RSC Advances
·
2018
·Vol. 8
·期 20
·11036-11042
·
IF 2.936
Gang Wang,Jiehua Zhu,Xiaofeng Chen,Hua Dong,Qingtao Li,Lei Zeng,Xiaodong Cao
In recent years medical devices manufacturers have been looking for antimicrobial coatings which are biocompatible and non-toxic for a wide range of medical devices. The demand for these antimicrobial coatings has increased significantly, owing to the increased incidence of hospital-associated infections (HAIs). Hydrogels have been widely used in biomedical applications due to their hydrophilicity, biodegradability, non-toxicity and biocompatibility. In this work, sodium alginate (SA) based antibacterial hydrogels SA/PEG–HHC10 were designed and prepared by combining Diels–Alder (DA) click chemistry and the thiol–ene reaction. The hydrogels were first prepared using DA click chemistry with good mechanical strength, then the cysteine-terminated antimicrobial peptide HHC10–CYS (HHC10) was grafted into the hydrogel by the thiol–ene reaction between the oxy-norbornene group and the thiol group. The results showed that the antimicrobial hydrogels had a strong antibacterial property and good biocompatibility. Therefore, the antimicrobial hydrogels have significant potential application as coatings for implantable medical devices.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ORGANOMETALLIC CHEMISTRY
·
2015
·
IF 2.173
Lei Xue,Liguo Li,Shengyu Feng,Hongzhi Liu
Starting from octavinylsilsesquioxane (OVS), several multifunctional cage silsesquioxanes were successfully prepared by the photo–induced thiol–ene reaction with the corresponding commercially available thiols. These cage compounds were fully characterized by FTIR , NMR, ESI–MS and element analysis .
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2021
·Vol. 17
·期 34
·2101048
·
IF 13.281
Junning Zhang,Haibo Ding,Xiaojiang Liu,Hongcheng Gu,Mengxiao Wei,Xiaoran Li,Shengnan Liu,Sen Li,Xin Du,Zhongze Gu
Two-photon lithography (TPL) is a powerful tool to construct small-scale objects with complex and precise 3D architectures. While the limited selection of chemical functionalities on the printed structures has restricted the application of this method in fabricating functional objects and devices, this study presents a facile, efficient, and extensively applicable method to functionalize the surfaces of the objects printed by TPL. TPL-printed objects, regardless of their compositions, can be efficiently functionalized by combining trichlorovinylsilane treatment and thiol–ene chemistry. Various functionalities can be introduced on the printed objects, without affecting their micro-nano topographies. Hence, microstructures with diverse functions can be generated using non-functional photoresists. Compared to existed strategies, this method is fast, highly efficient, and non photoresist-dependent. In addition, this method can be applied to various materials, such as metals, metal oxides, and plastics that can be potentially utilized in TPL or other 3D printing technologies. The applications of this method on the biofunctionalization of microrobots and cell scaffolds are also demonstrated.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2013
·
IF 2.562
Lei Xue,Dengxu Wang,Zhizhou Yang,Yan Liang,Jie Zhang,Shengyu Feng
Polysiloxanes are unique hybrid inorganic and semi-inorganic polymers that have a wide range of applications in industries. In this study, we report a facile and efficient approach to prepare functional polysiloxanes via thiol–ene reaction. The functional polysiloxanes were characterized and confirmed by 1 H NMR, 13 C NMR, FT-IR, GPC, TGA and DSC. Influence of thiol and vinyl structure over reaction rate was analyzed. The proportion of α- and β-addition product was also determined by 1 H NMR. GPC analysis showed that the molecular-weight distribution of polysiloxanes cannot be disturbed in thiol–ene reaction.
研究领域:
材料科学
·
有机化学
✓ 已验证
产品关联
DOI
高影响因子
Polymer Chemistry
·
2014
·Vol. 6
·期 9
·1527-1532
·
IF 5.368
Lei Yu,Long-Hai Wang,Zong-Tao Hu,Ye-Zi You,De-Cheng Wu,Chun-Yan Hong
Sequential Michael addition-based thiol–ene and free radical mediated thiol–ene reactions for preparing sequence-ordered polymers are reported for the first time. The thiols are produced in situ via the ring-opening of thiolactones, and they can readily react with the electron-deficient carbon–carbon double bond of allyl methacrylate via Michael addition-based thiol–ene, but they are unable to react with the electron-rich carbon–carbon double bond of allyl methacrylate without radicals, and intermediates with thiol and alkene units are formed. After the Michael addition thiol–ene and ring-opening reactions are complete, the thiol is activated by UV irradiation, enabling reaction with the electron-rich carbon–carbon double bond via a free radical-mediated thiol–ene reaction, to form sequence-ordered polymers of high molecular weights.
研究领域:
高分子化学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Coatings Technology and Research
·
2025
·
IF 2.8
Su Xinyong,Wang Jinwei,Zheng Caiyuan,Tang Can,Li Xueguo
Fast UV-curable coatings were prepared through thiol-ene reaction in 10 s, and their waterproof performance was evaluated in different aqueous conditions. The FTIR spectra showed that UV polybutadiene (PB) coatings could be successfully prepared by using mercaptan pentaerythritol tetra (3-mercapto propionate) (PETMP) as the crosslinking agent reacting with maleic anhydride-grafted polybutadiene under photo initiator. Their gel content increased from about 78–92% with the addition of PETMP from 10% to 20%, and then, this increment was less than 2% with the addition of PETMP from 20% to 30%. Their water absorption rate decreased from about 7%–4% with the addition of PETMP up to 20%−25% after 240 h immersion in DI water. The coating containing 25% PETMP demonstrated a significant cleanliness relative to that of plywood and the other coatings as observed from the stain flushing test. The EIS impedance after 96 h immersion revealed a great enhancement in corrosion resistance with the addition of PETMP at about 20%–25%, while the decline in impedance for the coating with 30% PETMP implied the probable aggregation of excessive PETMP; these were confirmed by the semi-immersion test in which the sample containing 20% PETMP exhibited much better salt water resistance than that of the other samples after 168 h immersion in 3.5% NaCl solution. An appropriate addition of PETMP at around 20%–25% resulted in a high crosslinking degree that enhanced waterproof performances of UV-cured PB coatings in DI water, stain water, and salt water. This study provides valuable reference in designing fast UV-curable coatings with good water resistance used as electronic packaging sealants, flexible protective coatings, and so on.
研究领域:
高分子材料科学
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表面与界面化学
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防腐工程
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功能涂层
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光化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2017
·Vol. 4
·期 13
·1700268
·
IF 4.279
Shu Deng,Jianying Huang,Zhong Chen,Yuekun Lai
Superhydrophobic surfaces in nature have attracted a great deal of interest not only for fundamental understanding but also for practical applications through mimicking the nature. Fluorochemicals, due to their intrinsic low surface energy, have been widely applied as artificial superhydrophobic functionalization materials with excellent performance. However, the use of these materials for practical applications might be restricted due to the relative high cost and potential hazards to human health. In this work, a low-cost and environmentally friendly short silane chain material is developed for fabricating superhydrophobic surfaces. A transparent photoactive coating is obtained by polycondensation of trichlorovinylsilane on cotton fabrics. The coating shows excellent superhydrophobicity. After being grafted with vinyl group, the coating can be easily functionalized using a photoclick thiol-ene reaction. The thiol-ene reaction has resulted in highly uniform polymer networks, which makes it possible to realize the rapid wettability switch from superhydrophobic to superhydrophilic state. Such ability makes it potentially viable to prepare well-defined cotton patterning by printing, and realize flexible electronic devices when electrodes are printed on the fabrics.
研究领域:
材料科学
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表面化学
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纺织工程
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2014
·
IF 2.2
Bo Gui,Guiping Hu,Tailin Zhou,Cheng Wang
A porous olefin-functionalized Zr(IV)-based metal–organic framework, denoted as UiO-68-allyl, has been constructed. Our results clearly demonstrated that the surface of UiO-68-allyl could be decorated with organic molecule (ethanethiol) via thiol-ene reaction. More importantly, the crystallinity of the framework were maintained during the post-synthetic modification process. However, the microporosity of the framework is retained but the surface area decreased, due to the grafting of ethylthio groups into the pores. From our studies, we can conclude that the strategy of post-synthetic modification of UiO-68-allyl via thiol-ene reaction may be general. Furthermore, we may anchor other desired functional group onto the pore walls in Zr-MOFs via thiol-ene reaction, enabling more potential applications.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULES
·
2016
·
IF 5.554
Lei Li,Shihui Li,Dongmei Cui
Living polymerization of 3-methylenehepta-1,6-diene (MHD) catalyzed by bis(phosphino)carbazoleide-ligated yttrium alkyl complex afforded a new product bearing pendant terminal vinyl groups with high stereotacticity (cis-1,4-selectivity up to 98.5%), proved by the NMR (1H, 13C, and 1D ROESY) spectroscopic analyses, which demonstrates overwhelmingly favorable chemoselectivity toward conjugated diene over α-olefin moieties. High cis-1,4 random copolymers of MHD and isoprene could also be obtained with pendant vinyl groups ranging from 10% to 90%. These vinyl groups in every chain unit can be cleanly and quantitatively converted into various functionalities via light-mediated thiol–ene reaction, resulting in homo- and copolymers of various functional butadiene derivatives, which display versatile thermal properties.
研究领域:
高分子化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 4
·583
·
IF 3.164
Xiuzhong Zhu,Ting Bai,Zichao Wang,Jie Liu,Xin Min,Tong Wang,Wanbin Zhang,Xiaodong Fan
A series of side-chain functionalized polytetrahydrofuran (PTHF) derivatives were synthesized via the blue-light photocatalytic thiol-ene “click” reaction. Firstly, unsaturated polytetrahydrofuran (UPTHF) as a new unsaturated polyether was synthesized via condensation polymerization of cis-2-butene-1,4-diol and trans-1,4-dibromo-2-butene using potassium hydroxide (KOH) as a catalyst. Then, double bonds in the backbone of UPTHF were modified into different pendant functionality side groups by blue-light photocatalytic thiol-ene “click” reaction using Ru(bpy)3Cl2as a photoredox catalyst, obtaining different side-chain functionalized PTHF derivatives. The structure and the morphology of the side-chain functionalized PTHF derivatives was characterized via Fourier-transform infrared spectra (FTIR), nuclear magnetic resonance (NMR), size exclusion chromatography/multi-angle laser light scattering (SEC/MALLS), and differential scanning calorimeter (DSC). The results showed that the blue-light photocatalytic thiol-ene reaction exhibited high efficiency, and all the unsaturated bonds were modified. Different branch units bestowed different performance of PTHF derivatives; we systematically investigated the thermal properties, pH-triggered and temperature-triggered, self-assembly behaviors of different PTHF derivatives.Keywords:unsaturated polytetrahydrofuran;blue-light photocatalytic thiol-ene reaction;side-chain functionalized polytetrahydrofuran derivatives;backbone-thermoresponsive
研究领域:
材料化学
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高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Jing Fan,Xinyan Fan,Yunfeng Guo,Yonggui Wang,Zefang Xiao,Haigang Wang,Daxin Liang,Yanjun Xie
The surface functionalization of cellulose nanocrystals (CNC) is crucial for promoting their diverse applications, especially regarding their use as sustainable biobased polymer reinforcements. In this study, we develop poly (vinyl alcohol) (PVA)–CNC composites with improved tensile strength and gas-barrier performance using CNC-based nanofillers. Acrylated CNCs (ACNCs) were prepared from cellulose via one-pot acid hydrolysis/Fischer esterification ; subsequently, surface modification was performed through a thiol–ene reaction to obtain surface-thiolated ACNCs, namely, DACNC, MACNC, and PACNC. The various functional groups on the surface-thiolated ACNCs not only affect the dispersion stability but also alter their interfacial interactions with the PVA matrix, thus realizing the PVA nanocomposites with tailored properties, including the thermal properties, mechanical properties, and gas barrier performance. This study demonstrates that surface-thiolated ACNCs with appropriate surface chemistry and loading levels can serve as excellent nanofillers for PVA, forming biobased composites with desired properties.
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER TESTING
·
2021
·
IF 4.282
Lingxiao Ma,Xiuzhong Zhu,Wanbin Zhang,Haitao Zhang,Jianyong Wang,Jianbo Qu
Hydroxy-terminated oligomers with narrow molecular weight distribution using as soft segment of polyurethane can significantly increase the modulus, tensile strength, and elongation at break of the polyurethane. Thus, design and synthesis of new hydroxy-terminated oligomers having narrow molecular weight distribution can improve the properties of polyurethane and further expand the use range of polyurethane. A set of side-chain hydroxyl-terminated polybutadiene (HTPB) derivatives were successfully synthesized by anionic polymerization and blue light photocatalytic thiol-ene reaction. Firstly, HTPB with narrow molecular weight distribution was synthesized via anionic polymerization using mono-lithium based initiator and followed by de-protection. Then, HTPB derivatives with different side-chains such as butyl, ethyl acetate, or myristyl, namely HTPB but , HTPB eac and HTPB tet , were obtained by blue light photocatalytic thiol-ene reaction using Ru(bpy) 3 Cl 2 as photoredox catalyst and HTPB as matrix polymer. Similar with HTPB, those HTPB derivatives also have narrow molecular weight distribution. Polyurethane elastomers (PUs) were synthesized with HTPB or HTPB derivatives as soft segment, toluene diisocynate (TDI) as hard segment, and 1, 4-butanediol as chain extender. Compared study the performances of polymers, the results showed that glass transition temperature ( T g ) and viscosity of HTPB derivatives were increased when short-chain side groups were introduced. But instead, T g and viscosity of HTPB derivatives was reduced following long-chain side groups being grafted. Through comparing research of properties for PUs, tensile strength is reduced and elongation at break is augmented, when side groups were introduced in HTPB backbone. Research on the contact angle tests of PUs indicated that the contact angle of PUs using HTPB, HTPB but or HTPB eac as soft segment, is similar, and PUs using HTPB tet as soft segment has a larger contact angle about 137.2 °C.
研究领域:
高分子科学
·
材料科学
·
化学工程
✓ 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）