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Ion-Specific Interfacial Crystallization of Polymer-Grafted Nanoparticles

TitleIon-Specific Interfacial Crystallization of Polymer-Grafted Nanoparticles
Publication TypeJournal Article
Year of Publication2017
AuthorsZhang, HH, Wang, WJ, Mallapragada, S, Travesset, A, Vaknin, D
JournalJournal of Physical Chemistry C
Date Published07
Type of ArticleArticle
ISBN Number1932-7447
Accession NumberWOS:000406355700049
Keywords2-phase systems, aqueous biphasic systems, chemistry, dimensions, dna-capped nanoparticles, gold nanoparticles, Materials Science, salt, superlattices, Technology - Other Topics

Whereas for KCl the 2D hexagonal coherence length of the PEG-AuNP superlattices is remarkably large compared to other salts (over micron-sized crystalline grains), NaCl induces coexistence of two hexagonal structures. Using various salts, we find that the value of the lattice constant is correlated to the ionic hydration entropy consistent with the Hofmeister series.

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