2023年2月13日 · Herein, we report a simple and robust methodology to fabricate large-area, free-standing, and crystalline sp 2 c-COF films (TFPT–TMT and TB–TMT) on various solid substrates (e.g., fluorine-doped tin oxide, aluminum sheet, polyacrylonitrile membrane) by self-assembly monolayer-assisted surface-initiated Schiff-base-mediated aldol ...

2019年7月29日 · Crystalline 2D poly(arylene vinylene) covalent organic frameworks (COFs) have been synthesized by base-catalyzed aldol condensation of trimethyltriazine with a series of aromatic dialdehydes. The resulting COFs are hydrolytically stable and highly fluorescent (quantum yield ≤50 %).

2021年3月31日 · Herein, we reported a green strategy to construct a olefin-linked NKCOF-10 (NKCOF = Nankai covalent organic framework) through benzoic-anhydride-catalyzed Aldol reaction between the activated...

2019年7月24日 · Herein, we report the synthesis of two purely vinylene (−CH=CH−) linked 2D COFs (V-COF-1 and V-COF-2) achieved by base-catalyzed reversible aldol condensation, exploiting the highly electron deficient s-triazine core of 2,4,6-trimethyl-s-triazine (TMT).

2020年7月17日 · Herein, we report the synthesis of a vinylene-linked (−CH═CH−) covalent organic framework, COF-701, directly from acetonitrile, a cheap commodity solvent, by combining/telescoping two consecutive reactions—cyclotrimerization of nitrile and subsequent aldol condensation with aldehydes—in one pot.

2020年7月15日 · In summary, we have designed and synthesized a novel triazine-based fully conjugate COF via Aldol condensation of TFPT and TMT. Two triazine-based precursors are linked by C C bonds to form a highly planarized and conjugated 2D-COF plane and provided this triazine functionalized TTO-COF with high chemical stability even under harsh conditions.

Aldol反应 ，也叫作羟（醇）醛缩合反应。由Charles Adolphe Wurtz（武慈）于1872年发现的一个在有机合成里重要的基础反应。 武慈 法国化学家. 这是一个 烯醇离子 和羰基化合物缩合而形成的一个 β-羟基羰基化合物 的反应。

南开大学 张振杰 研究员 等人 开发了一种绿色合成策略，实现了在无溶剂条件下合成具有高强度、高孔隙率、高结晶度的烯烃连接的吡嗪基共价有机骨架。 其在较宽的相对湿度（10–90％）和温度范围（25–80°C）内显示出0.06 eV的低活化能和超高质子传导率。 以其作为固体电解质的质子交换膜 燃料电池 可达到135 mW cm. 的最大功率和676 mA cm. 的电流密度，这超过了所有报道的COF材料。 该研究以题为“Green synthesis of olefin-linked covalent organic frameworks for …

2019年10月14日 · Two 2D covalent organic frameworks (COFs) linked by vinylene (-CH=CH-) groups (V-COF-1 and V-COF-2) are synthesized by exploiting the electron deficient nature of the aromatic s-triazine unit of C 3 -symmetric 2,4,6-trimethyl-s-triazine (TMT).

关键词: 共价有机框架材料, 多孔有机材料, 碳碳双键, Aldol反应. Abstract: Three new olefin-linked covalent organic frameworks were successfully constructed via Aldol condensation by using 2,4,6-trimethyl-1,3,5-triazine (TMT) with C 3-symmetry and aromatic aldehydes as building units