与乙烯光聚合物和3D打印相对应的norbornene组成-to-reactivity
Yutong Liu1, Henry L Cater1, Elizabeth A Recker2
1Department of Chemistry, The University of Texas at Austin, Austin, TX, USA. zpage@utexas.edu.
概括
这项研究揭示了norbornene衍生物的结构-反应性关系,用于乙烯反应. 这些发现使生物模拟水凝的3D打印使用聚乙烯胺和数字光处理成为可能.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
背景情况:
- 乙烯反应是用于聚合物合成和改造的多功能点击化学工具.
- 诺波伦烯衍生物在基质介导的聚合物中提供独特的反应性.
- 水凝的3D打印对于为组织工程和药物输送创造复杂的仿生结构至关重要.
研究的目的:
- 为了阐明norbornene衍生物在光启动的烯反应中的结构-反应性关系.
- 用特定的诺波烯衍生物来功能化聚N-基乙烯胺.
- 利用这些功能化聚合物在数字光处理 (DLP) 3D打印中用于仿生水凝制造.
主要方法:
- 实时里埃变换红外光谱法 (FTIR) 用于监测反应动力学.
- 合成和表征各种诺伯烯衍生物.
- 聚乙烯 (N-基乙烯胺) 的功能化与exo-norborneneimide.
- 数字光处理 (DLP) 3D打印水凝.
主要成果:
- 确立了在乙烯点击化学中对诺波烯衍生物的明确结构-反应相关性.
- 成功合成了聚乙烯 (N-基乙烯胺) 功能化与外-norborneneimide.
- 证明了使用这些功能化聚合物用于DLP3D水凝打印的可行性.
结论:
- 这项研究为控制的聚合物网络形成的norbornene衍生物反应性提供了基本的见解.
- 开发的功能化聚合物适用于先进的3D打印应用.
- 这项工作有助于为潜在的生物医学应用创造复杂的仿生水凝.
相关概念视频
Radical Substitution: Allylic Bromination
4.9K
In organic synthesis, the formation of products can be altered by changing the reaction conditions. For example, a dibromo addition product is formed when propene is treated with bromine at room temperature. In contrast, propene undergoes allylic substitution in non-polar solvents at high temperatures to give 3-bromopropene. In order to avoid the addition reaction, the bromine concentration must be kept as low as possible throughout the reaction. This can be achieved using N-bromosuccinimide...
4.9K
Olefin Metathesis Polymerization: Overview
2.0K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
2.0K
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
1.9K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
1.9K
Preparation and Reactions of Sulfides
4.7K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.7K
Thermal and Photochemical Electrocyclic Reactions: Overview
2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Diels–Alder Reaction: Characteristics of Dienes
4.0K
The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is...
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is...
4.0K


