Nanoporous naphthalene diimide surface enhances humidity and ammonia sensing at room temperature

Ali, Salman; Jameel, Mohammed; Harrison, Christopher J.; Shafiei, Mahnaz; Langford, Steven J.

doi:10.1016/j.snb.2021.130972

Cited by 30 publications

(21 citation statements)

References 65 publications

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“…Repeatable ∆ R / R 0 signals are monitored during furrow-and-frown alternating movements, as shown in Figure 7 a. In addition, breathing is a significant vital sign that helps assess health conditions, such as sleep quality and mood changes, which can be assessed by monitoring the airflow during breathing [ 29 , 30 ]. In Figure 7 b, IHSS is placed on the vent of a commercial mask to detect the breathing flow.…”

Section: Resultsmentioning

confidence: 99%

Mechanically Interlocked Hydrogel–Elastomer Strain Sensor with Robust Interface and Enhanced Water—Retention Capacity

Zhao

Lin

Wang

et al. 2022

Gels

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Hydrogels are stretchable ion conductors that can be used as strain sensors by transmitting strain-dependent electrical signals. However, hydrogels are susceptible to dehydration in the air, leading to a loss of flexibility and functions. Here, a simple and general strategy for encapsulating hydrogel with hydrophobic elastomer is proposed to realize excellent water-retention capacity. Elastomers, such as polydimethylsiloxanes (PDMS), whose hydrophobicity and dense crosslinking network can act as a barrier against water evaporation (lost 4.6 wt.% ± 0.57 in 24 h, 28 °C, and ≈30% humidity). To achieve strong adhesion between the hydrogel and elastomer, a porous structured thermoplastic polyurethane (TPU) is used at the hydrogel-elastomer interface to interlock the hydrogel and bond the elastomer simultaneously (the maximum interfacial toughness is over 1200 J/m2). In addition, a PDMS encapsulated ionic hydrogel strain sensor is proposed, demonstrating an excellent water-retention ability, superior mechanical performance, highly linear sensitivity (gauge factor = 2.21, at 100% strain), and robust interface. Various human motions were monitored, proving the effectiveness and practicability of the hydrogel-elastomer hybrid.

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Section: Resultsmentioning

confidence: 99%

Mechanically Interlocked Hydrogel–Elastomer Strain Sensor with Robust Interface and Enhanced Water—Retention Capacity

Zhao

Lin

Wang

et al. 2022

Gels

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show abstract

“…Further developments are needed for microfluidics-based gas sensors to make it to commercial markets. New 2D materials such as MXenens [ 62 ] and organic materials such as naphthalene diimides [ 63 ] and perylene diimides [ 1 ], which are found to be promising sensing materials, need to be incorporated into microfluidics-based gas sensors to increase the sensitivity. Microfluidics-based gas sensors can be used to detect the low concentration of target analytes in low volume of gas samples which is not explored by the researchers.…”

Section: Practical Approaches Toward Using Microfluidics-based Device...mentioning

confidence: 99%

Microfluidic Gas Sensors: Detection Principle and Applications

et al. 2022

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With the rapid growth of emerging point-of-use (POU)/point-of-care (POC) detection technologies, miniaturized sensors for the real-time detection of gases and airborne pathogens have become essential to fight pollution, emerging contaminants, and pandemics. However, the low-cost development of miniaturized gas sensors without compromising selectivity, sensitivity, and response time remains challenging. Microfluidics is a promising technology that has been exploited for decades to overcome such limitations, making it an excellent candidate for POU/POC. However, microfluidic-based gas sensors remain a nascent field. In this review, the evolution of microfluidic gas sensors from basic electronic techniques to more advanced optical techniques such as surface-enhanced Raman spectroscopy to detect analytes is documented in detail. This paper focuses on the various detection methodologies used in microfluidic-based devices for detecting gases and airborne pathogens. Non-continuous microfluidic devices such as bubble/droplet-based microfluidics technology that have been employed to detect gases and airborne pathogens are also discussed. The selectivity, sensitivity, advantages/disadvantages vis-a-vis response time, and fabrication costs for all the microfluidic sensors are tabulated. The microfluidic sensors are grouped based on the target moiety, such as air pollutants such as carbon monoxide and nitrogen oxides, and airborne pathogens such as E. coli and SARS-CoV-2. The possible application scenarios for the various microfluidic devices are critically examined.

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“…Naphthaldiimides (NDI) is a class of planar and aromatic n-type organic compounds with high redox activity ( Kuang et al, 2019 ) 13 . The NDI-based molecules are commonly used in organic electronic devices, such as organic photovoltaic cells ( Liu et al, 2020 ) 14 , organic field-effect transistors ( Park et al, 2022 ) 15 and sensors ( Ali et al, 2022 ) 16 in previous studies. In addition to its small molecular weight and easy modification, NDI also has excellent electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

A low-cost naphthaldiimide based organic cathode for rechargeable lithium-ion batteries

Wang

Zhang

et al. 2022

Front. Chem.

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Recently, the development of cathode materials is becoming an important issue for lithium-ion batteries (LIBs). Compared with inorganic cathodes, the organic cathodes are developing rapidly, ascribing to their distinct merits in light weight, low cost, massive organic resources and high capacity. In this paper, a cost-efficiency naphthaldiimide (NDI) based derivative, 2,7-bis(2-((2-hydroxyethyl) amino) ethyl) benzo[lmn] [3,8] phenanthroline-1,3,6,8(2H, 7H)-tetraone (NDI-NHOH), was used as organic cathode in LIBs. The NDI-NHOH was synthesized easily via one-step process, and it showed very high thermal stability. Through mixing NDI-NHOH with acetylene black and polyvinylidene fluoride (weight ratio of 6:3:1) as composite cathode in lithium-metal based LIBs, the NDI-NHOH presented versatile electrochemical properties. From cyclic voltammetry (CV) test, it exhibited two reversible peaks for oxidation and reduction in the first cycle, respectively. Notably, the oxidation and reduction peaks were located at 2.54, 3.22 and 2.14, 2.32 V vs. Li+/Li, respectively. By employing NDI-NHOH as cathode, it demonstrated a specific capacity of about 80 mAh g−1 in the range of 1.5–3.5 V, where the batteries retained a capacity retention of 50% over 20 cycles. According to the LIBs study, it suggests that the NDI-NHOH-based derivative shows a potentially promising candidate as efficient organic cathode materials for high-performance metal-ions batteries.

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Nanoporous naphthalene diimide surface enhances humidity and ammonia sensing at room temperature

Cited by 30 publications

References 65 publications

Mechanically Interlocked Hydrogel–Elastomer Strain Sensor with Robust Interface and Enhanced Water—Retention Capacity

Mechanically Interlocked Hydrogel–Elastomer Strain Sensor with Robust Interface and Enhanced Water—Retention Capacity

Microfluidic Gas Sensors: Detection Principle and Applications

A low-cost naphthaldiimide based organic cathode for rechargeable lithium-ion batteries

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