SOLID STATE SCIENCES
·
2015
·
IF 1.839
Yan-Jing Gu,Bing Yan
A series of organic–inorganic hybrid materials were prepared by linking lanthanide (Eu 3+ , Sm 3+ ) complexes to mesoporous SBA-15/SBA-16 through 8-hydroxybenz[de]anthracen-7-one modified silane (HBA-Si) as linker. The physical characterizations of these hybrids revealed that they all have high surface area, uniformity in mesostructure. The luminescence properties of these covalently bonded materials (denoted as Ln(HBA-SBA-15) 3 phen and Ln(HBA-SBA-16) 3 phen) were compared with ternary complexes (Ln(HBA) 3 phen) (Ln = Eu, Sm). Eu(HBA-SBA-15(16)) 3 phen hybrids display better thermal stability, whose luminescent lifetimes and quantum efficiencies were matchable with those of Eu(HBA) 3 phen complex in spite of its much lower effective condensation of Eu 3+ species. In addition, the luminescent performance of functionalized SBA-15 hybrids was more favorable than that of functionalized SBA-16 hybrids, revealing that SBA-15 was a better host material for lanthanide complex than mesoporous silica SBA-16.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2018
·
IF 9.89
Desheng Pan,Yong Li,Zheng Han,Bing Li,Chinwei Wang,Teng Yang,Da Li,Chuljin Choi,Zhidong Zhang
Incorporation of distinct organic molecules and inorganic fragments into a single crystalline lattice of organic–inorganic hybrid magnets has aroused much attention for novel physical properties and applications. Yet, there has been no report on the discovery of ordered organic–inorganic hybrid magnets with room-temperature magnetism. Here, we report a simple chemical solution method for synthesis of new organic–inorganic hybrid magnets built by organic Fe(teta)1.5 and inorganic FeSex segments. By changing the reaction temperature, the size of these hybrid nanostructures can be tuned from 100 nm to 4 μm, and their shapes vary from nanoparticles and nanobelts to nanoplates. Selected area electron diffraction and X-ray diffraction reveal that hybrid (β-Fe3Se4)4[Fe(teta)1.5] nanoplates are a single phase in a tetragonal crystal structure with the space group I4cm (108). The thermal magnetic curve between 5 and 900 K was characterized using a vibrating sample magnetometer, revealing room-temperature ferrimagnetism of the (β-Fe3Se4)4[Fe(teta)1.5] nanoplates with the Curie temperature (TC) higher than 530 K. In the case of hybrid nanoplates synthesized at 483 K, a giant coercivity value reaching 11 kOe is obtained at 5 K. Our study not only provides guidance for developing a chemical solution method for controllable fabrication of a new class of organic–inorganic hybrid materials but also enhances the magnetic ordering temperature of such magnetic organic–inorganic hybrid materials to be higher than room temperature.
研究领域:
材料科学
·
物理化学
·
磁学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 3
·487
·
IF 5.3
Xiaolei Shang,Xiaoling Men,Qifeng Kuang,Shaojie Li,Da Li,Zhidong Zhang
Organic–inorganic hybrid materials built by inorganic and organic building units have attracted intensive interest in the past decades due to unique chemical and physical properties. However, rare organic–inorganic hybrid materials show excellent permanent magnetic properties. Here, we develop a facile chemical solution method to bottom-up synthesize a new hybrid (Fe2Se3)2[Fe(dien)2]0.9. This hybrid phase with the space groupP21/c(14) possesses a rodlike shape with a diameter of 100–2000 nm and a length of 5–50 µm. The hybrid rods are ferrimagnetic with a Curie temperature (TC) of 11 K. They show a high coercivity (HC) of 4.67 kOe and a saturation magnetization (MS) of 13.5 emu/g at 2 K. Compared with orthorhombic (FeSe2)2Fe(dien)2, the excellent magnetic performance of the hybrid rods is ascribed to the monoclinic hybrid structure built by Fe(dien)2complexes and Fe2Se3double chains. Our study provides guidance for connecting inorganic fragments of FeSe2single chains, Fe2Se3double chains or β-Fe3Se4layers with Fe(dien)2complexes for organic–inorganic hybrid phases with varied crystal structures and magnetic properties.Keywords:organic–inorganic hybrid materials;chemical solution method;Fe2Se3double chains;coercivity
研究领域:
材料科学
·
磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Kaili Gong,Lin Cai,Congling Shi,Feiyan Gao,Lian Yin,Xiaodong Qian,Keqing Zhou
It is a challenge to integrate organic and inorganic materials to build organic–inorganic hybrid, high-efficiency flame retardants with synergistic effects of both to diminish the fire risks of polymer composites . In this work, an organic–inorganic hybrid strategy was used to prepare leaf-like MXene-based flame retardants (MXene@Bi-MOF) by in situ growth of bimetallic metal–organic frameworks (Bi-MOF) on the surface of MXene and the hybrids were incorporated into epoxy resins to explore their flame retardancy and smoke suppression effects. Specifically, the introduction of MXene@Bi-MOF hybrids not only achieved homogeneous dispersion in EP matrix, but also improved the thermal properties of EP composites, with a 27.7% lower maximum mass loss rate ( R max ) than that of pure EP. In addition, EP composites containing 2 wt% MXene@Bi-MOF exhibited improved fire safety, reduced heat release and inhibited smoke production, as evidenced by a 28.8%, 45.3%, 36.5%, 30.7% and 55.3% drop in peak heat release rate (PHRR), peak smoke production rate (PSPR), total heat release (THR), peak CO production rate (PCO) and smoke factor (SF) value, respectively, as well as growing char yields and lower fire growth index (FGI) value, compared to those of pristine EP. The synergistic action of MXene and Bi-MOF, mainly including the blocking effect of MXene lamellar structure , catalytic carbonization effects as well as catalytic attenuation of the transition metal oxides and gas phase dilution from Bi-MOF, was primarily responsible for the improved fire safety of EP composites.
研究领域:
材料科学
·
化学工程
·
防火安全
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2019
·Vol. 94
·期 5
·1638-1650
·
IF 2.659
Yingqing Zhan,Shumei Zhao,Xinyi Wan,Shuangjiang He
Background The development of efficient and sustainable adsorbents is still a challenge for dye removal in practical applications. Here a method to prepare hierarchical Fe 3 O 4 -derived organic/inorganic hybrid adsorbents for methylene blue removal is demonstrated. Typically, two different structured magnetic nanoparticles were synthesized through solvothermal route and chemical co-precipitation (named as S-Fe 3 O 4 and C-Fe 3 O 4 respectively), which were further functionalized by a novel modified mussel-inspired method with dopamine (DA) and (3-aminopropyl)triethoxysilane (KH550), thus obtaining core-shell Fe 3 O 4 /poly(DA + KH550) adsorbents. Results The effects of microstructure, morphology and surface functionalization on the adsorption performance of core-shell Fe 3 O 4 adsorbents were systematically investigated, thus achieving target structurally optimized core-shell Fe 3 O 4 adsorbents. Especially, the maximum adsorption capacity of core-shell S-Fe 3 O 4 /poly(DA + KH550) adsorbent reached 400.00 mg g −1 because of high specific surface area and abundant active adsorption sites. In addition, the adsorption kinetics and adsorption isotherm fitted a pseudo-second-order model and Langmuir model respectively. Conclusion The recycling process of adsorbent is sustainable in economy and energy by applying an external permanent magnet. In summary, the high adsorption capacity, easy separation and excellent reusability of S-Fe 3 O 4 /poly(DA + KH550) core-shell adsorbents make them promising for dye effluent removal. © 2019 Society of Chemical Industry
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2013
·
IF 0
Xin De Tang,Ye Chen,Fa Qi Yu,Mei Shan Pei
Organic/inorganic hybrid materials based upon stimuli-responsive copolymers have attracted an inceasing attention. Compared with the polymeric materials, these hybrid materials can form aggregates in aqueous solution with much more stable shape-persistance due to the inorganic structure, which facilitate the mass delivery and long-term life. A novel hybrid material based on a new reactive block copolymer, poly(ethylene oxide)-block-poly{3-(trimethoxysilyl)propyl methacrylate-co-N-isopropylacrylamide-co-6-[4-(4-methoxyphenylazo)phenoxy]hexyl methacrylate} [PEO-P(TMSPMA-NIPAM-AzoMA)] was synthesized via atom transfer radical polymerization (ATRP). The vesicles were obtained by self-assembly of the resulting block copolymer in a selective solvent, and then the PTMSPMA block was subjected to hydrolysis and polycondensation reaction to fix vesicle wall in the presence of triethylamine as a catalyst. The photo- and thermo- dual-responsive properties of the vesicles were investigated.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Sheng-Hua Li,Tuo-Yu Zhou,Shu-Yue Yang,Tai-Wen Li,Penglin Zhang,Guang-Yue Li,Chang Li,Hong-Qiao Li,Jing-Yi Li,Qian Zhao
The development of large-scale manufacture for low-cost afterglow materials is critical for their applications and industrializations. Herein, we presented the organic–inorganic afterglow materials with multiple colors based on boric acid (BA) and aromatic dicarboxylic acids or their diesters. These hybrid materials were facilely prepared by a solution-processable method via evaporating the solvent of the BA and organics solution at room temperature. The crystalized BA provided a rigid surrounding for the organics via hydrogen bonds, which effectively inhibited the non-radiative decay of triplet excitons and gave efficient and persistent room temperature afterglow with the phosphorescent quantum yield up to 57.66%. The phosphorescence properties were almost unchanged when deuterated BA was used instead of BA, indicating the deuteration of the hydrogen bond would not suppress the non-radiative decay from the excited state. Furthermore, a phosphorescence resonance energy transfer process was achieved by introducing 4-[4-(Dimethylamino)styryl]-1-methylpyridinium iodide (DASPI) as the energy acceptor. These BA based system could be used as quick-writable phosphorescent inks for multifunctional applications, such as anti-counterfeiting, information storage, encryption, and even for phosphor layer of light emitting diode. These results not only strengthen the understanding of the luminescence mechanism of BA hybrid materials, but also provide a new access to organic–inorganic afterglow materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2016
·Vol. 27
·期 9
·1211-1219
·
IF 1.823
Ting Ye,Juan Li
In this work, 12-tungestocobaltic acid based organic–inorganic hybrid material, [Bmim] 6 CoW 12 O 40 (CoW) was synthesized and applied as a synergist in polypropylene (PP)/intumescent flame retardant (IFR) composites. The flame retardant properties were investigated by the limiting oxygen index (LOI), UL-94 vertical burning test, thermal gravimetric analyzer (TGA), cone calorimeter and scanning electron microscopy (SEM) etc. The results showed that the PP composites with 16 wt% IFR and 1 wt% CoW achieves the UL-94 V-0 rating and gets a LOI value 28.0. However, only add no less than 25 wt% single IFR, can the PP composites obtain the UL-94 V-0 rating, which suggests that CoW has good synergistic effects on flame retardancy of PP/IFR composites. In addition, the SEM and cone calorimeter tests indicated the CoW improves the quality of char layer. The rate of char formation has been enhanced also because of the existence of CoW. It is the combination of a better char quality and a high rate of char formation promoted by CoW that results in the excellent flame retardancy of PP/IFR composites. Copyright © 2016 John Wiley & Sons, Ltd.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2022
·
IF 4.01
Li Yao,Kan-Hao Xue,Haoyu Tong,Chao Chen,Guangda Niu,Wenlong Yang,Jiang Tang
Chiral organic–inorganic hybrid metal halides have a strong structure–property relationship, such as that the modification of their structural dimensionality can adjust their chiroptical properties. Here, based on chiral organic molecules R/S-methylbenzylamine (R/S-MBA), we synthesized new chiral antimony halides with structures from zero-dimensional (0D) (R/S-MBA)2SbI5to one-dimensional (1D) (R/S-MBA)SbI4. The chirality transfer from chiral ligands to the inorganic framework was analyzed based on the electrical dipole moment of R/S-MBA. The anisotropy factor of circular dichroism (gCD) of this 1D chiral (R/S-MBA)SbI4 is determined to be about ∼0.02, which is about 1 order of magnitude larger than that of the 0D (R/S-MBA)2SbI5.
研究领域:
材料科学
·
光学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Naien Zhang,Jie Zhang,Hong Yan,Xiaorong Guo,Qiang Sun,Ruijie Guo
To overcome the flammability and severe dripping of polypropylene (PP), a novel organic-inorganic hybrid K-HBPE@APP (microencapsulated APP by a hyperbranched polyester (HBPE) via silane coupling agent (KH-550)) was obtained and used as a high-efficient flame retardant and smoke suppressant. Herein, HBPE acted as the charring agent for APP. 20 wt% of K-HBPE@APP imparted PP excellent flame retardancy, V-0 rating (UL-94 test) and 82.6% decrease in the peak of heat release rate (PHRR). However, PP with 25 wt% of mechanically mixed APP and HBPE achieved V-1 rating (UL-94 test) and 77.3% decrease in PHRR. That is because the direct contact and sufficient interaction between APP and HBPE gives full play to their synergy. Besides, K-HBPE@APP accelerated the formation of cross-linked P O C/Si O Si/ Si O C/Si O P/P O Φ structures, leading to a strong and compact char layer with a result of dramatic reduction in heat release rate and smoke production. Furthermore, K-HBPE@APP was highly water-resistant and has good compatibility with PP matrix. In particular, the flame-retarded PP had similar tensile strength to pure PP and enhanced impact strength.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2017
·Vol. 46
·期 14
·4602-4608
·
IF 4.029
Aruuhan Bayaguud,JianDa Li,Shan She,Yongge Wei
A reaction strategy for the post-functionalization of hexavanadate derivatives is presented herein. In this study, five polyoxovanadate-based organic–inorganic hybrids TBA2[V6O13{(OCH2)3CCOO(CH2)15CH3}2] (2), TBA2[V6O13{(OCH2)3CCOO(CH2)8CHCH2}2] (3), TBA2[V6O13{(OCH2)3CCOOCH2CF3}2] (4), TBA2[V6O13{(OCH2)3CCOO(CH2CH2O)3CH3}2] (5), and TBA2[V6O13{(OCH2)3CCOO(CH2)12OH}2]·2CH3CH2OH (6) were successfully synthesized via esterification of carboxylic acid groups-containing TBA2[V6O13{(OCH2)3CCOOH}2] (1) with five alcohols possessing different functional groups. These hybrids were characterized by single crystal X-ray diffraction, IR, ESI-MS, 1H and 13C-NMR spectroscopies, and elemental analysis. Moreover, the formation of large vesicles was observed in a mixed solution of compound 2 due to its surfactant-like structure.
研究领域:
无机化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 70
·56974-56981
·
IF 3.84
Songfang Zhao,Yongju Gao,Jinhui Li,Guoping Zhang,Rong Sun,Ching-Ping Wong
A novel protocol to prepare multifunctional magnetic organic–inorganic nanostructured catalysts of Fe3O4@organosilicon/Ag with tailored properties is developed. Such nanostructure design endows the catalysts with superparamagnetism (11.6 emu g−1), excellent oxidation resistance, and catalytic activity. Fe3O4 nanoparticles (NPs) are encapsulated with porous organosilicon via improved self-assembly of a flexible-bridged organosilicon precursor without templates. Subsequently, dispersed Ag NPs are in situ grown on the porous microparticles via a silver mirror reaction. The as-prepared multifunctional catalysts are characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, a vibration sample magnetometer, X-ray diffraction, thermal gravimetric analysis, and nitrogen adsorption and desorption, respectively. The resultant hybrid microparticles possess micro- and nano-pores, and exhibit a small hysteresis loop and low coercivity. Meaningfully, they exhibit exceptional catalytic performance for the reduction of 4-nitrophenol in the presence of sodium borohydride and could be reused at least 9 times with excellent stability by means of convenient magnetic separation. The catalysts could be employed to reduce other dyes such as methylene blue, orange G and rhodamine B, and their corresponding reductions follow pseudo-first-order reactions. Therefore, the proposed structure design and scalable route for the synthesis of hierarchical catalysts can pave the way for synthesizing other catalyst systems to address the diverse reaction demands.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）