Harder than diamond: determining the cross-sectional area and young's modulus of molecular rods

被引：44

作者：

Itzhaki, L

Altus, E

Basch, H

Hoz, S ^{[1
]}

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

[2] Technion Israel Inst Technol, IL-32000 Haifa, Israel

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2005年 / 44卷 / 45期

关键词：

ab initio calculations; materials science; mechanical properties; nanostructures; polyynes;

D O I：

10.1002/anie.200502448

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) Hard and straight: Diamond is the hardest material known, yet polyyne - a molecular rod comprised of C≡C units - resists longitudinal compression with a Young's Modulus 40 times larger than diamond, whereas [n]staffanes have a Young's Modulus close to that of diamond. Mechanical engineering provides the connection between the point at which a rod buckles under longitudinal load and its cross-sectional area. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：7432 / 7435

页数：4

共 18 条

[11] Structures and stabilities of diacetylene-expanded polyhedranes by quantum mechanics and molecular mechanics [J].