing platforms is lagging. The CD-based hydrogels offer a potential platform owing to their low fluidity and stickiness, which could detect heavy metals, [157][158][159] small molecules, [160] biomolecules, [52] ROS, [82] organic pollutants, [161,162] bacteria, [163] and gas pollutants. [164] With the development of urbanization and industrialization, environmental pollution is becoming increasingly serious, and the detection of heavy metals has become one of the most popular research fields.…”

Section: Sensingmentioning

confidence: 99%

“…Unfortunately, due to the undesired ACQ effect of CDs in the solid state, the progress of CD‐based solid sensing platforms is lagging. The CD‐based hydrogels offer a potential platform owing to their low fluidity and stickiness, which could detect heavy metals, [ 157–159 ] small molecules, [ 160 ] biomolecules, [ 52 ] ROS, [ 82 ] organic pollutants, [ 161,162 ] bacteria, [ 163 ] and gas pollutants. [ 164 ]…”

Section: Applications Of Cd‐based Hydrogelsmentioning

confidence: 99%

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Carbon Dot‐Based Hydrogels: Preparations, Properties, and Applications

Wang

Yin

et al. 2023

Small

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heat, electricity, magnetism, mechanics, and chemistry. For example, the involvement of nanoparticles has proved to be an effective strategy to impart multifunctional properties to the hydrogels. [11] As a composite material, nanoparticle hydrogel composites have made remarkable progress in the fields of biomedicine, [12,13] sensing, [14,15] advanced energy technology, [16] environment and industry. [17] For another example, fluorescent hydrogels have been constructed by introducing organic dyes, [18,19] lanthanides, [20,21] or semiconductor quantum dots [22] into the hydrogel system.CDs are a novel class of carbon-based nanomaterials, which can be viewed as the relatives of nanoparticles with contractible sizes (typically <10 nm). Compared with other nanoparticles, CDs have high photostability, [23] low cost, [24] good biocompatibility, [25] high water solubility, and tunable photoluminescence. [26] These intriguing properties afford CDs many potential applications in biomedicine, [27,28] sensing, [29,30] catalysis, [31,32] optoelectronic devices, [33][34][35] and anticounterfeiting. [36] The emergence of CDs solved the long-lasting drawbacks of traditional PL materials, such as the poor photostability of organic dyes, the high cost of lanthanides, and the toxicity of semiconductor quantum dots. Generally, CDs can be obtained by two strategies. One is the top-down route, in which the CDs are broken off from larger carbon species. The other is the bottomup route, in which the CDs are synthesized by using molecular precursors. [37] According to the micro-/nanostructure, formation mechanism, and precursors used, CDs are mainly divided into four categories: [38] graphene quantum dots (GQDs), carbon quantum dots (CQDs), carbon nanodots (CNDs), and carbonized polymer dots (CPDs). GQDs with one or multiple-layer graphite structure and apparent graphene lattices are generally gained by "top-down" prepared routes: oxidation of cutting bulky graphitized carbon materials. CQDs, CNDs, and CPDs are usually synthesized from biomass, small molecules, or polymers by assembling, polymerization, crosslinking, and carbonization by "bottom-up" routes. CQDs have graphitelike crystal lattices with surface functional groups, showing internal state luminescence and the quantum size confinement. CNDs also have a large number of functional groups on the surface, but the cores of CNDs contain amorphous carbon without apparent crystal lattices. [39] CPDs have unique "core-shell" nanostructures, consisting of carbon cores with Hydrogels have extremely high moisture content, which makes it very soft and excellently biocompatible. They have become an important soft material and have a wide range of applications in various fields such as biomedicine, bionic smart material, and electrochemistry. Carbon dot (CD)-based hydrogels are based on carbon dots (CDs) and auxiliary substances, forming a gel material with comprehensive properties of individual components. CDs embedding in hydrogels could not only solve their aggregation-caused quenching (A...

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Section: Sensingmentioning

confidence: 99%

Section: Applications Of Cd‐based Hydrogelsmentioning

confidence: 99%

Carbon Dot‐Based Hydrogels: Preparations, Properties, and Applications

Wang

Yin

et al. 2023

Small

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“…According to the results of this study, 3DNGH is a great place to conduct future investigations involving PEC biosensors in the fields of medicine and environmental science. To guarantee food safety, it is essential to create portable, measurable, and user-friendly sensors for on-site monitoring of organophosphorus pesticides (OPs) ( Figure 8 ) [ 150 ]. Fluorescent hydrogel sensors based on a carbon dot/cobalt oxyhydroxide (CD/CoOOH) composite are fabricated as a handcrafted, portable supplemental device for precise OPs measurement.…”

Section: Biosensing Applicationsmentioning

confidence: 99%

Fluorescent-Nanoparticle-Impregnated Nanocomposite Polymeric Gels for Biosensing and Drug Delivery Applications

Gandla,

Kumar,

Rajasulochana

et al. 2023

Gels

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Nanocomposite polymeric gels infused with fluorescent nanoparticles have surfaced as a propitious category of substances for biomedical purposes owing to their exceptional characteristics. The aforementioned materials possess a blend of desirable characteristics, including biocompatibility, biodegradability, drug encapsulation, controlled release capabilities, and optical properties that are conducive to imaging and tracking. This paper presents a comprehensive analysis of the synthesis and characterization of fluorescent-nanoparticle-impregnated nanocomposite polymeric gels, as well as their biomedical applications, such as drug delivery, imaging, and tissue engineering. In this discourse, we deliberate upon the merits and obstacles linked to these substances, encompassing biocompatibility, drug encapsulation, optical characteristics, and scalability. The present study aims to provide an overall evaluation of the potential of fluorescent-nanoparticle-impregnated nanocomposite polymeric gels for biomedical applications. Additionally, emerging trends and future directions for research in this area are highlighted.

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“…28 In addition, the use of a hydrogel as a solid matrix provides an inert environment for fluorescence sensing, which improves the stability and anti-interference ability of sensing materials, because it reduces the aggregation of nanomaterials and hinders external macromolecules from entering the external environment. 29 These inspired us to combine fluorescent sensing materials with hydrogel-based sensing platforms to enable tracking of nerve agent gases.…”

Section: Introductionmentioning

confidence: 99%