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Bettini S, Ottolini M, Valli D, Pagano R, Ingrosso C, Roeffaers M, Hofkens J, Valli L, Giancane G. Synthesis and Characterization of Gold Chiral Nanoparticles Functionalized by a Chiral Drug. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13091526. [PMID: 37177071 PMCID: PMC10180680 DOI: 10.3390/nano13091526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/21/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023]
Abstract
Inorganic chiral nanoparticles are attracting more and more attention due to their peculiar optical properties and potential biological applications, such as bioimaging, therapeutics, and diagnostics. Among inorganic chiral nanoparticles, gold chiral nanostructures were demonstrated to be very interesting in this context, with good physical chemical stability and also the possibility to decorate the surface, improving biomedical application as the interaction with the bio-systems. Gold (Au) nanostructures were synthesized according to a seed-mediated procedure which envisages the use of cetyltrimethylammonium bromide (CTAB) as the capping agent and L- and D-cysteine to promote chirality. Au nanostructures have been demonstrated to have opposite circular dichroism signals depending on the amino acid enantiomer used during the synthesis. Then, a procedure to decorate the Au surface with penicillamine, a drug used for the treatment of Wilson's disease, was developed. The composite material of gold nanoparticles/penicillamine was characterized using electron microscopy, and the penicillamine functionalization was monitored by means of UV-Visible, Raman, and infrared spectroscopy, highlighting the formation of the Au-S bond. Furthermore, electron circular dichroism was used to monitor the chirality of the synthesized nanostructures and it was demonstrated that both penicillamine enantiomers can be successfully bonded with both the enantiomers of the gold nanostructures without affecting gold nanoparticles' chirality. The effective modification of nanostructures' surfaces via penicillamine introduction allowed us to address the important issue of controlling chirality and surface properties in the chiral nano-system.
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Affiliation(s)
- Simona Bettini
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via per Monteroni, 73100 Lecce, Italy
| | - Michela Ottolini
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
| | - Donato Valli
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Rosanna Pagano
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via per Monteroni, 73100 Lecce, Italy
| | - Chiara Ingrosso
- CNR-IPCF SS Bari, c/o Dipartimento di Chimica dell'Università degli Studi di Bari, Via Orabona 4, 70126 Bari, Italy
| | | | - Johan Hofkens
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Ludovico Valli
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via per Monteroni, 73100 Lecce, Italy
| | - Gabriele Giancane
- Department of Cultural Heritage, University of Salento, Via D. Birago 84, 73100 Lecce, Italy
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Bettini S, Giancane G. Synthesis, Functionalization and Applications of Nanocarbons. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2738. [PMID: 36014603 PMCID: PMC9415884 DOI: 10.3390/nano12162738] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
The Special Issue "Synthesis, Functionalization and Applications of Nanocarbons" starts from the growing interest of the scientific community in carbon-based materials and the various applications of these versatile compounds [...].
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Affiliation(s)
- Simona Bettini
- Department of Biological and Environmental Sciences and Technologies, DISTEBA, University of Salento, Via per Arnesano, I-73100 Lecce, Italy
| | - Gabriele Giancane
- Department of Cultural Heritage, University of Salento, Via Birago 64, I-73100 Lecce, Italy
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