CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Yongying Yang,Yuandong Wu,Dajiang Mei,Yi Qu
The development of luminescent crystal sensors for monitoring temperature changes and recording thermal history is still an interesting challenge because their wide applications in several industrial fields and their good thermal stability in harsh environments. Herein, we report a luminescent crystal sensor based on Lead-based complex for recording the high temperature history (>230 °C). Seven kinds of Lead-based complexes are designed and synthesized under an optimizing strategy for obtaining the crystal luminophores with high emissive brightness. Among them, complexes 1 ( Pb ( 2 , 2 ′ - bipy ) I 2 ), 5 ( Pb ( 1 , 10 - phen ) I 2 ) and 6 ( Pb 1 , 10 - phen 2 I 2 ) show bright luminescence with the maximum emission at 595 nm, 565 nm and 592 nm, all of which use I − as the halide ligand. Thermogravimetric analysis results indicate that 5 and 6 show high degraded temperature at 230 and 330 °C, respectively. Combing with their different emissive colors, the transition process from 6 to 5 can be used to construct a high temperature recorder with the ratiometric response. Further experiments evidence that complex 6 can stably transits into 5 even at 270 °C through the partial degradation of the organic ligand. Notably, the emissive colors vary from orange (CIE coordination: 0.515, 0.472) to yellow (CIE coordination: 0.394, 0.554) that allows easy visualization by naked eyes. We believe that this work provides a stabilization strategy of luminescent complexes and extends their applications in more harsh industrial conditions.
研究领域:
材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
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2014
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IF 3.511
Qingqing Zhang,Ming Zhou
A ratiometric pH probe composed of a fluorescein moiety and an ionic near-infrared-emitting phosphorescent cyclometalated iridium(III) complex bis(6-(benzo[b]thien-2-yl)phenanthridinato)(4-(3-carboxypropyl)-4′-methyl-2,2′-bipyridine)iridium(III) was synthesized. With good cell permeability, the probe demonstrated a linear ratiometric response to the pH variation in the physiological range in HeLa cell assay.
研究领域:
生物化学
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细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
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2019
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IF 2.961
Chengjun Wang,Ying Qian
A red emissive fluorescent probe 1,7-dimethyl-3,5-bis(4-methoxyphenyl-vinyl)-8-(10-n-butyl-10H-phenothiazine-3-yl)BODIPY 1,7-dimethyl-3,5-bis(4-methoxyphenyl-vinyl)-8-(10- n -butyl-10 H -phenothiazine-3-yl)BODIPY (avyl-BODIPY-PTZ) with a special orthogonal donor-acceptor structure was designed and synthesized for rapid, sensitive, and selective discrimination of ClO − , over other reactive oxygen species and anions. The probe displays a linear ratiometric absorption (A 578 /A 640 ) and fluorescence (F 599 /F 660 ) response toward ClO − with a fast response velocity (~10 s). The limit of detection (LOD) for ClO − was obtained as 22.6 nM from the fluorescence titration experiment. The fluorescence enhancement of the probe can be observed from the 32-fold enhancement in ratiometric value (F 599 /F 660 ) and the increasement of quantum yield from 0.01 at 660 nm to 0.28 at 599 nm. The oxidation of S atom in phenothiazine by ClO − to form the sulfoxide-type structure was proposed as the recognizing mechanism according to the Mass spectral analysis. The ratiometric enhancement of fluorescence was rationalized by the theoretical calculations. The orthogonal donor-acceptor structure according to optimized calculation and solvent effects of avyl-BODIPY-PTZ illustrated that the ClO − oxidation induced conversion from the nonradiative TICT process to the radiative LE process and caused the fluorescence ratiometric enhancement. The probe with low cytotoxity can successfully permeate into living cells and the cell images can be achieved in single channel. Moreover, after addition of ClO − , another bright red emission channel of the probe switched on and the probe displayed two-channel emission in living cells.
研究领域:
化学
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生物学
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医学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2018
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IF 5.667
Jianjun Du,Quanyong Gu,Jingyao Chen,Jiangli Fan,Xiaojun Peng
The quantitative recognition of proteins receives great importance in the fields of biology and biomedicine. Though the ratiometric fluorescent probe is a good choice for the quantitative recognition which is less susceptible to the environmental and instrumental interference, very few examples have been reported in the protein identification. In this work, a novel and interesting probe, MY, was developed for the quantitative recognition of serum albumin based on the intramolecular charge transfer (ICT) mechanism. By the structure regulation, the distribution between ICT and twisted ICT state was well controlled. The MY showed a fast, sensitive, and ratiometric response to the serum albumin. Besides, the accurate recognition of serum albumin in practical samples exhibited good recoveries compared with the bromocresol green-based standard method.
研究领域:
生物化学
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分析化学
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医学检测
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
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2021
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IF 4.889
Yingying Zhang,Yanliang Zhao,Bo Song,Chaobo Huang
Acidic pH is an important physiological parameter in environment and biological systems. Thus, designing a probe ( Hcy-F ) with good characters to monitor acidic pH is really important. Herein, a small molecular water-soluble probe is designed based on indole with high selectivity and sensitivity for detection the acidic pH in aqueous solution and living cells. When pH variation of aqueous is detected by probe, an obvious ratiometric and good linear response behavior are found in UV–vis absorption spectrum (R 2 = 0.9973, A 434 nm / A 371 nm = 6.9929–4.2231 pH) and fluorescence emission spectrum (R 2 = 0.9987, I 571 nm / I 514 nm = 7.2935–2.981 pH), which further proved the feasibility of Hcy-F to monitor the change of acidic pH in aqueous, respectively. Furthermore, Hcy-F is successfully applied for monitoring pH variation in living cells in dual channels (green and red) with higher cell survival rate, indicating the probe has great potential for pH imaging in biological applications .
研究领域:
分析化学
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生物化学
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细胞生物学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2020
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IF 7.1
Xiao Xiao,Tingting Wu,Jinxuan Cao,Chunlei Zhu,Yuan Liu,Xin Zhang,Yizhong Shen
Food pollution has aroused increasing public health concerns and poses a huge medical and financial burden today. Here, we report a facile one-pot synthesis of hydrogen sulfide (H 2 S)-responsive near-infrared (NIR) ratiometric fluorescent nanoprobe NIR775/Cy7Cl@HyNPs by encapsulating H 2 S-sensitive organic chromic cyanine dye Cy7Cl and H 2 S-inert fluorophore NIR775 into an amphiphilic phospholipid polymer. Because of the confinement effect of phospholipid layer, the loaded NIR775 and Cy7Cl could be brought in close proximity for fluorescence resonance energy transfer (FRET) to occur, leading to single emission of Cy7Cl at ∼ 810 nm inside nanoprobe NIR775/Cy7Cl@HyNPs. However, with the introduction of H 2 S, the FRET process from NIR775 to Cy7Cl is disrupted due to the stimuli-responsive chromic behavior as a result of H 2 S-triggered nucleophilic, leading to restoring of the fluorescence emission of NIR775 at ∼ 778 nm companied by a remarkable fluorescence decrease of Cy7Cl at ∼ 810 nm, thereby enabling nanoprobe NIR775/Cy7Cl@HyNPs to show a NIR ratiometric response toward H 2 S. As expected, the nanoprobe NIR775/Cy7Cl@HyNPs exhibits a prominent practicability to precisely report the levels of H 2 S in actual food mediums with a wide linear range of 0.0367–120.0 μM, a satisfactory limit detection of 11.0 nM, as well as an excellent specificity over other sulfur-containing substances ( e.g. biothiols). This study emphasizes the promise for utilizing switchable chromic materials to develop a new category of NIR ratiometric fluorescent nanosensors facilitating accurate and reliable measurement in actual food and agriculture-related systems without any pretreatments, which is of great significance for safeguarding food safety and human health.
研究领域:
生物化学
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食品科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Rui Jin,Deshuai Kong,Xu Yan,Xu Zhao,Hongxia Li,Fangmeng Liu,Peng Sun,Yuehe Lin,Geyu Lu
Precise on-site profiling of organophosphate pesticides (OPs) is of significant importance for monitoring pollution and estimating poisoning. Herein, we designed a simple and convenient portable kit based on Ag+-responsive hydrogels for accurate detection of OPs. The newly developed hydrogels employed o-phenylenediamine (OPD) and silicon quantum dots (SiQDs) as indicator, which possessed ratiometric response. In this sensor, OPs as inhibitor of acetylcholinesterase prevented the generation of thiocholine, which blocked the formation of metal–polymer with Ag+, further triggered the oxidation of OPD to yield yellow 2,3-diaminophenazine (DAP) with fluorescence emission at 557 nm. The fluorescence intensity of SiQDs (444 nm) was quenched by DAP through inner filter effect (IFE) process, emerging a typical ratiometric response. Interestingly, the ratiometric signal of kit, which was recorded by smartphone’s camera, can be transduced by ImageJ software into the hue parameter that was linearly proportional to the concentration of OPs. The simplicity of portable kit combined with smartphone operation, which possessed high sensitivity (detection limit <10 ng mL–1) and rapid sample-to-answer detection time (45 min) in agricultural sample, indicating that the methodology offered a new sight for portable monitoring of food safety and human health.
研究领域:
分析化学
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环境科学
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材料科学
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食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
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2023
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IF 3.6
Xue Wen,Chengyue Xin,Wenjun Zhang,Cong Ding,Zhongfa Li
Luminescent dye molecules have attracted enormous research interest, whereas, there are inherent drawbacks that limit their utilization across a broad variety of fields. Herein, a novel dual-luminescent carboxylic acid functionalization Eu 3+ /Hoc@UIO-66(H 3 BTC) (Hoc = 7-hydroxycoumarin) was prepared by introducing luminescent dye molecules (Hoc) into the UiO-66-type dual-ligand metal−organic frameworks (MOFs) utilize the encapsulation approach and postsynthetic modification (PSM). UIO-66(H 3 BTC) was constructed using 1,4-dicarboxybenzene (TPA) as the first ligand, which can restrict the aggregation-induced quenching of Hoc dyes and maintains the Hoc dyes stably included after preparation. 1,3,5-benzenetricar boxylic acid (H 3 BTC) was used as a second ligand to sensitize Eu 3+ ions for the antenna effect emission and provide detection sites. Eu 3+ /Hoc@UIO-66(H 3 BTC) material possesses blue luminescence from Hoc molecules as well as red luminescence from Eu 3+ when irradiated by UV lamp, which can be used for ratiometric luminescence detection of Cu 2+ /Fe 3+ through reference to the intensity ratios of two emitting peaks. Eu 3+ /Hoc@MOFs(H 3 BTC) as a luminescence sensor, displays an ultrahigh sensitivity (Cu 2+ :4.58 μM, Fe 3+ :18 μM), strong ant-interference ability, and fast response for detecting analytes. This project demonstrates that the dual-ligand Zr-based MOFs and luminescence dyes offers a novel ratiometric luminescence detection platform for heavy metal ions visible identification.
研究领域:
材料科学
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分析化学
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纳米技术
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传感器
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
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IF 7.46
Yizhong Shen,Yunlong Wei,Huanhuan Chen,Zeyu Wu,Yingwang Ye,De-Man Han
Reliable on-site monitoring of antibiotic residue is critical to establish the efficient pollution early-warning mechanism for ensuring food safety and environmental health . Herein, we reported the engineering of liposome-encapsulated aggregation-induced emission fluorogen into the portable smartphone for achieving the visual on-site detection of residual tetracycline (TC). Through nanoprecipitation, the aggregation-induced emission fluorogen (AIEgen) tetraphenylethene (TPE) was encapsulated into an amphiphilic phospholipid polymer, affording a scaffold to assemble Eu 3+ for forming Eu 3+ -functionalized liposome-based AIEgen (Eu 3+ @AIEgen) with bright blue fluorescence at ~456 nm. Upon assistance of citrate, TC was capable of triggering the remarkable fluorescence color change from bright blue (~456 nm) to pink owing to the new red fluorescence emission appeared at ~611 nm, thereby emerging a significant dual-emission for ratiometric response. As expected, an ingenious citrate-assisted Eu 3+ @AIEgen liposome-based smartphone was proposed to precisely on-site report the residual levels of TC in real sample among the linear range of 0.0961–10.0 μM. Furthermore, this portable sensor exhibited a high sensitivity attributable to the low detection limit of 28.83 nM together with a fast response kinetics of 2.0 min for TC, agreeing well with the demands of on-site assay. This study showed the promising potential for utilizing AIEgen liposome to develop a new category of portable sensors for the point-of-care detection of antibiotic residue in complicated food and environment-related matrixes, which might open a novel way to establish efficient pollution early-warning mechanism for safeguarding public health.
研究领域:
分析化学
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环境科学
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食品安全
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生物技术
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公共卫生
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）