DYES AND PIGMENTS
·
2024
·
IF 4.1
Jinyu Wu,Shaolong Han,Sichen Li,Rui Zhu,Shuaibo Shi,Shishen Zhang,Kun Zhang
Till now, there is still a lack of the convenient and efficient approach to implement identification and quantitation of fullerenes in various domains. This work provides the first example for detecting fullerenes by an adequate fluorescent probe, in parallel with the new methodology for detecting fullerenes by the fluorescent chemosensing approach. Using a multi-emission lanthanide-disalicylaldehyde coordination hybrid H 2 Q j2 /Tb 0.91 Eu 0.09 , the rapid, selective and discriminative detection of analogous C 60 and C 70 can be easily achieved after the spectral and statistical analyses of fluorescent sensing signals on four emission bands (416, 543, 447 and 615 nm), excited by two irradiation lights (370 and 394 nm). Titration experiments further verify the very high linearity for both C 60 and C 70 and allow their detection at concentrations as low as 1.72 μM (C 60 ) and 0.09 μM (C 70 ). Moreover, this fluorescent probe also shows its reliable abilities to identify proportional C 60 /C 70 mixtures and monitor C 60 and C 70 contents in actual soil sample. It is believed that our proposed lanthanide-base fluorescent matrix not only verify the feasibility and potential of fluorescent chemosensing methodology for the fullerene detection but also provide a valuable tool for potential applications.
研究领域:
化学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2022
·
IF 9.988
Jinli Fu,Shu Zhou,Xiaodan Wu,Sisi Tang,Pengfei Zhao,Kangling Tang,Yu Chen,Zhaoxia Yang,Zhaohui Zhang,Hongjun Chen
The establishment of a fluorescence sensing system for sensitive and selective visual detection of trace antibiotics is of great significance to food safety and human health risk assessment. A simple and rapid one-pot strategy was developed successfully to synthesize a down/up-conversion dual-excitation multi-emission fluorescence imprinted sensor for dual-channel thiamphenicol (TAP) detection. In this strategy, the metal-organic frameworks were in situ incorporated into the fluorescence imprinted sensor, guiding the coordination induced emission of abiotic carbon dots and signal-amplification effect of fluorescence sensing. Under dual-excitation (370 nm and 780 nm), the fluorescence imprinted sensor exhibited a dual-channel fluorescence response toward TAP with two-part linear ranges of 5.0 nM–6.0 μM and 6.0 μM–26.0 μM. Significantly, the fluorescence color ranged from blue to purple to red can be observed with the naked eye. The results of the dual-channel TAP determination in actual samples by the fluorescence imprinted sensor indicated that the fluorescence imprinted sensor provided a sensitive, selective, and multiplexed visual detection of TAP in complex sample.
研究领域:
食品安全
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yujie Duan,Shanshan Yu,Siyuan Xia,Lei Wang,Zihan Zhao,Hui Liu,Huanhuan Huang,Hongxiang Zhu,Li Wang,Hui He
The distinction of high reactive oxygen species (hROS) types has positive significance for disease diagnosis. Here, to visibly assess hROS types and levels, a cellulosic multi-emission fluorescence probe was designed by incorporating proline-protected gold nanoclusters (Em: 450 nm), glutathione-protected gold nanoclusters (Em: 680 nm) and o-phenylenediamine (Em: 565 nm) onto cellulose nanocrystal. Ingeniously, the probe displayed the stabilized, quenched and activated fluorescence signals corresponding to hROS at 450 nm, 680 nm, and 565 nm, respectively. The response time of the probe for hROS was greatly reduced from 29 min to 7 min through gold nanoclusters releasing Au(Ⅲ) during the fluorescence quenching process to accelerate the fluorescence opening of o-phenylenediamine. Therefore, the probe with long-term stability (12 months) possessed excellent sensitivity and selectivity to distinguish hROS types, and exhibited visually yellow, white, and green fluorescence for •OH, ClO − , and ONOO − , respectively, and the corresponding detection limits were 0.56 μM, 0.73 μM and 0.81 μM within 5 min, 6 min and 7 min, respectively. The design strategy provides the ideas for constructing multi-emission probe to distinguish multiple analytes at similar levels.
研究领域:
生物化学
·
纳米医学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 14
·2779
·
IF 4.967
Xuexin Gu,Lingli Zhu,Dekui Shen,Chong Li
The transformation of lignin with natural aromatic structure into value-added carbon dots (CDs) achieves a win-win situation for low-cost production of novel nanomaterials and reasonable disposal of biomass waste. However, it remains challenging to produce multi-emission CDs from biomass for advanced applications. Herein, a green and facile approach to preparing multi-emission CDs from alkali lignin via N and B co-doping is developed. The obtained N and B co-doped CDs (NB-CDs) show multi-emission fluorescence centers at 346, 428 and 514 nm under different excitations. As the doping amount of N and B increases, the fluorescence emission band gradually shifts to 428 and 514 nm, while that at 346 nm decreases. The fluorescence mechanism is explored through the research of the structure, composition and optical performance of NB-CDs in combination with density functional theory (DFT) calculations. It demonstrates that the effect of doping with B-containing functional groups on the fluorescence emission behavior is multivariate, which may be the crucial contribution to the unique multi-emission fluorescence of CDs. The multi-emission NB-CDs with prominent stability are applied for multilevel anti-counterfeiting printing. It provides a promising direction for the sustainable and advanced application of biomass-derived CDs, and the theoretical results highlight a new insight into the deep understanding of the multi-emission fluorescence mechanism.Keywords:lignin;multi-emission;carbon dots;N;B co-doped;density functional theory;multilevel anti-counterfeiting
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2023
·
IF 4.5
Dan Hong,Xian-yue Xiang,Qiu-ju Zhou,Yu-Lin Zhu,Yong-ping Wu,Jun Yang,Shi-hong Chen,Ke-jun Tan
Multi-emission carbon dots (M-CDs) have broad applications. However, reports of the synthesis of M-CDs and their emission mechanism are limited. In this study, M-CDs with three emissions are synthesized by a one-pot solvothermal method, and the luminescence mechanism is investigated in detail. The prepared M-CDs show significant concentration-dependent properties. For high-concentration M-CDs (HC CDs) , the surface-defect and carbon-core luminescence states are related to emission centers at 423 and 586 nm, respectively. The emission center at 493 nm are mainly due to the self-absorption of M-CDs. Conversely, low-concentration M-CDs (LC CDs) have 423 and 586 nm emissions. The blue CDs (B-CDs) and red CDs (R-CDs) are extracted from the prepared M-CD solution. The structural and optical properties indicate that the 493 nm peak is related to aggregation and self-absorption between B-CDs and R-CDs in HC CDs. Surprisingly, solid CDs (S-CDs) with solid-state room-temperature phosphorescence (RTP) are simultaneously obtained during the preparation of the M-CDs. The mechanism investigation results show that S-CDs are composed of CDs and NaHCO 3 , and NaHCO 3 acts as an oxygen barrier to prevent the quenching of the triplet and rigidly holds the luminescent guests to suppress vibrational dissipation. The M-CDs are successfully applied to detect Morin, while the S-CDs are demonstrated for optical anti-counterfeiting applications.
研究领域:
材料科学
·
光学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2020
·Vol. 13
·期 2
·440
·
IF 3.057
Youxiong Zheng,Yan Tang,Jianwei Yu,Lan Xie,Huiyou Dong,Rongsheng Deng,Fuhua Jia,Bingxin Liu,Li Gao,Junyuan Duan
Building novel functional nanomaterials with a polymer is one of the most dynamic research fields at present. Here, three amphiphilic block copolymers of 8-hydroxyquinoline derivative motifs (MQ) with excellent coordination function were synthesized by Reversible Addition-Fragmentation Chain Transfer Polymerization (RAFT) polymerization. The coordination micelles were prepared through the self-assembly process, which the MQ motifs were dispersed in the hydrophobic polystyrene (PSt) blocks and hydrophilic Poly(N-isopropylacrylamide (PNIPAM)) blocks, respectively. The dual-emission micelles including the intrinsic red light emission of quantum dots (QDs) and the coordination green light emission of Zn2+-MQ complexes were built by introducing the CdSe/ZnS and CdTe/ZnS QDs in the core and shell precisely in the coordination micelles through the coordination-driven self-assembly process. Furthermore, based on the principle of three primary colors that produce white light emission, vinyl carbazole units (Polyvinyl Carbazole, PVK) with blue light emission were introduced into the hydrophilic PNIPAM blocks to construct the white light micelles that possess special multi-emission properties in which the intrinsic red light emission of QDs, the coordination green light of Zn2+-MQ complexes, and the blue light emission of PVK were synergized. The dual and multi-emission hybrid micelles have great application prospects in ratiometric fluorescent probes and biomarkers.
研究领域:
高分子化学
·
纳米材料科学
·
生物标记物研究
✓ 已验证
DOI
高影响因子
CARBON
·
2022
·
IF 11.307
Shiyu Yang,Zhiqiong Chen,Ping Zhou,Jiashan Xia,Tao Deng,Chao Yu
Compared with visible fluorescence carbon dots (CDs), the multi-emission (visible and near infrared) fluorescence CDs based platform (V-N Platform) with blood-brain barrier penetration, real-time brain imaging and drug loading capacities, is of great significance. Herein, a novel type of multi-emission fluorescence CDs (GT) was created to penetrate BBB for brain imaging and local drug delivery, which was synthesized by hydrothermal method, using endogenous l -tryptophan and d -glucose. The capability for in vitro imaging was verified through the experiments on cell imaging. Moreover, the ability of in vivo imaging, especially for brain imaging, was confirmed by experiments in mice and zebrafish. In addition, the in vitro and in vivo experiments preliminarily confirmed its potential to act as a drug delivery platform. This V-N Platform (GT) will be expected to have a significant impact on the researches for CDs and the theranostics of brain diseases.
研究领域:
纳米技术
·
神经科学
·
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Yanxin Gao,Yanyue Zhu,Yuping Wang,Jinhong Bi
The development of innovative multi-emission sensors for the rapid and accurate detection of contaminants is both vital and challenging. In this study, utilizing two rigid ligands (H 3 ICA and H 4 BTEC), a series of water-stable bimetallic organic frameworks (EuTb-MOFs) were synthesized. Luminescent investigations have revealed that EuTb-MOF-1 exhibits prominent multiple emission peaks, attributed to the distinctive fluorescence characteristics of Eu(III) and Tb(III) ions. Therefore, EuTb-MOF-1 efficiently recognized various metal ions and pharmaceutical compounds through 2D decoded maps. Fe 3+ and Pb 2+ exhibited significant quenching effects on the luminescence of EuTb-MOF-1, which were attributed to the internal filtering effect and the interaction between Lewis basic sites within EuTb-MOF-1 and Pb 2+ ions, respectively. Furthermore, EuTb-MOF-1 demonstrated high sensitivity to sulfonamide antibiotics, with detection limits of 0.037 μM for SMZ and 0.041 μM for SDZ, respectively. In addition, EuTb-MOF-1 was immobilized to prepare MOF-based test strips, enabling direct visual detection of sulfonamides as a portable sensor. With excellent water stability, multi-responsive recognition capabilities, and high sensitivity to specific analytes, EuTb-MOF-1 is a promising candidate for environmental contaminant detection in aquatic systems.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Li Xiong,Silong Wang,Jin Xu,Chengzhuo Yu,Fanglan Geng,Xianwei Wang,Lixia Zhao,Yawei Wang
Given the widespread overuse and intricate toxicological features of different antibiotics, developing advanced optical sensors for synchronous analysis of multiple antibiotics is significant but still a challenge. Multiemissive material-based optical sensors possess great potential in detecting structurally similar compounds. However, an efficient and universal strategy to construct multiemissive materials is still scarce. Herein, an energy barrier strategy is utilized to achieve full-spectrum tunable multiemissions from a single lanthanide metal–organic framework (MOF). Using Eu/Tb-MOF as a model, another lanthanide ion acting as the “energy barrier” is introduced into the Eu/Tb-MOF to regulate the energy transfer process of the ligand. This approach enables the preparation of a series of isostructural GdxTbyEuz-NTB MOFs (NTB= 4,4′,4″-nitrilotribenzoic acid), whose luminescent colors can be flexibly tuned across the whole color gamut under a single excitation wavelength. The universality of the strategy is validated by choosing other blue-emissive ligands and introducing other energy barrier ions. It is demonstrated that as long as the energy levels of the ligand and the barrier ion are appropriate, the tunable multiemissions can be obtained in a single Ln-MOF. Furthermore, the analytical performance of GdxTbyEuz-NTB MOFs for multiple antibiotics is investigated by assembling a sensor array. Two types of antibiotics (four nitrofurans and four tetracyclines) are selected as the model analytes. Detailed fingerprint information is outputted through differential interactions between each luminescent center and each antibiotic. The eight antibiotics are well-discriminated, with no cross interference even in real water samples. Moreover, the sensor array exhibits great potential in quantitative detection of antibiotics with high sensitivity (detection limit as low as 0.03 μM). Our work provides valuable guidance for constructing multiemissive materials and their application in antibiotic discrimination, stimulating further exploration of advanced optical materials.
研究领域:
分析化学
·
材料科学
·
环境监测
·
药物分析
·
光学传感
·
纳米材料
·
分子探针
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
You Li,Sai Xu,Qun Zhang,Yuefeng Gao,Xizhen Zhang,Yongze Cao,Hongquan Yu,Xiangping Li,Baojiu Chen
Inorganic lead-free halide perovskites are quite desirable for various applications due to their outstanding optoelectronic performances. However, excitation wavelength-dependent multi-emission in a single luminophore is less reported. In this study, Sb 3+ /Bi 3+ /Er 3+ codoped Cs 2 Ag 0.1 Na 0.9 InCl 6 lead-free double perovskite with upconversion and downshifting luminescence modes has been developed. The double perovskite displays a dual-emission band located at 450 nm and 580 nm under excitation of 355 nm. The blue emission originates from self-trapped excitons (STEs) in [SbCl 6 ] 3- octahedrons, while the yellow emission comes from STEs between states localized in the BiCl 6 and AgCl 6 octahedra. Interestingly, the phosphor’s emission can be dynamically adjusted by excitation wavelength and Sb 3+ doping concentration. Not only that, the phosphor can also generate upconversion green light upon the irradiation of 980 nm lasers. The multi-excitation wavelength characteristics of this perovskite make it very suitable as a material for anti-counterfeiting and encoded information storage, and the excellent temperature stability and moisture resistance of this perovskite also make it more promising.
研究领域:
材料科学
·
光电技术
·
光子学
·
纳米技术
✓ 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）