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Cirillo G, Curcio M, Oliviero Rossi C, De Filpo G, Baratta M, De Luca M, Iemma F, Nicoletta FP. Curcumin-Sodium Alginate and Curcumin-Chitosan Conjugates as Drug Delivery Systems: An Interesting Rheological Behaviour. Molecules 2023; 28:5893. [PMID: 37570862 PMCID: PMC10420803 DOI: 10.3390/molecules28155893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
The conjugation of polyphenols is a valuable strategy with which to confer tailored properties to polymeric materials of biomedical interest. Within this investigation, we aim to explore the possibility to use this synthetic approach to increase the viscosity of conjugates, thus allowing the release of a loaded therapeutic to be better controlled over time than in neat polyphenols. Curcumin (CUR) was conjugated to sodium alginate (CA) and chitosan (CS) with functionalisation degrees of 9.2 (SA-CUR) and 15.4 (CS-CUR) mg g-1. Calorimetric analyses showed higher degrees of chain rigidity upon conjugation, with a shift of the degradation peaks to higher temperatures (from 239 to 245 °C and from 296 to 303 °C for SA-CUR and CS-CUR, respectively). Rheological analyses were used to prove the enhanced interconnection between the polymer chains in the conjugates, confirmed by the weak gel parameters, A and z. Moreover, the typical non-Newtonian behaviour of the high-molecular-weight polysaccharides was recorded, together with an enhancement of the activation energy, Ea, in CS-CUR vs. CS (opposite behaviour recorded for SA-CUR vs. SA). The evaluation of the delivery performance (of Doxorubicin as a model drug) showed sustained release profiles, opening opportunities for the development of controlled delivery systems.
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Affiliation(s)
- Giuseppe Cirillo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende (CS), Italy; (M.C.); (M.D.L.); (F.I.); (F.P.N.)
| | - Manuela Curcio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende (CS), Italy; (M.C.); (M.D.L.); (F.I.); (F.P.N.)
| | - Cesare Oliviero Rossi
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy; (C.O.R.); (G.D.F.); (M.B.)
| | - Giovanni De Filpo
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy; (C.O.R.); (G.D.F.); (M.B.)
| | - Mariafrancesca Baratta
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy; (C.O.R.); (G.D.F.); (M.B.)
| | - Michele De Luca
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende (CS), Italy; (M.C.); (M.D.L.); (F.I.); (F.P.N.)
| | - Francesca Iemma
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende (CS), Italy; (M.C.); (M.D.L.); (F.I.); (F.P.N.)
| | - Fiore Pasquale Nicoletta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende (CS), Italy; (M.C.); (M.D.L.); (F.I.); (F.P.N.)
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2
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Mirzamani M, Dawn A, Garvey CJ, He L, Koerner H, Kumari H. Structural insights into self-assembly of a slow-evolving and mechanically robust supramolecular gel via time-resolved small-angle neutron scattering. Phys Chem Chem Phys 2022; 25:131-141. [PMID: 36475500 DOI: 10.1039/d2cp01826h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The supramolecular assembly process is a widespread phenomenon found in both synthetically engineered and naturally occurring systems, such as colloids, liquid crystals and micelles. However, a basic understanding of the evolution of self-assembly processes over time remains elusive, primarily owing to the fast kinetics involved in these processes and the complex nature of the various non-covalent interactions operating simultaneously. With the help of a slow-evolving supramolecular gel derived from a urea-based gelator, we aim to capture the different stages of the self-assembly process commencing from nucleation. In particular, we are able to study the self-assembly in real time using time-resolved small-angle neutron scattering (SANS) at length scales ranging from approximately 30 Å to 250 Å. Systems with and without sonication are compared simultaneously, to follow the different kinetic paths involved in these two cases. Time-dependent NMR, morphological and rheological studies act complementarily to the SANS data at sub-micron and bulk length scales. A hollow columnar formation comprising of gelator monomers arranged radially along the long axis of the fiber and solvent in the core is detected at the very early stage of the self-assembly process. While sonication promotes uniform growth of fibers and fiber entanglement, the absence of such a stimulus helps extensive bundle formation at a later stage and at the microscopic domain, making the gel system mechanically robust. The results of the present work provide a thorough understanding of the self-assembly process and reveal a path for fine-tuning such growth processes for applications such as the cosmetics industry, 3D printing ink development and paint industry.
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Affiliation(s)
- Marzieh Mirzamani
- James L. Winkle College of Pharmacy, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267-0004, USA.
| | - Arnab Dawn
- James L. Winkle College of Pharmacy, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267-0004, USA.
| | - Christopher J Garvey
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstraße 1, Garching 85748, Germany
| | - Lilin He
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37831, USA
| | - Hilmar Koerner
- Materials & Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, USA
| | - Harshita Kumari
- James L. Winkle College of Pharmacy, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267-0004, USA.
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3
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O’Brien TE, Ioffe LB, Su Y, Fushman D, Neven H, Babbush R, Smelyanskiy V. Quantum computation of molecular structure using data from challenging-to-classically-simulate nuclear magnetic resonance experiments. PRX QUANTUM : A PHYSICAL REVIEW JOURNAL 2022; 3:030345. [PMID: 36624758 PMCID: PMC9825292 DOI: 10.1103/prxquantum.3.030345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
We propose a quantum algorithm for inferring the molecular nuclear spin Hamiltonian from time-resolved measurements of spin-spin correlators, which can be obtained via nuclear magnetic resonance (NMR). We focus on learning the anisotropic dipolar term of the Hamiltonian, which generates dynamics that are challenging to classically simulate in some contexts. We demonstrate the ability to directly estimate the Jacobian and Hessian of the corresponding learning problem on a quantum computer, allowing us to learn the Hamiltonian parameters. We develop algorithms for performing this computation on both noisy near-term and future fault-tolerant quantum computers. We argue that the former is promising as an early beyond-classical quantum application since it only requires evolution of a local spin Hamiltonian. We investigate the example of a protein (ubiquitin) confined on a membrane as a benchmark of our method. We isolate small spin clusters, demonstrate the convergence of our learning algorithm on one such example, and then investigate the learnability of these clusters as we cross the ergodic to non-ergodic phase transition by suppressing the dipolar interaction. We see a clear correspondence between a drop in the multifractal dimension measured across many-body eigenstates of these clusters, and a transition in the structure of the Hessian of the learning cost function (from degenerate to learnable). Our hope is that such quantum computations might enable the interpretation and development of new NMR techniques for analyzing molecular structure.
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Affiliation(s)
| | - Lev B. Ioffe
- Google Quantum AI, Venice, CA 90291, United States
| | - Yuan Su
- Google Quantum AI, Venice, CA 90291, United States
| | - David Fushman
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, United States
| | | | - Ryan Babbush
- Google Quantum AI, Venice, CA 90291, United States
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4
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Mattsson I, Lahtinen M, Sitdikov R, Wank B, Saloranta-Simell T, Leino R. Phase-selective low molecular weight organogelators derived from allylated d-mannose. Carbohydr Res 2022; 518:108596. [DOI: 10.1016/j.carres.2022.108596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/10/2022] [Accepted: 05/17/2022] [Indexed: 11/02/2022]
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5
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Li P, Malveau C, Zhu XX, Wuest JD. Using Nuclear Magnetic Resonance Spectroscopy to Probe Hydrogels Formed by Sodium Deoxycholate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5111-5118. [PMID: 34730971 DOI: 10.1021/acs.langmuir.1c02175] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hydrogels of bile acids and their salts are promising materials for drug delivery, cellular immobilization, and other applications. However, these hydrogels are poorly understood at the molecular level, and further study is needed to allow improved materials to be created by design. We have used NMR spectroscopy to probe hydrogels formed from mixtures of formic acid and sodium deoxycholate (NaDC), a common bile acid salt. By assaying the ratio of deoxycholate molecules that are immobilized as part of the fibrillar network of the hydrogels and those that can diffuse, we have found that 65% remain free under typical conditions. The network appears to be composed of both the acid and salt forms of deoxycholate, possibly because a degree of charge inhibits excessive aggregation and precipitation of the fibrils. Spin-spin relaxation times provided a molecular-level estimate of the temperature of gel-sol transition (42 °C), which is virtually the same as the value determined by analyzing macroscopic parameters. Saturation transfer difference (STD) NMR spectroscopy established that formic acid, which is present mainly as formate, is not immobilized as part of the gelating network. In contrast, HDO interacts with the network, which presumably has a surface with exposed hydrophilic groups that form hydrogen bonds with water. Moreover, the STD NMR experiments revealed that the network is a dynamic entity, with molecules of deoxycholate associating and dissociating reversibly. This exchange appears to occur preferentially by contact of the hydrophobic edges or faces of free molecules of deoxycholate with those of molecules immobilized as components of the network. In addition, DOSY experiments revealed that gelation has little effect on the diffusion of free NaDC and HDO.
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Affiliation(s)
- Puzhen Li
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3 Canada
| | - Cédric Malveau
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3 Canada
| | - X X Zhu
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3 Canada
| | - James D Wuest
- Département de Chimie, Université de Montréal, Montréal, Québec H2V 0B3 Canada
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6
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Peydayesh M, Chen X, Vogt J, Donat F, Müller CR, Mezzenga R. Amyloid fibril-UiO-66-NH 2 aerogels for environmental remediation. Chem Commun (Camb) 2022; 58:5104-5107. [PMID: 35388383 DOI: 10.1039/d2cc00695b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A sustainable hybrid aerogel based on β-lactoglobulin amyloid fibril/UiO-66-NH2 is developed for environmental remediation. The hybrid aerogel's CO2 capture and water purification performances were investigated. The hybrid aerogel can achieve CO2 capture and possesses excellent adsorption capacities for several heavy metals, dyes, and organic solvents.
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Affiliation(s)
- Mohammad Peydayesh
- Department of Health Sciences and Technology, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
| | - Xiulin Chen
- Department of Health Sciences and Technology, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
| | - Julia Vogt
- Department of Health Sciences and Technology, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
| | - Felix Donat
- Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland
| | - Christoph R Müller
- Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland. .,Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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7
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Nourdine A, Giboz J, Le Brouster R, Dubelley F, Carrier S, Tenchine L, Mele P. Tailored fluorinated oligo-polystyrene as efficient additive for the hydrophobicity/oleophobicity improvement of styrenic polymers. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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Twigg MS, Baccile N, Banat IM, Déziel E, Marchant R, Roelants S, Van Bogaert INA. Microbial biosurfactant research: time to improve the rigour in the reporting of synthesis, functional characterization and process development. Microb Biotechnol 2021; 14:147-170. [PMID: 33249753 PMCID: PMC7888453 DOI: 10.1111/1751-7915.13704] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/16/2020] [Accepted: 10/23/2020] [Indexed: 01/01/2023] Open
Abstract
The demand for microbially produced surface-active compounds for use in industrial processes and products is increasing. As such, there has been a comparable increase in the number of publications relating to the characterization of novel surface-active compounds: novel producers of already characterized surface-active compounds and production processes for the generation of these compounds. Leading researchers in the field have identified that many of these studies utilize techniques are not precise and accurate enough, so some published conclusions might not be justified. Such studies lacking robust experimental evidence generated by validated techniques and standard operating procedures are detrimental to the field of microbially produced surface-active compound research. In this publication, we have critically reviewed a wide range of techniques utilized in the characterization of surface-active compounds from microbial sources: identification of surface-active compound producing microorganisms and functional testing of resultant surface-active compounds. We have also reviewed the experimental evidence required for process development to take these compounds out of the laboratory and into industrial application. We devised this review as a guide to both researchers and the peer-reviewed process to improve the stringency of future studies and publications within this field of science.
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Affiliation(s)
- Matthew Simon Twigg
- School of Biomedical SciencesUlster UniversityColeraine, Co. LondonderryBT52 1SAUK
| | - Niki Baccile
- Centre National de la Recherche ScientifiqueLaboratoire de Chimie de la Matière Condensée de ParisSorbonne UniversitéLCMCPParisF‐75005France
| | - Ibrahim M. Banat
- School of Biomedical SciencesUlster UniversityColeraine, Co. LondonderryBT52 1SAUK
| | - Eric Déziel
- Centre Armand‐Frappier Santé BiotechnologieInstitut National de la Recherche Scientifique (INRS)531, Boul. Des PrairiesLavalQCH7V 1B7Canada
| | - Roger Marchant
- School of Biomedical SciencesUlster UniversityColeraine, Co. LondonderryBT52 1SAUK
| | - Sophie Roelants
- Centre for Industrial Biotechnology and Biocatalysis (InBio.be)Faculty of Bioscience EngineeringGhent UniversityGhentBelgium
- Bio Base Europe Pilot PlantRodenhuizenkaai 1Ghent9042Belgium
| | - Inge N. A. Van Bogaert
- Centre for Synthetic BiologyDepartment of BiotechnologyGhent UniversityCoupure Links 653Ghent9000Belgium
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9
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Perić B, Szalontai G, Borovina M, Vikić-Topić D, Kirin SI. Symmetry breaking in the solid state of 9,10-anthracene amino acid conjugates as seen by X-ray diffraction and NMR spectroscopy. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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White LJ, Wark C, Croucher L, Draper ER, Hiscock JR. High-throughput characterisation of supramolecular gelation processes using a combination of optical density, fluorescence and UV-Vis absorption measurements. Chem Commun (Camb) 2020; 56:9557-9560. [PMID: 32691764 DOI: 10.1039/d0cc04033a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we showcase the use of high-throughput microplate reader methodologies for the characterisation of supramolecular gels. We demonstrate how UV-Vis absorption, optical density and fluorescence measurements can selectively define gel fibre assembly/disassembly processes, casting a new light on the construction of these materials.
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Affiliation(s)
- Lisa J White
- School of Physical Sciences, University of Kent, Canterbury, Kent, CT2 7NH, UK.
| | - Catherine Wark
- BMG Labtech, 8 Bell Business Park, Buckinghamshire, HP19 8JR, UK
| | | | - Emily R Draper
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Jennifer R Hiscock
- School of Physical Sciences, University of Kent, Canterbury, Kent, CT2 7NH, UK.
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11
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El Hariri El Nokab M, van der Wel PC. Use of solid-state NMR spectroscopy for investigating polysaccharide-based hydrogels: A review. Carbohydr Polym 2020; 240:116276. [DOI: 10.1016/j.carbpol.2020.116276] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/22/2020] [Accepted: 04/08/2020] [Indexed: 12/21/2022]
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12
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Kolari K, Bulatov E, Tatikonda R, Bertula K, Kalenius E, Haukka M. Self-healing, luminescent metallogelation driven by synergistic metallophilic and fluorine-fluorine interactions. SOFT MATTER 2020; 16:2795-2802. [PMID: 32104828 DOI: 10.1039/c9sm02186h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Square planar platinum(ii) complexes are attractive building blocks for multifunctional soft materials due to their unique optoelectronic properties. However, for soft materials derived from synthetically simple discrete metal complexes, achieving a combination of optical properties, thermoresponsiveness and excellent mechanical properties is a major challenge. Here, we report the rapid self-recovery of luminescent metallogels derived from platinum(ii) complexes of perfluoroalkyl and alkyl derivatives of terpyridine ligands. Using single crystal X-ray diffraction studies, we show that the presence of synergistic platinum-platinum (PtPt) metallopolymerization and fluorine-fluorine (FF) interactions are the major driving forces in achieving hierarchical superstructures. The resulting bright red gels showed the presence of highly entangled three-dimensional networks and helical nanofibres with both (P and M) handedness. The gels recover up to 87% of their original storage modulus even after several cycles under oscillatory step-strain rheological measurements showing rapid self-healing. The luminescence properties, along with thermo- and mechanoresponsive gelation, provide the potential to utilize synthetically simple discrete complexes in advanced optical materials.
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Affiliation(s)
- Kalle Kolari
- Department of Chemistry, University of Jyväskylä, P. O. Box 35, FI-40014 Jyväskylä, Finland.
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14
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Mitova V, Shestakova P, Koseva N, Troev K. Phosphorus and Silicon Containing Inorganic Polymer Poly(dimethylsilane H‐phosphonate): Synthesis and NMR Spectroscopic Characterization. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Violeta Mitova
- Institute of Polymers Bulgarian Academy of Sciences Akad. G. Bonchev St., Bl 103‐A 1113 Sofia Bulgaria
| | - Pavletta Shestakova
- NMR Centre, Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences Acad. G. Bontchev str. Bl. 9 1113 Sofia Bulgaria
| | - Neli Koseva
- Institute of Polymers Bulgarian Academy of Sciences Akad. G. Bonchev St., Bl 103‐A 1113 Sofia Bulgaria
| | - Kolio Troev
- Institute of Polymers Bulgarian Academy of Sciences Akad. G. Bonchev St., Bl 103‐A 1113 Sofia Bulgaria
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15
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Tatikonda R, Bulatov E, Özdemir Z, Haukka M. Infinite coordination polymer networks: metallogelation of aminopyridine conjugates and in situ silver nanoparticle formation. SOFT MATTER 2019; 15:442-451. [PMID: 30570631 DOI: 10.1039/c8sm02006j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein we report silver(i) directed infinite coordination polymer network (ICPN) induced self-assembly of low molecular weight organic ligands leading to metallogelation. Structurally simple ligands are derived from 3-aminopyridine and 4-aminopyridine conjugates which are composed of either pyridine or 2,2'-bipyridine cores. The cation specific gelation was found to be independent of the counter anion, leading to highly entangled fibrillar networks facilitating the immobilization of solvent molecules. Rheological studies revealed that the elastic storage modulus (G') of a given gelator molecule is counter anion dependent. The metallogels derived from ligands containing a bipyridine core displayed higher G' values than those with a pyridine core. Furthermore, using single crystal X-ray diffraction studies and 1H-15N two-dimensional (2D) correlation NMR spectroscopy, we show that the tetracoordination of silver ions enables simultaneous coordination polymerization and metallosupramolecular cross-linking. The resulting metallogels show spontaneous, in situ nanoparticle (d < 2-3 nm) formation without any additional reducing agents. The silver nanoparticle formation was followed using spectroscopic studies, and the self-assembled fibrillar networks were imaged using transmission electron microscopy (TEM) imaging.
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Affiliation(s)
| | - Evgeny Bulatov
- Department of Chemistry, University of Jyväskylä, P. O. Box 35, FI-40014 Jyväskylä, Finland.
| | - Zülal Özdemir
- Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Technicka 5, 16628 Prague 6, Czech Republic and Institute of Experimental Botany AS CR, Isotope Laboratory, Videnska 1083, 14220 Prague 4, Czech Republic
| | - Matti Haukka
- Department of Chemistry, University of Jyväskylä, P. O. Box 35, FI-40014 Jyväskylä, Finland.
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16
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Taylor ME, Panzer MJ. Fully-Zwitterionic Polymer-Supported Ionogel Electrolytes Featuring a Hydrophobic Ionic Liquid. J Phys Chem B 2018; 122:8469-8476. [DOI: 10.1021/acs.jpcb.8b05985] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Morgan E. Taylor
- Department of Chemical & Biological Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Matthew J. Panzer
- Department of Chemical & Biological Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
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17
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Tatikonda R, Bertula K, Nonappa, Hietala S, Rissanen K, Haukka M. Bipyridine based metallogels: an unprecedented difference in photochemical and chemical reduction in the in situ nanoparticle formation. Dalton Trans 2018; 46:2793-2802. [PMID: 28174774 DOI: 10.1039/c6dt04253h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Metal co-ordination induced supramolecular gelation of low molecular weight organic ligands is a rapidly expanding area of research due to the potential in creating hierarchically self-assembled multi-stimuli responsive materials. In this context, structurally simple O-methylpyridine derivatives of 4,4'-dihydroxy-2,2'-bipyridine ligands are reported. Upon complexation with Ag(i) ions in aqueous dimethyl sulfoxide (DMSO) solutions the ligands spontaneously form metallosupramolecular gels at concentrations as low as 0.6 w/v%. The metal ions induce the self-assembly of three dimensional (3D) fibrillar networks followed by the spontaneous in situ reduction of the Ag-centers to silver nanoparticles (AgNPs) when exposed to daylight. Significant size and morphological differences of the AgNP's was observed between the standard chemical and photochemical reduction of the metallogels. The gelation ability, the nanoparticle formation and rheological properties were found to be depend on the ligand structure, while the strength of the gels is affected by the water content of the gels.
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Affiliation(s)
- Rajendhraprasad Tatikonda
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P. O. Box 35, FI-40014, Jyväskylä, Finland.
| | - Kia Bertula
- Department of Applied Physics, Molecular Materials Group, Aalto University School of Science, Puumiehenkuja 2, FI-02150, Espoo, Finland
| | - Nonappa
- Department of Applied Physics, Molecular Materials Group, Aalto University School of Science, Puumiehenkuja 2, FI-02150, Espoo, Finland
| | - Sami Hietala
- Department of Chemistry, University of Helsinki, P. O. Box 55, FI-00014, Helsinki, Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P. O. Box 35, FI-40014, Jyväskylä, Finland.
| | - Matti Haukka
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P. O. Box 35, FI-40014, Jyväskylä, Finland.
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18
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Arnedo-Sánchez L, Nonappa N, Bhowmik S, Hietala S, Puttreddy R, Lahtinen M, De Cola L, Rissanen K. Rapid self-healing and anion selectivity in metallosupramolecular gels assisted by fluorine–fluorine interactions. Dalton Trans 2017; 46:7309-7316. [DOI: 10.1039/c7dt00983f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Metal complexes from perfluoroalkylamide terpyridine self-assemble into anion selective gels, which manifest self-healing and thermal rearrangement in aqueous dimethyl sulfoxide.
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Affiliation(s)
| | - Nonappa Nonappa
- Molecular Materials Group
- Department of Applied Physics
- Aalto University School of Science
- Espoo
- Finland
| | - Sandip Bhowmik
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- Jyväskylä
- Finland
| | - Sami Hietala
- Department of Chemistry
- University of Helsinki
- Helsinki
- Finland
| | - Rakesh Puttreddy
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- Jyväskylä
- Finland
| | - Manu Lahtinen
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- Jyväskylä
- Finland
| | - Luisa De Cola
- ISIS
- Université de Strasbourg and CNRS UMR 7006
- Strasbourg 67000
- France
| | - Kari Rissanen
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- Jyväskylä
- Finland
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Rahman MJ, Shimizu H, Hasegawa M, Iyoda M. Pentadecaphenylenes: synthesis, self-assembly and complexation with fullerene C60. Org Chem Front 2017. [DOI: 10.1039/c7qo00258k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Macrocyclic pentadecaphenylene incorporates fullerene C60 in its cavity to afford fibrous 2 : 1 and 1 : 1 sandwich complexes.
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Affiliation(s)
- M. Jalilur Rahman
- Department of Chemistry
- Graduate School of Science and Engineering
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hideyuki Shimizu
- Department of Chemistry
- Graduate School of Science and Engineering
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Masashi Hasegawa
- Department of Chemistry
- School of Science
- Kitasato University
- Sagamihara
- Japan
| | - Masahiko Iyoda
- Department of Chemistry
- Graduate School of Science and Engineering
- Tokyo Metropolitan University
- Hachioji
- Japan
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