2022年2月2日 · We indeed find that this irreversible polyaramid chemistry enables 2D condensation in solution phase under ambient conditions, producing high yields of an in-plane bonded polymer, that is, a 2D...

2022年2月2日 · Using a novel polymerization process, MIT chemical engineers have created a new material that is stronger than steel and as light as plastic, and can be easily manufactured in large quantities. The new material is a two-dimensional polymer that self-assembles into sheets, unlike all other polymers, which form one-dimensional, spaghetti-like chains.

2022年2月3日 · 最终的反应使用了市售廉价的均苯三甲酰氯和三聚氰胺作为反应原料，在强氢键受体溶剂如nmp中进行，得到的黄色固体粉末被命名为2dpa-1（图3a）。

As materials, our work has shown that 2D polyaramids exist between polymeric materials and 2D inorganic crystalline materials, combining the properties of both, but with a solution-phase synthetic route. 2DPA-1 is a melamine and acyl chloride polycondensation that produces a material that is stronger than steel, is as light as a conventional ...

2022年2月3日 · FTIR和AFM表征证实了酰胺键的形成和高度氢键N-H拉伸，为了阐明其分子维度，作者制备了甲硅烷基化2DPA-1（TMS-2DPA-1）， TMS-2DPA-1产生高比例的具有不同高度和横向尺寸的单分子 （图1c）。 平均分子厚度和直径分别为3.69±0.28Å （图1d） 和10.3±2.8nm （图1e）。 这种单体尺度的厚度被认为是2D聚合的明确标志。 图 1. 二维聚合物材料的合成与表征. 为了实现二维材料的显著应用，它们必须可加工成薄膜和薄膜。 然而，多晶性和不良排列往往 …

2022年4月27日 · Because the material, called 2DPA-1, self-assembles, it’s easy to produce in large quantities. Its elastic modulus—the force it takes to deform a material—is between four and six times greater...

2021年3月25日 · Herein we demonstrate a synthetic route to 2D irreversible polycondensation directly in the solution phase, resulting in covalently bonded 2D polymer platelets that are chemically stable and highly...

We indeed find that this irreversible 2D polyaramid chemistry enables the monomers to condense in the solution phase under ambient and neutral conditions producing high yields of in-plane bonded 2D polymers, termed 2DPA-1 (Fig. 1a).

2022年2月21日 · MIT chemical engineers have invented a new type of plastic that is twice as strong as steel. How does it work? Dubbed 2DPA-1, the material is light and mouldable like plastic but has a strength and resistance that the researchers behind the project liken to steel and bulletproof glass.

2022年2月3日 · The scientists found that the elastic modulus of 2DPA-1 — a measure of how much force it takes to deform a material — is between four and six times greater than that of bulletproof glass. They also found that its yield strength, or how much force it takes to break the material, is twice that of steel, even though the material has only about ...