在石墨烯氧化物表面上植入光色螺旋聚合物刷 通过 通过表面启动的环开放转化聚合
BangSen Li1,2,3, Wenya Zhu1,2,3, Jinrui Liu1,2,3
1Collage of Chemistry and Chemical Engineering, Hainan Normal University Haikou 571158 China zaifengshi@163.com stone0801@163.com.
RSC advances
|January 26, 2024
概括
研究人员使用表面启动的环开放转化聚合 (SI-ROMP) 开发了在石墨烯氧化物 (GO) 上使用螺旋的光色聚合物刷. 这提高了GO的溶解性,并产生了强大的光色材料.
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
- 纳米技术 纳米技术
背景情况:
- 氧化石墨烯 (GO) 是一种多功能纳米材料,在先进的功能材料中具有潜在的应用.
- 光色材料在暴露于光线时改变颜色,为智能应用提供了可能性.
- 开发高效的方法,将GO与光色功能相结合,对于新型材料设计至关重要.
研究的目的:
- 开发一种实用的"接种"策略,用于在GO表面上制造光色聚合物刷子.
- 用螺旋聚合物刷 (GO-SPs) 修改的石墨烯氧化物进行合成和表征.
- 为了研究产生的GO-SP复合材料的光色特性和稳定性.
主要方法:
- 表面启动的环开放元解聚合 (SI-ROMP) 使用在GO上固定的Grubbs II催化剂.
- 与螺旋 (SP) 功能化的诺波伦衍生物的合成.
- GO-SP薄膜的特性,包括可溶性,光色反应和耐疲劳性.
主要成果:
- 在GO表面上成功将螺旋功能化聚合物刷接种在GO表面上.
- 经过修改后,GO在有机溶剂中的可溶性显著提高.
- 显示出出色的光色特性:快速变色 (90s紫外线) 和变色 (360s白光).
- 在黑暗中 (超过2小时) 呈现缓慢色动力学,在六个紫外线/光周期中具有高耐疲劳性.
- 在光循环时,可逆的水接触角度变化为8°.
结论:
- 建立了准备光色聚合物刷修改的GO复合材料的实用和有效策略.
- GO-SP复合材料显示出有希望的光色行为,增强的溶解性和良好的耐用性.
- 这项工作扩大了GO在光色材料和智能表面领域的应用范围.
相关概念视频
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
2.6K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
2.6K
Olefin Metathesis Polymerization: Overview
2.1K
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...
2.1K
Radical Chain-Growth Polymerization: Overview
2.4K
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...
2.4K


