MEASUREMENT SCIENCE and TECHNOLOGY
·
2024
·Vol. 35
·期 9
·095205
·
IF 2.7
Feng Gu,Chunhua Wei,Lingrui Jiao,Yingzheng Liu,Di Peng
Motion- and temperature-induced errors are the major sources of error in pressure-sensitive paint (PSP) measurement. In this study, we developed a novel dual-luminophore fast-responding PSP with reference and pressure-sensitive channels that have similar temperature sensitivities, enabling motion- and temperature-induced errors to be simultaneously eliminated by taking the intensity ratio of the two channels. Rhodamine B (RhB), which was loaded on the Mobil Composition of Matter No. 41 (MCM-41) molecular sieve, and platinum tetrakis (pentafluorophenyl) porphyrin (PtTFPP) were chosen as the reference and pressure-sensitive luminophores, respectively. These luminophores were mixed with mesoporous SiO2 particles and a small amount of polymer to form a sprayable motion–temperature cancellation (MTC) PSP. By controlling the concentration of RhB, the temperature sensitivity of the reference channel was adjusted to match that of PtTFPP. To minimize temperature-induced errors, the effect of spectral ranges was also investigated. The lowest temperature sensitivity achieved for the MTC-PSP was 0.025%/°C, yielding an extremely low temperature-induced error of 55 Pa °C−1. Its pressure sensitivity and response time were 0.46%/kPa and 145 μs, respectively. In addition, a theoretical model for the MTC-PSP that considers the effect of spectral overlap was proposed. The model accurately predicted the nonlinear relationship between the intensity ratio and pressure. The capability of the MTC-PSP was confirmed in a fast-rotating-disk experiment, and the pressure results agreed well with the theoretical pressure distribution on the disk.
CAS / MDL:
研究领域:
物理学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 7
·2102141
·
IF 10.05
Hong Ming,Yifei Zhao,Yayun Zhou,Maxim S. Molokeev,Yuanjing Wang,Shuai Zhang,Enhai Song,Shi Ye,Zhiguo Xia,Qinyuan Zhang
The design and discovery of Mn 4+ -activated fluoride phosphors that can secure both high luminescence efficiency and short fluorescence lifetime simultaneously are crucial and urgent for constructing high-quality wide-color gamut (WCG) backlight display applications. Herein, a series of brand-new Mn 4+ -activated narrow-band red-emitting phosphors with both high external quantum efficiency (EQE, >50%) and short fluorescence lifetime (τ ≤ 3.8 ms) are designed by introducing Mn 4+ into newfound tetramethylammonium (Me 4 N)-based organometallic fluoride (Me 4 N) 2 B F 6 ( B = Ge, Ti, Zr) hosts. These intriguing properties of Mn 4+ arise from the larger steric hindrance of (Me 4 N) + cations and low local structure symmetry in the 0D (Me 4 N) 2 B F 6 , as verified by the structural and spectral analyses. (Me 4 N) 2 GeF 6 :Mn 4+ , as a representative, shows a high EQE of ≈64.6% and a short lifetime of ≈3.78 ms. A prototype projector with superb performance is assembled by employing a remote (Me 4 N) 2 GeF 6 :Mn 4+ -based white light-emitting diode with high luminous efficiency (≈143.09 lm W −1 ) and WCG (≈112.02% National Television System Committee (NTSC)) to demonstrate their great potentials for backlight applications. The research brings up a promising alternative as the host materials for Mn 4+ -doped fluoride phosphors and provides a deeper understanding on the correlation between structure and luminescence.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2019
·Vol. 14
·期 6
·884-889
·
IF 3.698
Tingting Zhang,Zihao Zhao,Huili Ma,Yongming Zhang,Wang Zhang Yuan
Graphical Spatial relations : A pure organic luminogen (AN-MA) with isolated small conjugates and effective through-space conjugation was obtained through facile Diels–Alder cycloaddition. Owing to its flexible structure, two polymorphs were readily obtained. These exhibit bright visible emission and persistent room-temperature phosphorescence ( p -RTP) (see figure). Pure organic luminogens with persistent room-temperature phosphorescence ( p -RTP) have attracted increasing attention owing to their vital significance and potential applications in security inks, bioimaging, and photodynamic therapy. Previously reported p -RTP luminogens normally possessed through-bond conjugation. In this work, we report a pure organic luminogen, AN-MA, the Diels–Alder cycloaddition adduct of anthracene (AN) and maleic anhydride (MA), which possesses isolated phenyl groups and an anhydride moiety. AN-MA exhibits aggregation-enhanced emission (AEE) characteristics with efficiency of approximately 2 % and up to 8.5 % in solution and crystals, respectively. Two polymorphs of AN-MA were readily obtained that were able to generate UV emission from individual phenyl rings together with bright blue emission owing to the effective through-space conjugation. Moreover, p -RTP with a lifetime of up to approximately 1.6 s was obtained in the crystals. These results not only reveal a new system with both fluorescence and RTP dual emission but also suggest an alternative through-space conjugation strategy towards pure organic p -RTP luminogens with tunable emissions.
研究领域:
材料科学
·
有机化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Qin Liu,Peipei Dang,Guodong Zhang,Hongzhou Lian,Ziyong Cheng,Guogang Li,Jun Lin
Mn2+-doped luminescent materials play a significant role in a variety of fields, including modern lighting, displays, and imaging. Mn2+ exhibits a broad and adjustable emission, hinging on the local environment of the crystal field and the interaction of the 3d5 electrons. However, it is still a challenge to realize the precise control of the emission of Mn2+ ions due to site-prior occupation in a specific lattice. Here, the formation of Mn–Mn dimers is proposed to be an effective strategy to design a novel red emission. Multimode emitters in Mn2+-activated AZn4(PO4)3 (A = K, Rb, and Cs) with unique [Zn4PO12] chains and [ZnOn] groups are observed to achieve regular green and unusual red emissions. KZn4(PO4)3:Mn2+ shows broad dual emissions at 542 and 608 nm, attributed to [MnO4] and [Mn2O7] dimers, respectively. While K is replaced with Rb and Cs, the Zn ions form [ZnO4] tetrahedra and [ZnO5] octahedra. RbZn4(PO4)3:Mn2+ exhibits a broad red emission at 618 nm, ascribing to [Mn2O7] and [Mn2O8] dimers. CsZn4(PO4)3:Mn2+ also displays a broad orange-red emission at 608–620 nm with increasing doping levels, deriving from energy transfer from [MnO5] to [Mn2O7] and [Mn2O8] dimers. This work provides a framework for creating novel red emissions from Mn2+-doped luminescent materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 8
·期 2
·734-741
·
IF 6.641
Yaxin Hu,Xiaoqin Liang,Dongliang Wu,Bang Yu,Yijia Wang,Yifang Mi,Zhihai Cao,Zujin Zhao
A novel technique of modulating the emission behavior of aggregation-induced emission (AIE) polymeric nanoparticles (AIE-PNPs) based on the polymer matrix was provided. White-light-emitting (WLE) AIE-PNPs were facilely synthesized through miniemulsion copolymerization of methyl methacrylate (MMA) and comonomers with various polarities by using a single luminogen with AIE and twisted intramolecular charge transfer (TICT) properties, (2-(3-cyano-5,5-dimethyl-4-(4-(1,2,2-triphenylvinyl)styryl)furan-2(5H)-ylidene)malononitrile (TPE-TCF)). The increased or reduced polarity of the polymer matrix could lead to red-shifted or blue-shifted emission of polymer/TPE-TCF AIE-PNPs, respectively. The polarity-dependent emission behavior of polymer/TPE-TCF AIE-PNPs was generally validated in the AIE-PNPs with various polymer matrices. The WLE polymer/TPE-TCF AIE-PNPs could be generally synthesized via miniemulsion copolymerization of MMA with isobornyl methacrylate, stearyl methacrylate, lauryl methacrylate, n-hexyl methacrylate, and cyclohexyl methacrylate at an appropriate monomer composition. By simply coating a layer of prepared WLE AIE-PNPs onto UV LED chips, the UV light could be successfully converted to white light, clearly demonstrating their great application potential in electronic and photonic devices.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Peipei Li,Zhenjuan Xu,Lili Zhao,Haoyu Chen,Xiaohua Zhu,Youyu Zhang,Meiling Liu,Shouzhuo Yao
Development of nanoluminophores with high efficiency, good stability, and excellent electronic transfer ability is one of the key challenges in electrochemiluminescence (ECL). Here, a porphyrin-based nanomaterial named Fc-TCPP was synthesized by self-assembly of 1,1′-ferrocenedicarboxylic acid (Fc(COOH)2) and tetrakis-(4-carboxyphenyl) porphyrin (TCPP) under infrared heating light. By tuning the ratio of the precursors, the morphology of Fc-TCPP can be regulated from primitive nanospheres to thorn-ball flowers decorated with branches and particles, and the possible formation mechanism was proposed. Nano-boron carbide (B4C) with carbon defect sites further boosts the ECL performance of Fc-TCPP, and thereby, an ECL biosensor for AFP was constructed innovatively. This study provides a simple and effective strategy for the preparation of ECL nanoluminophores taking the advantages of ferrocene and TCPP, opening a new horizon to design porphyrin-based nanomaterials with various structures and expanding their application in biosensing and disease diagnosis.
研究领域:
材料科学
·
分析化学
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 41
·2306517
·
IF 29.4
Wenge Xiao,Endale T. Basore,Guojun Zheng,Xiaofeng Liu,Beibei Xu,Jianrong Qiu
The brightness of doped luminescent materials is usually limited by the ubiquitous concentration quenching phenomenon resulting in an intractable tradeoff between internal quantum efficiency and excitation efficiency. Here, an intrinsic suppression of concentration quenching in sensitized luminescent systems, by exploiting the competitive relationship between light emitters and quenchers in trapping excitation energies from sensitizers, is reported. Although Cr 3+ sensitizers and trivalent lanthanide (Ln 3+ , Ln = Yb, Nd, and Er) emitters themselves are highly susceptible to concentration quenching, the unprecedentedly high-brightness luminescence of Cr 3+ –Ln 3+ systems is demonstrated in the short-wave infrared (SWIR) range employing high concentrations of Cr 3+ , whereby a record photoelectric efficiency of 23% is achieved for SWIR phosphor-converted light-emitting diodes, which is about twice as high as those previously reported. The results underscore the beneficial role of emitters in terminating excitation energies, opening up a new dimension for developing efficient sensitized luminescent materials.
研究领域:
材料科学
·
光学
·
光子学
✓ 已验证
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Xiaoxuan Ren,Xuwen Gao,Guizheng Zou
Optical single molecule detection is normally achieved via amplifying the total emission of photons of luminophores and is strongly anticipated to extend the commercialized application of chemiluminescence (CL). To overcome the limited CL photons of molecule luminophores, herein, a nanocrystal (NC) luminophore self-amplified strategy is proposed to repetitively excite CL luminophores for amplifying the total CL photons per luminophore, which can be exploited to perform CL immunoassays (CLIAs) toward single molecule detection via employing KMnO4 as the CL triggering agent and the dual-stabilizer-capped CdTe NCs as the CL luminophore. KMnO4 can oxidize the S element from each stabilizer of mercaptopropionic acid (MPA) and release enough energy to excite the CdTe core for flash CL. The substantial MPA around each CdTe core enables every CdTe luminophore to be repetitively excited and give off amplified total CL photons in a self-enhanced way. The CL of CdTe NCs/KMnO4 can release all photons rapidly, and the collection of all these photons can be utilized to determine the model analyte of thyroid-stimulating hormone antigen (TSH) with a limit of detection of 5 ag/mL (S/N = 3), which is corresponding to about 2–4 TSH molecules in a 20 μL sample. The whole immunologic operating process can be terminated within 6 min. This strategy of repetitively breaking the CL reaction involving chemical bonds within one luminophore is promising for semi-automatic as well as fully automatic single molecule detection and extends the commercialized application of CL immunodiagnosis.
研究领域:
分析化学
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生物技术
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纳米技术
·
免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·Vol. 60
·期 34
·15098-15112
·
IF 3.9
Zeng Daiwei,Li Zhou,Su Yue,Liu Chen-chen,Li Fang,Chen Jianxing,Lin Tengfei,Lin Cong,Zhao Chunlin,Gao Min,Wu Xiao,Wen Na,Chen Weisheng
As advanced optical storage materials, fluorescent hydrogels still face significant challenges in achieving multi-stimulus responsiveness and broad spectral tunability. This study presents a novel aggregation-induced emission (AIE)-active hydrogel system with dual fluorescence emission characteristics, synthesized via a facile one-pot approach. Through controlled freeze–thaw processing cycles, tetrakis(4-hydroxyphenyl)ethylene (TPE-4OH) and tetrakis(4-aminophenyl)ethylene (TPE-4NH 2 ) were successfully incorporated into the three-dimensional polymer matrix. The developed system demonstrates programmable fluorescence modulation through three distinct stimulus–response mechanisms: solvent composition (DMSO/H 2 O), pH variation (HCl/NaOH), and ion coordination (Fe 3 ⁺/EDTA). Notably, these stimuli enable precise individual or synergistic control over both fluorescence intensity and chromatic characteristics of the hydrogel system. Furthermore, fluorescence modulation precision was enhanced through proportional control of the dual fluorophores, enabling tunable ion recognition sensitivity and a spectral shift from blue to green emission. The integrated multi-stimulus responsiveness and reversible emission characteristics confer dual functionality to this hydrogel system: serving as a patterned substrate fabrication platform while demonstrating promising applicability in multidimensional encryption technologies, analyte-specific sensing probes, and smart optical devices. Graphical abstract Multistimuli-responsive hydrogel system with color changing capabilities.
研究领域:
材料科学
·
光学存储
·
荧光材料
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智能聚合物
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化学传感器
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Guangxin Wang,Huimin Wang,Minggang Liu,Ruoxi Liu,Lianjie Qin,Shufeng Liu,Jing Yu
A novelty cathodic electrochemiluminescent recognition technique was constructed successfully with the imprinted polypyrrole surface on multi-walled carbon nanotubes (MWCNT) modified glassy carbon electrode (GCE) for the direct detection of norfloxacin without additional luminophore. Norfloxacin (NFLX), the analyte target, acting simultaneously as the imprinted template molecule and as the ECL luminophore to generate ECL with S 2 O 8 2− . The incorporation of MWCNTs significantly enhanced the electrical conductivity, thereby amplifying the ECL signal and improving sensitivity. The recognition sites of the imprinted polypyrrole surfaces contribute for the selective recognition of NFLX, which in fine produces light emission upon electrical stimulation with up to 36-fold higher than that on non-imprinted electrode (NIP/MWCNT/GCE). This finding demonstrates the rapid and efficient analytical capability of the imprinted polypyrrole for NFLX-specific detection. Notably, this work not only propose a rapid, cost-effective and luminophore-free methodology for the direct detection of antibiotics, but also opens up the possibility of developing new ECL recognition technique for determining biomolecules, drugs, pesticide residues.
研究领域:
分析化学
·
电化学
·
生物传感器
·
材料科学
·
环境监测
·
药物分析
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2020
·
IF 6.785
Dexin Du,Jiangnan Shu,Mingquan Guo,Mohammad A. Haghighatbin,Di Yang,Zhiping Bian,Hua Cui
Recently, nanoluminophores with the potential-resolved multicolor electrochemiluminescence (PRMCECL) property have emerged and shown promising applications in sensitive, selective, and accurate bioassays, bioimaging, and multicolor emitting devices. However, only limited PRMCECL nanoluminophores and their applications in ratiometric biosensors eliminating proportional errors have been reported. Herein, a novel PRMCECL nanoluminophore was synthesized by encapsulating CdS quantum dots (CdSQDs) into MOF-5 (CdSQDs@MOF-5). Using K2S2O8 as a coreactant, two electrochemiluminescence (ECL) peaks, ECL-1 centered at 685 nm and ECL-2 centered at 475 nm, were observed at −1.4 and −1.8 V, respectively. Related ECL mechanisms have been proposed. Based on the potential-resolved ECL signals, a label-free differential ECL immunosensor for the determination of cardiac troponin I (cTnI) was established by assembly of poly(diallyldimethylammonium chloride), CdSQDs@MOF-5, and cTnI antibody-functionalized silver nanoparticles on the surface of the fluorine-doped tin oxide electrode subsequently. In the presence of cTnI, cTnI was captured by the sensing interface, leading to an increase in ECL-1 and ECL-2 intensity. cTnI could be determined in the range of 0.01–1000 pg/mL with a detection limit of 5.01 fg/mL using the intensity difference between ECL-1 and ECL-2. This work provides a new family member of PRMCECL nanoluminophores. The proposed label-free differential ECL immunosensor provides a new strategy based on potential-resolved ECL signals, which could effectively eliminate the additive error and show better sensitivity, selectivity, and accuracy for the detection of cTnI than the single-signal strategy and ratiometric strategy.
研究领域:
电化学
·
纳米技术
·
生物传感器
·
心脏病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2018
·Vol. 10
·期 7
·722
·
IF 2.935
Meiran Feng,Laiping Fang,Fujun Guan,Siying Huang,Yinwei Cheng,Yancui Liang,Hefeng Zhang
A facile and efficient approach for design and synthesis of organic fluorescent nanogels has been developed by using a pre-synthesized polymeric precursor. This strategy is achieved by two key steps: (i) precise synthesis of core–shell star-shaped block copolymers with crosslinkable AIEgen-precursor (AIEgen: aggregation induced emission luminogen) as pending groups on the inner blocks; (ii) gelation of the inner blocks by coupling the AIEgen-precursor moieties to generate AIE-active spacers, and thus, fluorescent nanogel. By using this strategy, a series of star-shaped block copolymers with benzophenone groups pending on the inner blocks were synthesized by grafting from a hexafunctional initiator through atom transfer radical copolymerization (ATRP) of 4-benzoylphenyl methacrylate (BPMA) or 2-(4-benzoylphenoxy)ethyl methacrylate (BPOEMA) with methyl methacrylate (MMA) andtert-butyldimethylsilyl-protected 2-hydroxyethyl methacrylate (ProHEMA) followed by a sequential ATRP to grow PMMA or PProHEMA. The pendent benzophenone groups were coupled by McMurry reaction to generate tetraphenylethylene (TPE) groups which served as AIE-active spacers, affording a fluorescent nanogel. The nanogel showed strong emission not only at aggregated state but also in dilute solution due to the strongly restricted inter- and intramolecular movement of TPE moiety in the crosslinked polymeric network. The nanogel has been used as a fluorescent macromolecular additive to fabricate fluorescent film.Keywords:star-shaped polymeric precursor;fluorescent nanogel;AIE-active spacer
研究领域:
材料科学
·
聚合物化学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）