通过基于的新型光启动器介导的表面启动聚合物
Matthias Müller1, Manfred Drusgala2, Roland C Fischer2
1Montanuniversität Leoben, Institute of Chemistry of Polymeric Materials, Otto-Glöckel-Strasse 2, A-8700 Leoben, Austria.
ACS applied materials & interfaces
|June 23, 2023
概括
研究人员开发了一种基于的新型光启动器,用于表面启动的光聚合. 这使得多功能表面修改成为可能,创造了具有可调节性质的功能性表面,如水友性和光.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 表面科学是一门学科.
背景情况:
- 表面启动的光聚合对于先进的材料功能化至关重要.
- 联光启动器可以实现各种表面特性,如可湿性和药物传递.
- 现有的光启动器具有局限性,推动了对新型化合物的搜索.
研究的目的:
- 为了合成和描述一种新的基于的光发起器.
- 为了证明这个光启动器在表面上的固定.
- 利用光启动器进行可见光触发的表面启动聚合,并创建功能性表面.
主要方法:
- 三 (二,四,六三甲基醇) 德国的合成.
- 固定在晶片和石英板上,通过X射线光电子光谱学 (XPS) 证实.
- 使用可见光,对功能性单体 (烯胺, perfluorodecyl 烯酸盐,光素-o-烯酸盐) 的表面启动聚合.
主要成果:
- 在良好的产量中成功合成了基于的新型光启动器.
- 通过XPS确认了光启动器在晶片和石英表面的固定.
- 通过受控聚合,创造具有可调节的水友性/性和光性质的表面.
- 使用接触角度,光谱学,圆测量和XPS的聚合物层 (10-126nm厚度) 的表征.
结论:
- 这种基于的新型光发起器对可见光触发的表面启动光聚合是有效的.
- 这种方法可以创建具有量身定制属性的精确功能化的表面.
- 开发的技术为材料科学中先进的表面工程提供了一个多功能平台.
更多相关视频
06:57Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
Published on: July 17, 2020
2.3K
12:38Soft Lithographic Functionalization and Patterning Oxide-free Silicon and Germanium
Published on: December 16, 2011
14.8K
相关概念视频
01:17Ziegler–Natta Chain-Growth Polymerization: Overview
3.4K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.4K
00:57Cationic Chain-Growth Polymerization: Mechanism
2.4K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
2.4K
01:04Anionic Chain-Growth Polymerization: Mechanism
2.1K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
2.1K
01:09Radical Chain-Growth Polymerization: Mechanism
2.6K
The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization initiates when a free radical generated from the radical initiator adds to the unsaturated bond in the monomer. The unpaired electron of the free radical and one π electron in the unsaturated bond creates a σ bond between the free radical and the monomer. As a result, the other π electron in the unsaturated bond converts this...
2.6K
01:20Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K
01:10Radical Chain-Growth Polymerization: Overview
2.5K
Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the reaction proceeds via a free-radical intermediate. The free radical is formed from radical initiators, which spontaneously generate free radicals by homolytic fission. Organic peroxides (such as dibenzoyl peroxide, as shown in Figure 1) or azo compounds are popular radical initiators. A low concentration ratio of radical initiator to monomer is...
2.5K