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Denikaev A, Kuznetsova Y, Bykov A, Zhilyakov A, Belova K, Abramov P, Moskalenko N, Skorb E, Grzhegorzhevskii K. Keplerate {Mo 132}-Stearic Acid Conjugates: Supramolecular Synthons for the Design of Dye-Loaded Nanovesicles, Langmuir-Schaefer Films, and Infochemical Applications. ACS Appl Mater Interfaces 2024; 16:7430-7443. [PMID: 38299992 DOI: 10.1021/acsami.3c16374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Self-assembly gives rise to the versatile strategies of smart material design but requires precise control on the supramolecular level. Here, inorganic-organic synthons (conjugates) are produced by covalently grafting stearic acid tails to giant polyoxometalate (POM) Keplerate-type {Mo132} through an organosilicon linker (3-aminopropyltrimethoxysilane, APTMS). Using the liposome production approach, the synthons self-assemble to form hollow nanosized vesicles (100-200 nm in diameter), which can be loaded with organic dyes─eriochrome black T (ErChB) and fluorescein (FL)─where the POM layer serves as a membrane with subnanopores for cell-like communication. The dye structure plays an essential role in embedding dyes into the vesicle's shell, which opens the way to control the colloidal stability of the system. The produced vesicles are moved by an electric field and used for the creation of an infochemistry scheme with three types of logic gates (AND, OR, and IMP). To design 2D materials, synthons can form spread films, from simple addition on the water-air interface to lateral compression in the Langmuir bath, and highly ordered structures appear, demonstrating electron diffraction in Langmuir-Schaefer (LS) films. These results show the significant potential of POM-based synthons and nanosized vesicles to supramolecular design the diversity of smart materials.
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Affiliation(s)
- Andrey Denikaev
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
| | - Yulia Kuznetsova
- Institute of Solid State Chemistry of the Ural Branch of the RAS, 91, Pervomaiskaya St., 620990 Ekaterinburg, Russia
| | - Alexey Bykov
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Arkadiy Zhilyakov
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
- M.N. Mikheev lnstitute of Metal Physics of Ural Branch of RAS,18 S. Kovalevskaya St., 620108 Ekaterinburg, Russia
| | - Ksenia Belova
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
- Institute of High Temperature Electrochemistry of the Ural Branch of RAS, 22 S. Kovalevskoy St./20 Akademicheskaya St., 620066 Ekaterinburg, Russia
| | - Pavel Abramov
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of RAS, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Nikolai Moskalenko
- Institute of High Temperature Electrochemistry of the Ural Branch of RAS, 22 S. Kovalevskoy St./20 Akademicheskaya St., 620066 Ekaterinburg, Russia
| | - Ekaterina Skorb
- Infochemistry Scientific Center, ITMO University, Kronverksky Pr. 49, bldg. A, 197101 St. Petersburg, Russia
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Abstract
Nowadays, information processing is based on semiconductor (e.g., silicon) devices. Unfortunately, the performance of such devices has natural limitations owing to the physics of semiconductors. Therefore, the problem of finding new strategies for storing and processing an ever-increasing amount of diverse data is very urgent. To solve this problem, scientists have found inspiration in nature, because living organisms have developed uniquely productive and efficient mechanisms for processing and storing information. We address several biological aspects of information and artificial models mimicking corresponding bioprocesses. For instance, we review the formation of synchronization patterns and the emergence of order out of chaos in model chemical systems. We also consider molecular logic and ion fluxes as information carriers. Finally, we consider recent progress in infochemistry, a new direction at the interface of chemistry, biology, and computer science, considering unconventional methods of information processing.
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Affiliation(s)
- Nikolay V Ryzhkov
- Infochemistry Scientific Center of ITMO University, 191002 Saint Petersburg, Russia; , , ,
| | - Konstantin G Nikolaev
- Infochemistry Scientific Center of ITMO University, 191002 Saint Petersburg, Russia; , , ,
| | - Artemii S Ivanov
- Infochemistry Scientific Center of ITMO University, 191002 Saint Petersburg, Russia; , , ,
| | - Ekaterina V Skorb
- Infochemistry Scientific Center of ITMO University, 191002 Saint Petersburg, Russia; , , ,
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Exton DA, McGenity TJ, Steinke M, Smith DJ, Suggett DJ. Uncovering the volatile nature of tropical coastal marine ecosystems in a changing world. Glob Chang Biol 2015; 21:1383-1394. [PMID: 25311223 DOI: 10.1111/gcb.12764] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 09/25/2014] [Indexed: 06/04/2023]
Abstract
Biogenic volatile organic compounds (BVOCs), in particular dimethyl sulphide (DMS) and isoprene, have fundamental ecological, physiological and climatic roles. Our current understanding of these roles is almost exclusively established from terrestrial or oceanic environments but signifies a potentially major, but largely unknown, role for BVOCs in tropical coastal marine ecosystems. The tropical coast is a transition zone between the land and ocean, characterized by highly productive and biodiverse coral reefs, seagrass beds and mangroves, which house primary producers that are amongst the greatest emitters of BVOCs on the planet. Here, we synthesize our existing understanding of BVOC emissions to produce a novel conceptual framework of the tropical marine coast as a continuum from DMS-dominated reef producers to isoprene-dominated mangroves. We use existing and previously unpublished data to consider how current environmental conditions shape BVOC production across the tropical coastal continuum, and in turn how BVOCs can regulate environmental stress tolerance or species interactions via infochemical networks. We use this as a framework to discuss how existing predictions of future tropical coastal BVOC emissions, and the roles they play, are effectively restricted to present day 'baseline' trends of BVOC production across species and environmental conditions; as such, there remains a critical need to focus research efforts on BVOC responses to rapidly accelerating anthropogenic impacts at local and regional scales. We highlight the complete lack of current knowledge required to understand the future ecological functioning of these important systems, and to predict whether feedback mechanisms are likely to regulate or exacerbate current climate change scenarios through environmentally and ecologically mediated changes to BVOC budgets at the ecosystem level.
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Affiliation(s)
- Dan A Exton
- Operation Wallacea, Wallace House, Old Bolingbroke, Spilsby, Lincolnshire, PE23 4EX, UK; School of Biological Sciences, University of Essex, Colchester, Essex, CO3 4SQ, UK
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