三维同体体有机框架与内在体体
Xing Kang1, Cheng Cheng1, Xu Chen1
1School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
Journal of the American Chemical Society
|March 14, 2024
概括
研究人员开发了新的3D共价有机框架 (COF),集成了分子性,螺旋性和内在性拓. 这些性多孔材料在催化中显示出增强的反选择性.
科学领域:
- 材料科学
- 有机化学
- 催化剂
背景情况:
- 嵌合体多孔框架材料是有价值的,但很少结合分子嵌合体,螺旋性和3D内在嵌合体拓.
- 这种结合的特征对于材料中高效的性转移和放大至关重要.
研究的目的:
- 合成具有内在性QZD拓的新型3D共价有机框架 (COF).
- 研究这些COF中的同体和同螺旋特征的整合.
- 在不对称反应中探索这些性COF的催化应用.
主要方法:
- 通过porphyrin tetraamines和enantiopure diene dialdehydes的imine凝结合成两个同结构的3DCOF.
- COF 结构的特征,包括非透的 qzd 拓和螺旋式烯排列.
- 用Rh{I}进行后合成化,以产生异质催化剂 (CCOF 23).
主要成果:
- 成功合成了第一两种具有内在性QZD拓和整合同性/同螺旋性质的3DCOF.
- 这种V形连接器的几何和灵活性决定了氨酸的排列,形成了螺旋结构.
- 在不对称的迈克尔添加中,金属化COF (CCOF 23) 显示出高的反选择性,由于螺旋通道有限,其性能优于同质催化剂.
结论:
- 这项工作介绍了一种具有独特拓和螺旋特征的新型多合体3DCOF.
- 这些发现为产生和控制固态螺旋性,同质性和反选择性提供了洞察力.
- 这些材料有望在不对称催化和性识别中得到先进的应用.
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