Journal of Materials Chemistry B
·
2013
·Vol. 2
·期 10
·1344-1353
·
IF 0
Dongsheng Tan,Zhen Li,Xuelin Yao,Chunlan Xiang,Hong Tan,Qiang Fu
To study the influence of fluorinated surfaces and biomimetic surfaces on the improvement of the blood compatibility of polymers, three monomers containing a fluorinated tail and/or phosphorylcholine groups were designed and synthesized, and were then introduced into polyurethanes based on 4,4′-diphenylmethane diisocyanate (MDI), poly(tetramethylene glycol) (PTMG) and 1,4-butanediol (BDO) via end-capping. The bulk and surface characterization of the polyurethanes was carried out by dynamic mechanical analysis (DMA), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopic analysis (XPS), atomic force microscope (AFM), and water contact angle measurements. The results indicate that the fluorocarbon chains can drive the phosphorylcholine groups to aggregate at the surface of polyurethane, and the two components show spontaneous arrangement to adapt to the environment when in contact with water. The preliminary evaluation of hemocompatibility was carried out via fibrinogen adsorption and platelet adhesion. The fluorocarbon chains and phosphorylcholine groups showed a synergistic effect on the improvement of hemocompatibility.
研究领域:
生物材料学
·
医学工程
✓ 已验证
DOI
PubMed
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Jun Gao,Yiming Liu,Ya Zhong,Qi You,Yi Lin,Sheng Cui,Xiaodong Shen
Since the lotus effect was reported by Barthlott and Neinhuis in 1997, superhydrophobic and superoleophobic materials have received much attention due to special rough morphology and great potential applications in self-cleaning, anti-fouling, corrosion-resistance, and other fields. However, the conventional preparation process of superamphiphobic materials is complicated, including pre- and post-treatments which are used to achieve micro-nano hierarchical structures and low surface energy. In this study, we used methyltrimethoxysilane (MTMS) and 1,1,2,2- tetrahydroperfluorodecyltrimethoxysilane (FAS-17) as precursors and successfully prepared superamphiphobic FAS-17/MTMS composite aerogel via facile sol-gel method. Three-dimensional networks and long fluorocarbon chains formed micro-nano hierarchical structures. As-prepared aerogels had water contact angle (WCA) of 153.68°, oil contact angle (OCA) of 156.28°, water sliding angle (WSA) of 3.32° and oil sliding angle (OSA) of 4.57°, suggesting excellent superamphiphobic performance. Besides external superamphiphobicity, the cross section of sample also exhibited great liquid-repellency with WCA of 160.43° and OCA of 153.43°. Moreover, although cracked into powders with particle size of 0.1 mm, aerogel sample still retained its liquid-repellency with WCA of 122.85° and OCA of 128.01°, respectively. After thermal treatment under 200 ℃ for 2 h, the aerogel sample had WCA of 152.45° and OCA of 135.67°, showing excellent thermal stability. Taking advantage of low thermal conductivity and superamphiphobic properties, superamphiphobic aerogel has potential for fabricating self-cleaning and thermal insulating materials .
研究领域:
材料科学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 96
·93539-93545
·
IF 3.289
Ye Zhu,Hai-Bo Zhang,Lian-Jun Ding,Zheng Chen,Da-Ye Sun,Zhen-Hua Jiang
Perfluorocarbon groups or related compounds are usually used to modify polymer materials because of their low surface energy properties. In this paper, a novel perfluorocarbon-containing compound was synthesized and used as a capping agent for the preparation of perfluorocarbon chain terminated poly(ether sulfone). The regulation of the fluorine content was achieved by controlling the molecular weight. FTIR and 1H NMR spectra were used to confirm the existence of perfluorocarbon terminated groups in the polymer chains. In addition, the ratios of F/C were acquired by integral area calculation from the 1H NMR spectrum. XPS characterization showed that the surface migration phenomenon of fluorine became apparent along with the increase of the F/C ratio. Further testing found that the introduction of perfluorinated end groups into the PES chains had little influence on the polymers' mechanical and thermal performance, by contrast, their surface energy decreased efficiently from approximately 40 mJ m−2 to 16 mJ m−2 with the F/C ratio on the surface increased from 0 to 0.556, which could develop PES as a low surface energy material for industrial applications.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Yuyang Di,Yilei Lu,Xianliang Li,Zhihao Chen,Wenzhong Yang
In this paper, two imidazoline derivatives, N 1 -(2-aminoethyl)- N 2 -(2-((2-(2-heptyl-4,5-dihydro-1 H -imidazol-1-yl)ethyl)amino)ethyl)ethane-1,2-diamine (HEIM) and N 1 -(2-aminoethyl)- N 2 -(2-((2-(2-(perfluoroheptyl)-4,5-dihydro-1 H -imidazol-1-yl)ethyl)amino)ethyl)ethane-1,2-diamine (PFIM), have been used as corrosion inhibitors of carbon steels in 1 M HCl at elevated temperatures. Two inhibitors are confirmed by 1 H NMR, 13 C NMR, high-resolution mass spectra and FT-IR tools. Electrochemical and immersion tests indicate that the PFIM displays a stable protection performance at different temperatures, with an inhibition efficiency value around 95%. Moreover, scanning Electron Microscopy (SEM), energy dispersive X-ray (EDX) analysis, atomic force microscope (AFM) and X-ray photoelectron spectroscopy (XPS) indicates that the PFIM inhibitor film shows high hydrophobicity and stability at 363 K. Theoretical calculations suggest that the adsorption of PFIM is mainly through the bonding of the F of fluorocarbon chain on the Fe surface. This study helps us further explore the inhibition mechanisms of fluorocarbon chain-based imidazoline derivatives at high temperatures.
研究领域:
材料科学
·
电化学
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
Polymer Chemistry
·
2021
·Vol. 12
·期 5
·736-743
·
IF 5.582
Enjie He,Kai Tu,Jiannan Cheng,Huanjun Lu,Lifen Zhang,Zhenping Cheng,Xiulin Zhu
Main-chain liquid crystalline polymers seldom develop into a columnar phase, let alone mesophase transitions between the columnar phase and other phases as the temperature changes. Herein, we present a new series of main-chain liquid crystalline copolymers which consist of strictly alternating rod-like aryl ester core, alkyl chain and perfluoroalkyl segments synthesized by photoinduced step transfer-addition and radical-termination (START) polymerization. The mesophases can be adjusted by changing the length of alkyl chains or perfluoroalkyl segments, which have been fully investigated and simulated in terms of molecular arrangements of molecules. Importantly the resultant liquid crystalline copolymers can present rare reversible phase transitions from a hexagonal columnar phase to a rectangular columnar phase and finally to a smectic phase with temperature increasing.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Jiating Wen,Zhe Sun,Jun Xiang,Haojun Fan,Yi Chen,Jun Yan
A series of fluorinated waterborne polyurethane (FWPU) with various lengths of fluorinated side chains were synthesized by using different fluoro alcohol-terminated isocyanate trimer (F-HDIT) which prepared from hexafluoroisopropanol (HFIP), 2,2,3,3,4,4,5,5-octafluoropentanol (OFP), 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-1-octanol (TFO) and hexamethylene diisocyanate trimer (HDIT). The influences of fluorocarbon chains' length and fluorine content on the properties of FWPU, involving contact angle, surface energy of film and critical surface tension of emulsion were well-investigated in detail. The XPS result showed that the surface atom percentage of fluorine element of film increased from 0.58 for 6FWPU-5 to 28.19 for 13FWPU-20 with the escalation of F-HDIT content and the length of fluorocarbon lateral chain, which results in the water contact angle increment and surface energy reduction of FWPU films. Similarly, along with the increase of F-HDIT content and fluorocarbon side chains' length, the surface tension of FWPU emulsion exhibited a downtrend with the order of 13FWPU-20 (33.4 mNm −1 ) < 8FWPU-20 (36.5 mN·m −1 ) < 6FWPU-20 (36.9 mN·m −1 ) < FWPU-0 (40.0 mN·m −1 ). Besides, the enrichment of fluorocarbon chains can be deduced from AFM 3D morphology. The control sample FWPU-0 showed a relatively smooth surface while FWPU samples exhibited spike-like surface, indicating that the migration of fluorine side chains might increase the surface roughness of FWPU films.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2021
·Vol. 11
·期 4
·395
·
IF 2.881
Shouhua Su,Juan Wang,Chao Li,Jinfeng Yuan,Zhicheng Pan,Mingwang Pan
In the current leather market, waterproof leather occupies a large proportion, where waterproofness has become one of the important standards for leather selection. However, the most advanced fluorine-containing waterproofing agents on the market always have long chains of over eight carbons (C8), whose use has been restricted due to their bioaccumulation and recalcitrance in natural environment. Consequently, creating waterproof materials characterized by their environmentally friendly qualities and high performance is of great significance. Herein, we report a novel strategy for preparation of the fluorinated polyurethanes containing short branched fluorocarbon chains, and apply it in leather waterproofing. Because the fluorine-containing chain segments are enriched on the coating surface, the waterproof agent coating shows good hydrophobicity, low water absorption, high wear resistance and potential photodegradation of performances. Additionally, the water and oil proof performances of the coating are comparable to that of the marketed C8 waterproofing agent. Its solvent-resistant and antifouling performances are also outstanding. Therefore, the coating can meet the property requirements for daily use and has broad application prospects.Keywords:short branched fluorocarbon chain;fluorinated polyurethane (FPU);waterproof coating;leather surface modification
研究领域:
材料科学
·
环境科学
·
皮革化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PAPERS
·
2021
·Vol. 75
·期 10
·5561-5569
·
IF 2.097
Shao Tantan,Gong Yilu,Chen Xiaolong,Chen Lijun
Novel self-crosslinking long fluorocarbon acrylate polymer latex has been successfully prepared by semi-continuous seeded emulsion polymerization with methyl methacrylate(MMA), butyl acrylate (BA), dodecafluoroheptyl methacrylate (DFMA) and hydroxypropyl methacrylate(HPMA) as main monomers, 10-undecylenic acid (10-UA) and diallyl phthalate (DAP) as functional monomers. During the latex polymerization, the monomers were emulsified by the mixed surfactants of nonionic surfactant alcohol ether glycoside (AEG) and anionic surfactant sodium dodecylbenzene sulfonate (SDBS), and initiated by potassium persulfate (KPS). The resultant latex showed excellent properties. The chemical composition of latex was determined with Fourier transform infrared spectrum (FTIR) and the glass transition temperature (Tg) of polymer was detected by differential scanning calorimetry (DSC) and the water repellency of the prepared film was measured by water contact angle measurement (WCA). The reaction conditions were optimized and obtained as follows: the optimal monomer dosage was MMA: BA: DFMA: HPMA = 12.75:12.75:0.9:1.2, the amount of 10-UA and DAP was both 4% of all monomers, the dosage of AEG: SDBS was 5% (1:1) and KPS was 0.5%, respectively. The result indicated that the conversion of the mixed monomers was more than 98% and the coagulation was less than 1% and the resultant latex also had the outstanding appearance and latex performance.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Ya Wang,Ding Tan,Fangying Zheng,Xianbin Sun,Xudong Li,Yilin Zheng,Yuanming Li,Haijun Chen,Yu Gao
Ferrocene, known for its 'sandwich' structure and Fenton catalytic activity for tumor treatment, its two-dimensional (2D) self-assembly has not yet been exploited for therapeutic applications. Perfluorocarbons (PFCs) can carry and transport oxygen to alleviate tumor hypoxia. Nevertheless, designing ferrocene derivatives with PFC chains to alleviate tumor hypoxia and improve cancer treatment remains a challenge. Here, we first synthesized ferrocene derivatives with different PFC chains (nF-Fc, n = 5, 9, 13) by conjugating perfluorocarbonic acids with 2-(ferrocenylethynyl)aniline (Fc). These derivatives were able to self-assemble into 2D nanosheets, with hydrated particle size decreasing as the chain length increased. The chain lengths also influenced the oxygen-carrying capacity, iron release capacity, and glutathione consumption capacity, all of which impacted their ability to alleviate tumor hypoxia, produce intracellular reactive oxygen species, and enhance chemodynamic therapeutic efficacy. Notably, PFC incorporation altered the mechanism of induced cell death. By elucidating the effects of ferrocene derivatives with different PFC chains on the hypoxic tumor microenvironment (TME) and their therapeutic efficacy, this research advances the development of ferrocene-based 2D materials for cancer treatment and offers a novel approach to optimize compound structures better regulation of the hypoxic TME, ultimately improving therapeutic outcomes.
研究领域:
材料科学
·
癌症治疗
·
纳米医学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Yufei Zhang,Ze-Tao Jiang,Yuxia Wang,Huan-Yu Wang,Shihao Hong,WenBo Li,Dong-Sheng Guo,Xinge Zhang
In the context of an increasingly escalating antibiotics crisis, phototherapy has emerged as a promising therapeutic approach due to its inherent advantages, including high selectivity, noninvasiveness, and low drug resistance. Photothermal therapy (PTT) and photodynamic therapy (PDT) are two complementary and promising phototherapies albeit with inherent limitations, noted as the challenges in achieving precise heat confinement and the associated risk of off-target damage for PTT, while the constraints due to the hypoxic microenvironment are prevalent in biofilms faced by PDT. Herein, we have designed a supramolecular nanoformulation that leverages the complexation-induced quenching of guanidinium-modified calix[5]arene grafted with fluorocarbon chains (GC5AF5), the efficient recognition of adenosine triphosphate (ATP), and the oxygen-carrying capacity of the fluorocarbon chain. This intelligent nanoformulation enables the adaptive enhancement of both photothermal therapy (PTT) and photodynamic therapy (PDT), allowing for on-demand switching between the two modalities. Our nanoformulation utilizes ATP released by dead bacteria to accelerate the elimination of biofilms, rendering bacteria unable to resist while minimizing harm to healthy tissues. This research highlights the particular recognition and assembly capabilities of macrocycles, offering a promising strategy for creating potent, combined antibiofilm therapies.
研究领域:
医学
·
药学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LIQUID CRYSTALS
·
2020
·
IF 2.908
Xiaoqing Wu,Baining Ni,Limin Wu,Yongmin Guo,Yi Li,Baozong Li,Yonggang Yang
Eight dichiral compounds containing two lactic acid residues and one perfluorocarbon chain are synthesised. Six of them are liquid crystals with an enantiotropic SmA phase. Two of them are liquid crystals with enantiotropic SmA and SmC* phases. Although (R,R)-3 and (R,R)-4 molecules pack in monolayer structures at the crystalline states, (S,R)-3 and (R,S)-4 molecules pack in bilayer structures at the crystalline states. The optical activity of these compounds is mainly controlled by the chirality of the lactic acid residue near the liquid crystalline core. The dichiral compounds can self-assemble into nanotubes or twisted nanoribbons in methanol. Circular dichroism characterisation indicated that the stacking handedness of the liquid crystalline cores in the organic self-assemblies was also dominated by the chirality of the lactic acid residue near the liquid crystalline core.
研究领域:
材料科学
·
化学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）