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Exploring the Effect of Surface Functionality on the Self‐Assembly of Polyoxopalladate Macroions
Author(s) -
Haso Fadi,
Yang Peng,
Gao Yunyi,
Yin Panchao,
Li Hui,
Li Tao,
Kortz Ulrich,
Liu Tianbo
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201500810
Subject(s) - polarity (international relations) , chemistry , attraction , solvent , solvent polarity , crystallography , stereochemistry , organic chemistry , biochemistry , philosophy , linguistics , cell
The solution behavior of the two polyoxo‐13‐palladates(II) ([Pd II 13 As V 8 O 34 (OH) 6 ] 8− and [Pd II 13 (As V Ph) 8 O 32 ] 6− ) was studied in detail. We discovered that the countercation‐mediated attraction is the driving force for their self‐assembly into larger architectures. However, the presence of phenyl groups in the periphery of [Pd II 13 (As V Ph) 8 O 32 ] 6− results in an enhanced attraction among these polyanions through hydrophobic interactions, which leads to completely different trends of assembly size for these two very similar clusters when decreasing solvent polarity. An increase of assembly size with increasing solvent polarity was observed for [Pd II 13 (As V Ph) 8 O 32 ] 6− , whereas for [Pd II 13 As V 8 O 34 (OH) 6 ] 8− it was the opposite, due to the absence of hydrophobic interactions.