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Sharma A, Kaur N, Singh N. An Encyclopedic Compendium on Chemosensing Supramolecular Metal-Organic Gels. Chem Asian J 2024; 19:e202400258. [PMID: 38629210 DOI: 10.1002/asia.202400258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/16/2024] [Indexed: 05/16/2024]
Abstract
Chemosensing, an interdisciplinary scientific domain, plays a pivotal role ranging from environmental monitoring to healthcare diagnostics and (inter)national security. Metal-organic gels (MOGs) are recognized for their stability, selectivity, and responsiveness, making them valuable for chemosensing applications. Researchers have explored the development of MOGs based on different metal ions and ligands, allowing for tailored properties and sensitivities, and have even demonstrated their applications as portable sensors such as paper-based test strips for practical use. Herein, several studies related to MOGs development and their applications in the chemosensing field via UV-visible or luminance along with electrochemical approach are presented. These papers explored MOGs as versatile materials with their use in sensing bio or environmental analytes. This review provides a foundational understanding of key concepts, methodologies, and recent advancements in this field, fostering the scientific community.
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Affiliation(s)
- Arun Sharma
- Department of Chemistry, Indian Institute of Technology Ropar, 140001, Rupnagar, Panjab, India
| | - Navneet Kaur
- Department of Chemistry, Panjab University, 160014, Chandigarh, India
| | - Narinder Singh
- Department of Chemistry, Indian Institute of Technology Ropar, 140001, Rupnagar, Panjab, India
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Gabriele F, Casieri C, Spreti N. Efficacy of Chitosan-Carboxylic Acid Hydrogels in Reducing and Chelating Iron for the Removal of Rust from Stone Surface. Gels 2024; 10:359. [PMID: 38920906 PMCID: PMC11202951 DOI: 10.3390/gels10060359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/17/2024] [Accepted: 05/20/2024] [Indexed: 06/27/2024] Open
Abstract
In the field of stone conservation, the removal of iron stains is one of the most challenging issues due to the stability and low solubility of the ferrous species. In the present paper, three different chitosan-based hydrogels added with acetic, oxalic or citric acids are applied on different lithotypes, i.e., granite, travertine and marble, widely diffused in monumental heritages, and artificially stained by deposition of a rust dispersion. The reducing power of carboxylic acids is combined with the good chelating properties of chitosan to effectively remove rust from stone surfaces. As evidenced by colorimetry on three samples of each lithotype and confirmed by 1H-NMR relaxometry and SEM/EDS analyses, the chitosan-oxalic acid hydrogel shows the best performance and a single application of 24 h is enough to get a good restoration of the stone original features. Lastly, the chitosan-oxalic acid hydrogel performs well when a rusted iron grid is placed directly on the lithic surfaces to simulate a more realistic pollution. Current work in progress is devoted to finding better formulations for marble, which is the most challenging to clean or, with a different approach, to developing protective agents to prevent rust deposition.
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Affiliation(s)
- Francesco Gabriele
- Department of Physical and Chemical Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (C.C.); (N.S.)
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Bandelli D, Casini A, Guaragnone T, Baglioni M, Mastrangelo R, Pensabene Buemi L, Chelazzi D, Baglioni P. Tailoring the properties of poly(vinyl alcohol) "twin-chain" gels via sebacic acid decoration. J Colloid Interface Sci 2024; 657:178-192. [PMID: 38039879 DOI: 10.1016/j.jcis.2023.11.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/10/2023] [Accepted: 11/15/2023] [Indexed: 12/03/2023]
Abstract
HYPOTHESIS The development of gels capable to adapt and act at the interface of rough surfaces is a central topic in modern science for Cultural Heritage preservation. To overcome the limitations of solvents or polymer solutions, commonly used in the restoration practice, poly(vinyl alcohol) (PVA) "twin-chain" polymer networks (TC-PNs) have been recently proposed. The properties of this new class of gels, that are the most performing gels available for Cultural Heritage preservation, are mostly unexplored. This paper investigates how chemical modifications affect gels' structure and their rheological behavior, producing new gelled systems with enhanced and tunable properties for challenging applications, not restricted to Cultural Heritage preservation. EXPERIMENTS In this study, the PVA-TC-PNs structural and functional properties were changed by functionalization with sebacic acid into a new class of TC-PNs. Functionalization affects the porosity and nanostructure of the network, changing its uptake/release of fluids and favoring the uptake of organic solvents with various polarity, a crucial feature to boost the versatility of TC-PNs in practical applications. FINDINGS The functionalized gels exhibited unprecedented performances during the cleaning of contemporary paintings from the Peggy Gugghenheim collection (Venice), whose restoration with traditional solvents and swabs would be difficult to avoid possible disfigurements to the painted layers. These results candidate the functionalized TC-PNs as a new, highly promising class of gels in art preservation.
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Affiliation(s)
- Damiano Bandelli
- Department of Chemistry, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, FI 50019, Italy.
| | - Andrea Casini
- Department of Chemistry and CSGI, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, FI 50019, Italy.
| | - Teresa Guaragnone
- Department of Chemistry and CSGI, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, FI 50019, Italy.
| | - Michele Baglioni
- Department of Chemistry and CSGI, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, FI 50019, Italy; Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, Siena 53100, Italy.
| | - Rosangela Mastrangelo
- Department of Chemistry, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, FI 50019, Italy.
| | | | - David Chelazzi
- Department of Chemistry and CSGI, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, FI 50019, Italy.
| | - Piero Baglioni
- Department of Chemistry and CSGI, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, FI 50019, Italy.
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Bartoli F, Corradi L, Hosseini Z, Privitera A, Zuena M, Kumbaric A, Graziani V, Tortora L, Sodo A, Caneva G. In Vitro Viability Tests of New Ecofriendly Nanosystems Incorporating Essential Oils for Long-Lasting Conservation of Stone Artworks. Gels 2024; 10:132. [PMID: 38391462 PMCID: PMC10888044 DOI: 10.3390/gels10020132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/02/2024] [Accepted: 02/04/2024] [Indexed: 02/24/2024] Open
Abstract
The study explores the application of natural biocides (oregano essential oil and eugenol, directly applied in solutions or encapsulated within silica nanocapsules) for safeguarding stone cultural heritage from biodeterioration, using green algae (Chlorococcum sp.) and cyanobacteria (Leptolyngbya sp.) as common pioneer biodeteriogens. Core-shell nanocontainers were built for a controlled release of microbicidal agents, a safe application of chemicals and a prolonged efficacy. The qualitative and quantitative evaluations of biocide efficiency at different doses were periodically performed in vitro, after six scheduled intervals of time (until 100 days). The release kinetics of composite biocide-embedding silica nanocapsules were characterized by the UV-Vis spectroscopy technique. Data showed both promising potential and some limitations. The comparative tests of different biocidal systems shed light on their variable efficacy against microorganisms, highlighting how encapsulation influences the release dynamics and the overall effectiveness. Both the essential oils showed a potential efficacy in protective antifouling coatings for stone artifacts. Ensuring compatibility with materials, understanding their differences in biocidal activity and their release rates becomes essential in tailoring gel, microemulsion or coating products for direct on-site application.
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Affiliation(s)
- Flavia Bartoli
- Institute of Heritage Science, National Research Council, ISPC-CNR, 00010 Rome, Italy
- Department of Science, University of Roma Tre, 00146 Rome, Italy
| | - Leonora Corradi
- Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum, Ravenna Campus, Bologna University, 48121 Ravenna, Italy
| | - Zohreh Hosseini
- Department of Science, University of Roma Tre, 00146 Rome, Italy
| | | | - Martina Zuena
- Department of Science, University of Roma Tre, 00146 Rome, Italy
| | - Alma Kumbaric
- Department of Science, University of Roma Tre, 00146 Rome, Italy
| | - Valerio Graziani
- National Institute of Nuclear Physics (INFN), Roma Tre Section, 00146 Rome, Italy
| | - Luca Tortora
- National Institute of Nuclear Physics (INFN), Roma Tre Section, 00146 Rome, Italy
| | - Armida Sodo
- Department of Science, University of Roma Tre, 00146 Rome, Italy
| | - Giulia Caneva
- Department of Science, University of Roma Tre, 00146 Rome, Italy
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Adorinni S, Gentile S, Bellotto O, Kralj S, Parisi E, Cringoli MC, Deganutti C, Malloci G, Piccirilli F, Pengo P, Vaccari L, Geremia S, Vargiu AV, De Zorzi R, Marchesan S. Peptide Stereochemistry Effects from p Ka-Shift to Gold Nanoparticle Templating in a Supramolecular Hydrogel. ACS NANO 2024; 18:3011-3022. [PMID: 38235673 DOI: 10.1021/acsnano.3c08004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The divergent supramolecular behavior of a series of tripeptide stereoisomers was elucidated through spectroscopic, microscopic, crystallographic, and computational techniques. Only two epimers were able to effectively self-organize into amphipathic structures, leading to supramolecular hydrogels or crystals, respectively. Despite the similarity between the two peptides' turn conformations, stereoconfiguration led to different abilities to engage in intramolecular hydrogen bonding. Self-assembly further shifted the pKa value of the C-terminal side chain. As a result, across the pH range 4-6, only one epimer predominated sufficiently as a zwitterion to reach the critical molar fraction, allowing gelation. By contrast, the differing pKa values and higher dipole moment of the other epimer favored crystallization. The four stereoisomers were further tested for gold nanoparticle (AuNP) formation, with the supramolecular hydrogel being the key to control and stabilize AuNPs, yielding a nanocomposite that catalyzed the photodegradation of a dye. Importantly, the AuNP formation occurred without the use of reductants other than the peptide, and the redox chemistry was investigated by LC-MS, NMR, and infrared scattering-type near field optical microscopy (IR s-SNOM). This study provides important insights for the rational design of simple peptides as minimalistic and green building blocks for functional nanocomposites.
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Affiliation(s)
- Simone Adorinni
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Serena Gentile
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Ottavia Bellotto
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Slavko Kralj
- Materials Synthesis Department, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Evelina Parisi
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Maria C Cringoli
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Caterina Deganutti
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Giuliano Malloci
- Physics Department, University of Cagliari, 09042 Monserrato, Cagliari, Italy
| | - Federica Piccirilli
- Elettra Sincrotrone Trieste, 34149 Basovizza, Italy
- Area Science Park, Padriciano 99, 34149 Trieste, Italy
| | - Paolo Pengo
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Lisa Vaccari
- Elettra Sincrotrone Trieste, 34149 Basovizza, Italy
| | - Silvano Geremia
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Attilio V Vargiu
- Physics Department, University of Cagliari, 09042 Monserrato, Cagliari, Italy
| | - Rita De Zorzi
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
| | - Silvia Marchesan
- Chemical Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy
- Unit of Trieste, INSTM, 34127 Trieste, Italy
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