Polymers
·
2019
·Vol. 11
·期 12
·1953
·
IF 3.164
Meng Liu,Xiaochen Zhang,Dong Wang,Jiaji Cheng,Xiujiang Pang,Wenjuan Qu,Chunxu Li,Shaoxiang Li
Novel fluorinated polyhedral oligomeric silsesquioxane (POSS) acrylic copolymers were synthesized by the radical solution polymerization. The superhydrophobic coating was prepared using a one-step breath figure method. Chemical constitution, morphology, hydrophobicity, and anticorrosion ability of as-prepared coatings were investigated by the corresponding equipment. The addition of proper fluorinated POSS can synchronously promote the formation of the micro-nano convex structure and the enrichment of fluorinated groups on the surface. Compared to commercial acrylic coating, the fluorinated POSS coating presented enhanced anticorrosion performance. The impedance was the highest and the corrosion current density was the lowest for superhydrophobic coating with 25 wt % fluorinated POSS.Keywords:fluorinated POSS acrylic copolymers;superhydrophobic coating;one-step breath figure method;chemical constitution;morphology;hydrophobicity;anticorrosion performance
研究领域:
材料科学
·
表面工程
·
防腐蚀技术
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DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2016
·
IF 3.897
Shuyan Yang,Hongbo Fan,Yuanqi Jiao,Zhuodi Cai,Peng Zhang,Yangping Li
The mechanical properties and the possible micro-structure of nitrile-butadiene rubber/lithium perchlorate/polyhedral oligomeric silsesquioxane (NBR/LiClO 4 /POSS) nanocomposites have been investigated thoroughly. The interactions among Li + cations, CN groups and C O C groups bring in a novel network structure consisting of several kinds of effective crosslinks, causing an increase in the glass transition temperature of POSS, as well as in the crosslink contribution ( G c ) and the constraint contribution ( G e ), which facilitates strong interface cohesion between POSS and NBR matrix and a well dispersion of POSS. The addition of POSS not only increases the crosslinking density of NBR/LiClO 4 /POSS nanocomposites , but also improves the 300% modulus and tensile strength greatly. Therefore, a possible micro-structure has been proposed to express the experimental observation.
研究领域:
材料科学
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高分子科学
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纳米技术
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DOI
高影响因子
ANALYST
·
2018
·Vol. 144
·期 5
·1555-1564
·
IF 3.864
Yiqiong Chen,Dandan Zhu,Xinyue Ding,Guomin Qi,Xucong Lin,Zenghong Xie
A novel polyhedral oligomeric silsesquioxane (POSS)-containing aptamer-modified hybrid affinity monolith with excellent hydrophilicity and unique architecture without Si–OH groups is presented herein, and the nonspecific adsorption caused by the hydrophobic nature of the monolithic column or polar interaction with silanol groups is minimized. Via a simple “one-pot” procedure, hydrophilic monomers were facilely polymerized with the POSS-methacryl substituted (POSS-MA) and aptamer; a highly hydrophilic nature was obtained and the lowest contact angle of 11° was achieved. By using ochratoxin A (OTA) as the model analyte, highly selective recognition of OTA in the mixture was achieved and the control of nonspecific interactions and the cross-reactivity of OTB and AFB1 were significantly improved. The recovery yield of OTB caused by nonspecific adsorption in the resultant monolith was only about 0.1% and remained steady even with the coexistence of a high OTB content (OTA : OTB = 1 : 50), which reached the best level to date and was obviously less than the 6.1% occurring in the hydrophobic POSS-containing control monolith, 8.3% in the POSS-PEI@AuNPs@aptamer affinity monolith and 18.7% in the silica-hybrid affinity monolith. When applied to wine and wheat samples, the nonspecific adsorption was significantly reduced and efficient discrimination of OTA was obtained with better results than that of the hydrophobic POSS-containing affinity column. This provides an attractive tool for minimizing the nonspecific adsorption for highly selective on-column recognition.
研究领域:
分析化学
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材料科学
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食品安全
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DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2018
·
IF 3.716
Yiqiong Chen,Maolin Chen,Jinxin Chi,Xia Yu,Yongxuan Chen,Xucong Lin,Zenghong Xie
A novel aptamer-based polyhedral oligomeric silsesquioxane (POSS)-containing hybrid affinity monolith has been prepared with a facile “one-pot” process simultaneously via “free radical polymerization” and “thiol-ene” click reaction, and used for on-line selective extraction and practical analysis to trace ochratoxin A (OTA). By using the ternary porogenic mixture composed of water/DMF/PEG, a homogeneous polymerization mixture with POSS chemicals, acrylate-based monomers and aptamer aqueous solution was obtained, and the copolymerization of POSS chemicals, polymer monomers and aptamer aqueous solution was systematically studied. Characterizations such as the morphology, FT-IR and fluorescence spectra, mechanical stability, dynamic binding capacity, cross-reactivity and selectivity of the resultant affinity monolith were also evaluated. Attributed to the porous monolithic structure and aptamer-based affinity interaction, acceptable selective recognition and recovery yields towards trace OTA were obtained. With a 5-fold volume enrichment, the limit of detection (LOD) and limit of quantitation (LOQ) of OTA in fortified beer samples were gained at 0.025 ng/mL (S/N = 3) and 0.045 ng/mL (S/N = 10), respectively. It could be competent for the sensitive measure of actual OTA residues in real beer samples. In comparison with the previously reported strategies containing common “sol-gel” chemistry, the proposed protocol to fabricating aptamer-modified POSS-containing hybrid affinity monolith showed a simpler preparation with acceptable selectivity and higher recovery to trace OTA.
研究领域:
分析化学
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食品安全
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材料科学
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DOI
PubMed
高影响因子
LUMINESCENCE
·
2022
·Vol. 37
·期 8
·1290-1299
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IF 2.613
Dan Li,Peipei Zhou,Yufei Hu,Gongke Li,Ling Xia
In recent years, fluorescent organic–inorganic hybrid nanomaterials have received much interest as potential fluorescent sensor materials. In this study, fluorescent organic–inorganic hybrid nanomaterials (POSS@ANT) were created using polyhedral oligomeric silsesquioxane as the precursor and 9,10-bromoanthracene as the monomer. The morphology and composition of POSS@ANT, as well as its pore characteristics and fluorescence properties were studied. POSS@ANT displayed steady fluorescence emission at an excitation wavelength of 374 nm. Next, a β-carotene fluorescence sensor was developed using the capacity of β-carotene to quench the fluorescence of POSS@ANT. The quenching process is linked to acceptor electron transfer and energy transfer, and the sensor has a high selectivity for β-carotene. This β-carotene fluorescence analysis method that we established has a linear range of 0.2–4.3 mg/L and a detection limit of 0.081 mg/L. Finally, it was used to quantify β-carotene in health products, the recovery rate was 91.1–109.9%, the relative standard deviation (RSD) was 2.2–4.3%, and the results were comparable with the results of high-performance liquid chromatography. The approach is reliable and can be used to determine β-carotene in health products.
研究领域:
纳米技术
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分析化学
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材料科学
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健康产品分析
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DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 47
·9744-9753
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IF 6.331
Kun Zhang,Xiaoni Wang,Minggang Tian,Zhiming Gou,Yujing Zuo
In recent years, it has been found that Cu2+, Fe3+, and amino acids play an irreplaceable and subtle role in organisms and have attracted the considerable attention of many researchers. Therefore, it is vital to design visual indicators to reveal the relationships between metal ions and amino acids. However, there have been few reports on this vigorous subject. Fortunately, based on the different coordination effects between metal ions and boron groups, we have designed an accessible fluorescent probe (PSI-A). Borane was introduced as an ion-sensitive group to form a novel POSS-based fluorescent probe, which achieves fascinating performance, in situ dynamic multiple detection, excellent photostability, and enervative biological toxicity. PSI-A exhibited predominant selectivity and sensitivity to Cu2+/amino acids and Fe3+/amino acids sequence reactions in HepG2 cells and zebrafish. The fluorescence of PSI-A was quenched by Cu2+, which can be recovered by adding Asp, Ser, Arg, Ace or Trp. Additionally, the fluorescence of PSI-A quenched by Fe3+ can be restored after adding Asp. PSI-A is available to monitor Cu2+/amino acids and Fe3+/amino acids sequence reactions and can be repeated for at least three consecutive cycles without a fatigued performance. Therefore, this multifunctional fluorescent probe may have prospective application potentials in the biological field.
研究领域:
分析化学
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生物化学
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材料科学
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生物科学
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DOI
PubMed
高影响因子
COLLOID AND POLYMER SCIENCE
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2018
·Vol. 296
·期 9
·1533-1544
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IF 1.967
Xu Yiting,Li Jilu,Sun Xiaoqing,He Kaiwei,Li Meng,Shen Tong,Li Yuntong,Li Cong,Yuan Conghui,Zeng Birong,Dai Lizong
In this work, novel mesoporous silica spheres were prepared by calcination of golf-shaped silica microspheres, which were fabricated via a typical sol-gel method by using synthetic amphiphilic block copolymer poly(acrylate isobutyl polyhedral oligomeric silsesquioxane)- b -poly(dimethylaminoethyl methacrylate co-styrene)) (PAPOSS- b -(PDMAEMA- co -PSt) and anionic surfactant sodium dodecyl sulfate (SDS) as dual-template. Firstly, three different POSS-based block copolymers were synthesized through subsequent homopolymerization of acrylate isobutyl POSS and chain extension of dimethylaminoethyl methacrylate (DMAEMA) and styrene with various feed ratios via reversible transfer radical polymerization (RAFT). These amphiphilic block polymers and SDS were utilized as cooperative template to golf-shaped silica microspheres. The electrostatic interaction between protonated PDMAEMA segments and anion surfactant as well as the strong interaction between PAPOSS segments and silicon source plays the dominant role in forming golf-shaped silica spheres. Moreover, the surface morphology of silica spheres can be tuned by varying molar ratio of PDMAEMA/PAPOSS. The resulting golf-shaped silica microspheres were further calcined to give mesoporous silica spheres which exhibited a BET surface area of 1031 m 2 g −1 , a total pore volume of 0.826 cm 3 g −1 , and a narrow pore size distribution centered at 3.20 nm.
研究领域:
材料科学
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化学工程
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纳米技术
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DOI
高影响因子
DESALINATION
·
2022
·
IF 11.211
Libing Zheng,Kai Wang,Deyin Hou,Xiaolin Jia,Zhichao Zhao
Membrane fouling and wetting were two unsolved issues for membrane distillation (MD), fostered an enduring pursuit of well-designed superhydrophobic membrane. In this work, a novel hierarchically-structured superhydrophobic membrane was prepared by grafting octavinyl-polyhedral oligomeric silsesquioxane (OVPOSS) onto polyvinylidene fluoride (PVDF) membrane via UV-induced thiol-ene click reaction after the hydroxylation and sulfhydrylation pretreatment . The POSS/PVDF membrane exhibited high roughness and superhydrophobicity, and the pore structure was optimized with smaller size but centralized distribution. For the fabricated superhydrophobic membrane with low sliding angle (about 7.5°), the maintaining of Cassie-Baxter state and the “slip effect” significantly mitigated membrane fouling and wetting, due to the retardation of the liquid invasion into the gas-solid interface. It was found that scaling was the leading fouling for the commercial PVDF membrane, and the interaction between Ca 2+ and carboxyl was the main organic fouling mechanism . While for the POSS/PVDF membrane, organic fouling via hydrophobic-hydrophobic interaction was the main membrane fouling and the scaling was significantly alleviated. The fabricated POSS/PVDF composite membrane had significant superiority over commercial PVDF membrane, which showed promising potential in challenging wastewater treatment . Additionally, this work also offered a new and facile method for superhydrophobic membrane fabrication.
研究领域:
材料科学
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化学工程
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环境工程
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DOI
高影响因子
BIOMACROMOLECULES
·
2024
·
IF 5.5
Lin Liang,Yulin Hu,Yueze Hong,Zhihui Wu,Hao Chen,Quankui Lin
Myopia is a global public health issue. Rigid contact lenses (RCLs) are an effective way to correct or control myopia. However, bioadhesion issues remain one of the significant obstacles limiting its clinical application. Although enhancing hydrophilicity through various surface treatments can mitigate this problem, the duration of effectiveness is short-lived and the processing involved is complex and costly. Herein, an antiadhesive RCLs material was designed via 8-armed methacrylate-POSS (8MA-POSS), and poly(ethylene glycol) methacrylate (PEGMA) copolymerization with 3-[tris(trimethylsiloxy)silyl] propyl methacrylate (TRIS). The POSS and PEG segments incorporated P(TRIS-co-PEGMA-co-8MA-POSS) (PTPM) material was obtained and their optical transparency, refractive index, resolution, hardness, surface charge, thermal features, and wettability were tested and optimized. The antibioadhesion activities, including protein, lipid, and bacteria, were evaluated as well. In vitro and in vivo results indicated that the optimized antibioadhesive PTPM materials present good biocompatibility and biosafety. Thus, such POSS and PEG segments containing material were a potential antibioadhesive RCL material option.
研究领域:
材料科学
·
聚合物化学
·
眼科学
·
生物医学工程
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DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2018
·Vol. 6
·期 13
·1965-1972
·
IF 4.776
Xia Yu,Hongliang Song,Jing Huang,Yongxuan Chen,Ming Dai,Xucong Lin,Zenghong Xie
A novel hybrid affinity monolith with a high aptamer coverage density was developed via a highly efficient modification of aptamer@gold nanoparticles (Apt@AuNPs) on a well-controlled 3D skeletal POSS–polyethylenimine (PEI) matrix. The effects of amine reagents and the skeletal structures of the hybrid monoliths on the modification efficiency of Apt@AuNPs were studied, and the resultant Apt@AuNPs@POSS–PEI1200 monolith was proposed with a high coverage density of aptamer of up to 1413 pmol μL−1, which is 4–5 times more than the coverage density when modified with Apt@AuNPs that was reported previously. Characterization including morphology, spectra analysis, mechanical stability, binding capacity and specificity studies was also carried out. Significant specific recognition targeting of ochratoxin A (OTA) was achieved with a detection limit as low as 0.06 ng mL−1. High recoveries of OTA were achieved of 92.6 ± 1.3% to 94.7 ± 1.4% (n = 3), while the cross-reactivity towards analogues such as ochratoxin B (OTB) and aflatoxin B1 (AFB1) was weak. This highlights a facile approach to POSS-based affinity monoliths with a high aptamer coverage density for sensitive and selective recognition of a trace target (OTA).
研究领域:
分析化学
·
材料科学
·
食品安全
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 14
·8559-8568
·
IF 4.036
Wei-Hua Xu,Shi-Jing Yan,Jian-Qing Zhao
Polyhedral oligomeric silsesquioxane (POSS) and a highly effective 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)-based flame retardant co-curing agent (D-bp) were chemically introduced into the 4,4′-diaminodiphenyl methane (DDM)/diglycidyl ether of bisphenol A (DGEBA) epoxy system to create organic–inorganic hybrid epoxy composites with simultaneously improved flame retardancy and mechanical properties. The results revealed that POSS/D-bp/DGEBA hybrid composites exhibited excellent comprehensive performance, in which the V-0 criterion of the UL-94 test was passed and the peak of heat release rate (P-HRR) was significantly decreased from 939 to 371 kW m−2 when the phosphorus content was only 0.25 wt%. The glass transition temperature (Tg) increased by 16.2 °C and obvious improvement in the mechanical properties was also evidenced.
研究领域:
材料科学
·
化学工程
·
高分子科学
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产品关联
DOI
PubMed
高影响因子
WEAR
·
2025
·
IF 6.1
Yuchen Sun,Chaoyang Zhang,Qiangliang Yu,Mohamed Kamal Ahmed Ali
This study aims to synthesize oil additives tailored for harsh space conditions, particularly atomic oxygen (AO) exposure, to enhance the lubrication performance of aerospace systems. To achieve this, polyhedral oligomeric silsesquioxane (POSS)-based ionic liquid (IL) with varying alkyl chain lengths (n = 8,16) were synthesized through nucleophilic substitution reactions, using octyl-functionalized polyhedral oligomers and halogenated hydrocarbons as precursors. The tribological and resistance AO irradiation properties of POSS-based IL additives (POSS-8-DOSS and POSS-16-DOSS) into PAO10 base oil were systematically investigated in atmospheric and vacuum environments. The properties of the formulated oil revealed that adding 1 wt% POSS-8-DOSS resulted in improved thermal stability compared to POSS-16-DOSS. Conversely, POSS-16-DOSS exhibited better performance in terms of corrosion resistance. Notably, the formulated oil containing POSS-based IL additives reduced the friction coefficient by 39.67–40.38 % in the atmospheric environment and by 65.94–79.89 % in the atomic oxygen radiation environment. Furthermore, the antiwear properties improved by 77.50–90.14 % in the atmospheric environment. Eventually, the results of this study provide valuable insights for advancing the field of aerospace lubrication.
研究领域:
航空宇航科学与技术
·
材料科学
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摩擦学
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化学合成
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表面工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）