Covalent Organic Frameworks as a Platform for Multidimensional Polymerization.
Covalent Organic Frameworks as a Platform for Multidimensional Polymerization.
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DOI：
10.1021/acscentsci.7b00127
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发表时间：
2017-06-28
影响因子：
18.2
通讯作者：
Dichtel WR
中科院分区：
文献类型：
--
作者：
Bisbey RP;Dichtel WR
具有定向键设计的单体的同时聚合和结晶提供了共价有机框架（COFs），这是一种具有坚固共价键的周期性聚合物网络，排列在二维或三维拓扑结构中。COFs的特性范围已经迅速扩展到多相催化、储能和光伏器件以及质子导电膜等领域。然而，许多这些应用将要求材料质量、形态控制和合成效率超过当代合成方法的能力。这种水平的控制将来自于对碳纳米管成核和生长过程的基本理解的提高。更强大的结构和缺陷表征，在机械理解的指导下改进合成，以及获取从单晶到薄膜到胶体悬浮液的各种孤立形式，仍然是重要的前沿问题。共价有机框架提供了一种通用的方法，将单体组装成坚固的、多维的聚合物支架。强调了最近的潜在应用，并强调了改进基本理解的必要性。
The simultaneous polymerization and crystallization of monomers featuring directional bonding designs provides covalent organic frameworks (COFs), which are periodic polymer networks with robust covalent bonds arranged in two- or three-dimensional topologies. The range of properties characterized in COFs has rapidly expanded to include those of interest for heterogeneous catalysis, energy storage and photovoltaic devices, and proton-conducting membranes. Yet many of these applications will require materials quality, morphological control, and synthetic efficiency exceeding the capabilities of contemporary synthetic methods. This level of control will emerge from an improved fundamental understanding of COF nucleation and growth processes. More powerful characterization of structure and defects, improved syntheses guided by mechanistic understanding, and accessing diverse isolated forms, ranging from single crystals to thin films to colloidal suspensions, remain important frontier problems. Covalent organic frameworks offer a versatile approach to assemble monomers into robust, multidimensional polymeric scaffolds. Recent potential applications are highlighted, and the need for an improved fundamental understanding is emphasized.