101
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Zohreband Z, Adeli M, Zebardasti A. Self-healable and flexible supramolecular gelatin/MoS 2 hydrogels with molecular recognition properties. Int J Biol Macromol 2021; 182:2048-2055. [PMID: 34087295 DOI: 10.1016/j.ijbiomac.2021.05.106] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/11/2021] [Accepted: 05/15/2021] [Indexed: 11/28/2022]
Abstract
Two-dimensional MoS2 is emerging as a unique platform for a wide range of biomedical applications including extracellular matrix mimics, drug delivery systems and antimicrobial agents. However, low processability and nonspecific interactions at biointerfaces are serious challenges that hamper the biomedical applications of this nanomaterial. Herein, we show how specific interactions between MoS2 and a gelatin matrix results in a biomimetic hydrogel with the self-healing and molecular recognition properties. β-Cyclodextrin was conjugated to the surface of freshly exfoliated MoS2 through a one pot nucleophilic substitution reaction and the obtained cyclodextrin-functionalized MoS2 was used to construct an injectable, self-healable and flexible supramolecular hydrogel upon host-guest interactions with adamantane-modified gelatin matrix. Incorporation of almost 1 wt% of CDMoS2 into gelatin matrix with 1cm2 cross-section resulted in a hydrogel that was able to tolerate one hundred grams. Also, storage modulus (G'), loss modulus (G″) of the obtained hydrogel was 10 and 25 times higher than that for the neat gelatin, respectively. Due to its self-healing, molecular recognition and mechanical properties as well as its flexibility, injectability, and processability, MoS2gel is a promising candidate for a wide range of future biomedical applications including extracellular matrix mimics and tissue engineering.
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Affiliation(s)
- Zeinab Zohreband
- Department of Chemistry, Lorestan University, Khorramabad, Lorestan 68151-44316, Iran
| | - Mohsen Adeli
- Department of Chemistry, Lorestan University, Khorramabad, Lorestan 68151-44316, Iran.
| | - Abedin Zebardasti
- Department of Chemistry, Lorestan University, Khorramabad, Lorestan 68151-44316, Iran.
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102
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Dannenhoffer AJ, Sai H, Harutyunyan B, Narayanan A, Powers-Riggs NE, Edelbrock AN, Passarelli JV, Weigand SJ, Wasielewski MR, Bedzyk MJ, Palmer LC, Stupp SI. Growth of Extra-Large Chromophore Supramolecular Polymers for Enhanced Hydrogen Production. NANO LETTERS 2021; 21:3745-3752. [PMID: 33877843 DOI: 10.1021/acs.nanolett.0c05024] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The control of morphology in bioinspired chromophore assemblies is key to the rational design of functional materials for light harvesting. We investigate here morphological changes in perylene monoimide chromophore assemblies during thermal annealing in aqueous environments of high ionic strength to screen electrostatic repulsion. We found that annealing under these conditions leads to the growth of extra-large ribbon-shaped crystalline supramolecular polymers of widths from about 100 nm to several micrometers and lengths from 1 to 10 μm while still maintaining a unimolecular thickness. This growth process was monitored by variable-temperature absorbance spectroscopy, synchrotron X-ray scattering, and confocal microscopy. The extra-large single-crystal-like supramolecular polymers are highly porogenic, thus creating loosely packed hydrogel scaffolds that showed greatly enhanced photocatalytic hydrogen production with turnover numbers as high as 13 500 over ∼110 h compared to 7500 when smaller polymers are used. Our results indicate great functional opportunities in thermally and pathway-controlled supramolecular polymerization.
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Affiliation(s)
- Adam J Dannenhoffer
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Hiroaki Sai
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
- Center for Bio-Inspired Energy Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Boris Harutyunyan
- Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ashwin Narayanan
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Natalia E Powers-Riggs
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Alexandra N Edelbrock
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - James V Passarelli
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Steven J Weigand
- Dow-Northwestern-DuPont Collaborative Access Team Synchrotron Research Center, Northwestern University, 9700 South Cass Avenue, Argonne, Illinois 60439 United States
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael J Bedzyk
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
- Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Liam C Palmer
- Center for Bio-Inspired Energy Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, United States
| | - Samuel I Stupp
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
- Center for Bio-Inspired Energy Science, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Medicine, Northwestern University, 676 North Saint Clair, Chicago, Illinois 60611, United States
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Chicago, Illinois 60611, United States
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103
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Gui M, Han Y, Zhong H, Liao R, Wang F. Investigation of the Amide Linkages on Cooperative Supramolecular Polymerization of Organoplatinum(II) Complexes. Molecules 2021; 26:2832. [PMID: 34068830 PMCID: PMC8126204 DOI: 10.3390/molecules26092832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 11/29/2022] Open
Abstract
Cooperative supramolecular polymerization of π-conjugated compounds into one-dimensional nanostructures has received tremendous attentions in recent years. It is commonly achieved by incorporating amide linkages into the monomeric structures, which provide hydrogen bonds for intermolecular non-covalent complexation. Herein, the effect of amide linkages is elaborately studied, by comparing supramolecular polymerization behaviors of two structurally similar monomers with the same platinum(II) acetylide cores. As compared to the N-phenyl benzamide linkages, N-[(1S)-1-phenylethyl] benzamide linkages give rise to effective chirality transfer behaviors due to the closer distances between the chiral units and the platinum(II) acetylide core. They also provide stronger intermolecular hydrogen bonding strength, which consequently brings higher thermo-stability and enhanced gelation capability for the resulting supramolecular polymers. Supramolecular polymerization is further strengthened by varying the monomers from monotopic to ditopic structures. Hence, with the judicious modulation of structural parameters, the current study opens up new avenues for the rational design of supramolecular polymeric systems.
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Affiliation(s)
| | | | | | - Rui Liao
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; (M.G.); (Y.H.); (H.Z.)
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; (M.G.); (Y.H.); (H.Z.)
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104
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Picini F, Schneider S, Gavat O, Vargas Jentzsch A, Tan J, Maaloum M, Strub JM, Tokunaga S, Lehn JM, Moulin E, Giuseppone N. Supramolecular Polymerization of Triarylamine-Based Macrocycles into Electroactive Nanotubes. J Am Chem Soc 2021; 143:6498-6504. [PMID: 33834779 DOI: 10.1021/jacs.1c00623] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A S6-symmetric triarylamine-based macrocycle (i.e., hexaaza[16]paracyclophane), decorated with six lateral amide functions, is synthesized by a convergent and modular strategy. This macrocycle is shown to undergo supramolecular polymerization in o-dichlorobenzene, and its nanotubular structure is elucidated by a combination of spectroscopy and microscopy techniques, together with X-ray scattering and molecular modeling. Upon sequential oxidation, a spectroelectrochemical analysis of the supramolecular polymer suggests an extended electronic delocalization of charge carriers both within the macrocycles (through bond) and between the macrocycles along the stacking direction (through space).
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Affiliation(s)
- Flavio Picini
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France
| | - Susanne Schneider
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France.,Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Odile Gavat
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France
| | - Andreas Vargas Jentzsch
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France
| | - Junjun Tan
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France
| | - Mounir Maaloum
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France
| | - Jean-Marc Strub
- LSMBO, Institut Pluridisciplinaire Hubert Curien, CNRS UMR7178, Université de Strasbourg, 67000 Strasbourg, France
| | - Shoichi Tokunaga
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France.,Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Emilie Moulin
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France
| | - Nicolas Giuseppone
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, 67000 Strasbourg, France
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105
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An investigation on MIL-101 Fe/PANI/Pd nanohybrid as a novel photocatalyst based on MIL-101(Fe) metal–organic frameworks removing methylene blue dye. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130007] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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106
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Raimondo M, Calabrese E, Binder WH, Michael P, Rana S, Guadagno L. Tunneling Atomic Force Microscopy Analysis of Supramolecular Self-Responsive Nanocomposites. Polymers (Basel) 2021; 13:1401. [PMID: 33926010 PMCID: PMC8123594 DOI: 10.3390/polym13091401] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/10/2021] [Accepted: 04/22/2021] [Indexed: 11/26/2022] Open
Abstract
A big step forward for composite application in the sector of structural materials is given by the use of Multi-Wall Carbon Nanotubes (MWCNTs) functionalized with hydrogen bonding moieties, such as barbiturate and thymine, to activate self-healing mechanisms and integrate additional functionalities. These materials with multiple healing properties at the same damaged site, imparted by hydrogen bonds, will also have the potential to improve material reliability, extend the service life, reduce replacement costs, and improve product safety. This revolutionary approach is obtained by integrating the non-covalent interactions coupled with the conventional covalent approach used to cross-link the polymer. The objective of this work is to characterize rubber-toughened supramolecular self-healing epoxy formulations based on unfunctionalized and functionalized MWCNTs using Tunneling Atomic Force Microscopy (TUNA). This advanced technique clearly shows the effect produced by the hydrogen bonding moieties acting as reversible healing elements by their simultaneous donor and acceptor character, and covalently linked to MWCNTs to originate self-healing nanocomposites. In particular, TUNA proved to be very effective for the morphology study of both the unfunctionalized and functionalized carbon nanotube-based conductive networks, thus providing useful insights aimed at understanding the influence of the intrinsic nature of the nanocharge on the final properties of the multifunctional composites.
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Affiliation(s)
- Marialuigia Raimondo
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy; (E.C.); (L.G.)
| | - Elisa Calabrese
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy; (E.C.); (L.G.)
| | - Wolfgang H. Binder
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle, Germany; (W.H.B.); (P.M.)
| | - Philipp Michael
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle, Germany; (W.H.B.); (P.M.)
| | - Sravendra Rana
- Department of Chemistry, University of Petroleum and Energy Studies (UPES), Dehradun 248007, India;
| | - Liberata Guadagno
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy; (E.C.); (L.G.)
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107
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Qu P, Kuepfert M, Ahmed E, Liu F, Weck M. Cross‐Linked Polymeric Micelles as Catalytic Nanoreactors. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100013] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Peiyuan Qu
- Molecular Design Institute and Department of Chemistry New York University 100 Washington Square East New York, NY 10003 USA
| | - Michael Kuepfert
- Molecular Design Institute and Department of Chemistry New York University 100 Washington Square East New York, NY 10003 USA
| | - Eman Ahmed
- Molecular Design Institute and Department of Chemistry New York University 100 Washington Square East New York, NY 10003 USA
| | - Fangbei Liu
- Molecular Design Institute and Department of Chemistry New York University 100 Washington Square East New York, NY 10003 USA
| | - Marcus Weck
- Molecular Design Institute and Department of Chemistry New York University 100 Washington Square East New York, NY 10003 USA
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108
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Castillo-Vallés M, Romero P, Sebastián V, Ros MB. Microfluidics for the rapid and controlled preparation of organic nanotubes of bent-core based dendrimers. NANOSCALE ADVANCES 2021; 3:1682-1689. [PMID: 36132558 PMCID: PMC9418585 DOI: 10.1039/d0na00744g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 01/05/2021] [Indexed: 06/15/2023]
Abstract
Recently, bent-core molecules have emerged as excellent building blocks for the obtaining of nanostructures in solvents. Herein, we report the use of a coaxial microfluidic system as a promising tool to control the self-assembly of non-conventional bent-core amphiphiles. Moreover, a TEM study to comprehend the hierarchical self-assembly process in solution was carried out. The proposed tool provides both a cost-effective platform to save hard-to-synthesise reagents and a rapid method to screen a plethora of different parameters, i.e., THF/water ratio, residence time, concentration of the amphiphile, temperature and pH. The experiments allowed to test for the first time the suitability of microfluidics for the self-assembly of bent-core molecules, as well as the study of a range of conditions to control the assembly of different nanostructures in a rapid and controlled manner. Additionally, organic nanostructures were combined with gold nanoparticles to prepare nanocomposites with enhanced properties. Both organic and hybrid nanostructures were also obtained in the solid state. These results may inspire scientists working on supramolecular chemistry and bent-core molecules expanding the scope of microfluidic systems for the self-assembly of other low-molecular-weight compounds.
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Affiliation(s)
- Martín Castillo-Vallés
- Department of Organic Chemistry, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
| | - Pilar Romero
- Department of Organic Chemistry, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
| | - Víctor Sebastián
- Department of Chemical Engineering and Environmental Technology, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN 28029-Madrid Spain
| | - M Blanca Ros
- Department of Organic Chemistry, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
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109
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Tarach P, Janaszewska A. Recent Advances in Preclinical Research Using PAMAM Dendrimers for Cancer Gene Therapy. Int J Mol Sci 2021; 22:2912. [PMID: 33805602 PMCID: PMC7999260 DOI: 10.3390/ijms22062912] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/08/2021] [Accepted: 03/11/2021] [Indexed: 12/16/2022] Open
Abstract
Carriers of genetic material are divided into vectors of viral and non-viral origin. Viral carriers are already successfully used in experimental gene therapies, but despite advantages such as their high transfection efficiency and the wide knowledge of their practical potential, the remaining disadvantages, namely, their low capacity and complex manufacturing process, based on biological systems, are major limitations prior to their broad implementation in the clinical setting. The application of non-viral carriers in gene therapy is one of the available approaches. Poly(amidoamine) (PAMAM) dendrimers are repetitively branched, three-dimensional molecules, made of amide and amine subunits, possessing unique physiochemical properties. Surface and internal modifications improve their physicochemical properties, enabling the increase in cellular specificity and transfection efficiency and a reduction in cytotoxicity toward healthy cells. During the last 10 years of research on PAMAM dendrimers, three modification strategies have commonly been used: (1) surface modification with functional groups; (2) hybrid vector formation; (3) creation of supramolecular self-assemblies. This review describes and summarizes recent studies exploring the development of PAMAM dendrimers in anticancer gene therapies, evaluating the advantages and disadvantages of the modification approaches and the nanomedicine regulatory issues preventing their translation into the clinical setting, and highlighting important areas for further development and possible steps that seem promising in terms of development of PAMAM as a carrier of genetic material.
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MESH Headings
- Biocompatible Materials/administration & dosage
- Biocompatible Materials/chemical synthesis
- Dendrimers/administration & dosage
- Dendrimers/chemical synthesis
- Gene Expression Regulation, Neoplastic
- Gene Transfer Techniques
- Genetic Therapy/methods
- Government Regulation
- Humans
- MicroRNAs/administration & dosage
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Nanomedicine/legislation & jurisprudence
- Nanomedicine/methods
- Nanoparticles/administration & dosage
- Nanoparticles/chemistry
- Neoplasm Proteins/antagonists & inhibitors
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Neoplasms/genetics
- Neoplasms/metabolism
- Neoplasms/pathology
- Neoplasms/therapy
- Oligonucleotides, Antisense/administration & dosage
- Oligonucleotides, Antisense/genetics
- Oligonucleotides, Antisense/metabolism
- Plasmids/administration & dosage
- Plasmids/chemistry
- Plasmids/metabolism
- RNA, Messenger/administration & dosage
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Small Interfering/administration & dosage
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Surface Properties
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Affiliation(s)
- Piotr Tarach
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland;
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110
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Raynal M, Li Y, Troufflard C, Przybylski C, Gontard G, Maistriaux T, Idé J, Lazzaroni R, Bouteiller L, Brocorens P. Experimental and computational diagnosis of the fluxional nature of a benzene-1,3,5-tricarboxamide-based hydrogen-bonded dimer. Phys Chem Chem Phys 2021; 23:5207-5221. [PMID: 33625418 DOI: 10.1039/d0cp06128j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Precise characterization of the hydrogen bond network present in discrete self-assemblies of benzene-1,3,5-tricarboxamide monomers derived from amino-esters (ester BTAs) is crucial for the construction of elaborated functional co-assemblies. For all ester BTA dimeric structures previously reported, ester carbonyls in the side chain acted as hydrogen bond acceptors, yielding well-defined dimers stabilized by six hydrogen bonds. The ester BTA monomer derived from glycine (BTA Gly) shows a markedly different self-assembly behaviour. We report herein a combined experimental and computational investigation aimed at determining the nature of the dimeric species formed by BTA Gly. Two distinct dimeric structures were characterized by single-crystal X-ray diffraction measurements. Likewise, a range of spectroscopic and scattering techniques as well as molecular modelling were employed to diagnose the nature of dynamic dimeric structures in toluene. Our results unambiguously establish that both ester and amide carbonyls are involved in the hydrogen bond network of the discrete dimeric species formed by BTA Gly. The participation of roughly 4.5 ester carbonyls and 1.5 amide carbonyls per dimer as determined by FT-IR spectroscopy implies that several conformations coexist in solution. Moreover, NMR analysis and modelling data reveal rapid interconversion between these different conformers leading to a symmetric structure on the NMR timescale. Rapid hydrogen bond shuffling between conformers having three (three), two (four), one (five) and zero (six) amide carbonyl groups (ester carbonyl groups, respectively) as hydrogen bond acceptors is proposed to explain the magnetic equivalence of the amide N-H on the NMR timescale. When compared to other ester BTA derivatives in which only ester carbonyls act as hydrogen bond acceptors, the fluxional behaviour of the hydrogen-bonded dimers of BTA Gly likely originates from a larger range of energetically favorable conformations accessible through rotation of the BTA side chains.
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Affiliation(s)
- M Raynal
- Sorbonne Université, CNRS, IPCM, UMR 8232, 4 Place Jussieu, 75252 Paris Cedex 05, France.
| | - Y Li
- Sorbonne Université, CNRS, IPCM, UMR 8232, 4 Place Jussieu, 75252 Paris Cedex 05, France.
| | - C Troufflard
- Sorbonne Université, CNRS, IPCM, UMR 8232, 4 Place Jussieu, 75252 Paris Cedex 05, France.
| | - C Przybylski
- Sorbonne Université, CNRS, IPCM, UMR 8232, 4 Place Jussieu, 75252 Paris Cedex 05, France.
| | - G Gontard
- Sorbonne Université, CNRS, IPCM, UMR 8232, 4 Place Jussieu, 75252 Paris Cedex 05, France.
| | - T Maistriaux
- Service de Chimie des Matériaux Nouveaux, Institut de Recherche sur les Matériaux, Université de Mons, Place du Parc, 20, B-7000, Mons, Belgium.
| | - J Idé
- Service de Chimie des Matériaux Nouveaux, Institut de Recherche sur les Matériaux, Université de Mons, Place du Parc, 20, B-7000, Mons, Belgium.
| | - R Lazzaroni
- Service de Chimie des Matériaux Nouveaux, Institut de Recherche sur les Matériaux, Université de Mons, Place du Parc, 20, B-7000, Mons, Belgium.
| | - L Bouteiller
- Sorbonne Université, CNRS, IPCM, UMR 8232, 4 Place Jussieu, 75252 Paris Cedex 05, France.
| | - P Brocorens
- Service de Chimie des Matériaux Nouveaux, Institut de Recherche sur les Matériaux, Université de Mons, Place du Parc, 20, B-7000, Mons, Belgium.
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111
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Kei P, Howell MT, Chavez CA, Mai JC, Do C, Hong K, Nesterov EE. Kinetically Controlled Formation of Semi-crystalline Conjugated Polymer Nanostructures. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Kei
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Mitchell T. Howell
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United States
| | - Carlos A. Chavez
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Joseph C. Mai
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Changwoo Do
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Kunlun Hong
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Evgueni E. Nesterov
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United States
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112
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Zhang S, Cheng L, Chen C, Li J, Li X, Zhang M, Cheng F, Xiao X, Deng K, Zeng Q. Controlled Construction of an Exquisite Three-Component Co-assembly Supramolecular Structure at the Liquid-Solid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2153-2160. [PMID: 33527825 DOI: 10.1021/acs.langmuir.0c03387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A three-component supramolecular co-assembly structure formed at the liquid-solid interface by employing a shape-persistent π-conjugated macrocycle (16mer) and two guest molecules (COR and C60) is demonstrated. Scanning tunneling microscopy (STM) observations revealed that 16mer can serve as a versatile host molecule that can co-assemble with both COR and C60 guest molecules to form stable two-component structures, where the COR guest molecule filled in the gap between the side chains of adjacent 16mer molecules, and the C60 guest molecule entered the inner cavity of 16mer. It was found that the adding sequence of COR and C60 guest molecules is crucial to the resulting co-adsorption structure in the three-component system. To obtain the intriguing 16mer-COR-C60 three-component co-assembly structure, the 16mer and COR two-component co-assembly structure should first be constructed on a HOPG surface, followed by addition of C60. Based on the analysis of the STM results and the density functional theory (DFT) calculations, the formation mechanism of the assembled structures was revealed.
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Affiliation(s)
- Siqi Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Linxiu Cheng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Chen Chen
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Jianqiao Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Xiaokang Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Min Zhang
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Faliang Cheng
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Xunwen Xiao
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, P. R. China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
- Center of Materials Science and Optoelectonics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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113
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Mohamed WAA, Handal HT, Ibrahem IA, Galal HR, Mousa HA, Labib AA. Recycling for solar photocatalytic activity of Dianix blue dye and real industrial wastewater treatment process by zinc oxide quantum dots synthesized by solvothermal method. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:123962. [PMID: 33065500 DOI: 10.1016/j.jhazmat.2020.123962] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
Solar photocatalytic activity of zinc oxide quantum dots (ZOQDs) was investigated and two samples of ZOQDs were synthesized by solvothermal method and characterized using different spectroscopic techniques. Crystal and morphological properties were obtained from XRD and HRTEM showed the purity, high crystallinity single phase and the elongated shape of prepared quantum dots. The measured crystallite size of the S1 and S2 samples is 8.4 and 9.6 nm respectively. The results of BET analysis and the optical properties of the samples shown that the first sample have larger values for both the specific surface area and band gap energy. Estimation of the photocatalytic performance indicated that the first sample give the best degradation rate of the synthetic Dianix Blue dye (DB) dye (2.47 × 10-2 s-1). Likewise, in the photo-oxidation of coumarin, the sample with the smallest particle size achieves the highest by 20% fluorescence rate than the largest particle size sample. In addition, the work included a study of the mineralization and recycling efficiency of industrial wastewater as a study case in the presence of different doses of ZOQDs by sun light for a one year and this evaluation done according to Egyptian allowed COD limit according to local environmental ministry law.
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Affiliation(s)
- Walied A A Mohamed
- Photochemistry and Nanomaterials Lab, Inorganic Chemistry Department, National Research Centre, Cairo 12622, Egypt.
| | - Hala T Handal
- Inorganic Chemistry Department, National Research Centre, Cairo, Egypt.
| | - Ibrahem A Ibrahem
- Analytical and Inorganic Chemistry Department, Al Azhar University, Cairo, Egypt.
| | - Hoda R Galal
- Photochemistry and Nanomaterials Lab, Inorganic Chemistry Department, National Research Centre, Cairo 12622, Egypt.
| | - Hanan A Mousa
- Inorganic Chemistry Department, National Research Centre, Cairo, Egypt.
| | - Ammar A Labib
- Photospectroscopy Lab, Inorganic Chemistry Department, National Research Centre, Cairo, Egypt.
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114
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Gokula RP, Mahato J, Tripathi A, Singh HB, Chowdhury A. Self-Assembly of Nicotinic Acid-Conjugated Selenopeptides into Mesotubes. ACS APPLIED BIO MATERIALS 2021; 4:1912-1919. [PMID: 35014460 DOI: 10.1021/acsabm.0c01551] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The study of controlling the morphology for designing advanced supramolecular architectures by tuning the molecular motif at the elemental level has been rarely carried out. Here, we report the synthesis of a nicotinic acid-conjugated selenopeptide, which induced the formation of an unbranched mesoscale elongated tubular morphology. We rationally designed two additional peptides to find out the decisive role played by the nitrogen atom (in nicotinic acid) and selenium (in the peptide backbone) toward the formation of the mesotube. We found that the peptide, devoid of nitrogen, forms a fibrillar structure, whereas the peptide without selenium self-assembled into a cylindrical filled rodlike morphology. Here, we report an entirely different class of peptide inspired from the selenopeptide chemistry that forms a tubular structure and unambiguously establish that both nicotinic acid and selenium are essential toward the formation of such mesotubes.
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Affiliation(s)
- Ram P Gokula
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Jaladhar Mahato
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Abhishek Tripathi
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Harkesh B Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Arindam Chowdhury
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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115
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Abstract
A field theoretic representation of the classical partition function is derived for a system composed of a mixture of anisotropic and isotropic mobile charges that interact via long range Coulomb and short range nematic interactions. The field theory is then solved on a saddle-point approximation level, leading to a coupled system of Poisson–Boltzmann and Maier–Saupe equations. Explicit solutions are finally obtained for a rod-like counterion-only system in proximity to a charged planar wall. The nematic order parameter profile, the counterion density profile and the electrostatic potential profile are interpreted within the framework of a nematic–isotropic wetting phase with a Donnan potential difference.
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116
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Yin H, Takada K, Kumar A, Hirayama T, Kaneko T. Synthesis and solvent-controlled self-assembly of diketopiperazine-based polyamides from aspartame. RSC Adv 2021; 11:5938-5946. [PMID: 35423151 PMCID: PMC8694841 DOI: 10.1039/d0ra10086b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/28/2021] [Indexed: 02/02/2023] Open
Abstract
An aspartame-based AB-type diketopiperazine monomer, cyclo(l-aspartyl-4-amino-l-phenylalanyl) (ADKP), was synthesized and subsequently utilized in the polycondensation of homo-polyamides with high molecular weights. By using various amino acids, dicarboxylic acids, and diamines, random DKP-based copolymers were also synthesized. The self-assembly properties of ADKP and poly(cyclo(l-aspartyl-4-amino-l-phenylalanyl)) (PA1) were studied via the solvent displacement method. Notably, PA1 self-assembled into particles with various morphologies in different solvent systems, such as irregular networks, ellipsoids, and hollow particles. The morphological transformation was also confirmed by dropping acetone and toluene onto the PA1 particles. Furthermore, infrared spectra and Hansen solubility parameters of PA1 and different solvents revealed the particle formation mechanism, which provided more insights into the relationship between the morphology and strength of the hydrogen bonding of each solvent. Diketopiperazine-based polyamides have been synthesized from aspartame, and could self-assemble into particles with various morphologies in different solvents.![]()
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Affiliation(s)
- Hongrong Yin
- Energy and Environment Area, Japan Advanced Institute of Science and Technology 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Kenji Takada
- Energy and Environment Area, Japan Advanced Institute of Science and Technology 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Amit Kumar
- Energy and Environment Area, Japan Advanced Institute of Science and Technology 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
| | - Thawinda Hirayama
- Department of Chemistry, Faculty of Science, Chulalongkorn University 254 Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Tatsuo Kaneko
- Energy and Environment Area, Japan Advanced Institute of Science and Technology 1-1 Asahidai Nomi Ishikawa 923-1292 Japan
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117
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Orvay F, Cerdá J, Rotger C, Ortí E, Aragó J, Costa A, Soberats B. Influence of the Z/E Isomerism on the Pathway Complexity of a Squaramide-Based Macrocycle. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006133. [PMID: 33448095 DOI: 10.1002/smll.202006133] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/25/2020] [Indexed: 05/25/2023]
Abstract
The rising interest on pathway complexity in supramolecular polymerization has prompted the finding of novel monomer designs able to stabilize kinetically trapped species and generate supramolecular polymorphs. In the present work, the exploitation of the Z/E (geometrical) isomerism of squaramide (SQ) units to produce various self-assembled isoforms and complex supramolecular polymerization pathways in methylcyclohexane/CHCl3 mixtures is reported for the first time. This is achieved by using a new bissquaramidic macrocycle (MSq) that self-assembles into two markedly different thermodynamic aggregates, AggA (discrete cyclic structures) and AggB (fibrillar structures), depending on the solvent composition and concentration. Remarkably, UV-vis, 1 H NMR, and FT-IR experiments together with quantum-chemical calculations indicate that these two distinct aggregates are formed via two different hydrogen bonding patterns (side-to-side in AggA and head-to-tail in AggB) due to different conformations in the SQ units (Z,E in AggA and Z,Z in AggB). The ability of MSq to supramolecularly polymerize into two distinct aggregates is utilized to induce the kinetic-to-thermodynamic transformation from AggA to AggB, which occurs via an on-pathway mechanism. It is believed that this system provides new insights for the design of potential supramolecular polymorphic materials by using squaramide units.
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Affiliation(s)
- Francisca Orvay
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
| | - Jesús Cerdá
- Instituto de Ciencia Molecular, Universidad de Valencia, Paterna, 46980, Spain
| | - Carmen Rotger
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
| | - Enrique Ortí
- Instituto de Ciencia Molecular, Universidad de Valencia, Paterna, 46980, Spain
| | - Juan Aragó
- Instituto de Ciencia Molecular, Universidad de Valencia, Paterna, 46980, Spain
| | - Antonio Costa
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
| | - Bartolome Soberats
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa, Km. 7.5, Palma de Mallorca, 07122, Spain
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118
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Zhou J, Rao L, Yu G, Cook TR, Chen X, Huang F. Supramolecular cancer nanotheranostics. Chem Soc Rev 2021; 50:2839-2891. [PMID: 33524093 DOI: 10.1039/d0cs00011f] [Citation(s) in RCA: 213] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Among the many challenges in medicine, the treatment and cure of cancer remains an outstanding goal given the complexity and diversity of the disease. Nanotheranostics, the integration of therapy and diagnosis in nanoformulations, is the next generation of personalized medicine to meet the challenges in precise cancer diagnosis, rational management and effective therapy, aiming to significantly increase the survival rate and improve the life quality of cancer patients. Different from most conventional platforms with unsatisfactory theranostic capabilities, supramolecular cancer nanotheranostics have unparalleled advantages in early-stage diagnosis and personal therapy, showing promising potential in clinical translations and applications. In this review, we summarize the progress of supramolecular cancer nanotheranostics and provide guidance for designing new targeted supramolecular theranostic agents. Based on extensive state-of-the-art research, our review will provide the existing and new researchers a foundation from which to advance supramolecular cancer nanotheranostics and promote translationally clinical applications.
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Affiliation(s)
- Jiong Zhou
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.
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119
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Gao Y, Zhao K, Yu X, Li Z, Wu T, Zhang C, Du F, Hu J. Multiple modulations of supramolecular assemblies from a natural triterpenoid-tailored bipyridinium amphiphile. J Colloid Interface Sci 2021; 584:92-102. [DOI: 10.1016/j.jcis.2020.09.125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/21/2020] [Accepted: 09/28/2020] [Indexed: 12/16/2022]
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120
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Chibh S, Mishra J, Kour A, Chauhan VS, Panda JJ. Recent advances in the fabrication and bio-medical applications of self-assembled dipeptide nanostructures. Nanomedicine (Lond) 2021; 16:139-163. [PMID: 33480272 DOI: 10.2217/nnm-2020-0314] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Molecular self-assembly is a widespread natural phenomenon and has inspired several researchers to synthesize a compendium of nano/microstructures with widespread applications. Biomolecules like proteins, peptides and lipids are used as building blocks to fabricate various nanomaterials. Supramolecular peptide self-assembly continue to play a significant role in forming diverse nanostructures with numerous biomedical applications; however, dipeptides offer distinctive supremacy in their ability to self-assemble and produce a variety of nanostructures. Though several reviews have articulated the progress in the field of longer peptides or polymers and their self-assembling behavior, there is a paucity of reviews or literature covering the emerging field of dipeptide-based nanostructures. In this review, our goal is to present the recent advancements in dipeptide-based nanostructures with their potential applications.
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Affiliation(s)
- Sonika Chibh
- Chemical Biology Unit, Institute of Nano Science & Technology, Mohali, Punjab 160062, India
| | - Jibanananda Mishra
- Cell and Molecular Biology Division, AAL Research & Solutions Pvt. Ltd., Panchkula, Haryana 134113, India
| | - Avneet Kour
- Chemical Biology Unit, Institute of Nano Science & Technology, Mohali, Punjab 160062, India
| | - Virander S Chauhan
- International Centre for Genetic Engineering & Biotechnology, New Delhi 110067, India
| | - Jiban J Panda
- Chemical Biology Unit, Institute of Nano Science & Technology, Mohali, Punjab 160062, India
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121
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Ikeda K, Horiuchi A, Yoshino M, Shimizu C, Nakao H, Nakano M. Amphipathic Peptide-Phospholipid Nanofibers: Phospholipid Specificity and Dependence on Concentration and Temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:713-721. [PMID: 33400880 DOI: 10.1021/acs.langmuir.0c02819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The design of nanoassemblies is an important part of the development of new materials for applications in nanomedicine and biosensors. In our previous study, cysteine substitution of the apolipoprotein A-I-derived peptide 18A at residue 11, 18A[A11C], bound to 1-palmitoyl-2-oleoylphosphatidylcholine to form fibrous aggregates at a lipid-to-peptide molar ratio of ≤2 and a fiber diameter of 10-20 nm. However, the mechanisms underlying the lipid-peptide interactions that enable nanofiber formation remain unclear. Here, we evaluated the phospholipid specificity, concentration dependence, and temperature dependence of the formation of 18A[A11C]-lipid nanofibers. Nanofibers were found to form in the presence of specific phospholipids and have a constant lipid/peptide stoichiometry of 1.2 ± 0.2. Moreover, an increase in the length of the acyl chain in phosphatidylcholines was found to increase the structural stability of the nanofibers. These results indicate that specific molecular interactions between peptides and both the headgroups and acyl chains of phospholipids are involved in nanofiber formation. Furthermore, the formation and disassembly of the nanofibers were reversibly controlled by changes in temperature and concentration. The results of the present study provide an insight into the creation of nanoassembling structures.
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Affiliation(s)
- Keisuke Ikeda
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Ayame Horiuchi
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Misa Yoshino
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Chinatsu Shimizu
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Hiroyuki Nakao
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Minoru Nakano
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
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122
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Impedimetric Microcystin-LR Aptasensor Prepared with Sulfonated Poly(2,5-dimethoxyaniline)–Silver Nanocomposite. Processes (Basel) 2021. [DOI: 10.3390/pr9010179] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This paper presents a novel impedimetric aptasensor for cyanobacterial microcystin-LR (L, l-leucine; R, l-arginine) (MC-LR) containing a 5′ thiolated 60-mer DNA aptamer (i.e., 5′-SH-(CH2)6GGCGCCAAACAGGACCACCATGACAATTACCCATACCACCTCATTATGCCCCATCT CCGC-3′). A nanocomposite electrode platform comprising biocompatible poly(2,5-dimethoxyaniline) (PDMA)-poly(vinylsulfonate) (PVS) and silver nanoparticle (Ag0) on a glassy carbon electrode (GCE), i.e., (GCE/PDMA–PVS–Ag0) was used in the biosensor development. Small-angle X-ray scattering (SAXS) spectroscopic analysis revealed that the PDMA–PVS–Ag0 nanocomposites were polydispersed and contained embedded Ag0. Electrochemical impedance spectroscopy (EIS) responses of the aptasensor gave a dynamic linear range (DLR) and limit of detection (LOD) values of 0.01–0.1 ng L−1 MC-LR and 0.003 ng L−1 MC-LR, respectively. The cross-reactivity studies, which was validated with enzyme-linked immunosorbent assay (ELISA), showed that the aptasensor possesses excellent selectivity for MC-LR.
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123
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Gila-Vilchez C, Mañas-Torres MC, González-Vera JA, Franco-Montalban F, Tamayo JA, Conejero-Lara F, Cuerva JM, Lopez-Lopez MT, Orte A, Álvarez de Cienfuegos L. Insights into the co-assemblies formed by different aromatic short-peptide amphiphiles. Polym Chem 2021. [DOI: 10.1039/d1py01366a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The mechanism of co-assembly of different aromatic dipeptides has been studied using a combination of microscopy and spectroscopy techniques. At an equimolar ratio, the kinetics of the process is favored giving rise to alternate copolymers.
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Affiliation(s)
- Cristina Gila-Vilchez
- Universidad de Granada, Departamento de Física Aplicada, Facultad de Ciencias, 18071 Granada, Spain
| | - Mari C. Mañas-Torres
- Universidad de Granada, Dpto de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ), 18071-Granada, Spain
| | - Juan A. González-Vera
- Universidad de Granada, Nanoscopy-UGR Laboratory. Dpto de FisicoQuímica, Facultad de Farmacia, UEQ, 18072-Granada, Spain
| | - Francisco Franco-Montalban
- Universidad de Granada, Dpto de Química Farmacéutica y Orgánica, Facultad de Farmacia, 18072-Granada, Spain
| | - Juan A. Tamayo
- Universidad de Granada, Dpto de Química Farmacéutica y Orgánica, Facultad de Farmacia, 18072-Granada, Spain
| | | | - Juan Manuel Cuerva
- Universidad de Granada, Dpto de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ), 18071-Granada, Spain
| | - Modesto T. Lopez-Lopez
- Universidad de Granada, Departamento de Física Aplicada, Facultad de Ciencias, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, Spain
| | - Angel Orte
- Universidad de Granada, Nanoscopy-UGR Laboratory. Dpto de FisicoQuímica, Facultad de Farmacia, UEQ, 18072-Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Universidad de Granada, Dpto de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ), 18071-Granada, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, Spain
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124
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Iqbal MJ, Li Z, Khan MA, Zhu Y, Hussain W, Su H, Qiu QM, Shoukat R, Li H. Studies on the structure and chirality of A-motif in adenosine monophosphate nucleotide metal coordination complexes. CrystEngComm 2021. [DOI: 10.1039/d1ce00276g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structure and chirality of A-motif.
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Affiliation(s)
- Muhammad Javed Iqbal
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Zhongkui Li
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Maroof Ahmad Khan
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Yanhong Zhu
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Wajid Hussain
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Hao Su
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Qi-Ming Qiu
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Rizwan Shoukat
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Hui Li
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
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125
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Vorobjova A, Tishkevich D, Shimanovich D, Zubar T, Astapovich K, Kozlovskiy A, Zdorovets M, Zhaludkevich A, Lyakhov D, Michels D, Vinnik D, Fedosyuk V, Trukhanov A. The influence of the synthesis conditions on the magnetic behaviour of the densely packed arrays of Ni nanowires in porous anodic alumina membranes. RSC Adv 2021; 11:3952-3962. [PMID: 35424352 PMCID: PMC8694122 DOI: 10.1039/d0ra07529a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 01/13/2021] [Indexed: 11/21/2022] Open
Abstract
The densely packed arrays of Ni nanowires of 70 nm diameter and 6–12 μm length were obtained via electrodeposition into porous alumina membranes (PAAMs) of 55–75 μm thickness.
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126
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Wang X, Qian S, Wang D, Wang C, Qin H, Peng L, Lu W, Zhang Y, Qing G. Self-assembly gel-based dynamic response system for specific recognition of N-acetylneuraminic acid. J Mater Chem B 2021; 9:4690-4699. [PMID: 34076032 DOI: 10.1039/d1tb00627d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Sialic acids located at the terminal end of glycans are densely attached to cell surfaces and play crucial and distinctive roles in a variety of physiological and pathological processes, such as neural development, cell-cell interactions, autoimmunity and cancers. However, due to the subtle structural differences of sialic acid species and the complicated composition of glycans, the precise recognition of sialylated glycans is difficult. Here, a fluorescent dynamic response system based on a pyrene-conjugated histidine (PyHis) supramolecular gel is proposed. Driven by π-π stacking and intermolecular hydrogen bonds, PyHis exhibits a strong self-assembly ability and forms stable gels. It is found that introduction of N-acetylneuraminic acid (a typical sialic acid) can prevent this self-assembly process, whereas other monosaccharides or sialic acid analogs have no significant effect on it. Interestingly, a sialylated glycan also has a remarkable inhibitory effect on the gel formation, which highlights the high selectivity of the gel dynamic response system. Analysis of the mechanism reveals that the sialic acid or sialylated glycan can interact closely with two PyHis molecules stacked together in the assemblies via hydrogen bonding interactions, thereby preventing the ordered accumulation of the gelators. It is worth noting that the high-efficiency sialic acid recognition effect is not observed at the single molecule level but at the supramolecular level, indicating the unique superiority of the supramolecular self-assembly system in biomolecular recognition and response. This work shows the promising prospects of using supramolecular gels in assembly engineering, regenerative medicine, tumour cell sorting and cancer diagnosis.
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Affiliation(s)
- Xue Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China and Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Shengxu Qian
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Dongdong Wang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Cunli Wang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Haijuan Qin
- Research Centre of Modern Analytical Technology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Lang Peng
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and College of Chemistry and Chemical Engineering, Wuhan Textile University, 1 Sunshine Road, Wuhan 430200, P. R. China
| | - Wenqi Lu
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Yahui Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Guangyan Qing
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. and College of Chemistry and Chemical Engineering, Wuhan Textile University, 1 Sunshine Road, Wuhan 430200, P. R. China
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127
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Abdollahi A, Roghani-Mamaqani H, Razavi B, Salami-Kalajahi M. Photoluminescent and Chromic Nanomaterials for Anticounterfeiting Technologies: Recent Advances and Future Challenges. ACS NANO 2020; 14:14417-14492. [PMID: 33079535 DOI: 10.1021/acsnano.0c07289] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Counterfeiting and inverse engineering of security and confidential documents, such as banknotes, passports, national cards, certificates, and valuable products, has significantly been increased, which is a major challenge for governments, companies, and customers. From recent global reports published in 2017, the counterfeiting market was evaluated to be $107.26 billion in 2016 and forecasted to reach $206.57 billion by 2021 at a compound annual growth rate of 14.0%. Development of anticounterfeiting and authentication technologies with multilevel securities is a powerful solution to overcome this challenge. Stimuli-chromic (photochromic, hydrochromic, and thermochromic) and photoluminescent (fluorescent and phosphorescent) compounds are the most significant and applicable materials for development of complex anticounterfeiting inks with a high-security level and fast authentication. Highly efficient anticounterfeiting and authentication technologies have been developed to reach high security and efficiency. Applicable materials for anticounterfeiting applications are generally based on photochromic and photoluminescent compounds, for which hydrochromic and thermochromic materials have extensively been used in recent decades. A wide range of materials, such as organic and inorganic metal complexes, polymer nanoparticles, quantum dots, polymer dots, carbon dots, upconverting nanoparticles, and supramolecular structures, could display all of these phenomena depending on their physical and chemical characteristics. The polymeric anticounterfeiting inks have recently received significant attention because of their high stability for printing on confidential documents. In addition, the printing technologies including hand-writing, stamping, inkjet printing, screen printing, and anticounterfeiting labels are discussed for introduction of the most efficient methods for application of different anticounterfeiting inks. This review would help scientists to design and develop the most applicable encryption, authentication, and anticounterfeiting technologies with high security, fast detection, and potential applications in security marking and information encryption on various substrates.
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Affiliation(s)
- Amin Abdollahi
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
| | - Hossein Roghani-Mamaqani
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, 51335-1996 Tabriz, Iran
| | - Bahareh Razavi
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
| | - Mehdi Salami-Kalajahi
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, 51335-1996 Tabriz, Iran
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128
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Ramakrishna TRB, Mathesh M, Liu Z, Zhang C, Du A, Liu J, Barrow CJ, Chen M, Biggs MJ, Yang W. Solvent Effect on Supramolecular Self-Assembly of Chlorophylls a on Chemically Reduced Graphene Oxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13575-13582. [PMID: 33085489 DOI: 10.1021/acs.langmuir.0c02370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Solvent plays an important role in the surface interaction of molecules. In this study, we use "chlorophyll a", an archetypical molecule, to investigate its supramolecular self-assembly with chemically reduced graphene oxide in three different types of solvents: polar protic, polar aprotic, and non-polar. It was observed that only a polar protic solvent that can donate protons facilitates the hydrogen bonding between chlorophyll a and chemically reduced graphene oxide nanosheets in a hybrid system. The formation of hydrogen bonds further initiates the other non-covalent interactions such as π-π stacking and hydrophobic interaction, which altogether play a key driving force for supramolecular self-assembly of chlorophylls on chemically reduced graphene oxides. The experimental results are strongly supported by density functional theory calculations, which show robust electron coupling between chlorophylls and chemically reduced graphene oxide.
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Affiliation(s)
| | - Motilal Mathesh
- School of Life and Environmental Science, Deakin University, Geelong, Victoria 3216, Australia
| | - Zhen Liu
- College of Materials Science and Engineering, Institute for Graphene Applied Technology Innovation, Qingdao University, Qingdao 266071, People's Republic of China
| | - Chunmei Zhang
- Institute of Modern Physics, School of Physics, Northwest University, Xi'an 710069, People's Republic of China
| | - Aijun Du
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Jingquan Liu
- College of Materials Science and Engineering, Institute for Graphene Applied Technology Innovation, Qingdao University, Qingdao 266071, People's Republic of China
| | - Colin J Barrow
- School of Life and Environmental Science, Deakin University, Geelong, Victoria 3216, Australia
| | - Min Chen
- School of Biological Science, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Mark J Biggs
- Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - Wenrong Yang
- School of Life and Environmental Science, Deakin University, Geelong, Victoria 3216, Australia
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129
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Geng W, Zheng Z, Guo D. Supramolecular design based activatable magnetic resonance imaging. VIEW 2020. [DOI: 10.1002/viw.20200059] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Wen‐Chao Geng
- College of Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento‐Organic Chemistry Nankai University Tianjin P. R. China
| | - Zhe Zheng
- College of Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento‐Organic Chemistry Nankai University Tianjin P. R. China
| | - Dong‐Sheng Guo
- College of Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento‐Organic Chemistry Nankai University Tianjin P. R. China
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130
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Fathalla M. Synthesis and characterization of a porphyrin-crown ether conjugate as a potential intermediate for drug delivery application. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424620500546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The development of synthetic strategies for functional building units plays a central role in supramolecular chemistry. Both porphyrin and crown ethers have attracted the attention of researchers worldwide owing to their unique properties. It is envisioned that the integration of the two molecules will result in hybrid materials with potential applications in many fields. In the present study, a new porphyrin derivative 3 appended with four 18-crown-6 (18C6) ether moieties was synthesized through the Suzuki-Miyaura coupling of boronic ester porphyrin 1 and 4-bromobenzo-18-crown-6 2 in 80% yield. Porphyrin 3 was fully characterized by 1H/[Formula: see text]C NMR spectroscopy and high resolution mass spectrometry. The tendency of the 18C6 to form host-guest complexes with ammonium cations was exploited to assemble cation responsive hybrid material of porphyrin 3 and ammonium immobilized mesoporous silica nanoparticles (MSNs). Furthermore, the potential application of the 3/MSNs conjugate as a cation-responsive drug delivery vehicle was investigated in solution by UV-vis and fluorescence spectroscopies.
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Affiliation(s)
- Maher Fathalla
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 170, Saudi Arabia
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131
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Deng Z, Liu S. Controlled drug delivery with nanoassemblies of redox-responsive prodrug and polyprodrug amphiphiles. J Control Release 2020; 326:276-296. [DOI: 10.1016/j.jconrel.2020.07.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 01/20/2023]
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132
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Senthilkumaran M, Saravanan C, Ashwin BCMA, Shanmugavelan P, Muthu Mareeswaran P, Prakash M. Inclusion induced water solubility and binding investigation of acenaphthene-1,2-dione with p-sulfonatocalix[4]arene. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01017-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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133
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Vaganova TA, Gatilov YV, Pishchur DP, Malykhin EV. Polyfluorinated hydroxy and carboxy benzenes as a new type of H-donors for self-assembly with 18-crown-6 ether: Synthesis, supramolecular structure and stability of co-crystals. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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134
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Amgoth C, Santhosh R, Malavath T, Singh A, Murali B, Tang G. Solvent‐Assisted [(Glycine)‐(MP‐SiO
2
NPs)] Aggregate for Drug Loading and Cancer Therapy. ChemistrySelect 2020. [DOI: 10.1002/slct.202001905] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chander Amgoth
- Department of Chemistry Zhejiang University Hangzhou 310028 China
| | | | - Tirupathi Malavath
- Department of Biochemistry and Molecular Biology Tel Aviv University Israel
| | - Avinash Singh
- Department of Humanities and Sciences MLR Institute of Technology Hyderabad 500043 India
| | - Banavoth Murali
- School of Chemistry University of Hyderabad Hyderabad 500046 India
| | - Guping Tang
- Department of Chemistry Zhejiang University Hangzhou 310028 China
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135
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Xu F, Pfeifer L, Stuart MCA, Leung FKC, Feringa BL. Multi-modal control over the assembly of a molecular motor bola-amphiphile in water. Chem Commun (Camb) 2020; 56:7451-7454. [PMID: 32495777 DOI: 10.1039/d0cc02177f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report multi-modal-control over the assembly behaviour of a first-generation molecular motor bola-amphiphile in water by light, pH and the choice of counter-ions. These findings open up opportunities for the development of materials that reconfigurate enabling complex functions in response to different stimuli.
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Affiliation(s)
- Fan Xu
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
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136
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Mostarac D, Sánchez PA, Kantorovich S. Characterisation of the magnetic response of nanoscale magnetic filaments in applied fields. NANOSCALE 2020; 12:13933-13947. [PMID: 32406897 DOI: 10.1039/d0nr01646b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Incorporating magnetic nanoparticles (MNPs) within permanently crosslinked polymer-like structures opens up the possibility for synthesis of complex, highly magneto-responsive systems. Among such structures are chains of prealigned magnetic (ferro- or super-paramagnetic) monomers, permanently crosslinked by means of macromolecules, which we refer to as magnetic filaments (MFs). In this paper, using molecular dynamics simulations, we encompass filament synthesis scenarios, with a compact set of easily tuneable computational models, where we consider two distinct crosslinking approaches, for both ferromagnetic and super-paramagnetic monomers. We characterise the equilibrium structure, correlations and magnetic properties of MFs in static magnetic fields. Calculations show that MFs with ferromagnetic MNPs in crosslinking scenarios where the dipole moment orientations are decoupled from the filament backbone, have similar properties to MFs with super-paramagnetic monomers. At the same time, magnetic properties of MFs with ferromagnetic MNPs are more dependent on the crosslinking approach than they are for ones with super-paramagnetic monomers. Our results show that, in a strong applied field, MFs with super-paramagnetic MNPs have similar magnetic properties to ferromagnetic ones, while exhibiting higher susceptibility in low fields. We find that MFs with super-paramagnetic MNPs have a tendency to bend the backbone locally rather than to fully stretch along the field. We explain this behaviour by supplementing Flory theory with an explicit dipole-dipole interaction potential, with which we can take in to account folded filament configurations. It turns out that the entropy gain obtained through bending compensates an insignificant loss in dipolar energy for the filament lengths considered in the manuscript.
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Affiliation(s)
| | - Pedro A Sánchez
- Ural Federal University, Ekaterinburg, Russia and Wolfgang Pauli Institute, Vienna, Austria
| | - Sofia Kantorovich
- University of Vienna, Vienna, Austria. and Ural Federal University, Ekaterinburg, Russia
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137
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Del Grosso E, Prins LJ, Ricci F. Transient DNA‐Based Nanostructures Controlled by Redox Inputs. Angew Chem Int Ed Engl 2020; 59:13238-13245. [DOI: 10.1002/anie.202002180] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/15/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Erica Del Grosso
- Department of Chemistry University of Rome Tor Vergata, Via della Ricerca Scientifica 00133 Rome Italy
| | - Leonard J. Prins
- Department of Chemical Sciences University of Padua Via Marzolo 1 35131 Padua Italy
| | - Francesco Ricci
- Department of Chemistry University of Rome Tor Vergata, Via della Ricerca Scientifica 00133 Rome Italy
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138
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Del Grosso E, Prins LJ, Ricci F. Transient DNA‐Based Nanostructures Controlled by Redox Inputs. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002180] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Erica Del Grosso
- Department of Chemistry University of Rome Tor Vergata, Via della Ricerca Scientifica 00133 Rome Italy
| | - Leonard J. Prins
- Department of Chemical Sciences University of Padua Via Marzolo 1 35131 Padua Italy
| | - Francesco Ricci
- Department of Chemistry University of Rome Tor Vergata, Via della Ricerca Scientifica 00133 Rome Italy
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139
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Han Y, Gao Z, Wang C, Zhong R, Wang F. Recent progress on supramolecular assembly of organoplatinum(II) complexes into long-range ordered nanostructures. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213300] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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140
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Ren H, Qiu XP, Shi Y, Yang P, Winnik FM. The Two Phase Transitions of Hydrophobically End-Capped Poly( N-isopropylacrylamide)s in Water. Macromolecules 2020; 53:5105-5115. [PMID: 32952216 PMCID: PMC7497654 DOI: 10.1021/acs.macromol.0c00487] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/25/2020] [Indexed: 01/03/2023]
Abstract
![]()
High-sensitivity
differential scanning calorimetry (HS-DSC) thermograms of aqueous
poly(N-isopropylacrylamide) (PNIPAM) solutions present
a sharp unimodal endotherm that signals the heat-induced dehydration/collapse
of the PNIPAM chain. Similarly, α,ω-di-n-octadecyl-PNIPAM (C18-PN-C18) aqueous solutions exhibit a unimodal
endotherm. In contrast, aqueous solutions of α,ω-hydrophobically
modified PNIPAMs with polycyclic terminal groups, such as pyrenylbutyl
(Py-PN-Py), adamantylethyl (Ad-PN-Ad), and azopyridine- (C12-PN-AzPy)
moieties, exhibit bimodal thermograms. The origin of the two transitions
was probed using microcalorimetry measurements, turbidity tests, variable
temperature 1H NMR (VT-NMR) spectroscopy, and 2-dimensional
NOESY experiments with solutions of polymers of molar mass (Mn) from 5 to 20 kDa and polymer concentrations
of 0.1 to 3.0 mg/mL. The analysis outcome led us to conclude that
the difference of the thermograms reflects the distinct self-assembly
structures of the polymers. C18-PN-C18 assembles in water in the form
of flower micelles held together by a core of tightly packed n-C18 chains. In contrast, polymers end-tagged with azopyridine,
pyrenylbutyl, or adamantylethyl form a loose core that allows chain
ends to escape from the micelles, to reinsert in them, or to dangle
in surrounding water. The predominant low temperature (T1) endotherm, which is insensitive to polymer concentration,
corresponds to the dehydration/collapse of PNIPAM chains within the
micelles, while the higher temperature (T2) endotherm is attributed to the dehydration of dangling chains and
intermicellar bridges. This study of the two phase transitions of
telechelic PNIPAM homopolymer highlights the rich variety of morphologies
attainable via responsive hydrophobically modified aqueous polymers
and may open the way to a variety of practical applications.
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Affiliation(s)
- Hao Ren
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Xing-Ping Qiu
- Department of Chemistry, University of Montreal, CP 6128 Succursale Centre Ville, Montreal, Quebec H3C 3J7, Canada
| | - Yan Shi
- School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Peng Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Françoise M Winnik
- Laboratory of Polymer Chemistry, Department of Chemistry, PB 55, University of Helsinki, Helsinki, FI00140 Finland.,International Center for Materials Nanoarchitectonics, National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan.,Department of Macromolecular Science, School of Graduate Studies, University of Osaka, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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141
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A periodic dodecagonal supertiling by self-assembly of star-shaped molecules in the liquid crystalline state. Commun Chem 2020; 3:70. [PMID: 36703439 PMCID: PMC9814142 DOI: 10.1038/s42004-020-0314-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 05/06/2020] [Indexed: 01/29/2023] Open
Abstract
Molecular tessellations are known in solid state systems and their formation is often induced or supported by a periodic surface lattice. Here we discover a complex tessellation on the 10 nm length scale, spontaneously formed in the highly dynamic liquid crystalline state. It is composed of overlapping dodecagonal supertiles combining prismatic cells with triangular and square cross sections. This complex honeycomb occurs between a triangular honeycomb at high and a square at low temperature, being opposite to the sequence expected for a thermal expansion of the side chains in the prismatic cells. Formation of the supertiles is supported by the segregation of alkyl chains with different length. The emergent behaviour of this complex soft matter structure is demonstrated, and intriguing connections between self-assembly on surfaces, in liquid crystals, and in block copolymers are drawn. Moreover, the tessellation represents a close approximant of the elusive columnar liquid quasicrystal with dodecagonal symmetry.
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142
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Mohamed WA, Ibrahem IA, El-Sayed A, Galal HR, Handal H, Mousa HA, Labib AA. Zinc oxide quantum dots for textile dyes and real industrial wastewater treatment: Solar photocatalytic activity, photoluminescence properties and recycling process. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.04.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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143
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VandenBerg MA, Sahoo JK, Zou L, McCarthy W, Webber MJ. Divergent Self-Assembly Pathways to Hierarchically Organized Networks of Isopeptide-Modified Discotics under Kinetic Control. ACS NANO 2020; 14:5491-5505. [PMID: 32297733 DOI: 10.1021/acsnano.9b09610] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Natural proteins traverse complex free energy landscapes to assemble into hierarchically organized structures, often through stimuli-directed kinetic pathways in response to relevant biological cues. Bioinspired strategies have sought to emulate the complexity, dynamicity, and modularity exhibited in these natural processes with synthetic analogues. However, these efforts are limited by many factors that complicate the rational design and predictable assembly of synthetic constructs, especially in aqueous environments. Herein, a model discotic amphiphile gelator is described that undergoes pathway-dependent structural maturation when exposed to varying application rates of a pH stimulus, investigated by electron microscopy, spectroscopy, and X-ray scattering techniques. Under the direction of a slowly changing pH stimulus, complex hierarchical assemblies result, characterized by mesoscale elongated "superstructure" bundles embedded in a percolated mesh of narrow nanofibers. In contrast, the assembly under a rapidly applied pH stimulus is characterized by homogeneous structures that are reminiscent of the superstructures arising from the more deliberate path, except with significantly reduced scale and concomitantly large increases in bulk rheological properties. This synthetic system bears resemblance to the pathway complexity and hierarchical ordering observed for native structures, such as collagen, and points to fundamental design principles that might be applied toward enhanced control of the properties of supramolecular self-assembly across length scales.
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Affiliation(s)
- Michael A VandenBerg
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jugal Kishore Sahoo
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Lei Zou
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - William McCarthy
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Matthew J Webber
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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144
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Cryo-Electron microscopy for the study of self-assembled poly(ionic liquid) nanoparticles and protein supramolecular structures. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04657-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
AbstractCryo-electron microscopy (cryo-EM) is a powerful structure determination technique that is well-suited to the study of protein and polymer self-assembly in solution. In contrast to conventional transmission electron microscopy (TEM) sample preparation, which often times involves drying and staining, the frozen-hydrated sample preparation allows the specimens to be kept and imaged in a state closest to their native one. Here, we give a short overview of the basic principles of Cryo-EM and review our results on applying it to the study of different protein and polymer self-assembled nanostructures. More specifically, we show how we have applied cryo-electron tomography (cryo-ET) to visualize the internal morphology of self-assembled poly(ionic liquid) nanoparticles and cryo-EM single particle analysis (SPA) to determine the three-dimensional (3D) structures of artificial protein microtubules.
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145
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Piccinini E, Ceolín M, Battaglini F, Azzaroni O. Mesostructured Electroactive Thin Films Through Layer-by-Layer Assembly of Redox Surfactants and Polyelectrolytes. Chempluschem 2020; 85:1616-1622. [PMID: 32432385 DOI: 10.1002/cplu.202000358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/09/2020] [Indexed: 12/17/2022]
Abstract
Electroactive thin films are an important element in the devices devoted to energy conversion, actuators, and molecular electronics, among others. Their build-up by the layer-by-layer technique is an attractive choice since a fine control over the thickness and composition can be achieved. However, most of the assemblies described in the literature show a lack of internal order, and their thicknesses change upon oxidation-state alterations. In this work, we describe the formation of layer-by-layer assemblies of redox surfactants and polyelectrolytes that leads to the construction of mesoscale organized electroactive films. In contrast to thin films prepared with traditional redox polymers, here, the redox surfactant does not only allow the control of the film meso-organization (from 2D hexagonal to circular hexagonal phases) but it also allows the control of the number and position of the redox centers. Finally, these films show high stability and a negligible structural deformation under redox-state changes.
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Affiliation(s)
- Esteban Piccinini
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), CONICET, Diagonal 113 y 64, 1900, La Plata, Argentina
| | - Marcelo Ceolín
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), CONICET, Diagonal 113 y 64, 1900, La Plata, Argentina
| | - Fernando Battaglini
- INQUIMAE (CONICET), Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos, Aires, Argentina
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), CONICET, Diagonal 113 y 64, 1900, La Plata, Argentina
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146
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Saroj S, Janni DS, Ummadi CR, Kannoth Manheri M. Functionalizable oxanorbornane-based head-group in the design of new Non-ionic amphiphiles and their drug delivery properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 112:110857. [PMID: 32409031 DOI: 10.1016/j.msec.2020.110857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/23/2019] [Accepted: 03/16/2020] [Indexed: 11/20/2022]
Abstract
A new group of non-ionic amphiphiles with short alkyl chains and functionalizable oxanorbornane-based head group for drug delivery application are presented. They can be prepared through a sequence that starts with cycloaddition of Boc-protected furfuryl amine with maleic anhydride and reduction of the resulting adduct with LiAlH4 to get a diol intermediate. Introduction of alkyl chains through these primary hydroxyl groups and subsequent head-group modification via cis-hydroxylation resulted in a number of new amphiphiles in good yields. They were characterized by various spectro-analytical techniques and then subjected to drug-delivery studies using ibuprofen as a model drug. Functionalization of the head group through the amine functionality was also done with an intention to improve lipid packing to get better drug-loading and release properties. Irrespective of the nature of groups attached through this amine unit, all amphiphiles with short alkyl chains were found to assemble into spherical aggregates when drop-casted from various organic solvents. The same assembly preference prevailed in their formulations containing lipid-cholesterol-drug in 1: 0.5:1 ratio as well, and these particles had diameters <300 nm. Apart from good drug-loading efficiencies, these amphiphiles exhibited controlled release properties and did not show any indication of toxicity when assayed against NIH3T3 cells. The formulation based on lipid having a phenylalanine unit on the head group (1.10c) turned out to be the best in this series which showed a loading efficiency of 57.6% with a controlled release of ~42% by end of 24 h. Because of efficient layering that is facilitated by hydrogen bonding involving well-directed hydroxyl groups on the head group, amphiphiles with alkyl chains as short as C5 are able to act as efficient drug delivery systems, which is one of the highlights of this work.
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Affiliation(s)
- Soumya Saroj
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Devi Sirisha Janni
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
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147
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Zhao YY, Yang JM, Jin XY, Cong H, Ge QM, Liu M, Tao Z. Recent Development of Supramolecular Sensors Constructed by Hybridization of Organic Macrocycles with Nanomaterials. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200214110110] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Macrocyclic compounds have attracted tremendous attention for their superior
performance in supramolecular recognition, catalysis, and host-guest interaction. With
these admirable properties, macrocyclic compounds were used as modifiers for enhancing
the sensitivity and selectivity of electrodes and optical sensors. The classic macrocyclic
compounds, including crown ethers, cyclodextrins, calixarenes, cucurbiturils, and pillararenes,
were employed as receptors for electrochemical and optical sensors to develop
new analytical methods with the wilder detection range, lower detection limit, and better
tolerance of interference. Macrocyclic molecules functionalized with nanomaterials, the
small entities with dimensions in the nanoscale, realized the versatility and diversification
of the nano-hybrid materials, which improved the capabilities of recognition and response
with the combining characteristics of two components. Herein, this review focused on the development in the
research field of hybridization of organic macrocycles with nanoparticles and their applications for chemosensors,
aiming at both existing researchers in the field and who would like to enter into the research.
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Affiliation(s)
- Yong-Yi Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Jian-Mei Yang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Xian-Yi Jin
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Hang Cong
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Qing-Mei Ge
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Mao Liu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
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148
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The impact of magnetic field on the conformations of supracolloidal polymer-like structures with super-paramagnetic monomers. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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149
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Gruschwitz FV, Klein T, Catrouillet S, Brendel JC. Supramolecular polymer bottlebrushes. Chem Commun (Camb) 2020; 56:5079-5110. [PMID: 32347854 DOI: 10.1039/d0cc01202e] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The field of supramolecular chemistry has long been known to generate complex materials of different sizes and shapes via the self-assembly of single or multiple low molar mass building blocks. Matching the complexity found in natural assemblies, however, remains a long-term challenge considering its precision in organizing large macromolecules into well-defined nanostructures. Nevertheless, the increasing understanding of supramolecular chemistry has paved the way to several attempts in arranging synthetic macromolecules into larger ordered structures based on non-covalent forces. This review is a first attempt to summarize the developments in this field, which focus mainly on the formation of one-dimensional, linear, cylindrical aggregates in solution with pendant polymer chains - therefore coined supramolecular polymer bottlebrushes in accordance with their covalent equivalents. Distinguishing by the different supramolecular driving forces, we first describe systems based on π-π interactions, which comprise, among others, the well-known perylene motif, but also the early attempts using cyclophanes. However, the majority of reported supramolecular polymer bottlebrushes are formed by hydrogen bonds as they can for example be found in linear and cyclic peptides, as well as so called sticker molecules containing multiple urea groups. Besides this overview on the reported motifs and their impact on the resulting morphology of the polymer nanostructures, we finally highlight the potential benefits of such non-covalent interactions and refer to promising future directions of this still mostly unrecognized field of supramolecular research.
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Affiliation(s)
- Franka V Gruschwitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
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150
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Chen Z, Xue Y, Gui M, Wang C, Wang F. Structural Isomerism Effect in Platinum(II) Acetylide-Based Supramolecular Polymers. Inorg Chem 2020; 59:6481-6488. [PMID: 32275403 DOI: 10.1021/acs.inorgchem.0c00575] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The self-assembly of π-aromatic organic and organometallic molecules into long-range-ordered supramolecular polymers is dictated by a variety of molecular parameters and external conditions. In this work, structural isomerism, representing one of the potent molecular parameters, has been investigated to modulate the self-assembly behaviors. Two platinum(II) acetylide-based structural isomers, with different N-hexyl substitution positions on the inner benzotriazole core, have been designed. Thanks to the synergistic participation of hydrogen-bonding and π-π-stacking interactions, both platinum(II) acetylide-based compounds are prone to forming supramolecular polymers via a nucleation-elongation cooperative mechanism in apolar media. Thermal hysteresis phenomena are observed for both compounds, suggesting the different supramolecular polymerization pathways upon cooling and heating. Remarkably, in addition to the spectroscopic difference, these two supramolecular polymers display distinct thermostability and rheological moduli, ascribing to different binding enthalpies of the neighboring monomers. Overall, it is evident that a minor variation at the molecular level brings huge differences to the properties of long-range-ordered supramolecular polymers. The current study illustrates the importance of the structural isomerism effect for the rational design of π-functional supramolecular materials.
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Affiliation(s)
- Ze Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yuncong Xue
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Mingliang Gui
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Cong Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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