1
|
Khan F, Das S. Modified Low Molecular Weight Pure and Engineered Gels: A Review of Strategies towards Their Development. ChemistrySelect 2022. [DOI: 10.1002/slct.202200205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Finaz Khan
- Department of Chemistry Amity Institute of Applied Sciences Amity University Kolkata Major Arterial Road, Action Area II, Kadampukur Village, Rajarhat, Newtown West Bengal 700135 India
| | - Susmita Das
- Department of Chemistry Amity Institute of Applied Sciences Amity University Kolkata Major Arterial Road, Action Area II, Kadampukur Village, Rajarhat, Newtown West Bengal 700135 India
| |
Collapse
|
2
|
3D printing of biocompatible low molecular weight gels: Imbricated structures with sacrificial and persistent N-alkyl-d-galactonamides. J Colloid Interface Sci 2022; 617:156-170. [PMID: 35276518 DOI: 10.1016/j.jcis.2022.02.076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 12/25/2022]
Abstract
HYPOTHESIS We have shown earlier that low molecular weight gels based on N-heptyl-d-galactonamide hydrogels can be 3D printed by solvent exchange, but they tend to dissolve in the printing bath. We wanted to explore the printing of less soluble N-alkyl-d-galactonamides with longer alkyl chains. Less soluble hydrogels could be good candidates as cell culture scaffolds. EXPERIMENTS N-hexyl, N-octyl and N-nonyl-d-galactonamide solutions in dimethylsulfoxide are injected in a bath of water following patterns driven by a 2D drawing robot coupled to a z-platform. Solubilization of the gels with time has been determined and solubility of the gelators has been measured by NMR. Imbricated structures have been built with N-nonyl-d-galactonamide as a persistent ink and N-hexyl or N-heptyl-d-galactonamide as sacrificial inks. Human mesenchymal stem cells have been cultured on N-nonyl-d-galactonamide hydrogels prepared by cooling or by 3D printing. FINDINGS The conditions for printing well-resolved 3D patterns have been determined for the three gelators. In imbricated structures, the solubilization of N-hexyl or N-heptyl-d-galactonamide occurred after a few hours or days and gave channels. Human mesenchymal stem cells grown on N-nonyl-d-galactonamide hydrogels prepared by heating-cooling, which are stable and have a fibrillar microstructure, developed properly. 3D printed hydrogels, which microstructure is made of micrometric flakes, appeared too fragile to withstand cell growth.
Collapse
|
3
|
Liu J, Schotman MJG, Hendrix MMRM, Lou X, Marín San Román PP, Voets IK, Sijbesma RP. Effects of structural variation on the self‐assembly of bis‐urea based bolaamphiphiles. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200888] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jie Liu
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Maaike J. G. Schotman
- Department of Biomedical Engineering, Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Marco M. R. M. Hendrix
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Xianwen Lou
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Patricia P. Marín San Román
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Ilja K. Voets
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Rint P. Sijbesma
- Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| |
Collapse
|
4
|
Sosa-Gil C, Cintas P, Palacios JC. Expanding amphiphilic architectures by ring-opening of epoxides and polyepoxides with N-methyl-d-glucamine: Structure, chiral bias and gelation. Carbohydr Res 2021; 502:108278. [PMID: 33774514 DOI: 10.1016/j.carres.2021.108278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 11/26/2022]
Abstract
The facile reaction of a readily available aminopolyol from the chiral pool, N-methyl-d-glucamine, which avoids the side reactions usually associated to anomers of amino sugars, with epoxide and polyepoxide derivatives, enables the preparation of new non-ionic surfactant-like structures combining hydrophilic and hydrophobic moieties. The molecular architectures thus obtained range from linear to tripodal and pyramidal structures. The resulting substances containing multiple chiral centers exist as diastereomeric mixtures, for which various conformations are likewise possible by virtue of inter-chain interactions. The stability and chirality preferences of all possible stereoisomers have been evaluated in detail by DFT methods. Given the amphiphilic structure of both protected and O-protected derivatives obtained by acetylation, self-aggregation could eventually lead to solvent entrapment. Unfortunately, only one compound behaves as efficient hydrogelator and DMSO-gelator at low concentrations. The issue is also discussed in terms of the different molecular arrangements.
Collapse
Affiliation(s)
- Concepción Sosa-Gil
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencias, And IACYS-Unidad de Química Verde y Desarrollo Sostenible, Universidad de Extremadura, E-06006, Badajoz, Spain.
| | - Pedro Cintas
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencias, And IACYS-Unidad de Química Verde y Desarrollo Sostenible, Universidad de Extremadura, E-06006, Badajoz, Spain
| | - Juan C Palacios
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencias, And IACYS-Unidad de Química Verde y Desarrollo Sostenible, Universidad de Extremadura, E-06006, Badajoz, Spain.
| |
Collapse
|
5
|
Nayak N, Gopidas KR. Self-Assembly of a β-Cyclodextrin Bis-Inclusion Complex into a Highly Crystalline Fiber Network. An Effective Strategy for Null Aggregate Design. J Phys Chem B 2019; 123:8131-8139. [DOI: 10.1021/acs.jpcb.9b05430] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Nagaraj Nayak
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, India
| | - Karical Raman Gopidas
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, India
| |
Collapse
|
6
|
Subrizi F, Benhamou L, Ward JM, Sheppard TD, Hailes HC. Aminopolyols from Carbohydrates: Amination of Sugars and Sugar‐Derived Tetrahydrofurans with Transaminases. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fabiana Subrizi
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - Laure Benhamou
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - John M. Ward
- Department of Biochemical EngineeringUniversity College London Bernard Katz Building London WC1E 6BT UK
| | - Tom D. Sheppard
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - Helen C. Hailes
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| |
Collapse
|
7
|
Subrizi F, Benhamou L, Ward JM, Sheppard TD, Hailes HC. Aminopolyols from Carbohydrates: Amination of Sugars and Sugar-Derived Tetrahydrofurans with Transaminases. Angew Chem Int Ed Engl 2019; 58:3854-3858. [PMID: 30690839 PMCID: PMC6492202 DOI: 10.1002/anie.201813712] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Indexed: 01/09/2023]
Abstract
Carbohydrates are the major component of biomass and have unique potential as a sustainable source of building blocks for chemicals, materials, and biofuels because of their low cost, ready availability, and stereochemical diversity. With a view to upgrading carbohydrates to access valuable nitrogen-containing sugar-like compounds such as aminopolyols, biocatalytic aminations using transaminase enzymes (TAms) have been investigated as a sustainable alternative to traditional synthetic strategies. Demonstrated here is the reaction of TAms with sugar-derived tetrahydrofuran (THF) aldehydes, obtained from the regioselective dehydration of biomass-derived sugars, to provide access to cyclic aminodiols in high yields. In a preliminary study we have also established the direct transamination of sugars to give acyclic aminopolyols. Notably, the reaction of the ketose d-fructose proceeds with complete stereoselectivity to yield valuable aminosugars in high purity.
Collapse
Affiliation(s)
- Fabiana Subrizi
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Laure Benhamou
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - John M. Ward
- Department of Biochemical EngineeringUniversity College LondonBernard Katz BuildingLondonWC1E 6BTUK
| | - Tom D. Sheppard
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Helen C. Hailes
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| |
Collapse
|
8
|
Kang S, Kim HK. Facile direct synthesis of unsymmetrical ureas from N-Alloc-, N-Cbz-, and N-Boc-protected amines using DABAL-Me3. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
9
|
Bachl J, Sampedro D, Mayr J, Díaz Díaz D. Ultrasonication-enhanced gelation properties of a versatile amphiphilic formamidine-based gelator exhibiting both organogelation and hydrogelation abilities. Phys Chem Chem Phys 2018; 19:22981-22994. [PMID: 28816322 DOI: 10.1039/c7cp03529b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We describe the preparation of a novel amphiphilic gelator built from a formamidine core, which is able to form a variety of physical organogels and hydrogels at concentrations ranging from 15 to 150 mg mL-1. Interestingly, ultrasound treatment of isotropic solutions (i.e., gel-precursor) resulted in a remarkable enhancement of the gelation kinetics as well as the gelation scope and characteristic gel properties (e.g., critical gelation concentration, gel-to-sol transition temperature, viscoelastic moduli) in comparison to the heating-cooling protocol typically used to obtain supramolecular gels. Thermoreversibility, thixotropy, injectability and multistimuli responsiveness are some of the most relevant functionalities of these gels. Electron microscopy imaging revealed the formation of entangled networks made of fibers of nanometer diameters and micrometer lengths, with different morphological features depending on the solvent. Insights into the driving forces for molecular aggregations were obtained from FTIR, NMR, PXRD and computational studies. The results suggest a major stabilization of the fibers through additive N-HO hydrogen bonds, in combination with hydrophobic interactions, over π-π stacking interactions.
Collapse
Affiliation(s)
- Jürgen Bachl
- Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany.
| | - Diego Sampedro
- Departamento de Química, Universidad de La Rioja, Madre de Dios, 51, Logroño 26006, Spain
| | - Judith Mayr
- Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany.
| | - David Díaz Díaz
- Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany. and Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Spain
| |
Collapse
|
10
|
Liu M, Ouyang G, Niu D, Sang Y. Supramolecular gelatons: towards the design of molecular gels. Org Chem Front 2018. [DOI: 10.1039/c8qo00620b] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The concept of supramolecular gelatons for the design of gels was proposed and described.
Collapse
Affiliation(s)
- Minghua Liu
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid
- Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Guanghui Ouyang
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid
- Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Dian Niu
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid
- Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Yutao Sang
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid
- Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
| |
Collapse
|
11
|
Himabindu M, Palanisamy A. Ultrasound- and Temperature-Induced Gelation of Gluconosemicarbazide Gelator in DMSO and Water Mixtures. Gels 2017; 3:E12. [PMID: 30920509 PMCID: PMC6318682 DOI: 10.3390/gels3020012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/31/2017] [Accepted: 04/12/2017] [Indexed: 12/25/2022] Open
Abstract
We have developed amphiphilic supramolecular gelators carrying glucose moiety that could gel a mixture of dimethyl sulfoxide (DMSO) and water upon heating as well as ultrasound treatment. When the suspension of gluconosemicarbazide was subjected to ultrasound treatment, gelation took place at much lower concentrations compared to thermal treatment, and the gels transformed into a solution state at higher temperatures compared to temperature-induced gels. The morphology was found to be influenced by the nature of the stimulus and presence of salts such as KCl, NaCl, CaCl₂ and surfactant (sodium dodecyl sulphate) at a concentration of 0.05 M. The gel exhibited impressive tolerance to these additives, revealing the stability and strength of the gels. Fourier transform infrared spectroscopy (FTIR) revealed the presence of the intermolecular hydrogen bonding interactions while differential scanning calorimetry (DSC) and rheological studies supported better mechanical strength of ultrasound-induced (UI) gels over thermally-induced (TI) gels.
Collapse
Affiliation(s)
- Mothukunta Himabindu
- Polymers and Functional Materials Division, Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana 500007, India.
| | - Aruna Palanisamy
- Polymers and Functional Materials Division, Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana 500007, India.
| |
Collapse
|
12
|
Xu J, Wang Y, Shan H, Lin Y, Chen Q, Roy VAL, Xu Z. Ultrasound-Induced Organogel Formation Followed by Thin Film Fabrication via Simple Doctor Blading Technique for Field-Effect Transistor Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:18991-18997. [PMID: 27377991 DOI: 10.1021/acsami.6b04817] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We demonstrate doctor blading technique to fabricate high performance transistors made up of printed small molecular materials. In this regard, we synthesize a new soluble phthalocyanine, tetra-n-butyl peripheral substituted copper(II) phthalocaynine (CuBuPc), that can easily undergo gel formation upon ultrasonic irradiation, leading to the formation of three-dimensional (3D) network composed of one-dimensional (1D) nanofibers structure. Finally, taking the advantage of thixotropic nature of the CuBuPc organogel, we use the doctor blade processing technique that limits the material wastage for the fabrication of transistor devices. Due to the ultrasound induced stronger π-π interaction, the transistor fabricated by doctor blading based on CuBuPc organogel exhibits significant increase in charge carrier mobility in comparison with other solution process techniques, thus paving a way for a simple and economically viable preparation of electronic circuits.
Collapse
Affiliation(s)
- Jiaju Xu
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China
| | - Yulong Wang
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China
| | - Haiquan Shan
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China
| | - Yiwei Lin
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China
| | - Qian Chen
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China
| | - V A L Roy
- Department of Physics and Materials Science, City University of Hong Kong , Hong Kong, SAR
| | - Zongxiang Xu
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China
| |
Collapse
|
13
|
Cheng M, Liu L, Cao Y, Jiang J, Wang L. A Phosphine Oxide Functional Group Based [2]Rotaxane That Operates as a Multistable Molecular Shuttle. Chemphyschem 2016; 17:1835-9. [DOI: 10.1002/cphc.201501016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Ming Cheng
- Key Laboratory of Mesoscopic Chemistry of MOE; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Li Liu
- Key Laboratory of Mesoscopic Chemistry of MOE; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Yihan Cao
- Key Laboratory of Mesoscopic Chemistry of MOE; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Juli Jiang
- Key Laboratory of Mesoscopic Chemistry of MOE; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Leyong Wang
- Key Laboratory of Mesoscopic Chemistry of MOE; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| |
Collapse
|
14
|
Du X, Zhou J, Shi J, Xu B. Supramolecular Hydrogelators and Hydrogels: From Soft Matter to Molecular Biomaterials. Chem Rev 2015; 115:13165-307. [PMID: 26646318 PMCID: PMC4936198 DOI: 10.1021/acs.chemrev.5b00299] [Citation(s) in RCA: 1296] [Impact Index Per Article: 144.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Indexed: 12/19/2022]
Abstract
In this review we intend to provide a relatively comprehensive summary of the work of supramolecular hydrogelators after 2004 and to put emphasis particularly on the applications of supramolecular hydrogels/hydrogelators as molecular biomaterials. After a brief introduction of methods for generating supramolecular hydrogels, we discuss supramolecular hydrogelators on the basis of their categories, such as small organic molecules, coordination complexes, peptides, nucleobases, and saccharides. Following molecular design, we focus on various potential applications of supramolecular hydrogels as molecular biomaterials, classified by their applications in cell cultures, tissue engineering, cell behavior, imaging, and unique applications of hydrogelators. Particularly, we discuss the applications of supramolecular hydrogelators after they form supramolecular assemblies but prior to reaching the critical gelation concentration because this subject is less explored but may hold equally great promise for helping address fundamental questions about the mechanisms or the consequences of the self-assembly of molecules, including low molecular weight ones. Finally, we provide a perspective on supramolecular hydrogelators. We hope that this review will serve as an updated introduction and reference for researchers who are interested in exploring supramolecular hydrogelators as molecular biomaterials for addressing the societal needs at various frontiers.
Collapse
Affiliation(s)
- Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| |
Collapse
|
15
|
Datta S, Bhattacharya S. Multifarious facets of sugar-derived molecular gels: molecular features, mechanisms of self-assembly and emerging applications. Chem Soc Rev 2015; 44:5596-637. [PMID: 26023922 DOI: 10.1039/c5cs00093a] [Citation(s) in RCA: 195] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The remarkable capability of nature to design and create excellent self-assembled nano-structures, especially in the biological world, has motivated chemists to mimic such systems with synthetic molecular and supramolecular systems. The hierarchically organized self-assembly of low molecular weight gelators (LMWGs) based on non-covalent interactions has been proven to be a useful tool in the development of well-defined nanostructures. Among these, the self-assembly of sugar-derived LMWGs has received immense attention because of their propensity to furnish biocompatible, hierarchical, supramolecular architectures that are macroscopically expressed in gel formation. This review sheds light on various aspects of sugar-derived LMWGs, uncovering their mechanisms of gelation, structural analysis, and tailorable properties, and their diverse applications such as stimuli-responsiveness, sensing, self-healing, environmental problems, and nano and biomaterials synthesis.
Collapse
Affiliation(s)
- Sougata Datta
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India.
| | | |
Collapse
|
16
|
Kleinsmann AJ, Weckenmann NM, Nachtsheim BJ. Phosphate-Triggered Self-Assembly ofN-[(Uracil-5-yl)methyl]urea: A Minimalistic Urea-Derived Hydrogelator. Chemistry 2014; 20:9753-61. [DOI: 10.1002/chem.201402916] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Indexed: 11/07/2022]
|
17
|
Yu X, Chen L, Zhang M, Yi T. Low-molecular-mass gels responding to ultrasound and mechanical stress: towards self-healing materials. Chem Soc Rev 2014; 43:5346-71. [DOI: 10.1039/c4cs00066h] [Citation(s) in RCA: 383] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
18
|
|
19
|
Mathiselvam M, Loganathan D, Varghese B. Synthesis and characterization of thiourea- and urea-linked glycolipids as low-molecular-weight hydrogelators. RSC Adv 2013. [DOI: 10.1039/c3ra42041h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
20
|
Gaeta C, Talotta C, Mirra S, Margarucci L, Casapullo A, Neri P. Catenation of calixarene annulus. Org Lett 2012; 15:116-9. [PMID: 23286391 DOI: 10.1021/ol303142c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Through-the-annulus-catenated calixarenes have been obtained, for the first time, by exploiting the "superweak anion" approach that allows the threading of the calix cavity with functionalized dialkylammonium axles. In addition, the first example of a stereoprogrammed synthesis of a catenane orientational isomer (an oriented calix[2]catenane) has been obtained, after macrocyclization, by using a directional alkylbenzylammonium axle.
Collapse
Affiliation(s)
- Carmine Gaeta
- Dipartimento di Chimica e Biologia and NANO_MATES Research Center, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (Salerno), Italy.
| | | | | | | | | | | |
Collapse
|
21
|
Liu Y, Wang T, Liu M. Supramolecular Polymer Hydrogels from BolaamphiphilicL-Histidine and Benzene Dicarboxylic Acids: Thixotropy and Significant Enhancement of EuIIIFluorescence. Chemistry 2012; 18:14650-9. [DOI: 10.1002/chem.201202637] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Indexed: 12/22/2022]
|
22
|
|
23
|
|
24
|
Lin Y, Mao C. Bio-inspired supramolecular self-assembly towards soft nanomaterials. FRONTIERS OF MATERIALS SCIENCE 2011; 5:247-265. [PMID: 21980594 PMCID: PMC3185360 DOI: 10.1007/s11706-011-0141-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Supramolecular self-assembly has proven to be a reliable approach towards versatile nanomaterials based on multiple weak intermolecular forces. In this review, the development of bio-inspired supramolecular self-assembly into soft materials and their applications are summarized. Molecular systems used in bio-inspired "bottom-up self-assembly" involve small organic molecules, peptides or proteins, nucleic acids, and viruses. Self-assembled soft nanomaterials have been exploited in various applications such as inorganic nanomaterial synthesis, drug or gene delivery, tissue engineering, and so on.
Collapse
Affiliation(s)
- Yiyang Lin
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, 101 Stephenson Parkway, Norman, Oklahoma 73019, USA
| | | |
Collapse
|
25
|
Goyal N, Cheuk S, Wang G. Synthesis and characterization of d-glucosamine-derived low molecular weight gelators. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.05.071] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
26
|
Nieuwenhuizen M, de Greef T, van der Bruggen R, Paulusse J, Appel W, Smulders M, Sijbesma R, Meijer E. Self-Assembly of Ureido-Pyrimidinone Dimers into One-Dimensional Stacks by Lateral Hydrogen Bonding. Chemistry 2010; 16:1601-12. [DOI: 10.1002/chem.200902107] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
27
|
Pérez EMS, Avalos M, Babiano R, Cintas P, Light ME, Jiménez JL, Palacios JC, Sancho A. Schiff bases from D-glucosamine and aliphatic ketones. Carbohydr Res 2010; 345:23-32. [PMID: 19914606 DOI: 10.1016/j.carres.2009.08.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2009] [Revised: 07/31/2009] [Accepted: 08/13/2009] [Indexed: 11/28/2022]
Abstract
Despite the comprehensive literature and enormous versatility of chiral imines derived from aminosugars and aldehydes, the corresponding counterparts generated from ketones remain an underestimated research subject. Filling in the gap, this manuscript sheds light on the synthetic and structural aspects of such substances and updates the few antecedents reported so far.
Collapse
Affiliation(s)
- Esther M S Pérez
- Departamento de Química Orgánica e Inorgánica, QUOREX Research Group, Universidad de Extremadura, E-06071 Badajoz, Spain.
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Yan Y, Lu T, Huang J. Recent advances in the mixed systems of bolaamphiphiles and oppositely charged conventional surfactants. J Colloid Interface Sci 2009; 337:1-10. [DOI: 10.1016/j.jcis.2009.04.082] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2008] [Revised: 04/24/2009] [Accepted: 04/27/2009] [Indexed: 11/24/2022]
|
29
|
Wu J, Yi T, Xia Q, Zou Y, Liu F, Dong J, Shu T, Li F, Huang C. Tunable gel formation by both sonication and thermal processing in a cholesterol-based self-assembly system. Chemistry 2009; 15:6234-43. [PMID: 19441000 DOI: 10.1002/chem.200900409] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A family of asymmetric cholesterol-based fluorescent organogelators containing naphthalimide, connected by two acylamines and different alkyl-chain spacers, have been designed and prepared. These compounds can gelate a variety of organic solvents with both ultrasound stimuli and general sol-gel processes. The self-assembly and gelling properties of the compounds depend on the length of the alkyl chains and can be controlled by ultrasound stimuli and renewed by a thermodynamic process. The morphologies and surface wetabilities of the xerogels prepared from these gelators are strongly affected by environmental stimuli. The mechanism of the process was investigated by confocal laser scanning microscopy, transmission or scanning electron microscopy, wide-angle X-ray scattering analysis, and rheological experiments. The studies reveal that the cooperation and relative competition of multiple intermolecular interactions, influenced by the sonication or thermal stimulus, are the main contributors for the aggregation or nucleation processes; this results in the macrodifferences in morphology and surface properties. These results provide a deeper understanding of the intermediate transition state of the gel during use of an ultrasound stimulus.
Collapse
Affiliation(s)
- Junchen Wu
- Department of Chemistry and Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, China
| | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Cravotto G, Cintas P. Molecular self-assembly and patterning induced by sound waves. The case of gelation. Chem Soc Rev 2009; 38:2684-97. [DOI: 10.1039/b901840a] [Citation(s) in RCA: 234] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
Synthesis of bis-ureas from bis(o-nitrophenyl) carbonate. MOLECULES (BASEL, SWITZERLAND) 2008; 13:3192-7. [PMID: 19078859 PMCID: PMC6244956 DOI: 10.3390/molecules13123192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Revised: 11/28/2008] [Accepted: 12/03/2008] [Indexed: 11/18/2022]
Abstract
A general method for the preparation of bis-ureas from bis(o-nitrophenyl) carbonate has been developed. Directional urea synthesis is achieved by sequential amine addition to bis(o-nitrophenyl) carbonate in two steps: in the first step bis(o-nitrophenyl) carbonate is reacted with benzylamine to form benzyl-o-nitrophenyl carbamate; in the second step the carbamate is reacted with a variety of diamines in toluene to yield bis-ureas.
Collapse
|