MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Zhongshuai Zhao,Ran Li,Ying Zhu,Zhongde Liu
Hydrogen sulfide (H 2 S), playing unique role on signal transmission in various physiological processes, the rapid and accurate monitoring of it is particularly concerned. The drawbacks of fluorescence probe for H 2 S, namely poor selectivity or long response time, have always existed. As a test case, here headspace separation combined fluorescence strategy was attempted, on basis of H 2 S stimuli-responsive AMP/Tb 3+ /Ag + or GMP/Tb 3+ /Ag + coordination polymer probes. The fluorescence intensity of them is inversely proportional to the concentration of it, due to Ag-S in situ coordination and partial formation of Ag 2 S. Using the hybrid analysis, a quick response of less than 2.0 min and a high selectivity could be obtained. The signal change (Δ I ) of AMP/Tb 3+ /Ag + or GMP/Tb 3+ /Ag + showed good linearity within the range of 0.5–100 μM and 1.0–150 μM, along with a detection limit (3 σ ) of 0.2 and 0.4 μM, respectively. When utilized to determine the sulfide level in real samples, it shows recoveries from 96.4 % to 102.3 % with relative standard derivation ( RSD ) less than 3.0 %. The combination strategy of headspace separation and fluorescence quantitative analysis was verified to effectively eliminate potential interference such as other coexisting non-volatile thiol-containing species, providing a novel avenue to flexibly design the volatile component analysis with high selectivity in complex sample matrixes.
研究领域:
分析化学
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环境科学
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生物化学
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材料科学
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产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
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2015
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IF 6.409
Qiang Chen,Junfeng Zuo,Jinfeng Chen,Ping Tong,Xiujuan Mo,Lan Zhang,Jianrong Li
In this paper, a novel label-free fluorescent biosensor for terbium (ш) (Tb 3+ ) was proposed based on structural conversion of G-quadruplex DNA mediated by Thioflavin T (ThT) and Tb 3+ . In the presence of K + , ThT could bind to K + -stabilized parallel G-quadruplex, giving rise to high fluorescence intensity . Upon the addition of Tb 3+ , Tb 3+ could competitively bind to parallel G-quadruplex leading to the structural change, which resulted in fluorescence decrease. The change of fluorescence intensity (Δ F = F 0 – F ) showed a good linear response toward the concentration of Tb 3+ over the range from 1.0 pM to 10.0 µM with a limit of detection of 0.55 pM. This proposed biosensor was simple and cost-effective in design and in operation with ultrahigh sensitivity and selectivity . Thus, the proposed biosensor could be a promising candidate for monitoring ultratrace Tb 3+ in environment.
研究领域:
生物化学
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环境科学
✓ 已验证
DOI
高影响因子
Science China-Technological Sciences
·
2022
·Vol. 65
·期 5
·1043-1051
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IF 3.903
Yang Sen,Pan XiaoRui,Tang JianPu,Yao Chi,Yang DaYong
Supramolecular DNA hydrogels have been synthesized based on the assembly of DNA building-blocks such as branched DNA and long DNA chains. The structures and functions of sole-module DNA hydrogels remain limitations. New methodologies by integrating hybrid components are desired to expand the synthesis of DNA hydrogel. Herein, we synthesized a Ln 3+ -containing luminescent supramolecular hydrogel by employing the coordination and electrostatic interactions between lanthanide ions (Tb 3+ and Eu 3+ ) and linear single-stranded DNA (ssDNA). Through the coordination between ssDNA and Ln 3+ , a series of luminescent supramolecular hydrogels were synthesized, among which the Tb-G n /T n and Eu-T n hydrogels emitted the characteristic luminescence of Tb and Eu, respectively. The luminescent intensities of the hydrogels were adjusted by designing DNA sequences with programmable bases and chain lengths. Notably, the Tb/Eu co-doped luminescent supramolecular hydrogel displayed tunable luminescence from green to yellow by regulating the stoichiometric ratio of Tb/Eu. Moreover, the hydrogel had reversible luminescent stimulation responsiveness toward Ag + /L-Cys. We expected that the synthesis of Ln 3+ -containing luminescent supramolecular hydrogels enriched the strategies of the construction of DNA hydrogels, and promoted the development of stimuli-responsive supramolecular materials.
研究领域:
材料科学
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化学
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纳米技术
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生物物理
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产品关联
DOI
高影响因子
OPTICAL MATERIALS
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2024
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IF 3.8
Renjie Jiang,Jie Chen,Mingqin Li,Yanna Tian,Shiji Shen,Xuan Yang,Yanru Tang,Yan Sun,Hui Lin,Shengming Zhou
Ce: YAG- Al 2 O 3 composite ceramics are regarded as highly promising materials for laser illumination application due to their high luminous efficacy and thermal stability. Nevertheless, the Ce: YAG ceramics exhibit limited color rendering index (CRI) for indoor lighting due to their low red emission component. In this study, we synthesized high-performance Ce, Mn-doped (Y, Tb) 3 Al 5 O 12 –Al 2 O 3 composite ceramic phosphors via a vacuum solid-state sintering method. It was observed that the introduction of Mn 2+ ions created a second luminescence center with an emission peak centered at 580 nm. As the Mn 2+ concentration increased, the emission peak redshifted from 580 nm to 591 nm, leading to a significant enhancement in the color rendering index of the ceramics. The cross-energy transfer between Tb 3+ and Mn 2+ , Ce 3+ ions augmented the absorption and conversion of blue light by the ceramics, thereby reducing the correlated color temperature greatly. Based on these findings, ceramics with a Ce 3+ concentration of 3 at% and a Mn 2+ concentration of 4 at% exhibited the highest CRI values (81.3 and 75.6) under both laser excitation and LED excitation, establishing them as strong candidates for achieving high color rendering in white LED/LD illumination applications.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
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IF 3.7
Zixuan Zhou,Yuhan Jiang,Xin Luo,Ying Zhang,Lei Wang,Yaguang Sun,Jingwei Liu,Mingchang Zhu,Jinchao Cao,Shuangyan Wu
Milk, owing to its nutritional value, is a staple commodity in daily life. Ensuring its integrity and authenticity is paramount for researchers and the food industry. To evaluate spoilage and adulteration of milk, we proposed a robust and reliable optical method to guarantee milk quality by utilizing riboflavin as an internal biomarker. By precisely controlling the content of Eu 3+ , Tb 3+ , and Gd 3+ ions, a two-dimensional ratiometric luminescence lanthanide coordination polymer (Ln-CP) with adjustable emission centers was synthesized for the detection of riboflavin (RF), leveraging a Förster resonance energy transfer (FRET) and photoinduced electron transfer (PET) process. This method demonstrates high sensitivity and selectivity towards RF and has been successfully applied to the detection of RF in both milk and calf serum.
研究领域:
分析化学
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食品科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
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2024
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IF 3.3
Xiaowei Deng,Shanshan Cheng,Xu Chen,Meng Wang,Xu Li,Gaoqiang Li,Dongyang Zhu,Mochen Jia,Xinjian Li,Zhifeng Shi
Lead-free perovskite is a non-toxic and environmentally friendly material, which plays an increasingly significant role in photodetection, luminescence, photovoltaics and so on. In this paper, a single-component white light emission is successfully achieved through the co-doping of Sb 3+ , Mn 2+ and Tb 3+ in Cs 2 NaInCl 6 . The photoluminescent mechanism is proved through the spectra measurements and decay dynamics. The addition of Sb 3+ could activate the self-trapped exciton (STE) emission of the matrix (blue light at 450 nm). The efficient energy transfer from STE emission could realize red light emission of Mn 2+ , and green light emission of Tb 3+ . The single-component white light emission is obtained with the Commission Internationale de L'Eclairage of (0.31, 0.35), high color rendering index of 88.1 and correlated color temperature of 6394 K. Finally, the prepared white light emitting diodes demonstrate high performance and excellent stability. This provides a new idea for development of lead-free perovskite white luminescent materials in display and lighting applications.
研究领域:
材料科学
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光子学
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光电
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2021
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IF 6.558
Qingfan Ren,Peipei Yang,Jiamin Liu,Yuying Chen,Sixue Ouyang,Ying Zeng,Peng Zhao,Jia Tao
Lanthanide-functionalized porous organic materials have been the promising candidates in the chemical and biological sensing. Considering the superior thermal and solvent stability of covalent organic frameworks (COFs), the development of lanthanide ions-functionalized COFs based sensing platform is meaningful, while remains to be a challenge. In this work, a new imine-linked COF which provides suitable coordination sites for Tb 3+ was constructed via the Schiff base reaction between P-phenylenediamine (Pda) and 2,6-Diformylpyridine (Dfp). Benefiting from its high signal-to-noise, the [email protected] shows excellent ability to determinate ciprofloxacin (CIP) with a detection limit of 3.01 nM. The measurement can maintain good stability in the presence of potential interference or in actual sample. Being washed with ethanol after each measurement, [email protected] can be recycled for five times. This work provides a novel alternative strategy for efficient construction of lanthanide-grafted COFs and may promote the development of porous organic materials based chemical sensing.
研究领域:
材料科学
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分析化学
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生物传感
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Binbin Zhang,Qilin Zhong,Yuhang Xie,Linfeng Hu,Yujie Wang,Guangyue Bai
Many lanthanide complexes do not form gel or even exhibit characteristic luminescence of lanthanide ions, which limits their applications in many fields. Therefore, there is an urgent need for a third component that can not only promote emission but also gel the lanthanide complex system to construct new smart materials such as time-dependent information encryption and anti-counterfeiting materials. Herein, a luminescent lanthanide metallogel was successfully prepared by using the third component sodium carboxymethyl cellulose (NaCMC) to induce the gelation and luminescence of the complex (H 3 L/Tb 3+ ) of 4,4′,4″-((benzene-1,3,5-tricarbonyl)tris(azanediyl)) tris(2-hydroxybenzoic acid) (H 3 L) and Tb 3+ . The H 3 L/Tb 3+ complex itself does not form gel and has no characteristic luminescence of Tb 3+ . Moreover, the multicolor emission of H 3 L/Tb 3+ /NaCMC gels was prepared based on Förster resonance energy transfer (FRET) platforms to obtain a high-security level information encryption and anti-counterfeiting materials. These multicolor emission gels exhibit emission color tunability with time dependence due to the different energy transfer efficiencies at each pH node controlled by glucono-δ-lactone hydrolysis time. Based on the time response characteristics, the time-dependent information encryption and anti-counterfeiting materials are developed.
研究领域:
材料科学
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化学
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光学
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安全材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
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IF 16.744
Xuezhen Feng,Chao Wang,Shibin Shang,He Liu,Xujuan Huang,Jianxin Jiang,Haibo Zhang
The development of stimulus-responsive materials with multifunctionality is important for achieving bionic artificial intelligence. However, stimulus-responsive cellulose hydrogels that simultaneously change their shape and fluorescent color under a single stimulus are difficult to fabricate. Here smart, multicolor fluorescent cellulose hydrogels were prepared from cellulose, levofloxacin, epichlorohydrin, and lanthanide ions (Eu 3+ or Tb 3+ ). The hydrogels were incorporated with pan paper into synergetic color-changing and shape-morphing actuators (Eu-CLF and Tb-CLF actuators). Besides fluorescing with the metal ligands, levofloxacin possesses antibacterial activity. The fluorescence color of Eu-CLF hydrogel in Tb 3+ solution changed from red to yellow, whereas that of Tb-CLF hydrogel in Eu 3+ solution changed from green to red. Both the Eu-CLF and Tb-CLF hydrogels fluoresced blue and green in alkali and acid solution, respectively. The actuator thus achieves synergetic color-changing and shape-morphing under a single external stimulus (acidic/alkaline switching). Such an activator shaped like a bionic flower and an intelligent octopus-type soft robot with camouflaging ability were then prepared. This study provides an elegant strategy for developing advanced multi-responsive multicolor tunable behaviors for bionic soft robots, biosensors , and camouflaged robots.
研究领域:
材料科学
·
仿生学
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人工智能
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机器人技术
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生物传感器
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）