Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/128187
Title: Tuning supramolecular aurophilic structures: the effect of counterion, positive charge and solvent
Author: Aguiló Linares, Elisabet
Gavara, Raquel
Baucells, Clara
Guitart, Marta
Lima, João Carlos
Llorca, Jordi, 1966-
Rodríguez, Laura
Keywords: Topologia
Compostos d'or
Química supramolecular
Luminescència
Topology
Gold compounds
Supramolecular chemistry
Luminescence
Issue Date: 14-Mar-2016
Publisher: Royal Society of Chemistry
Abstract: The synthesis of the cationic gold(I) complexes [Au(C≡CC5H4N)(CH3-PTA)]X (X = I, 1; X = OTf, 4), [Au(C≡CC5H4N-CH3)(PTA)]X (X = I, 2; X = OTf = 5; PTA = 1,3,5-triaza-7-phosphatricyclo[3.3.1.13.7]decane) and [Au(C≡CC5H4N-CH3)(DAPTA)]X (X = I, 3; X = OTf = 6, DAPTA = 3,7-diacetyl-1,3,7-triaza-5- phosphabicyclo[3.3.1]nonane) gives cationic complexes showing unexpected supramolecular assemblies in water going from rod-like structures (1) to vesicles (2 and 3) and square-like structures (5 and 6). These morphologies are completely different from the fibers previously obtained with their parent neutral complexes [Au(C≡C5H4N)(PTA)] and [Au(C≡C5H4N)(DAPTA)]. Nevertheless, the introduction of triflate as counterion in 1 (complex 4) gives rise to the formation of highly soluble complex in water which does not display any significant aggregation in solution. These results reveal the importance of the introduction of a positive charge on the global supramolecular assemblies and how the counterion can modify also the resulting package. Interestingly, we have also proved that the aggregation of complexes 2, 3, 5 and 6 is also affected by the solvent with direct influence on their absorption and emission properties and the global morphology of the aggregates.
Note: Versió postprint del document publicat a: https://doi.org/10.1039/c6dt00865h
It is part of: Dalton Transactions, 2016, vol. 45, num. 17, p. 7328-7339
Related resource: https://doi.org/10.1039/c6dt00865h
URI: http://hdl.handle.net/2445/128187
ISSN: 1477-9226
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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