Odd鈥揈ven Effect in the Elastic Modulii of 伪,蠅-Alkanedicarboxylic Acids

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• 作者：Manish Kumar Mishra ; Sunil Varughese ; Upadrasta Ramamurty ; Gautam R. Desiraju
• 刊名：The Journal of the American Chemical Society
• 出版年：2013
• 出版时间：June 5, 2013
• 年：2013
• 卷：135
• 期：22
• 页码：8121-8124
• 全文大小：268K
• 年卷期：v.135,no.22(June 5, 2013)
• ISSN：1520-5126

文摘

Nanoindentation studies on 伪,蠅-alkanedicarboxylic acids reveal that the elastic modulus, E, shows an odd鈥揺ven alternation in exactly the same manner as the melting temperature, T_m. These results are consistent with the hypothesis that the strained molecular conformations in the odd diacids are the reasons for these alternations in T_m. The same packing features that lower T_m in the odd acids lead to easy accommodation of the deformation during nanoindentation and hence their low E.