title: Odd-even effect in the elastic modulii of α,ω-alkanedicarboxylic acids.
abstract: Nanoindentation studies on α,ω-alkanedicarboxylic acids reveal that the elastic modulus, E, shows an odd-even alternation in exactly the same manner as the melting temperature, Tm. These results are consistent with the hypothesis that the strained molecular conformations in the odd diacids are the reasons for these alternations in Tm. The same packing features that lower Tm in the odd acids lead to easy accommodation of the deformation during nanoindentation and hence their low E.
authors.affiliation: Solid State and Structural Chemistry Unit and §Department of Materials Engineering, Indian Institute of Science , Bangalore 560 012, India.
authors.forename: Manish Kumar
authors.initials: MK
authors.lastname: Mishra
authors.forename: Sunil
authors.initials: S
authors.lastname: Varughese
authors.forename: Upadrasta
authors.initials: U
authors.lastname: Ramamurty
authors.forename: Gautam R
authors.initials: GR
authors.lastname: Desiraju
mesh_terms: D000473:Alkanes / Q000737:chemistry*; D003998:Dicarboxylic Acids / Q000737:chemistry*; D008968:Molecular Conformation; D013696:Temperature
chemical_list: D000473:Alkanes; D003998:Dicarboxylic Acids