ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2018
·Vol. 410
·期 18
·4519-4526
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IF 3.307
Du Jiayan,Zhao Mengxin,Huang Wei,Deng Yuequan,He Yi
We report a molybdenum oxide (MoO 3 ) nanomaterial-based three-input logic gate that uses Sn 2+ , NO 2 − , and H + ions as inputs. Under acidic conditions, Sn 2+ is able to reduce MoO 3 nanosheets, generating oxygen-vacancy-rich MoO 3− x nanomaterials along with strong localized surface plasmon resonance (LSPR) and an intense blue solution as the output signal. When NO 2 − is introduced, the redox reaction between the MoO 3 nanosheets and Sn 2+ is strongly inhibited because the NO 2 − consumes both H + and Sn 2+ . The three-input logic gate was employed for the visual colorimetric detection of Sn 2+ and NO 2 − under different input states. The colorimetric assay’s limit of detection for Sn 2+ and the lowest concentration of NO 2 − detectable by the assay were found to be 27.5 nM and 0.1 μM, respectively. The assay permits the visual detection of Sn 2+ and NO 2 − down to concentrations as low as 2 μM and 25 μM, respectively. The applicability of the logic-gate-based colorimetric assay was demonstrated by using it to detect Sn 2+ and NO 2 − in several water sources.
研究领域:
分析化学
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材料科学
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环境科学
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DOI
PubMed
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Kezheng Tao,Qiang Li,Qingfeng Yan
The organic–inorganic hybrid metal halides with chiral structures have attracted great attentions in the field of optoelectronic functional materials, especially for nonlinear optics. To date, second harmonic generation (SHG) properties of several classes of chiral hybrid halides with different metal ions have been reported. However, SHG-active tin(II)-based chiral materials are rarely explored, hindering deep understandings of the relationship between their structures and SHG properties. Herein, Sn 2+ ions are successfully introduced into chiral hybrid perovskites, and four new species of chiral hybrid perovskites ( R / S -α-PEA)SnX 3 (X = Cl and Br, PEA = phenylethylammonium) are obtained. The as-grown crystals are in P 2 1 2 1 2 1 space group, with highly distorted [SnX 6 ] octahedral units forming 1D chain structures in the lattice, due to the effect of stereochemically active lone pair 5s 2 electrons in Sn 2+ . Such crystals have an SHG response of ≈1.4× Y-cut α-quartz for ( S -α-PEA)SnBr 3 and ≈0.9× Y-cut α-quartz for ( S -α-PEA)SnCl 3 at 1020 nm excitation, with high polarization ratio of SHG signals as well as wide bandgaps and transparency windows in the meanwhile. This work opens up a new platform for discovering more novel tin(II)-based chiral perovskites with superior nonlinear optical properties in the future.
研究领域:
材料科学
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光学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 37
·21085-21093
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IF 12.732
Yalong Zou,Jiabo Le,Yufeng Cao,Na An,Yang Zhou,Jianming Li,Deyu Liu,Yongbo Kuang
The attractive photoelectrochemical (PEC) water splitting for hydrogen fuels always requires new semiconductors, which provide stronger visible light absorption with suitable band positions. Sn(II) complex oxides are expected to offer such new possibilities. In this work, a quaternary (Sn–Ta–W–O) Tetragonal Tungsten Bronze type Sn(II) oxide (Sn-TTB) and its photoanodes are reported for the first time. Results indicate that Sn-TTB has a bandgap of 1.85 eV with intense absorption up to 600 nm and the flat-band potential at −0.10 V vs. RHE. The IPCE of its photoanode is 10 times higher than that of the pyrochlore polymorph, owing to its better light absorption and higher carrier density. Experiments and calculations suggest strong interaction between Sn(II) ions and the W/TaO6 skeleton, facilitating the delocalization of charge carriers. Such an exploration indicates that the structural engineering of Sn(II) oxide may provide more exciting opportunities for solar energy conversion materials.
研究领域:
材料科学
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能源转换
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yunfei Bai,Panwang Zhou,Xinyu Yang,Hongyuan Zhao,Ziying Wen,Qichao Meng,Haibo Sun,Chao Li,William W. Yu,Feng Liu
In addition to the easy oxidation of tin(II) (Sn2+), the poor repeatability in synthesizing luminescent Sn2+-based halide perovskites can be attributed to the structural diversity among Sn compositions, with many structures failing to exhibit luminescence. Furthermore, compared to luminescent compounds, there is insufficient attention on the photophysical properties of these nonluminescent compositions, which impedes a deeper understanding of the relationship between their structures and optical properties. In this work, we report two Sn2+-based halide compounds, (DFPD)6SnBr8 and (DFPD)2SnBr4 (DFPD+ = 4,4-difluoropiperidinium). Both exhibit excellent air stability, with the former demonstrating a high luminescence efficiency of ∼92%, while the latter is essentially nonluminescent. Theoretical calculations suggest that the nonluminescence of (DFPD)2SnBr4 arises from charge transfer between two adjacent [SnBr4]2– units in the first excited state. In contrast, significant structural distortion and localization of excitons in (DFPD)6SnBr8 indicate that its emission originates from self-trapped excitons. As a demonstration, we prepared an X-ray scintillator based on (DFPD)6SnBr8 with a high light yield up to 27,600 ph/MeV and a low detection limit of 84.7 nGy/s, which is significantly better than the commercial LuAG/Ce scintillator (22,000 ph/MeV, 2.32 μGy/s).
研究领域:
材料科学
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光学
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理论计算
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产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
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2023
·
IF 10.7
Zhenfeng Huang,Huixin Xie,Tingting Hu,Jiarui Zeng,Xiaofei Tian,Zhenqiang Wu
Natural Monascus yellow pigments (MYPs) have received considerable attention due to their great safety and biological activities, but their unsatisfactory color tonality and stability limit their applications. A novel encapsulate system for hydrophilic yellow pigments (HYPs) were investigated through stable ternary nanocomplexes using quercetin-Sn (II), bovine serum albumin (BSA), and chitosan (CS) in this work. Layer-by-layer assembly preparation of HYPs-loaded quercetin-Sn (II)-BSA-CS nanocomplexes were verified by fluorescence spectroscopy, fourier transform infrared spectroscopy , X-ray photoelectron spectra, and 1 H nuclear magnetic resonance. A hyperchromic effect on HYPs was obtained since their maximum ultraviolet absorption wavelength redshifted from 352 nm to 364 nm first due to the interaction with quercetin-Sn (II) and further redshifted to 408 nm due to ternary conjugation, greatly improved the color tonality and dye-uptake. The HYPs-loaded nanocomplexes showed irregular glomerate nanosphere with 252–382 nm of particle size. Their conjugation remitted HYPs degradation under various environmental stresses (thermal, light, and ascorbic acid treatment), and had a great color stability response to pH change. Higher lipid-lowering and antioxidant activities were detected in the nanocomplexes than free HYPs. This study provides a new way for fabricating novel MYPs with great physicochemical stability, bright color and hypolipidemic activities.
研究领域:
食品科学
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材料科学
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生物技术
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药学
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产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2020
·Vol. 27
·期 8
·2717-2723
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IF 4.857
Zhuoran Lv,Wujie Dong,Bingquan Jia,Shaoning Zhang,Miao Xie,Wei Zhao,Fuqiang Huang
Graphical Linked by MOFs : Sn 2 O(CN 2 ) with loosely packed crystal structure possesses a metal–organic framework-like porous framework, which mitigates volume expansion and Sn atom aggregation. Sn 2 O(CN 2 ) shows a significantly enhanced lithium storage performance compared to traditional tin oxide. Metal-organic frameworks (MOFs) can become promising electrode materials for advanced lithium-ion batteries (LIBs), because their loosely packed porous structures may mitigate volume expansion and metal atom aggregation, which occur at the respective metal oxides. However, they suffer from poor electrical conductivity and irreversible structural degradation upon charge/discharge processes, which impede their practical utilization. Herein, we investigate MOF-like Sn 2 O(CN 2 ) as a new electrode material. The conductive yet flexible [N=C=N] linkers are tilted between [Sn 4 O] nodes and cross-linked into a porous quasi-layered structure. Such structure offers abundant channels for fast Li-ion transport and tolerance of enormous volume expansion. Notably, anisotropic [N=C=N] 2− arrays hardly migrate so that Sn 0 nanodots are physically separated via robust [N=C=N] 2− framework during discharge, thereby effectively preventing the formation of large Sn islands. Owing to the structural advantage, the Sn 2 O(CN 2 ) electrode exhibits an initial Coulombic efficiency as high as ∼80 %. With the addition of graphite as conductive supporter, the electrode provides 978 mAh g −1 at 1.0 A g −1 even after 300 cycles. Such MOF-like carbodiimides hold potential for the advanced electrodes in LIBs and other battery systems.
研究领域:
材料科学
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能量存储
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电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Zhenheng Zhang,Shengyi Yang,Muhammad Sulaman,Zhenhua Ge,Jinming Hu,Hui Peng,Libin Tang,Bingsuo Zou,Yurong Jiang
Tin-based perovskites have attracted more and more attention in recent years due to their non-toxic properties. However, the poor stability of Tin-based perovskites severely limits its further applications. In order to obtain more stable Tin-based perovskites, in this work, Cs ions are introduced as a precursor besides SnF 2 during the synthesis of Tin-based perovskites. Further, poly(N-vinylcarbazole) (PVK) is introduced into the above perovskites to improve the separation rate of photogenerated carriers and to suppress both O 2 and H 2 O diffusion into Tin-perovskites. Enhanced-performance Tin-based perovskite photodetectors with hybrid bulk-heterojunctions were obtained, and our experimental data showed that the responsivity and the specific detectivity of the photodetectors ITO/ZnO/FA 0.9 Cs 0.1 SnBr 3 :PVK/MoO 3 /Ag reached to 409.8 A/W and 1.23 × 10 14 Jones, respectively, under 25.3 μW/cm 2 405 nm illumination at − 0.2 V. In addition, the devices also show great stability, whose photocurrent decreases only slightly after its deposing in glove box for 14 days. Thus, such a kind of combing A-site cation engineering with surface-passivating engineering on hybrid bulk-heterojunction provides a facile method for high-performance Tin-perovskite photodetectors with high-stability.
研究领域:
材料科学
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光子学
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纳米技术
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半导体器件
✓ 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）