Mechanical Properties of a Series of Macro- and Nanodimensional Organic Cocrystals Correlate with Atomic Polarizability
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- 作者：Thilini P. Rupasinghe ; Kristin M. Hutchins ; Bimali S. Bandaranayake ; Suman Ghorai ; Chandana Karunatilake ; Dejan-Kre拧imir Bu膷ar ; Dale C. Swenson ; Mark A. Arnold ; Leonard R. MacGillivray ; Alexei V. Tivanski
- 刊名：Journal of the American Chemical Society
- 出版年：2015
- 出版时间：October 14, 2015
- 年：2015
- 卷：137
- 期：40
- 页码：12768-12771
- 全文大小：387K
- ISSN：1520-5126
文摘
A correlation between Young鈥檚 modulus, as determined by using nanoindentation atomic force microscopy (AFM), and atomic polarizability is observed for members of a series of cocrystals based on systematic changes to one cocrystal component. Time domain spectroscopy over terahertz frequencies (THz-TDS) is used for the first time to directly measure the polarizability of macro- and nanosized organic solids. Cocrystals of both macro- and nanodimensions with highly polarizable atoms result in softer solids and correspondingly higher polarizabilities.