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Cover Picture: ZAAC ‐ Journal of Inorganic and General Chemistry 16/2016
Author(s) -
Theodor Milek,
Dirk Zahn
Publication year - 2016
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201690013
Subject(s) - cover (algebra) , chemistry , crystallography , nanotechnology , materials science , engineering , mechanical engineering
The cover picture shows a citrate ion associated to a growing (0001¯) surface of zinc oxide. Despite the strong energy gain by electrostatic interactions, intra‐molecular stress prevents binding of all three carboxyl groups to planar surface sketches. While one of the carboxyl groups is dangling into the solvent, only two carboxyl‐Zn contacts (including two salt bridges each) are formed. As a consequence, the surfactant exhibits a “walking” mechanism to move along planar surfaces by exchanging the role of its carboxyl groups. Molecular simulations show citrate surfactants may ‘walk’ along a zinc oxide surface until binding to a step – which needs to be ‘climbed’ upon propagation of the growth front. More details can be found in the article by Theodor Milek and Dirk Zahn on page 902ff.