Background-Free and Reversible Upconversion Hydrogel Sensing Platform for Visual Monitoring of Sulfite

Analytical Chemistry, Journal Year: 2024, Volume and Issue: 96(6), P. 2711 - 2718

Published: Feb. 1, 2024

Excessive sulfite usage in food and pharmaceutical production causes respiratory neurological diseases, underscoring the need for a sensitive rapid quantification strategy. The portable sensing platform based on luminescent hydrogel sensor is powerful tool on-site, real-time detection of ions. However, lack recyclability almost all reaction-based sensors increases application cost. This study constructed reversible upconversion nanoprobe combining nanoparticles (UCNPs) pararosaniline (PAR) detection. was further encapsulated three-dimensional polyacrylamide matrix to create background-free, sensor. near-infrared excitation UCNPs avoids autofluorescence real samples. Meanwhile, PAR serves as specific recognition unit After addition sulfites, reaction occurs between leading recovery characteristic emission at 540 nm, achieving Importantly, this under thermal treatment, allowing return its initial state thus enabling Furthermore, developed realize point-of-care, quantitative proposed provides new strategy hazardous substances offers insights into preparation reversible, highly sensors.

Language: Английский

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Bridging biological and food monitoring: A colorimetric and fluorescent dual-mode sensor based on N-doped carbon dots for detection of pH and histamine

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 470, P. 134271 - 134271

Published: April 10, 2024

Language: Английский

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A multicolor-tunable fluorescent hydrogel for information encryption

Dyes and Pigments, Journal Year: 2024, Volume and Issue: 223, P. 111986 - 111986

Published: Jan. 26, 2024

Language: Английский

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Recent progress in low‐swellable polymer‐based smart photonic crystal sensors

Smart Molecules, Journal Year: 2023, Volume and Issue: 1(3)

Published: Dec. 1, 2023

Abstract Low‐swelling polymers (LSPs) generally refer to materials with a low solvent absorption ratio or volume expansion rate at swelling equilibrium. LSPs exceptional responsiveness could be upgraded smart sensors structural color self‐reporting by bridging photonic crystals (PCs). Based on the regulation of effective refractive index, lattice spacing, order‐disorder arrangement nanostructures, and incident/detection angle, feedback crystal (SPCSs) can quantitatively visually reveal stimulus, which greatly promotes interdisciplinary development nanophotonic technology in fields chemical engineering, science, engineering mechanics, biomedicine, environmental etc. Herein, clarify role structures polymer molecules high‐performance SPCSs, LSP‐based SPCSs are summarized discussed, including general mechanisms, change strategies, design, typical functional applications. It aims figure out combination rule between PC LSPs, optimize design structures, expound corresponding sensing inspiring fabrication next‐generation SPCSs. Finally, perspectives future applications also presented. is believed that multifunctional tools for numerous future.

Language: Английский

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Smart Two-dimensional Photonic Crystal Hydrogel for Accurate Detection of Hg²⁺

Acta Chimica Sinica, Journal Year: 2024, Volume and Issue: 82(1), P. 9 - 9

Published: Jan. 1, 2024

智能二维光子晶体水凝胶精准检测 Hg 2+ 史雨晴 储名珠 韩波 马豪杰 李然 侯雪艳 张玉琦 * 王记江 (延安大学化学与化工学院 陕西省化学反应工程重点实验室 延安市新能源新功能材料重点实验室 陕西 延安 716000) 摘要 结合二维光子晶体的德拜衍射效应和水凝胶的体积相转变特性, 开发了一种智能二维光子晶体水凝胶, 用于精 准检测 .采用"三明治"法制备了聚苯乙烯二维光子晶体阵列嵌入的聚(

Language: Английский

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Visual Sensor with Host–Guest Specific Recognition and Light–Electrical Co‐Controlled Switch

Small, Journal Year: 2024, Volume and Issue: 20(31)

Published: March 8, 2024

Abstract Perception of UV radiation has important applications in medical health, industrial production, electronic communication, etc. In numerous application scenarios, there is an increasing demand for the intuitive and low‐cost detection through colorimetric visual behavior, as well efficient multi‐functional utilization radiation. However, photodetectors based on photoconductive modes or photosensitive materials are not conducive to portable multi‐scene owing their complex expensive components, potential photobleaching, single‐stimulus response behavior. Here, a multifunctional sensor “host–guest photo‐controlled permutation” strategy “lock key” model developed. The host–guest specific molecular recognition electrochromic sensing platform integrated at micro‐molecular scale, enabling convenient fast perception radiation, military camouflage, information erasure macro level human–computer interaction light–electrical co‐controlled switching characteristics. This optoelectronic multi‐mode system expected provide new ideas paradigms healthcare, microelectronics manufacturing, wearable devices its advantages signal visualization, low energy consumption, cost, versatility.

Language: Английский

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β-Cyclodextrin/spiropyran-functionalized optical-driven hydrogel film for bisphenol a detection in food packaging

Food Chemistry, Journal Year: 2024, Volume and Issue: 455, P. 139875 - 139875

Published: May 28, 2024

Language: Английский

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Recent advances in photonic crystal-based chemical sensors

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(69), P. 9177 - 9193

Published: Jan. 1, 2024

The increasing attention towards environmental quality, food safety, public security and medical diagnosis demands high requirements standards for chemical sensors with merits of rapid response, precision, long-term stability reusability. In this case, a prominent innovation in sensory materials holds potential to realize new generations sensor technologies. Specifically, photonic crystals (PCs) as structured dielectric spatially periodic ordered arrangements offer unique advantages improving the sensing performance sensors. Consequently, promising properties PCs promote research on their implementation an integral part This review highlights integration into including range building blocks construction versatile opal or inverse structural architectures delicate choice surface functionality associated interfaces target recognition signal transduction. Subsequently, based synthesis functionality, we focus introducing principles recent advances PC-based sensors, such reflection spectra-based sensing, visual colorimetric fluorescence surface-enhanced Raman spectroscopy (SERS)-based other integrated sensing. Finally, future prospects challenges are discussed further improvement

Language: Английский

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Photonic crystal colorimetric sensing in heart-on-a-chip systems

Current Opinion in Biomedical Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 100578 - 100578

Published: Jan. 1, 2025

Language: Английский

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Cr(VI)-Responsive Ink with Four-Dimensional Printing of an Ultracompact Hydrogel Optical Fiber Microsensor

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Hydrogel is emerging as a promising material for smart sensors due to its remarkable stimuli-responsiveness and biocompatibility. However, traditional methods like ultraviolet curing or imprinting could not yield ultracompact hydrogel microstructures with sophisticated design controllable morphology, posing challenges in developing highly integrated microfluidic sensors. With the advanced femtosecond laser (Fs) direct writing technology, an intelligent optical microsensor prepared real-time monitoring of trace hexavalent chromium ions [Cr(VI)] water. First, Cr(VI)-responsive ink containing 3-acrylamidopropyl-trimethyammonium chloride (ACTC) developed, boasting printing resolution ∼250 nm. Subsequently, fiber-tip Fabry–Perot cavity (FPC) Cr(VI) printed using multimaterial TPP strategy. The sensor shows size (∼100 μm) high specificity detecting liquid samples. detection limit 1.48 × 10–9 M makes it suitable rapidly Cr(VI). on-chip MEMS provides platform environmental protection analytical science fields.

Language: Английский

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