Tuning structural and mechanical properties of two-dimensional molecular crystals: The roles of carbon side chains

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Tuning structural and mechanical properties of two-dimensional molecular crystals: The roles of carbon side chains
	Cun HY; Wang YL; Du SX; Zhang L; Zhang LZ; Yang B; He XB; Wang Y; Zhu XY(朱雪燕); Yuan QZ(袁泉子)
刊名	NANO LETTERS
	2012-03-01
通讯作者邮箱	ylwang@iphy.ac.cn;sxdu@iphy.ac.cn
卷号	12 期号:3 页码:1229-1234
关键词	Two-dimensional molecular crystal molecular side chain elastic properties self-assembly scanning tunneling microscopy Quinacridone Derivatives Surfaces Electronics Networks Solids
ISSN号	1530-6984
通讯作者	Wang, YL ; Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
产权排序	[Cun, Huanyao;Wang, Yeliang; Du, Shixuan; Zhang, Lei; Zhang, Lizhi; Yang, Bing; He, Xiaobo; Gao, Hong-jun] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; [Wang, Yue] Jilin Univ, Key Lab Supramol Struct & Mat, Changchun 130023, Peoples R China; [Zhu, Xueyan; Yuan, Quanzi; Zhao, Ya-Pu] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; [Ouyang, Min] Univ Maryland, Dept Phys, College Pk, MD 20742 USA; [Hofer, Werner A.] Univ Liverpool, Stephenson Inst Renewable Energy, Liverpool L69 3BX, Merseyside, England; [Pennycook, Stephen J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
合作状况	国际
中文摘要	A key requirement for the future applicability of molecular electronics devices is a resilience of their properties to mechanical deformation. At present, however, there is no fundamental understanding of the origins of mechanical properties of molecular films. Here we use quinacridone, which possesses flexible carbon side chains, as a model molecular system to address this issue. Eight molecular configurations with different molecular coverage are identified by scanning tunneling microscopy. Theoretical calculations reveal quantitatively the roles of different molecule-molecule and molecule-substrate interactions and predict the observed sequence of configurations. Remarkably, we find that a single Young's modulus applies for all configurations, the magnitude of which is controlled by side chain length, suggesting a versatile avenue for tuning not only the physical and chemical properties of molecular films but also their elastic properties.
学科主题	新型材料的力学问题
分类号	一类
收录类别	SCI ; EI
资助信息	The authors thank L. Bartels and K-H. Ernst for fruitful discussions. This works supported by NSFC, MOST, CAS, and SSC in China. M.O. acknowledges support from U.S. National Science Foundation (Career Award). W.A.H. thanks the Royal Society London for support. S.J.P. was supported by the U.S. Dept. of Energy, Office of Science, Materials Sciences and Engineering Division.
原文出处	http://dx.doi.org/10.1021/nl203591t
语种	英语
WOS记录号	WOS:000301406800019
公开日期	2013-01-18
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46723]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Cun HY,Wang YL,Du SX,et al. Tuning structural and mechanical properties of two-dimensional molecular crystals: The roles of carbon side chains[J]. NANO LETTERS,2012,12(3):1229-1234.
APA	Cun HY.,Wang YL.,Du SX.,Zhang L.,Zhang LZ.,...&Gao HJ.(2012).Tuning structural and mechanical properties of two-dimensional molecular crystals: The roles of carbon side chains.NANO LETTERS,12(3),1229-1234.
MLA	Cun HY,et al."Tuning structural and mechanical properties of two-dimensional molecular crystals: The roles of carbon side chains".NANO LETTERS 12.3(2012):1229-1234.