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Gavara, RaquelAuthor

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November 12, 2021
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Supramolecular tripodal Au(i) assemblies in water. Interactions with a pyrene fluorescent probe

Publicated to: NEW JOURNAL OF CHEMISTRY. 43 (21): 8279-8289 - 2019-06-07 43(21), DOI: 10.1039/c9nj00469f

Authors: Pinto, Andrea; Hernandez, Guillem; Gavara, Raquel; Aguilo, Elisabet; Moro, Artur J; Aullon, Gabriel; Malfois, Marc; Lima, Joao Carlos; Rodriguez, Laura

Affiliations

ALBA Synchrotron Light Lab CELLS, Carrer Llum 2-26, Barcelona 08290, Spain - Author
Univ Barcelona, Inst Nanociencia & Nanotecnol IN2UB, E-08028 Barcelona, Spain - Author
Univ Barcelona, Secc Quim Inorgan, Dept Quim Inorgan & Organ, Marti & Franques 1-11, E-08028 Barcelona, Spain - Author
Univ Nova Lisboa, Dept Quim, LAQV REQUIMTE, Monte De Caparica, Portugal - Author
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Abstract

The synthesis of three gold(i) tripodal complexes derived from tripropargylamine and containing the water soluble phosphines PTA (1,3,5-triaza-7-phosphaadamantane), DAPTA (3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane) and TPPTS (triphenylphosfine-3,3,3-trisulfonic acid trisodium salt) is described here. The three complexes are observed to give rise to the formation of supramolecular aggregates in water and very long fibers. This property has been analyzed by means of H-1-NMR spectroscopy at different concentrations and SAXS. The results point out the important role of the phosphine moieties as the main enthalpic or entropic contribution in the resulting Gibbs energy of aggregate formation. The tripodal structure of the three complexes together with the presence of gold(i) atoms makes them ideal candidates to interact with hydrophobic molecules also in water. For this, the interaction with pyrene in this solvent has been evaluated with successful results in all three complexes. The highest association constant corresponds to 2 as the host. DFT studies indicate the location of pyrene in the tripodal cavity as the most stable conformation. The interaction with pyrene has been additionally studied within cholate hydrogel matrixes pointing out the stability of the resulting host:guest adducts in different media.

Keywords

ComplexesEfficientEmissionEncapsulationGelationGoldMetallogelatorsMoleculesX-ray-scattering

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal NEW JOURNAL OF CHEMISTRY due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2019, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Chemistry.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-12-05:

  • WoS: 13

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-12-05:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 19 (PlumX).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Portugal.

Awards linked to the item

The authors are grateful to the Ministry of Economy, Industry and Competitiveness of Spain (AEI/FEDER, UE Project CTQ2016-76120-P). This work was also supported by the Associated Laboratory for Sustainable Chemistry, Clean Processes and Technologies, LAQV, which is financed by national funds from FCT/MEC (UID/QUI/50006/2013) and co-financed by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265). This research was supported by a Marie Curie Intra European Fellowship within the 7th European Community Framework Programme (R. G.). A. M. thanks FCT for a post-doctoral grant (SFRH/BPD/69210/2010). SAXS experiments were performed at the NCD-SWEET beamline of the ALBA Synchrotron Light Facility in collaboration with the ALBA staff. Allocation of computer facilities at IQTCUB is also acknowledged, supported by the Maria de Maeztu program (MDM-2017-0767).