Gels
·
2022
·Vol. 8
·期 8
·459
·
IF 4.432
Xue-Chun Yang,Song Gao,Sha-Qi Fu,Xuan Yao,Zheng Jiao,Jing-Tai Zhao,Zhi-Jun Zhang,Ling-Li Cheng
Both sodium alginate and polyethyleneimine (PEI) have a good ability to adsorb heavy metal ions. PEI and sodium alginate were used as important precursors to synthesize positively charged carbon nanoparticles (p-CNDs) with hydroxyl and carboxyl, and negatively charged carbon nanoparticles (n-CNDs) with amino, respectively. The carbon nanoparticles (CNDs) aerogel with a large specific surface area and rich functional groups were constructed by self-assembled p-CNDs and n-CNDs via electrostatic attraction for adsorption of heavy metal ions in water. The results show that CNDs aerogel has good adsorption properties for Pb2+(96%), Cu2+(91%), Co2+(86%), Ni2+(82%), and Cd2+(78%). Furthermore, the fluorescence emission intensity of CNDs aerogel will gradually decrease with the increase in the adsorption rate, indicating that it can detect the adsorption process synchronously. In addition, the cytotoxicity test reveals that CNDs have good biocompatibility and will not cause secondary damage to biological cells.Keywords:self-assembled;Pb2+;Cu2+;adsorption
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2017
·Vol. 4
·期 19
·1700514
·
IF 4.279
Yuefei Wang,Wei Qi,Ruizhe Xing,Qiguo Xing,Rongxin Su,Zhimin He
Precise control over the chiral self-assembly of synthetic molecules is of fundamental interest in chemistry and material science. This study reports the hierarchical chiral self-assembly of a ferrocene-modified dipeptide in evaporating droplets. The capillary flows during solvent evaporation changed greatly on the self-assembly of the peptides, leading to the chiral amplification and the formation of well-defined nanohelixes. By changing the initial temperature difference (Δ T ) between the droplets and the substrate, it is possible to control the fluid mechanical effects under two distinct regimes: the “coffee ring” effect caused by outward capillary flow and the Rayleigh convection by buoyancy force. This allows us to control the orientational growth of peptide nanohelixes with their axis parallel or perpendicular to the substrate. The results highlight the vital roles of capillary flow in directing the hierarchical chiral self-assembly of peptides and offer new opportunities for the fabrication of highly ordered chiral nanomaterials.
研究领域:
化学
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材料科学
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生物分子工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 13
·2259
·
IF 5.719
Peiyan He,Minghao Shen,Wanli Xie,Yue Ma,Jianming Pan
Uranium is an indispensable part of the nuclear industry that benefits us, but its consequent pollution of water bodies also makes a far-reaching impact on human society. The rapid, efficient and convenient extraction of uranium from water is to be a top priority. Thanks to the super hydrophilic and fast adsorption rate of microgel, it has been the ideal adsorbent in water; however, it was too difficult to recover the microgel after adsorption, which limited its practical applications. Here, we developed a uranyl-ion affine and recyclable microgel container that has not only the rapid swelling rate of microgel particles but also allows the detection of the adsorption saturation process by the naked eye.Keywords:microgel;self-assembly;adsorption
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD SCIENCE
·
2025
·Vol. 90
·期 3
·e70154
·
IF 3.4
Jianhua Yuan,Ying Wu,Yucong Shi,Lei Zhou,Yanjun Zhang,Chengmei Liu,Junzhen Zhong
In this study, a series of characterizations and analyses of fibrous β-lactoglobulin self-assembly (FBS) and worm-like β-lactoglobulin self-assembly (WBS) were carried out to investigate the key factors for the formation of self-assemblies of β-lactoglobulin under two different induced conditions. Compared with natural β-lactoglobulin, FBS was always positively charged, increasing to 9.69 mV when heated for 10 h, whereas WBS was always negatively charged, decreasing to −20.73 mV when heated for 20 min. Electrostatic interactions play a crucial role in the formation of both FBS and WBS. The free sulfhydryl content decreased by 10.4% at 20 min of heating compared with that at 1 min of heating. β-Lactoglobulin converted the exposed free sulfhydryl groups to disulfide bonds when heated under neutral conditions, and disulfide bonds played a key role in the formation of WBS. The surface hydrophobicity of FBS reached its maximum at 1 h of heating, while that of WBS reached its maximum at 15 min of heating. The hydrophobic interactions played an extremely important role in the formation of the two self-assemblies. The investigation of the formation mechanism of FBS and WBS is of great significance for the preparation of β-lactoglobulin self-assembled gels. Practical Application Probing the formation mechanism of β-lactoglobulin self-assemblies provides new methods and ideas for the preparation of β-lactoglobulin gels, which is important for improving the structure and properties of gel carriers prepared from bio-based materials.
研究领域:
食品科学
·
蛋白质化学
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 17
·2408
·
IF 5.3
Shijie Wang,Dongxue Song,Lijun Liao,Bo Wang,Zhenzi Li,Mingxia Li,Wei Zhou
Doping engineering of metallic elements is of significant importance in photocatalysis, especially in the transition element range where metals possess empty ‘d’ orbitals that readily absorb electrons and increase carrier concentration. The doping of Mn ions produces dipole interactions that change the local structure of BiOCl, thus increasing the specific surface area of BiOCl and the number of mesoporous distributions, and providing a broader platform and richer surface active sites for catalytic reactions. The combination of Mn doping and metal Bi reduces the forbidden bandwidth of BiOCl, thereby increasing the absorption in the light region and strengthening the photocatalytic ability of BiOCl. The degradation of norfloxacin by Bi/Mn-doped BiOCl can reach 86.5% within 10 min. The synergistic effect of Mn doping and Bi metal can change the internal energy level and increase light absorption simultaneously. The photocatalytic system created by such a dual-technology combination has promising applications in environmental remediation.Keywords:photocatalysis;BiOCl;manganese doping;self-assembly
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Polymer Chemistry
·
2017
·Vol. 8
·期 24
·3755-3763
·
IF 5.375
Zhigang Cui,Hui Cao,Yi Ding,Pan Gao,Xinhua Lu,Yuanli Cai
Herein, we present supramolecular compartmentalization of an ABC triblock copolymer single-chain nanoparticle (SCNP) using coordination-driven orthogonal intramolecular self-assembly in aqueous solution. A well-defined ABC-type triblock copolymer was synthesized via visible-light-mediated RAFT aqueous sequential block copolymerization. It possesses protonated imidazolium-motifs in the A-, NH3+-motifs in C-, and hydroxyl-motifs in B-block. Coordination-driven orthogonal self-assembly locally occurring upon deprotonation (A-block within pH 3.3–4.4 and C-block within pH 5.3–6.4) has been evidenced by UV-vis spectroscopy, 1H NMR, dynamic light scattering (DLS), NMR diffusion-ordered spectroscopy (DOSY), and atomic force microscopy (AFM). A blank regime of pH 4.4–5.3 guarantees locally orthogonal intramolecular self-assembly without mutual interference. Dialysis and pH-cycling results illustrate that the inherent different subdomains are discrete and can individually respond to an external stimulus, with potential biomimetic functions in terms of sub-10 nm ultrafine internal heterogeneity.
研究领域:
材料科学
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化学
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纳米技术
·
生物材料
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Li Liu,Mengting Yue,Jinrong Lu,Jinshan Hu,Yinghua Liang,Wenquan Cui
This paper reports that hybrid titanium dioxide (TiO 2 ) packaged self-assembly perylenetetracarboxylic acid diimide (PTCDI) by self-assembly. These were synthesized through simple mechanical milling that has great photocatalytic performance under visible light . The PTCDI@TiO 2 composite had high activity for the degradation of phenol and 2,4-dichlorophenol, which were 2.3 and 3.2 times of the monomer PTCDI, respectively. After three cycles, the activity of the composite catalyst remained at 70%. Further analysis showed that the photocatalytic activity and stability are mainly due to the enhancement of the charge mobility by the π-π conjugated structure in PTCDI. Moreover, the good energy level matching between PTCDI and TiO 2 helps to separate the electron-hole, thus improving the photocatalytic performance of the composite. The origin of photocatalytic activity was greatly improved due to holes and O 2 − , which was mainly attributed to the strong interaction between PTCDI and TiO 2 .
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
CHEMISTRY LETTERS
·
2015
·Vol. 44
·期 4
·471-473
·
IF 1.23
Sun Jiadi,Meng Long,Zhu Ye,Cui Yan,Liu Xiaoya
Herein, gels composed of nanoscaled particles were obtained via one-step self-assembly of poly(γ-glutamic acid) (γ-PGA) and folic acid (FA). The outcomes show that the amount of added FA plays a crucial role in the liquid–gel transition. The resulting gels revealed an increase in both storage modulus (G′) and loss modulus (G′′) with increasing amount of FA. This paper describes an effective and promising strategy to prepare gels based on self-assembly of copolymers or particles in an organic medium.
研究领域:
材料科学
·
生物化学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2020
·Vol. 10
·期 11
·2207
·
IF 4.324
Wan-Cheng Zhang,Meng-Dai Luoshan,Peng-Fei Wang,Chu-Yun Huang,Qu-Quan Wang,Si-Jing Ding,Li Zhou
The self-assembly process of metal nanoparticles has aroused wide attention due to its low cost and simplicity. However, most of the recently reported self-assembly systems only involve two or fewer metals. Herein, we first report a successful synthesis of self-assembled Ag@AuCu trimetal nanoplates in aqueous solution. The building blocks of multibranched AuCu alloy nanocrystals were first synthesized by a chemical reduction method. The growth of Ag onto the AuCu nanocrystals in the presence of hexadecyltrimethylammonium chloride (CTAC) induces a self-assembly process and formation of Ag@AuCu trimetal nanoplates. These nanoplates with an average side length of over 2 μm show a porous morphology and a very clear boundary with the branches of the as-prepared AuCu alloy nanocrystals extending out. The shape and density of the Ag@AuCu trimetal nanoplates can be controlled by changing the reaction time and the concentration of silver nitrate. The as-assembled Ag@AuCu nanoplates are expected to have the potential for wide-ranging applications in surface-enhanced Raman scattering (SERS) and catalysis owing to their unique structures.Keywords:trimetal;self-assemble;nanoplates;AuCu alloy
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 31
·25656-25661
·
IF 3.289
Zhixiang Jiang,Katarzyna Matras-Postolek,Ping Yang
Several kinds of hydrophobic quantum dots (QDs) including CdSe, CdTe, CdSe/CdxZn1−xS, and CdTe/CdSe/ZnSe were fabricated via organic synthesis to observe morphology variation during shell coating. CdSe QDs prepared at a relatively high temperature revealed a hexagonal structure and rod morphology. On being coated with a CdxZn1−xS shell, tetrahedron and rod morphologies were observed. It was found that the reaction temperature and injection rate play important roles. The photoluminescence properties of the core/shell QDs depended strongly on their preparation conditions such as temperature and ligands. For CdSe cores created at a relatively low temperature, CdxZn1−xS shell coating resulted in the formation of cubic CdSe/CdxZn1−xS core/shell QDs. This is ascribed to the role of a CdS interlayer. In contrast, multishell CdTe/CdSe/ZnSe QDs revealed a spherical morphology. Furthermore, the self-assembly of QDs with hexagonal structures occurs while regular assembled structures were not observed for QDs with a cubic morphology according to their transmission electron microscopy images. This is ascribed to a dipole force between QDs. This phenomenon is just related to the morphology and crystal structures rather than their composition.
研究领域:
材料科学
·
纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2016
·Vol. 23
·期 12
·1-8
·
IF 1.969
Kong Zhineng,Wu Wenting,Yan Jing,Wu Baoying,Zhou Yan,Du Wenqi,Qi Zhengjian
Amphiphilic triblock copolymers containing PDMS and PEG segments were synthesized here by metal-free click chemistry. The structures of PEG-b-PDMS-b-PEG copolymers were characterized through FT-IR, 1 H NMR and GPC. The synthesis procedures of copolymers were carried out under benign conditions without any metal participation. And the self-assembly properties were discussed by fluorescent probe, DLS and TEM result in a lower critical aggregation concentration (CAC), nanoparticles size ranging from 127 nm to 172 nm and formulation of vesicle-like nanoparticles, respectively. Additionally, TGA shows that copolymers exhibits good thermal stability.
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
·
2022
·
IF 0.672
Limin Wu,Jinming Chu,Fei Wang,Wei Liu,Yongmin Guo,Yi Li,Baozong Li,Yonggang Yang
A series of azobenzene liquid crystals containing one amino acid residue were synthesized. They exhibit smectic mesophases. The compounds derived from alanine can self-assemble into twisted nanoribbons. The molecules organized in a monolayer structure within the nanoribbon. Circular dichroism characterization indicated that the neighboring liquid crystal cores packed in a chiral structure. FT-IR spectra indicated that the nanoribbons were caused by H-bonding and association of hydrocarbon chains.
研究领域:
材料科学
·
生物化学
✓ 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）