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Inorganics
Special Issues
Gold Complexes
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Gold Complexes

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Organometallic Chemistry".

Deadline for manuscript submissions: closed (15 January 2021) | Viewed by 15042

Special Issue Editors

Prof. Dr. Laura Rodríguez

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Guest Editor
Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
Interests: supramolecular chemistry; luminescence; gold; platinum; organometallic
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. João Carlos Lima

E-Mail Website
Guest Editor
LAQV-REQUIMTE, Departamento de Química, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal
Interests: photochemistry; photophysics; gold; supramolecular chemistry; biosensors

Special Issue Information

Dear Colleagues,

During the last two decades, the chemistry of mono- and polynuclear gold(I) complexes has attracted increasing attention. In particular, growing attention on their photophysical properties has been observed due to their potential applications in a wide variety of different research fields, such as photonic devices, nanomaterials, photoenergy storage, nonlinear optical responsive systems, and biological active species.

The strong relativistic effects possessed by gold make it unique and are in the basis of the observation of weak aurophilic interactions between gold centers, which have attracted a growing attention and accelerated the development of gold(I) chemistry.

Because of a similarity of magnitude between aurophilic interactions and hydrogen bonds, aurophilicity plays a key role in molecular aggregation in both solid state and solution. Solid-state aggregations are well established based on X-ray crystal structures, but solution studies are scarce and have been more recently observed to be growing in interest.

This Special Issue is focused on trying to highlight the wide range of applications of gold(I) complexes, mainly within organometallic chemistry. This will also serve as a way of opening up new strategies and collaborations between researchers in the field.  

Prof. Dr. Laura Rodríguez
Prof. Dr. João Carlos Lima
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Inorganics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • gold
  • luminescence
  • supramolecular
  • photoenergy storage
  • biological applications

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Published Papers (4 papers)

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Research

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15 pages, 2802 KiB  
Article
Fluorination Effects in XPhos Gold(I) Fluorothiolates
by Guillermo Moreno-Alcántar, Cristian Díaz-Rosas, Alberto Fernández-Alarcón, Luis Turcio-García, Marcos Flores-Álamo, Tomás Rocha-Rinza and Hugo Torrens
Inorganics 2021, 9(2), 14; https://doi.org/10.3390/inorganics9020014 - 2 Feb 2021
Cited by 2 | Viewed by 2754
Abstract
Gold phosphine derivatives such as thiolates have been recently proposed as catalysts or catalyst precursors. The relevance of the supramolecular environment on the fine-tuning of the catalytical activity on these compounds incentivizes the use of tools that are convenient to characterize in detail [...] Read more.
Gold phosphine derivatives such as thiolates have been recently proposed as catalysts or catalyst precursors. The relevance of the supramolecular environment on the fine-tuning of the catalytical activity on these compounds incentivizes the use of tools that are convenient to characterize in detail the non-covalent landscape of the systems. Herein, we show the molecular and supramolecular diversity caused by the changes in the fluorination pattern in a family of new XPhos goldfluorothiolate derivatives. Furthermore, we studied the supramolecular interactions around the Au centers using quantum chemical topology tools, in particular the quantum theory of atoms in molecules (QTAIM) and the non-covalent interaction index. Our results give detailed insights into the fluorination effects on the strength of intramolecular and intermolecular interactions in these systems. We have also used QTAIM delocalization indexes to define a novel hapticity indicator. Finally, we assessed the trans influence of the fluorothiolates on the phosphine in terms of the change in the δ 31P-NMR. These results show the feasibility of the use of fluorination in the modulation of the electronic properties of Buchwald phosphine gold(I) compounds, and thereby its potential catalytic activity. Full article
(This article belongs to the Special Issue Gold Complexes)
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11 pages, 1778 KiB  
Article
The Ca2+-ATPase Inhibition Potential of Gold(I, III) Compounds
by Custódia Fonseca, Gil Fraqueza, Sónia A. C. Carabineiro and Manuel Aureliano
Inorganics 2020, 8(9), 49; https://doi.org/10.3390/inorganics8090049 - 30 Aug 2020
Cited by 7 | Viewed by 3005
Abstract
The therapeutic applications of gold are well-known for many centuries. The most used gold compounds contain Au(I). Herein, we report, for the first time, the ability of four Au(I) and Au(III) complexes, namely dichloro (2-pyridinecarboxylate) Au(III) (abbreviated as 1), chlorotrimethylphosphine Au(I) ( [...] Read more.
The therapeutic applications of gold are well-known for many centuries. The most used gold compounds contain Au(I). Herein, we report, for the first time, the ability of four Au(I) and Au(III) complexes, namely dichloro (2-pyridinecarboxylate) Au(III) (abbreviated as 1), chlorotrimethylphosphine Au(I) (2), 1,3-bis(2,6-diisopropylphenyl) imidazole-2-ylidene Au(I) chloride (3), and chlorotriphenylphosphine Au(I) (4), to affect the sarcoplasmic reticulum (SR) Ca2+-ATPase activity. The tested gold compounds strongly inhibit the Ca2+-ATPase activity with different effects, being Au(I) compounds 2 and 4 the strongest, with half maximal inhibitory concentration (IC50) values of 0.8 and 0.9 µM, respectively. For Au(III) compound 1 and Au(I) compound 3, higher IC50 values are found (4.5 µM and 16.3 µM, respectively). The type of enzymatic inhibition is also different, with gold compounds 1 and 2 showing a non-competitive inhibition regarding the native substrate MgATP, whereas for Au compounds 3 and 4, a mixed type of inhibition is observed. Our data reveal, for the first time, Au(I) compounds with powerful inhibitory capacity towards SR Ca2+ATPase function. These results also show, unprecedently, that Au (III) and Au(I) compounds can act as P-type ATPase inhibitors, unveiling a potential application of these complexes. Full article
(This article belongs to the Special Issue Gold Complexes)
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Review

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36 pages, 43130 KiB  
Review
Recent Progress on Supramolecular Luminescent Assemblies Based on Aurophilic Interactions in Solution
by Guillermo Romo-Islas and Raquel Gavara
Inorganics 2021, 9(5), 32; https://doi.org/10.3390/inorganics9050032 - 22 Apr 2021
Cited by 6 | Viewed by 3448
Abstract
The development of supramolecular systems showing aurophilic interactions in solution is gaining much attention in the last years. This is due to the intriguing photophysical properties of gold(I) complexes, which usually confer to these supramolecular assemblies interesting luminescent properties, as well as the [...] Read more.
The development of supramolecular systems showing aurophilic interactions in solution is gaining much attention in the last years. This is due to the intriguing photophysical properties of gold(I) complexes, which usually confer to these supramolecular assemblies interesting luminescent properties, as well as the possibility of morphological modulation, through fine tuning of inter- and intramolecular aurophilic interactions, in synergy with the formation of other supramolecular contacts. In this work, an overview of the advances made in this area since 2015 is presented. A large variety of systems showing different spectroscopical and structural topologies has been reported. Moreover, these supramolecular assemblies have proven to be useful in a wide range of applications. Full article
(This article belongs to the Special Issue Gold Complexes)
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12 pages, 4400 KiB  
Review
Highlights on Gold TADF Complexes
by João Carlos Lima and Laura Rodríguez
Inorganics 2019, 7(10), 124; https://doi.org/10.3390/inorganics7100124 - 11 Oct 2019
Cited by 16 | Viewed by 4897
Abstract
Thermally activated delayed fluorescence (TADF) and TADF-organic light-emitting diodes (OLEDs) systems are being given increasing attention in research nowadays. Much more work has been done for organic-based materials in this field, but the use of TADF organometallic systems has also emerged in recent [...] Read more.
Thermally activated delayed fluorescence (TADF) and TADF-organic light-emitting diodes (OLEDs) systems are being given increasing attention in research nowadays. Much more work has been done for organic-based materials in this field, but the use of TADF organometallic systems has also emerged in recent years. In particular, TADF-based gold compounds have not been particularly well-explored, with a higher number of examples of Au(I)-molecules and fewer for the higher oxidation state Au(III) derivatives. Nevertheless, the novelty and observed results deserve attention. A careful analysis has been performed in this review by classifying the reported compounds into two different groups regarding the oxidation state of the metal, and within each group, the ancillary ligands. Specific examples to illustrate their potential applications are included in the different sections. Full article
(This article belongs to the Special Issue Gold Complexes)
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