LUMINESCENCE
·
2024
·Vol. 39
·期 4
·e4737
·
IF 3.2
Haoquan Li,Haoyi Wu,Lei Zhang,Shuyu Qin,Jianjun Song,Yahong Jin,Yihua Hu
The predominant method for pest control has been the use of pesticides, which have been shown to have detrimental effects on soil, freshwater, and crop quality. Therefore, the development of novel and sustainable crop protection strategies has become increasingly imperative. In this study, a novel orange–red emitting Ba 2 SrWO 6 : Sm 3+ phosphor was synthesized using the high-temperature solid-state reaction. Under ultraviolet excitation, the phosphors showed obvious emission peaks at 575, 614, and 662 nm. The Ba 2 SrWO 6 : Sm 3+ was used to fabricate a fluorescence film with polydimethylsiloxane (PDMS), and attracted twice as many insects as the blank control group under 365 nm ultraviolet light. This material holds great potential as a fluorescent agent for insect trapping in the pest control fields of tea, cotton, eggplant, rice, potato, grape, and other agricultural industries. Our findings provide an eco-friendly approach to pest management for the increment of food production.
研究领域:
农业科学
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材料科学
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生态学
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DOI
PubMed
高影响因子
Food Chemistry-X
·
2024
·
IF 6.5
Qian Han,Min Yang,Zexin Zhang,Xinwen Bai,Xiuying Liu,Zhenhua Qin,Wei Zhang,Pingping Wang,Lijie Zhu,Zaixi Shu,Xuepeng Li
In this study, amine vapor-sensitive films with ratiometric fluorescence attributes were developed. The pH-sensitive fluorescein 8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS) and its tetraphenylethylene derivative (TPB) were selected as ratiometric indicators and incorporated into a polyvinyl alcohol (PVA) matrix to produce HPTS/TPB-PVA films. The films responded well to amine vapors, and the interference of aromatic vapors did not substantially affect the fluorescence signals of the films. Under UV light at a wavelength of 365 nm, the fluorescence of the films changed from dark pink to light pink and finally to yellow when the freshness of the fish was visually checked during storage. In addition, the color difference values of the films showed a positive correlation with the total volatile basic nitrogen (TVB-N), ranging from 12.7 to 24.8 mg/100 g at 25 °C and 8.4 to 25.6 mg/100 g at 4 °C, respectively. This indicates that fluorescent films have good potential for quantifying fish freshness in the near future when connected to an automatic data processing system based on color differences.
研究领域:
食品科学
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生物传感
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材料科学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yijun Yao,Jiannan Xue,Miao Wang,Dong Fu,Yanqin Shen,Ying Xue,Fan Zhang,Pengbi Liu,Hongru Wang,Hailiang Wu
Herein, a facile, green, and universal method to prepare polymer fluorescent films was proposed. Firstly, hollow cellulose-based microspheres were prepared by cross-linking copolymerization and self-assembly strategy. Then, after encapsulating the hydrophobic fluorescent dye fluorescein isothiocyanate (FITC) into the cavity of a hollow cellulose-based microsphere through the ultrasonic/dialysis method, a series of flexible fluorescent microsphere films with tunable fluorescence was obtained. The formation of hollow cellulose-based microspheres was confirmed by SEM. DLS, AFM, and UV–vis analysis provided evidences for the successful encapsulation of FITC in hollow cellulose-based microspheres. Benefiting from the synergistic effects of “anchoring”, “diluting” and “isolation” for cellulose polymer chain as well as the hollow structure, the aggregation and self-quenching of FITC were effectively inhibited, which promoted the fluorescent films with different loading amount to emit green fluorescence under 365 nm UV light irradiation, and the fluorescence intensity was tunable. Moreover, the fluorescent films exhibited strong UV absorption, excellent optical stability, foldability, and easy scrollability. Particularly, compared with the luminescent film constructed by whisker-like cellulose-based microgel, the hollow cellulose-based fluorescent microsphere film obtained in this work had higher solvent resistance, water contact angle, and thermal stability. Due to the high stability and easy processability of hollow cellulose-based fluorescent microspheres, they could be processed into coating materials and fibers that were durable and widely used. They have potential application value in the fields of light-emitting devices, safety warnings, smart labels, and anti-counterfeiting materials, etc.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
SENSORS
·
2019
·Vol. 19
·期 7
·1726
·
IF 3.031
Zhou Li,Wenxiang Xiao,Rongen Huang,Yajing Shi,Cheng Fang,Zhencheng Chen
Serum bilirubin is an important biomarker for the diagnosis of various types of liver diseases and blood disorders. A polydopamine/gold nanoclusters composite film was fabricated for the fluorescent sensing of free bilirubin. Bovine serum albumin (BSA)-stabilized gold nanoclusters (AuNCs) were used as probes for biorecognition. The polydopamine film was utilized as an adhesion layer for immobilization of AuNCs. When the composite film was exposed to free bilirubin, due to the complex that was formed between BSA and free bilirubin, the fluorescence intensity of the composite film was gradually weakened as the bilirubin concentration increased. The fluorescence quenching ratio (F0/F) was linearly proportional to free bilirubin over the concentration range of 0.8~50 μmol/L with a limit of detection of 0.61 ± 0.12 μmol/L (S/N = 3). The response was quick, the film was recyclable, and common ingredients in human serum did not interfere with the detection of free bilirubin.Keywords:free bilirubin;polydopamine;gold nanoclusters;fluorescent film
研究领域:
生物传感
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医学诊断
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DOI
PubMed
高影响因子
CURRENT APPLIED PHYSICS
·
2025
·
IF 3.1
Xiangyuan Duan,Shuyan Xu
Fluorescent composite films were prepared using polyvinyl alcohol (PVA) as the substrate and NaYF 4 :Eu 3+ phosphors and κ-carrageenan powder (KC) as the fillers by the casting method. The impact of incorporating NaYF 4 :Eu 3+ on the structural, morphological, mechanical property, thermal stability, and optical characteristics of PVA/KC films was examined. The incorporation of KC promoted the formation of hydrogen bonds between KC and PVA. Consequently, the water contact angle of the films increased by approximately 10°, indicating improved water resistance. Meanwhile, the incorporation of NaYF 4 :Eu 3+ increased the thermal stability of the films, with the temperature at 5% mass loss rising by approximately 13°C. Additionally, the mass retention at 600°C improved by 3.47%. Notably, the addition of NaYF 4 :Eu 3+ had a negligible effect on the transparency of the films while imparting fluorescent properties. Under UV excitation at 395 nm, the films exhibited maximum fluorescence intensity at 616 nm, indicating a significant fluorescence effect.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 20
·4787
·
IF 4.2
Jiangchen Wu,Jianan Liu,Xinghua Liu,Jingxia Zheng,Lin Chen,Yongzhen Yang,Chunhui Su
To obtain carbon dots (CDs) with narrow full width at half maximum (FWHM) and long-wavelength emission, carbon sources with high conjugate sizes and abundant functional groups can be employed to synthesize CDs. In this study, orange-emissive carbon dots (OCDs) were synthesized with phloroglucinol and rhodamine B as precursors. When the molar ratio of them was 30:1, and ethanol was served as the solvent, OCDs with optimized emission wavelength at approximately 580 nm, an FWHM of 30 nm, and a quantum yield (QY) of 27.31% were obtained. Subsequently, the OCDs were incorporated into polyvinyl alcohol (PVA) to fabricate solid-state OCD/PVA fluorescent films, which exhibited an FWHM of 47 nm. The PVA matrix facilitated the dispersion of OCDs, thereby suppressing non-radiative energy transfer among the OCDs and enhancing luminescence efficiency. Consequently, compared with OCDs, the OCD/PVA film exhibited significant luminescent enhancement, and the QY of the composite film was increased to 84.74%. Moreover, OCD/PVA film showed good transmittance and thermal stability. This research offers a solid theoretical and experimental foundation for the potential applications of CDs in the field of solid-state lighting.
研究领域:
材料科学
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光学
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DOI
PubMed
高影响因子
ANALYST
·
2019
·Vol. 144
·期 15
·4569-4574
·
IF 4.019
Zhiqin Deng,Chang Liu,Yanzi Jin,Jianlin Pu,Bin Wang,Jiucun Chen
A high quantum yield (QY) is the key requirement for implementing carbon dots (CDs) in nearly all applications. In this work, blue emissive N-doped CDs with a QY of 83% and orange emissive N-doped CDs with a QY of 47% were successfully prepared using resorcinol and phloroglucin as carbon resources in formamide by one-step microwave synthesis, respectively. Formamide not only plays a role as the solvent but also takes part in the formation of the high QY CDs. It is demonstrated that the as-prepared blue- and orange-emitting N-doped CDs with a high QY can be uniformly dispersed into glue and be fabricated as CD/glue fluorescent composites for fluorescent films and fingerprint imaging. Furthermore, these CDs also show excellent cellular imaging capability.
研究领域:
材料科学
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生物医学工程
·
化学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yunchuan Dai,Pengyu Hu,Tingting Chu,Meihong Niu,Haiqiang Shi,Haiming Li,Zhiwei Wang,Yanzhu Guo
As a novel fluorescent carbon nanomaterial, carbon dots are restricted by their poor fluorescence in the solid state, although they exhibit favorable photoluminescence in solution. N-doped carbon dots (N-CDs) and solid-state fluorescence films were prepared using green and renewable cellulose-derived materials, respectively. The hydrogen bonding network of carboxymethyl cellulose (CMC) inhibits the self-aggregation behavior of N-CDs, which leads to solid-state fluorescence. The N-CDs was initially obtained with CMC as the carbon source, which showed excellent blue fluorescence. Subsequently, the white-emitting films (N-CDs@Eu-MOF/CMC) were successfully constructed by combining the blue fluorescent N-CDs with the red fluorescence of the europium metal-organic framework. The prepared films showed stable luminescence within 30 days and in the heat environment at 120 °C for 3 h. After covering the N-CDs@Eu-MOF/CMC films on the UV-LED chip with ultraviolet emissive at 365 nm, the white light-emitting diodes were obtained, which exhibited excellent color characteristics with the color coordinates, a correlated color temperature, and a color rendering index of (0.31, 0.32), 6580 K, and 92, respectively. The strategy proposed in this work will provide ideas for generating optical luminescent films from biomass and provide guidance for solid-state fluorescence biomass materials.
研究领域:
材料科学
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光学
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Jiacheng Hao,Aiqin Zhang,Zhen Pei,Jiandong Guo,Jing Jia,Husheng Jia
Rare earth red LED devices are widely used in indoor plant lighting, light therapy and other fields owning to their advantages of long life, low cost, energy saving, and environmental protection. However, their practical application is greatly limited due to the serious phenomena of deliquescence and agglomeration. In this work, a series of red-emitting Ba 3 ScB 3 O 9 :xEu 3+ phosphors have been prepared by two-step high-temperature solid state method. Ba 3 ScB 3 O 9 :xEu 3+ phosphors show an orange-red emission at 575–650 nm excited by the wavelength of 244 nm, reaching the maximum at the doping concentration of 0.05. The modified red-emitting phosphors VTES@Ba 3 ScB 3 O 9 :0.05Eu 3+ have been further prepared by surface modification with vinyl triethoxysilane (VTES). The FT-IR, XRD , XPS , and SEM analysis of the VTES@Ba 3 ScB 3 O 9 :0.05Eu 3+ phosphors show that VTES is bonded with Ba 3 ScB 3 O 9 :0.05Eu 3+ successfully. The particle size distribution of phosphors VTES@Ba 3 ScB 3 O 9 :0.05Eu 3+ is uniform, the agglomeration phenomenon is obviously weakened, and the thermal quenching is retarded. The fluorescence films have been prepared by blending phosphors with polymethyl methacrylate (PMMA). The hydrophobicity , thermal stability, and dispersibility in polymer matrix are improved. The fluorescence films have good ultra-violet resistance. It is worthy noted that the luminescent intensity of modified fluorescence films is higher than that of unmodified ones because the non-radiative transition and PL quenching of phosphors are inhibited in the modified fluorescence films. It's very gratifying to see that the brightness of the modified fluorescence films LED devices increases to 1.26 times than that of unmodified ones, and CIE color coordinates shift to red light region.
研究领域:
材料科学
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光学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2011
·Vol. 21
·期 6
·1027-1031
·
IF 8.508
Fu Wang,Zheng Xie,Hao Zhang,Chun-yan Liu,Ying-ge Zhang
The first use of an organosilane as a coordinating solvent to synthesize highly luminescent (quantum yield = 47%) amorphous carbon dots (CDs) in one minute is reported. The CDs, which benefit from surface methoxysilyl groups, have a diameter of ~0.9 nm and can easily be fabricated into pure CD fluorescent films or monoliths simply by heating them at 80 ºC for 24 h. Moreover, the non-water-stable CDs can be further transformed into water-soluble CDs/silica particles, which are biocompatible with and nontoxic to the selected cell lines in our preliminary evaluation. The proposed novel synthetic route is believed to provide an alternative synthesis route and should inspire more research into the origin and applications of CDs, as well as delivering CD-based materials.
研究领域:
材料科学
·
生物医学
·
化学工程
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Xing Cao,Shichang Sun,Bing Lu,Yan Liu,Rui Ma,Huiqun Cao,Hongzhi Ma,Hexun Huang
In order to overcome the shortcomings of insufficient red light component and poor thermal stability of commercial white light emitting diode (WLED), YAG:Ce, R (R: Gd 3+ , Pr 3+ , Gd 3+ and Pr 3+ ) fluorescent thin films were prepared by pulse laser deposition (PLD). The composition and microstructure, photoluminescence properties, and red-enhanced mechanism of co-doped YAG fluorescent thin films, as well as the electroluminescence behavior of the corresponding WLEDs were investigated. Results showed that the doping of Pr 3+ caused the emission spectrum energy of Ce 3+ to migrate, and an emission peak appeared at 606 nm in the red region. The doping of Gd 3+ caused the emission spectrum of Ce 3+ to shift to the red region, and the main peak position of the Ce 3+ emission spectrum is red-shifted from 523 nm to 548 nm. The YAG:Ce,Pr,Gd fluorescent film not only realized the improvement of red light components and red-shift, but also increased the energy transmission efficiency from 33.3% to 51.9%. Moreover, results of the color coordinate analysis also showed that the co-doping of Gd 3+ and Pr 3+ made the luminescence closer to the red region, reducing the color temperatures and hues changed to warm. Thus, tri-doped transparent fluorescent thin film were prospective for WLED application.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 23
·7654-7661
·
IF 6.4
Jinchan He,Xiao Zhang,Cong Xie,Hsueh Shih Chen,Ping Yang
Because of their inherent ionic properties, inorganic cesium halide lead perovskite nanocrystals (NCs) are normally unstable in light and heat environments as well as polar solvents, which seriously limit their practical application. In this paper, AlO(OH) nanosheets were assembled into hollow mesoporous spheres to encapsulate CsPbX3 NCs for increasing stability according to the powerful adsorption of AlO(OH) on Pb ions. The hollow AlO(OH) assemblies were created via hydrothermal synthesis. The in situ growth of CsPbX3 NCs in AlO(OH) assemblies was then finished in dimethylformamide solutions. After encapsulation, the stability of the NCs was greatly improved and the exchange reaction of halogen ions was effectively prevented. The NCs in the assemblies exhibited high PL quantum yields (PLQYs). Namely, blue-, green-, and red-emitting CsPbX3 (X = Cl, Br, and I)@AlO(OH) composites were fabricated. The composites were further mixed with polystyrene (PS) to prepare a flexible photoluminescent (PL) film with excellent bendable and foldable properties. The initial PLQYs of blue-, green-, and red-emitting CsPbX3@AlO(OH) composites were found to be 48.2, 96.4, and 43.7%, respectively. The films revealed high stability against water because of the excellent hydrophobic properties of PS. These emitting films were made into bands of various shapes, in which their well-flexible nature endowed the films with important applications.
研究领域:
材料科学
·
纳米技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）