Ratiometric electrochemical sensor for accurate detection of salicylic acid in leaves of living plants

Yang, Lei; Chen, Da; Wang, Xiaodong; Luo, Bin; Wang, Cheng; Gao, Guangheng; Li, Hongji; Li, Aixue; Chen, Liping

doi:10.1039/d0ra05813k

Cited by 27 publications

(7 citation statements)

References 40 publications

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“…The modification of GO can make it have the ability to form chemical bonds with PCM systems [35,36]. Pielichowska et al [37] prepared polyurethane-based PCMs containing polyethylene glycol fragments with an average molar mass of 8000 g/mol, and found that the phase change heat and crystallinity of the 0.3% graphite nanosheet modified system were the highest in polyurethane without chain extender.…”

Section: Introductionmentioning

confidence: 99%

A polyurethane solid-solid composite phase change material based on modified graphene oxide for efficient thermal management

Yang,

Liao,

et al. 2024

J. Phys.: Conf. Ser.

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Solid-solid phase change materials (SSPCMs) are potential materials for energy storage and thermal management, and improving mechanical property and heat transfer performance is the key to practical application. After modified graphene oxide (TGO) was prepared by toluene diisocyanate, a kind of super-tough, form-stable and leak-proof polyurethane composite phase change material (PU-TGO) was constructed by the two-step polymerization of isophorone diisocyanate and 1, 4-butanediol using polyethylene glycol and TGO. TGO has more uniform and stable dispersion than traditional graphene oxide, and its chemical crosslinking with polyurethane phase change materials makes the composite have better shape stability, mechanical strength, thermal conductivity and flexibility. PU-TGO has thermal conductivity and elongation at break up to 0.3072 W/(m•K) and 540%, respectively, and maintains excellent thermal stability and 72.09 J/g enthalpy after 500 thermal cycles. PU-TGO prepared by chemical crosslinks in this paper further demonstrates the great potential of phase change materials in the field of thermal management of new electronic devices.

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Section: Introductionmentioning

confidence: 99%

A polyurethane solid-solid composite phase change material based on modified graphene oxide for efficient thermal management

Yang,

Liao,

et al. 2024

J. Phys.: Conf. Ser.

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“…Although flexible electrochemical sensors have been reported in the literature for monitoring phytohormones 44 – 47 , the research field is still in its infancy and little to no research has been conducted on developing an integrated hybrid sensing system for real-time quantification of volatile and liquid phytohormones and VPD levels along with the radial growth of stem for early diagnosis of crop stress. This work reports the first-of-its-kind integrated, flexible, and multiparametric sensor suite that enables continuous and non-destructive monitoring of a plant’s physiology with spatiotemporal fidelity.…”

Section: Introductionmentioning

confidence: 99%

A hybrid multifunctional physicochemical sensor suite for continuous monitoring of crop health

Hossain

Tabassum

2023

Sci Rep

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This work reports a first-of-its-kind hybrid wearable physicochemical sensor suite that we call PlantFit for simultaneous measurement of two key phytohormones, salicylic acid, and ethylene, along with vapor pressure deficit and radial growth of stem in live plants. The sensors are developed using a low-cost and roll-to-roll screen printing technology. A single integrated flexible patch that contains temperature, humidity, salicylic acid, and ethylene sensors, is installed on the leaves of live plants. The strain sensor with in-built pressure correction capability is wrapped around the plant stem to provide pressure-compensated stem diameter measurements. The sensors provide real-time information on plant health under different amounts of water stress conditions. The sensor suite is installed on bell pepper plants for 40 days and measurements of salicylic acid, ethylene, temperature, humidity, and stem diameter are recorded daily. In addition, sensors are installed on different parts of the same plant to investigate the spatiotemporal dynamics of water transport and phytohormone responses. Subsequent correlation and principal component analyses demonstrate the strong association between hormone levels, vapor pressure deficit, and water transport in the plant. Our findings suggest that the mass deployment of PlantFit in agricultural settings will aid growers in detecting water stress/deficiency early and in implementing early intervention measures to reduce stress-induced yield decline.

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“…[2][3][4] Although simple colorimetric tests were developed using metal salts such as ferric chloride, [5] such methods lack sensitivity or specificity. Some recent work also used electrochemistry, [6] and surfaceenhanced Raman spectroscopy. [7] These methods rely on the intrinsic redox and molecular vibrational properties of SA, and are susceptible to interference in complex sample matrix.…”

Section: Introductionmentioning

confidence: 99%

Capture‐SELEX for a short aptamer for label‐free detection of salicylic acid

Gu,

Zhang,

Ding

et al. 2023

Smart Molecules

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Salicylic acid (SA) is a hydrolysis product and an active form of aspirin, and SA is found in a range of fruits and other food products. For food and drug and analysis there is a strong desire to detect SA. Since SA is a very small molecule, aptamers have advantages over antibodies for its detection. In this work, we used the library‐immobilization capture‐SELEX method to isolate aptamers for SA. After 17 rounds of selection, two main families of aptamers were isolated. The SA1 aptamer from family 1 has a Kd of 5.8 μM from a thioflavin T (ThT) fluorescence assay and 26.7 μM from isothermal titration calorimetry. The binding of other sequences was weaker compared to SA1. Based on mutation studies, the two conserved regions of SA1 were connected by two stems. Using ThT as a stain, a label‐free fluorescent sensor was tested for the detection of SA with a detection limit of 2.2 μM. A few similar molecules were tested including aspirin, and only p‐hydroxybenzoic acid showed a weak binding, indicating the high specificity of the SA1 aptamer. Finally, the SA1 aptamer was also tested in tomato juice and a similar binding performance was achieved.

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Ratiometric electrochemical sensor for accurate detection of salicylic acid in leaves of living plants

Abstract: This is the first report on developing a ratiometric electrochemical sensor for detecting SA in the leaves of living plants.

Cited by 27 publications

References 40 publications

A polyurethane solid-solid composite phase change material based on modified graphene oxide for efficient thermal management

A polyurethane solid-solid composite phase change material based on modified graphene oxide for efficient thermal management

A hybrid multifunctional physicochemical sensor suite for continuous monitoring of crop health

Capture‐SELEX for a short aptamer for label‐free detection of salicylic acid

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