三维共价有机框架的设计合成

Designed synthesis of 3D covalent organic frameworks.

作者信息

El-Kaderi Hani M, Hunt Joseph R, Mendoza-Cortés José L, Côté Adrien P, Taylor Robert E, O'Keeffe Michael, Yaghi Omar M

机构信息

Center for Reticular Chemistry at California NanoSystems Institute, Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA.

出版信息

Science. 2007 Apr 13;316(5822):268-72. doi: 10.1126/science.1139915.

DOI:10.1126/science.1139915

PMID:17431178

Abstract

Three-dimensional covalent organic frameworks (3D COFs) were synthesized by targeting two nets based on triangular and tetrahedral nodes: ctn and bor. The respective 3D COFs were synthesized as crystalline solids by condensation reactions of tetrahedral tetra(4-dihydroxyborylphenyl) methane or tetra(4-dihydroxyborylphenyl)silane and by co-condensation of triangular 2,3,6,7,10,11-hexahydroxytriphenylene. Because these materials are entirely constructed from strong covalent bonds (C-C, C-O, C-B, and B-O), they have high thermal stabilities (400 degrees to 500 degrees C), and they also have high surface areas (3472 and 4210 square meters per gram for COF-102 and COF-103, respectively) and extremely low densities (0.17 grams per cubic centimeter).

摘要

通过以基于三角形和四面体节点的两种网络为目标合成了三维共价有机框架（3D COF）：ctn和bor。通过四面体四（4 - 二羟基硼苯基）甲烷或四（4 - 二羟基硼苯基）硅烷的缩合反应以及三角形2,3,6,7,10,11 - 六羟基三亚苯的共缩合反应，将各自的3D COF合成为结晶固体。由于这些材料完全由强共价键（C - C、C - O、C - B和B - O）构成，它们具有高热稳定性（400摄氏度至500摄氏度），并且还具有高比表面积（COF - 102和COF - 103分别为每克3472和4210平方米）以及极低的密度（每立方厘米0.17克）。