Guest Controlled Assembly of Gold Nanoparticles Coated with Calix[4]arene Hosts

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2010
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Ciesa, Flavio
Mattioli, Cristina
Pescatori, Luca
Arduini, Arturo
Pochini, Andrea
Rossi, Francesca
Secchi, Andrea
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The Journal of Physical Chemistry C. American Chemical Society (ACS). 2010, 114(32), pp. 13601-13607. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp105143p
Zusammenfassung

Gold nanoparticles protected with thiolate Calix[4]arenes hosts were synthesized through an exchange reaction in toluene, starting from tetraoctyl ammonium bromide stabilized gold nanoparticles having a mean core size of ∼6 nm. In low polar solvents, these new Calix[4]arene-coated nanoparticles are able to self-assemble through supramolecular interactions with dialkyl dipyridinium-based guests (2−3). The guest-induced self-assembly process between nanoparticles has been studied using UV−vis spectroscopy, dynamic light scattering, and TEM measurements. The size and the solubility of the aggregates strongly depend on the length and rigidity of the bifunctional guest used as “supramolecular linker” between the nanoparticles. In particular, the long and flexible guest 2 gives rise to superaggregates of nanoparticles that remain soluble in common low polar solvents.

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ISO 690CIESA, Flavio, Anton PLECH, Cristina MATTIOLI, Luca PESCATORI, Arturo ARDUINI, Andrea POCHINI, Francesca ROSSI, Andrea SECCHI, 2010. Guest Controlled Assembly of Gold Nanoparticles Coated with Calix[4]arene Hosts. In: The Journal of Physical Chemistry C. American Chemical Society (ACS). 2010, 114(32), pp. 13601-13607. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp105143p
BibTex
@article{Ciesa2010-08-19Guest-51802,
  year={2010},
  doi={10.1021/jp105143p},
  title={Guest Controlled Assembly of Gold Nanoparticles Coated with Calix[4]arene Hosts},
  number={32},
  volume={114},
  issn={1932-7447},
  journal={The Journal of Physical Chemistry C},
  pages={13601--13607},
  author={Ciesa, Flavio and Plech, Anton and Mattioli, Cristina and Pescatori, Luca and Arduini, Arturo and Pochini, Andrea and Rossi, Francesca and Secchi, Andrea}
}
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