iScience
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2025
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IF 4.1
Yingming Wang,Lingyan Xu,Lu Liang,Zhentao Qin,Zhuochen Cai,Kaifu Zhang,Chongqi Liu,Lixiang Lian,Wei Zheng,Yanyan Lei,Qinzeng Hu,Binbin Zhang,Tao Wang,Wanqi Jie
Organic scintillators occupy a significant niche in the realm of fast neutron detection. Nevertheless, the cultivation of large-sized and high-quality organic single crystals has persistently posed a formidable challenge. 9,10-diphenylanthracene (DPA) was chosen as a prospective material for fast neutron detection. The two-dimensional nucleation growth mechanism of DPA was revealed by detailed analysis of the microstructure of the crystal surface. By systematically optimising the growth parameters and processes, the nucleation and growth of DPA were effectively controlled, and centimetre-sized single crystal (27×20×7 mm 3 ) was successfully grown. The thermally activated fluorescence emission mechanism of DPA crystal was revealed using power-dependent and temperature-dependent photoluminescence spectroscopy. The fluorescence intensity increased with increasing temperature, suggesting its potential for neutron/gamma pulse shape screening (PSD) at high temperatures. High-quality crystal was prepared, achieving a FOM of 3.56, underscoring the potential of DPA as a superior material for fast neutron detection applications.
研究领域:
材料科学
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核物理
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产品关联
DOI
PubMed
高影响因子
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
·
2025
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IF 1.9
Yingming Wang,Lingyan Xu,Lu Liang,Binghui Zhang,Zhentao Qin,Chongqi Liu,Lixiang Lian,Wei Zheng,Yanyan Lei,Qinzeng Hu,Shuai Song,Tao Wang,Wanqi Jie
Exploring organic single crystals that can reliably operate in high-temperature environments is crucial for advancing fast neutron detection in extreme conditions. In this study, large-sized (34 × 20 × 8 mm3) and high-quality 9,10-diphenylanthracene (DPA) single crystals were grown using a seed-assisted temperature-reduced crystallization method. The crystals showed strong thermal stability with a melting point of 252.4 °C. Under γ-ray excitation, the crystals demonstrated a high light yield of 25,776 photons/MeV with excellent linearity over a broad energy spectrum. Their radiation detection performance was systematically investigated under variable temperature conditions. Temperature-dependent pulse height spectrum revealed a steady increase in light output from -20 °C to 10 °C, followed by a significant decrease beyond 50 °C. However, the DPA detector retains 72.1% of its light output at 150 °C compared to 20 °C, demonstrating its excellent performance at high temperatures. Neutron/gamma pulse shape discrimination(PSD) was tested from −25 °C to 45 °C. At room temperature, the detector achieved a maximum figure of merit (FOM) of 3.82 at 2900 ± 100 keVee. Importantly, across the entire −25 °C to 45 °C range, the FOM remained above 1.5 for energies above 200 keVee, demonstrating stable PSD performance. These results collectively demonstrate the strong overall performance of DPA single crystals in both light yield and neutron/gamma discrimination. These findings underscore the great potential of DPA single crystals for fast neutron detection in high-temperature environments, establishing them as a valuable material for future applications in extreme conditions.
研究领域:
核医学
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辐射探测
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材料科学
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核物理
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仪器科学与技术
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产品关联
DOI
高影响因子
RSC Advances
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2015
·Vol. 5
·期 86
·70211-70219
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IF 3.84
Hongwei Chen,Wenqing Liang,Yi Chen,Guojian Tian,Qingchen Dong,Jinhai Huang,Jianhua Su
A series of novel 9,10-di(naphthalen-2-yl)anthracene (ADN) derivatives were designed and synthesized as blue fluorescent emissive materials by inducing diverse aromatic groups to the C-2 position of ADN. UV-Vis absorption, fluorescence emission spectroscopy and cyclic voltammetry (CV) were carried out to generally investigate the relationships between the physical properties and molecular structures. Moreover, four non-doped OLED devices adopting OCADN, FA3PADN, FA4PADN and OC4PADN as emitting materials were fabricated to study their electroluminescence (EL) performances. Among them, a device based on OCADN exhibited highly efficient sky-blue emission with a current efficiency of 2.25 cd A−1, power efficiency of 1.13 lm W−1 and CIE(x, y) coordinate of (0.16, 0.30) at 8 V. In addition, the device of OC4PADN showed efficient blue emission with a CIE(x, y) coordinate of (0.16, 0.14) at 8 V.
研究领域:
材料科学
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光学
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DOI
高影响因子
ACS Applied Bio Materials
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2020
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IF 0
Xiaoyi Lv,Xiaoyun Xu,Tian Miao,Xufeng Zang,Chao Geng,Yanping Li,Bo Cui,Yishan Fang
9,10-Diphenylanthracene cubic nanoparticles (DPA CNPs) with aggregation-induced emission characteristic (AIEgens) were synthesized through a facile reprecipitation method; then, a bright and stable electrochemiluminescence (ECL) signal can be observed when the DPA CNPs were modified at the glassy carbon electrode (GCE) in the presence of Tri-n-propylamine (TPA). This phenomenon is ascribed to the molecules with restricted movement that greatly blocked the energy leakage during the relaxation of the excited state, which facilitated the emission of energy in the form of photons. In addition, the size confinement effect of DPA CNPs in the aggregated state effectively enhanced the ECL emission. The application of DPA CNPs with AIE characteristics in an electrochemiluminescence immunosensor has not been reported. In this contribution, a free-label aggregation-induced electrochemiluminescence immunosensor based on DPA CNPs was fabricated and a simple strategy for ultrasensitive detection of aflatoxin B1 (AFB1) was proposed. The ECL signal is quenched linearly in the range of 0.01 pg/mL to 100 ng/mL for AFB1, and the detection limit is 3 fg/mL. In summary, the prepared sensor exhibits high sensitivity, acceptable accuracy, good anti-interference ability and stability, and satisfactory detection toward AFB1 in walnut samples. Therefore, the fabricated immunosensor will have significant applications in the fields of food, medicine, and so on.
研究领域:
食品安全检测
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生物医学工程
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分析化学
✓ 已验证
DOI
ANALYTICA CHIMICA ACTA
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2018
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IF 5.123
Ying Ding,Qingyan Jia,Yongmei Wen,Weimin Liu,Jiechao Ge,Jiasheng Wu,Hongyan Zhang,Pengfei Wang
The distance-dependent based sensing mechanism, such as fluorescence resonance energy transfer (FRET) and surface plasmon resonance (SPR) absorption of gold nanoparticles , has been used widely in visual detection. In this work, we report another distance-dependent detection method for nucleoside triphosphates (NTPs) based on carbon dots (CDs) ( 1 O 2 donor) and 9, 10-diphenylanthracene-2-boronic acid (DABA, 1 O 2 acceptor). The CDs can generate singlet oxygen ( 1 O 2 ) which allows diffusion within 200 nm. Thus, the distance between CDs and DABA decreased through binding of NTPs (<200 nm), leading to absorption changes of DABA under light irradiation due to 1 O 2 trapping. This sensing system ( [email protected] ) has high selectivity for the detection of NTPs due to the double molecular recognition and a linear response in the 0–80 μM concentration range was accomplished with the detection limit as low as 4.35 μM.
研究领域:
分析化学
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纳米技术
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生物化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Jiaojiao Fang,Cihui Zhou,Yukai Chen,Liang Fang,Wei Wang,Cheng Zhu,Yaru Ni,Chunhua Lu
To avoid secondary environmental pollution caused by photocatalysts in their applications, our work offers a new strategy for fabricating photocatalytic films based on plasmon-enhanced triplet–triplet annihilation upconversion (TTA-UC). Polydimethylsiloxane (PDMS) films containing platinum (II)-octaethylporphyrin and 9,10-diphenylanthracene (PtDPAP), and gold nanoparticles (AuNPs) were prepared. While graphene (G) was used as an adhesive and conductive layer, CdS nanoparticles were deposited onto the films (AuNPs-PtDPAP/G/CdS) by plasma glow discharge pretreatment. The AuNPs-PtDPAP film had an enhancement in the green-to-blue upconversion compared with the pristine PtDPAP film. CdS can utilize the AuNPs plasmon-enhanced TTA-UC photons to realize efficient photocatalytic reactions. The pseudo-first-order rate constant (kpfo) of the optimized active and stable photocatalytic film, 0.3 AuNPs-PtDPAP/G/CdS, reached 0.294 h–1 for tetracycline degradation under green light irradiation. Its kpfo in decomposing tetracycline under visible light is 2.62 times higher than that of the PtDPAP/G/CdS. The reported composite films provide a strategy to improve the photocatalytic activity and promote the practical applications of nanosize photocatalysts.
研究领域:
材料科学
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环境科学
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纳米技术
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光化学
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产品关联
DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 7
·2151-2159
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IF 5
Jiaojiao Fang,Chengyang Zhu,Yaru Ni,Chunhua Lu,Zhongzi Xu
Strong triplet–triplet annihilation upconversion (TTA-UC) of sub-bandgap photons is significant for the low-energy photon capture in photocatalytic technology. Herein, we report a strategy to enhance TTA-UC for achieving efficient photocatalysis, via the collaborative coupling of double local electromagnetic fields from the photonic band gap (PBG) and localized surface plasmon resonance (LSPR) effects. An upconversion–photocatalysis film was constructed by depositing CdS on a poly(vinylidenefluoride) inverse opal photonic crystal consisting of metal nanoparticles and platinum(II)-octaethylporphyrin & 9,10-diphenylanthracene. As a result of the synergism of double local electromagnetic fields, the TTA-UC fluorescence intensity is increased by 10.74 times at most with the highest quantum yield of 11.05%, which far surpasses that improved by the single action of different PBG and LSPR effects. Based on the TTA-UC process enhanced by the synergism, the upconversion–photocatalysis film exhibits a 3.29-fold and 5.25-fold increase in the photocatalytic degradation rate of organic compounds under visible and green light, respectively. This work offers a distinctive way to fortify the TTA-UC fluorescence for efficient photocatalysis.
研究领域:
材料科学
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光催化
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光学
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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）