ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Jie Zhang,Meng-Ping Ren,Man Xu,Zhonghui Zhang,Mingxue An,Yang Lu,Xiao-Wu Lei,Zhongliang Gong,Cheng-Yang Yue
A quantitative water detection method is urgently needed in storage facilities, space exploration, and the chemical industry. Although numerous physical techniques have been widely utilized to determine the water content, they still suffer from many disadvantages such as highly expensive special instruments, complicated analysis processes, etc. Hence, a convenient, rapid, and sensitive water analysis method is highly desirable. Herein, we developed a visual fluorescence sensing technology for water detection based on reversible PL off-on switching of organic–inorganic hybrid zero-dimensional (0D) manganese halides. In this work, a family of hybrid manganese halides were synthesized through a facile solution method, namely, [NH4(18-Crown-6)]2MnBr4, [Ca(18-Crown-6)·3H2O](18-Crown-6)MnBr4, [NH4(dibenzo-18-Crown-6)]2MnBr4, and [Ca(dibenzo-18-Crown-6)·2H2O]MnBr4. Excited by UV light, these highly crystalline manganese halides exhibit strong green light emissions from the d–d electron transition of Mn2+ with near-unity photoluminescence quantum yield and submillisecond lifetime. Benefiting from the dynamic and weak ionic bonding interactions, these 0D manganese halides display reversible water-response on/off luminescence switching but fail in any other aprotic solvents. Therefore, these 0D hybrid manganese halides can be explored as ultrafast visual fluorescence probes to detect the trace amount of water in organic solvents with multiple superiorities of rapid response time (< 2 s), ultralow detection limit (9.71 ppm), excellent repeatability, etc. The reversible water-response luminescent on/off switching also provides a binary optical gate with advanced applications in anticounterfeiting and information security, etc.
研究领域:
材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jian-Qiang Zhao,Hua-Sen Shi,Le-Ran Zeng,Hui Ge,Yu-Han Hou,Xiao-Min Wu,Cheng-Yang Yue,Xiao-Wu Lei
Storage and protection of confidential information is an increasing challenge for global digital economy, which stimulates the never-ending pursuit of high-security technology to prevent information forgery and leakage. Herein, we develop a novel approach to realize controllable information encryption-decryption based on reversible photoluminescence (PL) on/off switch in 0D hybrid antimony halide. A new 0D [DPA] 3 SbCl 6 (DPA = dipropylamine) was designed as broadband green light emitter with near-unity photoluminescence quantum yield. Benefiting from invisible and non-luminescent superiorities of SbCl 3 , information encrypted by SbCl 3 pattern can′t be directly decoded upon common light excitations. Under the trigger of [DPA]Cl salt, superfast transition from SbCl 3 to [DPA] 3 SbCl 6 gives rise to highly efficient emission and thus effective information decoding. Subsequently, through methanol impregnation and desolvation strategy, luminescence of [DPA] 3 SbCl 6 can be easily quenched and recovered resulting in reversible PL on/off switching. The multiple and controllable PL emission conversion provides a dual-mode confidential information encryption-decryption technology.
研究领域:
材料科学
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光学
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信息安全
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xianhang Yan,Yanxin Wang,Bingyang Li,Zhenzhen Huang,Zhiyuan Gao,Xinhui Mao,Wei Wang,Zhijun Zhu,Matt J. Kipper,Linjun Huang,Jianguo Tang
Cu 2+ contamination in drinking water poses a threat to humans and the environment, and high concentrations of Cu 2+ in human blood can induce disease. In recent years, fluorescence sensing of Cu 2+ prepared from rare earth elements has been widely used for the accurate detection and quantification of Cu 2+ . In this paper, we report that europium (Eu), 4,4′,4-trimethyltriphenylamine (TTA), and 1,10-phenanthroline (Phen) undergo a complexation reaction to form the Eu(TTA) 3 Phen complex, which is loaded on SiO 2 nanoparticle to form SiO 2 @Eu 3+ . We use electrospinning of SiO 2 @Eu 3+ and polyacrylonitrile (PAN) co-blended solutions to prepare PAN fluorescent nanofiber membranes (FPNM). FPNM are hydrolyzed hydrolysis to obtain Cu 2+ sensors (HFPNM). The super hydrophilic surface of HFPNM undergoes fluorescence quenching upon contact with Cu 2+ . HFPNM is capable of accurately detecting 100–1000 nmol/L of Cu 2+ . Moreover, EDTA can be used as a reversible on/off switch for detection, and HFPNM can still be used as a Cu 2+ sensor after 5 cycles of use. The HFPNM have the advantages of high detection sensitivity and environmental friendliness for recycling compared to other Cu 2+ sensors. Fluorescent nanofibers can be combined with bio-nanotechnology allowing for promising future applications in Cu 2+ detection and wearable smart fabrics.
研究领域:
材料科学
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环境科学
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生物医学工程
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DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2018
·Vol. 20
·期 45
·28644-28648
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IF 3.906
Mengxin Zhao,Yang Tao,Wei Huang,Yi He
Although the enzyme-like activities of MnO2 nanosheets have been investigated, effective strategies for modulating their activities are still lacking. Herein, inspired by the pH-dependent activity of natural enzymes, we demonstrate that the oxidase-like activities of the MnO2 nanosheets are pH switchable and reversible. The MnO2 nanosheets show oxidase-like activities in an acidic medium, which can catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to form blue oxidized TMB (oxTMB), while the corresponding activities are greatly weakened under alkaline conditions. The reaction mechanism is attributed to the fact that the MnO2 nanosheets can be transformed into hexagonal Na4MnO4 with a low reaction activity in an alkaline environment. Using the pH switchable oxidase-like activities of the MnO2 nanosheets and other reaction processes, we construct a visual three-input molecular majority logic gate with a single-vote veto function. In addition, an OR-INH cascade logic circuit is successfully realized as well.
研究领域:
生物化学
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纳米生物学
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分析化学
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DOI
PubMed
高影响因子
Nature Communications
·
2017
·Vol. 8
·期 1
·1-9
·
IF 12.124
Zhang Congyang,Wang Bo,Li Wanbin,Huang Shouqiang,Kong Long,Li Zhichun,Li Liang
Traditional smart fluorescent materials, which have been attracting increasing interest for security protection, are usually visible under either ambient or UV light, making them adverse to the potential application of confidential information protection. Herein, we report an approach to realize confidential information protection and storage based on the conversion of lead-based metal-organic frameworks (MOFs) to luminescent perovskite nanocrystals (NCs). Owing to the invisible and controlled printable characteristics of lead-based MOFs, confidential information can be recorded and encrypted by MOF patterns, which cannot be read through common decryption methods. Through our conversion strategy, highly luminescent perovskite NCs can be formed quickly and simply by using a halide salt trigger that reacts with the MOF, thus promoting effective information decryption. Finally, through polar solvents impregnation and halide salt conversion, the luminescence of the perovskite NCs can be quenched and recovered, leading to reversible on/off switching of the luminescence signal for multiple information encryption and decryption processes.
研究领域:
材料科学
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光学工程
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信息安全
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Zhen-Qiang Shi,Yu-Ting Cai,Jie Deng,Wei-Feng Zhao,Chang-Sheng Zhao
A facile method to construct reversible thermoresponsive switching for bacteria killing and detachment was currently developed by host–guest self-assembly of β-cyclodextrin (β-CD) and adamantane (Ad). Ad-terminated poly(N-isopropylacrylamide) (Ad-PNIPAM) and Ad-terminated poly[2-(methacryloyloxy)ethyl]trimethylammonium chloride (Ad-PMT) were synthesized via atom transfer radical polymerization, and then assembled onto the surface of β-CD grafted silicon wafer (SW-CD) by simply immersing SW-CD into a mixed solution of Ad-PNIPAM and Ad-PMT, thus forming a thermoresponsive surface (SW-PNIPAM/PMT). Atomic force microscopy (AFM), X-ray photoelectron spectrometry (XPS), and water contact angle (WCA) analysis were used to characterize the surface of SW-PNIPAM/PMT. The thermoresponsive bacteria killing and detachment switch of the SW-PNIPAM/PMT was investigated against Staphyloccocus aureus. The microbiological experiments confirmed the efficient bacteria killing and detachment switch across the lower critical solution temperature (LCST) of PNIPAM. Above the LCST, the Ad-PNIPAM chains on the SW-PNIPAM/PMT surface were collapsed to expose Ad-PMT chains, and then the exposed Ad-PMT would kill the attached bacteria. While below the LCST, the previously collapsed Ad-PNIPAM chains became more hydrophilic and swelled to cover the Ad-PMT chains, leading to the detachment of bacterial debris. Besides, the proposed method to fabricate stimuli-responsive surfaces with reversible switches for bacteria killing and detachment is facile and efficient, which creates a new route to extend the application of such smart surfaces in the fields requiring long-term antimicrobial treatment.
研究领域:
材料科学
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生物医学工程
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抗菌技术
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DOI
PubMed
高影响因子
ACS Sensors
·
2019
·
IF 6.944
Xu Jie,Haimei Yang,Yuchen Su,Zhining Xia,Weili Wei
Fluorescent microscopic imaging with the help of small-molecule probes (chemoprobes) is one of the most feasible approaches for noninvasive sensing of intracellular molecules. However, the “always on” property of current chemoprobes failed to achieve time-resolved monitoring. Here, we report the development of a supramolecular nanoassembling strategy to integrate multiple functions on one nanoscale probe (nanoprobe) with a cyclical on–off switchable sensing ability. The reversal of the nanoprobe can be rapidly achieved by converting the single-wavelength near-infrared (NIR) laser to two-way emissions by a lanthanum nanoparticle core that is sensitive to the light power density. Through regulating the NIR power density, the azobenzene derivative, which was doped in the surface of the lipid bilayer of the nanoprobe, can act as an “impeller” and “brake” for bio-benign activation and deactivation, respectively, of the nanoprobe in biological applications. A reduced nicotinamide adenine dinucleotide nanoprobe was constructed as the model to demonstrate precise and time-resolved monitoring of intracellular processes including cancerous glycolysis and ligand-induced enzymatic processes. We envision that this cyclical on–off switchable nanoprobe strategy will hold great promise for endowing universal chemoprobes with high precision and temporal resolution.
研究领域:
生物医学工程
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化学传感
·
分子影像学
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DOI
PubMed
高影响因子
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