ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Kunming Li,Shengfei Meng,Shan Xia,Xiuyan Ren,Guanghui Gao
In recent years, the use of smart windows to adjust sunlight to achieve energy conversion has received increasing attention. In this paper, a novel smart window was easily prepared by using thermochromic hydrogels as an interlayer and indium tin oxide films as an electric heating layer. The shielding transmission rates of visible and near-infrared light reached 88.3 and 85.4% at the temperature of 25 °C, respectively. However, the transmittance at a light wavelength of 550 nm was greater than 70% after applying voltage. The smart windows with different components could possess thermochromic temperature ranging from 28 to 35 °C, which was suitable for daily life. The smart window could maintain a stable reversible thermochromic transition. Importantly, the time of light transition and the demand of energy efficiency could be adjusted by controlling the magnitude of the output voltage, which benefited the development of energy-efficient materials.
研究领域:
材料科学
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能源技术
·
化学工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Mi Feng,Yumeng Wang,Bin He,Xinyan Chen,Jian Sun
Carbon dots (CDs) derived from biomass have attracted increasing interest not only due to their sustainability, biocompatibility, and application in metal ion detection but also due to the valorization of waste renewable materials. Herein, tunable photoluminescent (PL) chitin-based CDs were prepared using a deep eutectic solvent (DES) made from a quaternary ammonium salt and sulfonic acid in one step. The DES played two roles during the synthesis procedure: CD formation and surface modification. The PL emission wavelength of the CDs was red-shifted via a strategy of heteroatom doping and size adjustment by changing the structure of the DES and experimental temperature. The structure of sulfonic acid in the DES was the major factor affecting the PL emission peaks of the obtained CDs. The nitrogen-, oxygen-, and sulfur-doped CDs with the highest PL emission peaks at 515 nm were prepared with ChCl/sulfamic acid (1:2 molar ratio) treatment at 150 °C for 5 h. The results demonstrated that the different sizes and surface amino and hydroxyl groups were the main reasons for the red shift of PL emission properties. Additionally, the prepared CDs exhibited high sensitivity for Fe3+ with a limit of detection of 0.43 μM, and the concentration range was 40–600 μM.
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 8
·3964-3973
·
IF 2.936
Li Sun,Yuechao Yin,Pengcheng Lv,Wenxian Su,Lixin Zhang
The controllable synthesis of Au–Ag alloy nanoparticles (NPs) without any hazardous or expensive chemical agent has been a challenge. This paper reports on the Chinese wolfberry fruit extract-assisted synthesis of Au–Ag alloy NPs with homogeneous composition, uniform alloy microstructure and a small average size less than 15 nm. The composition and the surface plasmon resonance (SPR) wavelength of Au–Ag alloy NPs could be linearly adjusted by the synthesis time in one-pot. Au–Ag alloy NPs were characterized by means of various techniques, and then their synthesis mechanism was discussed. The obtained Au–Ag alloy NPs were used as photocatalysts for the reduction reactions of 2-, 3-, and 4-nitrophenol and exhibited superior photocatalytic activity and stability. The rate constants of the above photocatalytic reactions could be linearly tuned by the composition of the Au–Ag alloy NPs and also by their addition amount, displaying a new method to control the rate constant. Furthermore, based on the controllable synthesis, the rate constant could even be predetermined just through setting the synthesis parameters of the Au–Ag alloy NPs.
研究领域:
纳米技术
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材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2022
·
IF 10.508
Jie Xue,Ziyu Wang,Andrew Comstock,Zhiyu Wang,Herman H. Y. Sung,Ian D. Williams,Dali Sun,Junwei Liu,Haipeng Lu
Recent discoveries of novel physics in two-dimensional (2D) magnetic materials have sparked the search of new layered magnetic semiconductors. Compared to the traditional inorganic 2D van der Waals crystals, hybrid organic–inorganic metal–halide frameworks offer significantly enhanced chemical and structural versatility, where their optical, electronic, and magnetic properties can be readily modulated with both organic and inorganic components. Here, we reported a series of new Fe–Cl-based layered double perovskites LnMIMIIICl8, [n = 4, L = phenylethylammonium or chiral R-(+)-β-methylphenethylammonium and n = 2, L = 1,4-butanediammonium; MI = Ag/Na; MIII = Fe/In]. UV–vis measurements show that their optical band gaps are highly tunable by varying the organic cations, MI ion, and MIII ion. Magnetic susceptibility measurements suggest an antiferromagnetic coupling between the nearest FeIII–FeIII, where the Curie–Weiss temperature, Néel temperature, and frustration factors can be easily modulated with their compositions and dimensionality. Our study demonstrates the rich and interesting magnetic properties in these layered transition-metal–halide double perovskites and paves the way for design of multifunctional magnetic materials.
研究领域:
材料科学
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凝聚态物理
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无机化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·
IF 21.8
He Linhan,Fan Yafei,Chen Yao,Huang Yuxiang
Transparent wood (TW) has emerged as a promising alternative to glass for sustainable architecture, yet its rigid and passive nature limits its adaptability for dynamic light and temperature regulation. We report a thermally reversible transparent wood (TRTW) featuring a semi-interpenetrating polymer network architecture constructed from polyethylene glycol (PEG) and poly (ethylene glycol) diacrylate (PEGDA) infused into a delignified wood scaffold. This architecture enables reversible transitions between stiff and soft states via PEG crystallization/melting and dynamically modulates light transmittance (from 80.6% to 48.2%) through refractive index mismatch. The TRTW exhibits excellent shape adaptability at elevated temperatures (bendability exceeding 170°), enhanced toughness (elongation increased by 540%), and superior impact resistance (9.81 kJ/m 2 , ~ 12× that of glass). It also features an adjustable phase transition temperature (T m ≈ 30 °C, T c = 12.96–18.85 °C) and high latent heat (up to 95.8 J/g), enabling heat storage and temperature buffering for passive building energy regulation. The synergy of thermo-reversible optics and mechanics within a wood-based framework provides a novel strategy toward intelligent and energy-efficient building skins and optical devices.
研究领域:
材料科学
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可持续建筑
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聚合物科学
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节能建筑材料
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光学材料
✓ 已验证
产品关联
DOI
高影响因子
Polymer Chemistry
·
2013
·Vol. 4
·期 17
·4588-4595
·
IF 5.231
Zong-Quan Wu,Deng-Feng Liu,Ying Wang,Na Liu,Jun Yin,Yuan-Yuan Zhu,Long-Zhen Qiu,Yun-Sheng Ding
A range of poly(3-hexylthiophene)-b-poly(quinoxaline-2,3-diyl) rod–rod diblock copolymers was synthesized in one pot via sequential monomer addition with a Ni(II) complex as a single catalyst at room temperature. The block copolymerization was proved to proceed in a living/controlled chain-extension manner, affording well-defined poly(3-hexylthiophene)-b-poly(quinoxaline-2,3-diyl) block copolymers with controlled molecular weights, narrow molecular weight distributions, and tunable compositions. The synthesized block copolymer was found to self-assemble into well-defined vesicle supramolecular structures in mixed solvents of chloroform and methanol. The assembly in solution induced unique light emissions with the light emission color varying from red to purple and blue depending on solvents used.
研究领域:
高分子化学
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材料科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2016
·
IF 3.993
Quan-Xing Mao,Shuang E,Jun-Mei Xia,Ru-Sheng Song,Yang Shu,Xu-Wei Chen,Jian-Hua Wang
Tunable fluorescent emission and applications in both in vitro and in vivo imaging of hydrophobic carbon nanodots (CNDs) with rapid penetration capability are reported. The hydrophobic CNDs are prepared via hydrothermal treatment of ionic liquid 1-ethyl-3-methylimidazolium bromide and exhibit excitation-dependent photoluminescence behavior along with a red-shift in the excitation/emission maxima with concentration. The quantum yields of the as-prepared CNDs are in the range of 2.5–4.8% at an excitation wavelength of 300–600 nm. The rapid penetration behavior (within 1 min) of CNDs into the cell membrane significantly reduces the sample treatment time and avoids potential fluorescence quenching induced by the interaction between CNDs and samples. A co-location study reveals that the hydrophobic CNDs are distributed mainly in the lysosome. The potentials of the hydrophobic CNDs as fluorescent probe in in vitro and in vivo imaging are well demonstrated by the labeling of HeLa cells, MCF-7 cells, A549 cells, and Kunming mice.
研究领域:
纳米技术
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生物医学工程
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材料科学
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细胞生物学
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成像科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2022
·Vol. 8
·期 1
·2200704
·
IF 8.856
Jiamin Wu,Yunyi Liang,Changlei Xia,Xinxin Ma,Benhua Fei,Yingji Wu,Shengbo Ge,Jianxiong Lu,Jianzhang Li,Zhenhai Xia
Transparent wood is promising for energy-saving buildings, but its poor mechanical properties in transverse direction dramatically limit its applications. To resolve the problem, a novel processing technology is developed to fabricate laminated transparent woods. Various kinds of transparent woods are prepared by stacking partially impregnated woods in different styles and then compressing them. The wood template contents in these transparent woods are significantly increased by the partial impregnation compared with traditional full impregnation. The influence of lamination structures on the properties of the transparent woods is also evaluated. As the number of laminate layers increases from one to three, the optical transmittance reduces from ≈70% to 44%, respectively, while the haze increases from 32% to 66%. The isotropy of scatter light distribution could be achieved by controlling lamination structures for more uniformity in indoor illumination. The mechanical properties of the transparent woods are dramatically enhanced, and the highest tensile and flexural strength can reach 134.0 and 192.3 MPa, respectively. Additionally, the direction-dependence of mechanical strength is reduced by cross-laminating. The adjustable optical features, excellent mechanical strengths, and low thermal conductivity endow the prepared transparent woods a promising candidate for energy-efficient buildings applications.
研究领域:
材料科学
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土木工程
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能源效率
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Guojun Zhou,Sidan Wang,Nan Zhang,Yilin Mao,Jun Zhou,Zhiguo Xia,Xian-Ming Zhang
Despite increasing research interests in chiral hybrid metal halides for photonic applications, the chiral-identified multicolor-tunable photoluminescence (PL) remains a fundamental challenge for multilevel anti-counterfeiting. Herein, 0D antimony(III) enantiomers, ( R / S -C 5 H 14 N 2 ) 2 SbCl 5 ·2Cl, are designed and synthesized via chiral induction using R / S -3-aminopiperidine dihydrochloride as structural templates. Hydrogen bonding networks between C 5 H 14 N 2 + and [SbCl 5 ] 2− contribute to the chiral helical structures with distinct asymmetry factors, facilitating efficient chiral transfer across organic–inorganic interfaces. Incredibly, R - and S -enantiomers exhibit an unprecedented excitation-dependent PL behavior with chiral differentiation, leading to multicolor-tunable emissions across the visible-light spectrum, from blue to white to yellow. This originates from the competitive transitions between the triplet-state ( 3 P n →S 0 ) self-trapped excitons (STEs) of [SbCl 5 ] 2− and the singlet-state (S 1 →S 0 ) fluorescence of R / S -C 5 H 14 N 2 + . Beyond that, chiral organic ligands break the inorganic symmetry, facilitating spin–orbit coupling and excited-state splitting of R - and S -enantiomers, which governs the electron absorption transitions to achieve the chiral-identified multicolor-tunable PL. These materials are further employed in multilevel anti-counterfeiting by fabricating these precise images into periodic pixel arrays. This work establishes a paradigm for designing eco-friendly chiral emitters with superior PL tunability, as well as provides fundamental insight into multi-channel radiative transition mechanisms.
研究领域:
材料科学
·
光物理
·
手性光电子学
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防伪技术
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无机化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 7
·2764-2770
·
IF 6.4
Jing Cao,Xiaoyu Xiong,Ji Zhou
Chemically tuned organic–inorganic layered (C4H9NH3)2CuClxBr4−x perovskites have been synthesized and characterized. The crystal structure was investigated by X-ray diffraction (XRD). The morphology was explored by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The chemical structure was studied by Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. The thermal stability was determined by thermogravimetric analysis (TGA). The optical properties were investigated by UV-Vis absorption spectroscopy and spectroscopic ellipsometry. Thermochromism in (C4H9NH3)2CuClxBr4−x crystals was observed and the mechanism was determined by a combination of differential scanning calorimetry (DSC), in situ temperature-dependent Raman spectroscopy, and in situ temperature-dependent XRD. This study paves the way to explore the structure–property relationships in two-dimensional perovskites and offers inspiration for the development of eco-friendly thermochromic devices.
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
危险品化学品经营许可证（带存储）