A Two-Dimensional Polymer Synthesized through Topochemical [2+2]-Cycloaddition on the Multigram Scale

被引：128

作者：

Lange, Ralph Z. ^{[1
]}

Hofer, Gregor ^{[1
,2
]}

Weber, Thomas ^{[2
]}

Schluter, A. Dieter ^{[1
]}

机构：

[1] ETH, Swiss Fed Inst Technol, Inst Polymers, Vladimir Prelog Weg 5, CH-8093 Zurich, Switzerland

[2] ETH, Swiss Fed Inst Technol, Xray Platform, Dept Mat, Vladimir Prelog Weg 5, CH-8093 Zurich, Switzerland

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2017年 / 139卷 / 05期

关键词：

COVALENT ORGANIC FRAMEWORKS; TRIAZINE-BASED FRAMEWORKS; SINGLE-CRYSTAL PHOTODIMERIZATION; LIQUID-PHASE EXFOLIATION; AIR/WATER INTERFACE; ORGANOMETALLIC SHEETS; COORDINATION POLYMER; BLACK PHOSPHORUS; FORCE MICROSCOPY; ROOM-TEMPERATURE;

D O I：

10.1021/jacs.6b11857

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The single-crystal-to-single-crystal (scsc) synthesis of a 2D polymer based on photochemically triggered [2 + 2]-cyclo addition is reported. Both monomer and polymer single crystals are analyzed by X-ray diffraction, which is the first case of a scsc two-dimensional polymerization based on this cycloaddition and the third ever case for a scsc synthesis of a 2D polymer. The product crystals at quantitative conversion are wet-exfoliated under mild conditions and afford countless features that are single and double layers as judged by their AFM heights of h(AFM) approximate to 1.2 +/- 0.5 and 2.2 +/- 0.5 nm, respectively. The X-ray-structure based molecular weight of the 2D polymers and their degree of polymerization per mu m(2) are M = 360 MDa and P-n = 464 900, respectively. The sheet size is on the order of 5 X 5 mu m(2).

引用

页码：2053 / 2059

页数：7

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