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Monika, Meenakshi, Brahma M, Maruthi M, Selvakumar S, Ansari A, Gupta MK. N-Hydroxyalkanamide Based Organo/hydrogels as Novel Scaffolds for pH-Dependent Metronidazole and Theophylline Release. Chem Biodivers 2024; 21:e202400105. [PMID: 38700110 DOI: 10.1002/cbdv.202400105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 05/03/2024] [Accepted: 05/03/2024] [Indexed: 05/05/2024]
Abstract
The traditional delivery of metronidazole and theophylline presents challenges like bitter taste, variable absorption, and side effects. However, gel-based systems offer advantages including enhanced targeted drug delivery, minimized side effects, and improved patient compliance, effectively addressing these challenges. Consequently, a cost-effective synthesis of N-hydroxyalkanamide gelators with varying alkyl chain lengths was achieved in a single-step reaction procedure. These gelators formed self-assembled aggregates in DMSO/water solvent system, resulting in organo/hydrogels at a minimum gelation concentration of 1.5 % w/v. Subsequently, metronidazole and theophylline were encapsulated within the gel core and released through gel-to-sol transition triggered by pH variation at 37 °C, while maintaining the structural-activity relationship. UV-vis spectroscopy was employed to observe the drug release behavior. Furthermore, in vitro cytotoxicity assays revealed cytotoxic effects against A549 lung adenocarcinoma cells, indicating anti-proliferative activity against human lung cancer cells. Specifically, the gel containing theophylline (16HAD+Th) exhibited cytotoxicity on cancerous A549 cells with IC50 values of 19.23±0.6 μg/mL, followed by the gel containing metronidazole (16HAD+Mz) with IC50 values of 23.75±0.7 μg/mL. Moreover, the system demonstrated comparable antibacterial activity against both gram-negative (E. coli) and gram-positive bacteria (S. aureus).
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Affiliation(s)
- Monika
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh, Haryana, 123031, India
| | - Meenakshi
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh, Haryana, 123031, India
| | - Mettle Brahma
- Department of Biochemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh, Haryana, 123031, India
| | - Mulaka Maruthi
- Department of Biochemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh, Haryana, 123031, India
| | - Sermadurai Selvakumar
- Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, Madhya Pradesh, India
| | - Azaj Ansari
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh, Haryana, 123031, India
| | - Manoj K Gupta
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh, Haryana, 123031, India
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2
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Holey S, Nayak RR. Harnessing Glycolipids for Supramolecular Gelation: A Contemporary Review. ACS OMEGA 2024; 9:25513-25538. [PMID: 38911776 PMCID: PMC11190938 DOI: 10.1021/acsomega.4c00958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/12/2024] [Accepted: 05/17/2024] [Indexed: 06/25/2024]
Abstract
Within the scope of this review, our exploration spans diverse facets of amphiphilic glycolipid-based low-molecular-weight gelators (LMWGs). This journey explores glycolipid synthesis, self-assembly, and gelation with tailorable properties. It begins by examining the design of glycolipids and their influence on gel formation. Following this, a brief exploration of several gel characterization techniques adds another layer to the understanding of these materials. The final section is dedicated to unraveling the various applications of these glycolipid-based supramolecular gels. A meticulous analysis of available glycolipid gelators and their correlations with desired properties for distinct applications is a pivotal aspect of their investigation. As of the present moment, there exists a notable absence of a review dedicated exclusively to glycolipid gelators. This study aims to bridge this critical gap by presenting an overview that provides novel insights into their unique properties and versatile applications. This holistic examination seeks to contribute to a deeper understanding of molecular design, structural characteristics, and functional applications of glycolipid gelators by offering insights that can propel advancements in these converging scientific disciplines. Overall, this review highlights the diverse classifications of glycolipid-derived gelators and particularly emphasizes their capacity to form gels.
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Affiliation(s)
- Snehal
Ashokrao Holey
- Department
of Oils, Lipid Science and Technology, CSIR-Indian
Institute of Chemical Technology, Hyderabad 500 007, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rati Ranjan Nayak
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- CSIR-Institute
of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India
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3
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Yadav E, Khatana AK, Sebastian S, Gupta MK. DAP derived fatty acid amide organogelators as novel carrier for drug incorporation and pH-responsive release. NEW J CHEM 2021. [DOI: 10.1039/d0nj04611f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Low-molecular mass fatty acid amide gelators were synthesized using 2,6-diaminopyridine as a linker and alkyl chains of varying lengths. The prepared organogel-elusions are able to trap and release ibuprofen molecule without changing its structure and activity.
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Affiliation(s)
- Eqvinshi Yadav
- Department of Chemistry
- School of Basic Sciences
- Central University of Haryana
- Haryana
- India
| | - Anil Kumar Khatana
- Department of Chemistry
- School of Basic Sciences
- Central University of Haryana
- Haryana
- India
| | - Sharol Sebastian
- Department of Chemistry
- School of Basic Sciences
- Central University of Haryana
- Haryana
- India
| | - Manoj K. Gupta
- Department of Chemistry
- School of Basic Sciences
- Central University of Haryana
- Haryana
- India
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4
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Zhang B, Chen S, Luo H, Zhang B, Wang F, Song J. Porous amorphous powder form phase-selective organogelator for rapid recovery of leaked aromatics and spilled oils. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121460. [PMID: 31690502 DOI: 10.1016/j.jhazmat.2019.121460] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/10/2019] [Accepted: 10/10/2019] [Indexed: 05/22/2023]
Abstract
Phase-selective organogelators (PSOGs) have drawn wide attention due to their potential applications in recovery of leaked aromatics and spilled oils. However, powder form PSOGs with fast gelling abilities and broad applicabilities are still limited. Herein, we developed three D-gluconic acetal-based gelators with different alkyl chains, all of which show excellent gel properties for hydrocarbon solvents. The spectroscopic and X-ray results revealed that the gel formation was the synergy of hydrogen bonding, π-π stacking and van der Waals forces. Surprisingly, the powder form gelator A with a cis double bond in the alkyl chain could instantly and selectively gel aromatic hydrocarbons, and also rapidly solidify crude oils with widely ranging viscosities from seawater at room temperature within minutes. Further research revealed that A powder exhibited porous amorphous morphology because the cis double bonds broke the crystalline chain-chain interdigitation between the assemblies. Therefore, the fast dispersion and recombination of fibers under the action of oil molecules lead to the fast room temperature gel process. Overall, a non-toxic and low-cost powder form PSOG with rapid room temperature phase selective gelation ability for a wide range of oils makes it promising for the emergency treatment of oil spill and aromatics leakage.
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Affiliation(s)
- Baohao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Shipeng Chen
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Hao Luo
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Bao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
| | - Fumin Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
| | - Jian Song
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
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5
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Novotná V, Hamplová V, Lejček L, Pociecha D, Cigl M, Fekete L, Glogarová M, Bednárová L, Majewski PW, Gorecka E. Organic nanotubes created from mesogenic derivatives. NANOSCALE ADVANCES 2019; 1:2835-2839. [PMID: 36133609 PMCID: PMC9418705 DOI: 10.1039/c9na00175a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 06/15/2019] [Indexed: 06/16/2023]
Abstract
A facile route to prepare nanotubes from rod-like mesogens dissolved in typical organic solvents is reported. For selected types of chiral rod-like molecules, nanotubes were formed from both enantiomers and racemic mixtures by slow evaporation from solution, regardless of the solvent, concentration or deposition type. The obtained supramolecular assemblies were studied using AFM, TEM and SEM techniques, and other experimental techniques (IR, UV-Vis spectroscopy and X-ray diffraction) were also applied. The difference in the surface tension at opposite crystallite surfaces is suggested as a possible mechanism for nanotube nucleation. We propose a quite new rolling-up mechanism related to the surface tension difference at opposite crystallite surfaces.
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Affiliation(s)
- Vladimíra Novotná
- Institute of Physics of the Czech Academy of Sciences Na Slovance 2 CZ-182 21 Prague 8 Czech Republic +420286890527 +420266053111
| | - Věra Hamplová
- Institute of Physics of the Czech Academy of Sciences Na Slovance 2 CZ-182 21 Prague 8 Czech Republic +420286890527 +420266053111
| | - Lubor Lejček
- Institute of Physics of the Czech Academy of Sciences Na Slovance 2 CZ-182 21 Prague 8 Czech Republic +420286890527 +420266053111
| | - Damian Pociecha
- Faculty of Chemistry, University of Warsaw ul. Zwirki i Wigury 101 02-089 Warsaw Poland +48228221075
| | - Martin Cigl
- Institute of Physics of the Czech Academy of Sciences Na Slovance 2 CZ-182 21 Prague 8 Czech Republic +420286890527 +420266053111
| | - Ladislav Fekete
- Institute of Physics of the Czech Academy of Sciences Na Slovance 2 CZ-182 21 Prague 8 Czech Republic +420286890527 +420266053111
| | - Milada Glogarová
- Institute of Physics of the Czech Academy of Sciences Na Slovance 2 CZ-182 21 Prague 8 Czech Republic +420286890527 +420266053111
| | - Lucie Bednárová
- Institute of Organic Chemistry and Biochemistry of the CAS Flemingovo n. 2,166 10 Prague 6 CZ-182 21 Prague 6 Czech Republic
| | - Pawel W Majewski
- Faculty of Chemistry, University of Warsaw ul. Zwirki i Wigury 101 02-089 Warsaw Poland +48228221075
| | - Ewa Gorecka
- Faculty of Chemistry, University of Warsaw ul. Zwirki i Wigury 101 02-089 Warsaw Poland +48228221075
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6
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John G, Nagarajan S, Vemula PK, Silverman JR, Pillai C. Natural monomers: A mine for functional and sustainable materials – Occurrence, chemical modification and polymerization. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.02.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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7
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Shimizu T. Self-Assembly of Discrete Organic Nanotubes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170424] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshimi Shimizu
- AIST Fellow, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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8
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Lalitha K, Sridharan V, Maheswari CU, Vemula PK, Nagarajan S. Morphology transition in helical tubules of a supramolecular gel driven by metal ions. Chem Commun (Camb) 2018; 53:1538-1541. [PMID: 28094356 DOI: 10.1039/c6cc09120b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Our aim to access a particular chemical functionality on helical tubules has been achieved by the rational molecular design and synthesis of glucono-appended cardanol derivatives. For the first time, we report a chiral molecular packing with α-helical tubules, and chiral symmetry-breaking upon exposure to Cu2+ that generated the final ordered structure via an in situ morphological transition without undergoing any phase change.
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Affiliation(s)
- Krishnamoorthy Lalitha
- Organic Synthesis Group, Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur-613401, Tamil Nadu, India.
| | - Vellaisamy Sridharan
- Organic Synthesis Group, Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur-613401, Tamil Nadu, India.
| | - C Uma Maheswari
- Organic Synthesis Group, Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur-613401, Tamil Nadu, India.
| | - Praveen Kumar Vemula
- Laboratory of Self-Assembled Biomaterials, Institute for Stem Cell Biology and Regenerative Medicine (inStem), National Centre for Biological Sciences (NCBS), Bangalore-560 065, Karnataka, India
| | - Subbiah Nagarajan
- Organic Synthesis Group, Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials, School of Chemical and Biotechnology, SASTRA University, Thanjavur-613401, Tamil Nadu, India.
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9
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Ma Z, Zhang P, Yu X, Lan H, Li Y, Xie D, Li J, Yi T. Sugar based nanotube assembly for the construction of sonication triggered hydrogel: an application of the entrapment of tetracycline hydrochloride. J Mater Chem B 2015; 3:7366-7371. [DOI: 10.1039/c5tb01191d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The tube assembly comprised of naphthalimide and glucose segments could undergo direct suspension-to-hydrogel transformation accelerated by ultrasound.
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Affiliation(s)
- Zichuan Ma
- College of Chemistry and Material Sciences
- Hebei Normal University
- Shijiazhuang 050024
- P. R. China
| | - Ping Zhang
- College of Chemistry and Material Sciences
- Hebei Normal University
- Shijiazhuang 050024
- P. R. China
| | - Xudong Yu
- College of Science, and Hebei Research Center of Pharmaceutical and Chemical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050080
- P. R. China
| | - Haichuang Lan
- Department of Chemistry, and Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- China
| | - Yajuan Li
- College of Science, and Hebei Research Center of Pharmaceutical and Chemical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050080
- P. R. China
| | - Dongyan Xie
- College of Science, and Hebei Research Center of Pharmaceutical and Chemical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050080
- P. R. China
| | - Jingyin Li
- College of Science, and Hebei Research Center of Pharmaceutical and Chemical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050080
- P. R. China
| | - Tao Yi
- Department of Chemistry, and Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- China
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10
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Barclay TG, Constantopoulos K, Matisons J. Nanotubes Self-Assembled from Amphiphilic Molecules via Helical Intermediates. Chem Rev 2014; 114:10217-91. [DOI: 10.1021/cr400085m] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Thomas G. Barclay
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Kristina Constantopoulos
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Janis Matisons
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
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11
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Cuvier AS, Berton J, Stevens CV, Fadda GC, Babonneau F, Van Bogaert INA, Soetaert W, Pehau-Arnaudet G, Baccile N. pH-triggered formation of nanoribbons from yeast-derived glycolipid biosurfactants. SOFT MATTER 2014; 10:3950-3959. [PMID: 24728486 DOI: 10.1039/c4sm00111g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present paper, we show that the saturated form of acidic sophorolipids, a family of industrially scaled bolaform microbial glycolipids, unexpectedly forms chiral nanofibers only at pH below 7.5. In particular, we illustrate that this phenomenon derives from a subtle cooperative effect of molecular chirality, hydrogen bonding, van der Waals forces and steric hindrance. The pH-responsive behaviour was shown by Dynamic Light Scattering (DLS), pH-titration and Field Emission Scanning Electron Microscopy (FE-SEM) while the nanoscale chirality was evidenced by Circular Dichroism (CD) and cryo Transmission Electron Microscopy (cryo-TEM). The packing of sophorolipids within the ribbons was studied using Small Angle Neutron Scattering (SANS), Wide Angle X-ray Scattering (WAXS) and 2D (1)H-(1)H through-space correlations via Nuclear Magnetic Resonance under very fast (67 kHz) Magic Angle Spinning (MAS-NMR).
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Affiliation(s)
- Anne-Sophie Cuvier
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7574, Chimie de la Matière Condensée de Paris, F-75005, Paris, France.
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12
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Kameta N. Soft nanotube hosts for capsulation and release of molecules, macromolecules, and nanomaterials. J INCL PHENOM MACRO 2014. [DOI: 10.1007/s10847-014-0397-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Moorthy MS, Kim MJ, Bae JH, Park SS, Saravanan N, Kim SH, Ha CS. Multifunctional Periodic Mesoporous Organosilicas for Biomolecule Recognition, Biomedical Applications in Cancer Therapy, and Metal Adsorption. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300118] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Balachandran VS, Jadhav SR, Vemula PK, John G. Recent advances in cardanol chemistry in a nutshell: from a nut to nanomaterials. Chem Soc Rev 2013; 42:427-38. [DOI: 10.1039/c2cs35344j] [Citation(s) in RCA: 206] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Nandi S, Altenbach HJ, Jakob B, Lange K, Ihizane R, Schneider MP, Gün Ü, Mayer A. Amphiphiles Based on d-Glucose: Efficient Low Molecular Weight Gelators. Org Lett 2012; 14:3826-9. [DOI: 10.1021/ol300555a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sukhendu Nandi
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
| | - Hans-Josef Altenbach
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
| | - Bernd Jakob
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
| | - Karsten Lange
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
| | - Rachid Ihizane
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
| | - Manfred P. Schneider
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
| | - Ümit Gün
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
| | - Andre Mayer
- FB C − Organische Chemie, Bergische Universität Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany, and FB C − Mikrostrukturtechnik, Bergische Universität Wuppertal, Rainer-Gruenter Strasse 21, 42119 Wuppertal, Germany
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16
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Chen X, Pradhan T, Wang F, Kim JS, Yoon J. Fluorescent Chemosensors Based on Spiroring-Opening of Xanthenes and Related Derivatives. Chem Rev 2011; 112:1910-56. [DOI: 10.1021/cr200201z] [Citation(s) in RCA: 1608] [Impact Index Per Article: 123.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaoqiang Chen
- Departments of Chemistry and Nano Science and of Bioinspired Science (WCU), Ewha Womans University, Seoul 120-750, Korea
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
| | - Tuhin Pradhan
- Department of Chemistry, Korea University, Seoul 136-701, Korea
| | - Fang Wang
- Departments of Chemistry and Nano Science and of Bioinspired Science (WCU), Ewha Womans University, Seoul 120-750, Korea
| | - Jong Seung Kim
- Department of Chemistry, Korea University, Seoul 136-701, Korea
| | - Juyoung Yoon
- Departments of Chemistry and Nano Science and of Bioinspired Science (WCU), Ewha Womans University, Seoul 120-750, Korea
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17
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Nandi S, Altenbach HJ, Jakob B, Lange K, Ihizane R, Schneider MP. A Novel Class of Organo- (Hydro-) Gelators Based on Ascorbic Acid. Org Lett 2011; 13:1980-3. [DOI: 10.1021/ol2003622] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sukhendu Nandi
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Hans-Josef Altenbach
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Bernd Jakob
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Karsten Lange
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Rachid Ihizane
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Manfred P. Schneider
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
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18
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Mukai M, Aoyagi M, Minamikawa H, Asakawa M, Shimizu T, Kogiso M. A SimpleN-Acyl-L-amino Acid Constructed Metal-complexed Organic Nanotube Having an Inner Diameter below 10 nm. CHEM LETT 2011. [DOI: 10.1246/cl.2011.218] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Roytman R, Adler-Abramovich L, Kumar KSA, Kuan TC, Lin CC, Gazit E, Brik A. Exploring the self-assembly of glycopeptides using a diphenylalanine scaffold. Org Biomol Chem 2011; 9:5755-61. [DOI: 10.1039/c1ob05071k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Gao D, Xue M, Peng J, Liu J, Yan N, He P, Fang Y. Preparation and gelling properties of sugar-contained low-molecular-mass gelators: Combination of cholesterol and linear glucose. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.02.070] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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KAMETA N, MASUDA M, SHIMIZU T. Liquid-Phase Nanospace Science of Bionanotubes Consisting of Synthetic Lipid Membranes. KOBUNSHI RONBUNSHU 2010. [DOI: 10.1295/koron.67.560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zhang X, Zou J, Tamhane K, Kobzeff FF, Fang J. Self-assembly of pH-switchable spiral tubes: supramolecular chemical springs. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:217-220. [PMID: 19859941 DOI: 10.1002/smll.200901067] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- Xuejun Zhang
- Advanced Materials Processing and Analysis Center, Department of Mechanical, Materials, and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USA
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Capek I. Dispersions, novel nanomaterial sensors and nanoconjugates based on carbon nanotubes. Adv Colloid Interface Sci 2009; 150:63-89. [PMID: 19573856 DOI: 10.1016/j.cis.2009.05.006] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Accepted: 05/17/2009] [Indexed: 11/29/2022]
Abstract
Nanomaterials are structures with dimensions characteristically much below 100 nm. The unique physical properties (e.g., conductivity, reactivity) have placed these nanomaterials in the forefront of emerging technologies. Significant enhancement of optical, mechanical, electrical, structural, and magnetic properties are commonly found through the use of novel nanomaterials. One of the most exciting classes of nanomaterials is represented by the carbon nanotubes. Carbon nanotubes, including single-wall carbon nanotubes, multi-wall carbon nanotubes, and concentric tubes have been shown to possess superior electronic, thermal, and mechanical properties to be attractive for a wide range of potential applications They sometimes bunch to form "ropes" and show great potential for use as highly sensitive electronic (bio)sensors due to the very small diameter, directly comparable to the size of single analyte molecules and that every single carbon atom is in direct contact with the environment, allowing optimal interaction with nearby molecules. Composite materials based on integration of carbon nanotubes and some other materials to possess properties of the individual components with a synergistic effect have gained growing interest. Materials for such purposes include conducting polymers, redox mediators and metal nanoparticles. These tubes provide the necessary building blocks for electronic circuits and afford new opportunities for chip miniaturization, which can dramatically improve the scaling prospects for the semiconductor technologies and the fabrication of devices, including field-effect transistors and sensors. Carbon nanotubes are one of the ideal materials for the preparation of nanoelectronic devices and nanosensors due to the unique electrical properties, outstanding electrocatalytic properties, high chemical stability and larger specific surface area of nanotubes. Carbon nanotubes are attractive material for supercapacitors due to their unique one-dimensional mesoporous structure, high specific surface area, low resistivity and good chemical stability. Nanoscaled composite materials based on carbon nanotubes have been broadly used due to their high chemical inertness, non-swelling effect, high purity and rigidity. The integration of carbon nanotubes with organics, biomaterials and metal nanoparticles has led to the development of new hybrid materials and sensors. Hybrid nanoscale materials are well established in various processes such as organic and inorganic compounds, nucleic acid detachment, protein separation, and immobilization of enzymes. Those nanostructures can be used as the building blocks for electronics and nanodevices because uniform organic and metal coatings with the small and monodisperse domain sizes are crucial to optimize nanoparticle conductivity and to detect changes in conductivity and absorption induced by analyte adsorption on these surfaces. The highly ordered assembly of zero-dimensional and one-dimensional nanoparticles is not only necessary for making functional devices, but also presents an opportunity to develop novel collective properties.
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Affiliation(s)
- Ignác Capek
- Slovak Academy of Sciences, Polymer Institute, Dubravska cesta 9, Bratislava, Slovakia.
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Godeau G, Bernard J, Staedel C, Barthélémy P. Glycosyl-nucleoside-lipid based supramolecular assembly as a nanostructured material with nucleic acid delivery capabilities. Chem Commun (Camb) 2009:5127-9. [PMID: 20448968 DOI: 10.1039/b906212b] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A glycosyl-nucleoside-lipid self-assembles to give highly organized structures such as fibers and nanotubes, which can stabilize hydrogels; carbohydrate moieties provide a suitable environment to deliver nucleic acids into human cells.
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Affiliation(s)
- Guilhem Godeau
- INSERM U869, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
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Kameta N, Minamikawa H, Masuda M, Mizuno G, Shimizu T. Controllable biomolecule release from self-assembled organic nanotubes with asymmetric surfaces: pH and temperature dependence. SOFT MATTER 2008; 4:1681-1687. [PMID: 32907162 DOI: 10.1039/b803742f] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The release behavior of fluorescent dyes, oligo DNAs and spherical proteins from self-assembled organic nanotubes having 7-9 nm inner diameters has been studied in terms of novel nanocontainers with high-axial ratios. Both much smaller inner diameters and asymmetric inner and outer surfaces are characteristic of the nanotubes. The acid-dissociation constant (pKa) of the amino groups located at the inner surface and the thermal phase transition temperature (Tg-l) of the nanotube were evaluated based on the pH titration and variable-temperature circular dichroism (CD) spectroscopic experiments, respectively. Each guest was slowly released from both open ends of the nanotube under weak alkaline conditions (pH 8.5), as a result of the decrease in electrostatic attraction between the inner surface and the guests. Elevated temperatures above the obtained Tg-l converted the monolayer membrane of the nanotube from a solid state to a fluid one, promoting the remarkably fast release of the guests. The unique release properties of the nanotube as a nanocontainer with two terminal open ends were compared with those of liposomes that posses a closed hollow space covered with fluid bilayer membranes.
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Affiliation(s)
- Naohiro Kameta
- SORST, Japan Science and Technology Agency (JST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | - Hiroyuki Minamikawa
- SORST, Japan Science and Technology Agency (JST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan. and Nanoarchitectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Mitsutoshi Masuda
- SORST, Japan Science and Technology Agency (JST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan. and Nanoarchitectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Go Mizuno
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Toshimi Shimizu
- SORST, Japan Science and Technology Agency (JST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan. and Nanoarchitectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Abstract
To date, a wide range of industrial materials such as solvents, fuels, synthetic fibers, and chemical products are being manufactured from petroleum resources. However, rapid depletion of fossil and petroleum resources is encouraging current and future chemists to orient their research toward designing safer chemicals, products, and processes from renewable feedstock with an increased awareness of environmental and industrial impact. Advances in genetics, biotechnology, process chemistry, and engineering are leading to a new manufacturing concept for converting renewable biomass to valuable fuels and products, generally known as the biorefinery concept. The swift integration of crop-based materials synthesis and biorefinery manufacturing technologies offers the potential for new advances in sustainable energy alternatives and biomaterials that will lead to a new manufacturing paradigm. This Account presents a novel and emerging concept of generating various forms of soft materials from crops (an alternate feedstock). In future research, developing biobased soft materials will be a fascinating yet demanding practice, which will have direct impact on industrial applications as an economically viable alternative. Here we discuss some remarkable examples of glycolipids generated from industrial byproducts such as cashew nut shell liquid, which upon self-assembly produced soft nanoarchitectures including lipid nanotubes, twisted/helical nanofibers, low-molecular-weight gels, and liquid crystals. Synthetic methods applied to a "chiral pool" of carbohydrates using the selectivity of enzyme catalysis yield amphiphilic products derived from biobased feedstock including amygdalin, trehalose, and vitamin C. This has been achieved with a lipase-mediated regioselective synthetic procedure to obtain such amphiphiles in quantitative yields. Amygdalin amphiphiles showed unique gelation behavior in a broad range of solvents such as nonpolar hexanes to polar aqueous solutions. Importantly, an enzyme triggered drug-delivery model for hydrophobic drugs was demonstrated by using these supramolecularly assembled hydrogels. Following a similar biocatalytic approach, vitamin C amphiphiles were synthesized with different hydrocarbon chain lengths, and their ability to self-assemble into molecular gels and liquid crystals has been studied in detail. Such biobased soft materials were successfully used to develop novel organic-inorganic hybrid materials by in situ synthesis of metal nanoparticles. The self-assembled soft materials were characterized by several spectroscopic techniques, UV-visible, infrared, and fluorescence spectrophotometers, as well as microscopic methods including polarized optical, confocal, scanning, and transmission electron microscopes, and thermal analysis. The molecular packing of the hierarchically assembled bilayer membranes was fully elucidated by X-ray analysis. We envision that the results summarized in this Account will encourage interdisciplinary collaboration between scientists in the fields of organic synthesis, soft materials research, and green chemistry to develop functional materials from underutilized crop-based renewable feedstock, with innovation driven both by material needs and environmentally benign design principles.
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Affiliation(s)
- Praveen Kumar Vemula
- Department of Chemistry, The City College of New York, and The Graduate School and University Center, The City University of New York, New York, New York 10031
| | - George John
- Department of Chemistry, The City College of New York, and The Graduate School and University Center, The City University of New York, New York, New York 10031
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Cho EJ, Kang JK, Han WS, Jung JH. Stimuli-responsive supramolecular nanostructure from amphiphilic calix[4]arene and its three-dimensional dendritic silver nanostructure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:5229-5232. [PMID: 18407680 DOI: 10.1021/la800208w] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We synthesized a tetrameric amphiphilic molecule ( 1) based on a calix[4]arene building block that self-assembled into different tunable and stable aggregation structures at different pH values in aqueous solution. The amphiphilic calix[4]arene molecule ( 1) formed a spherical structure at pH 3. However, 1 formed a hollow necklacelike structure of 500 nm diameter at pH 7. These results indicate that the self-assembled morphologies of 1 are strongly dependent on pH values. In addition, a 3D dendritic silver nanostructure was obtained by the self-assembly of 1 at pH 7.
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Affiliation(s)
- Eun Jin Cho
- Department of Materials Science and Engineering, KAIST, Daejeon 305-701, South Korea
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Kameta N, Masuda M, Mizuno G, Morii N, Shimizu T. Supramolecular nanotube endo sensing for a guest protein. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:561-5. [PMID: 18384039 DOI: 10.1002/smll.200700710] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Naohiro Kameta
- SORST, Japan Science and Technology Agency (JST) Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
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29
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Lee SJ, Kim E, Seo ML, Do Y, Lee YA, Lee SS, Jung JH, Kogiso M, Shimizu T. Self-assembled helical ribbon and tubes of alanine-based amphiphiles induced by two different formation mechanisms. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.062] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Yadav JS, Gupta MK, Prathap I, Bhadra MP, Mohan PK, Jagannadh B. Synthesis and cellular uptake of cell delivering 2,6-pyridinediylbisalkanamide submicron-sized sheets in hela cells. Chem Commun (Camb) 2007:3832-4. [PMID: 18217662 DOI: 10.1039/b706371g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2,6-Pyridinediylbisalkanamides were synthesized, using diaminopyridine (DAP) as a linker and alkyl chains of varying lengths, that upon self-assembly form submicron-sized sheets and their uptake into the cytoplasm of HeLa cells was studied by confocal microscopy.
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Affiliation(s)
- J S Yadav
- Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500007, India.
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33
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Kameta N, Mizuno G, Masuda M, Minamikawa H, Kogiso M, Shimizu T. Molecular Monolayer Nanotubes Having 7–9 nm Inner Diameters Covered with Different Inner and Outer Surfaces. CHEM LETT 2007. [DOI: 10.1246/cl.2007.896] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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34
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Fang J. Ordered arrays of self-assembled lipid tubules: fabrication and applications. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b705350a] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Huang KW, Wang JH, Chen HC, Hsu HC, Chang YC, Lu MY, Lee CY, Chen LJ. Supramolecular nanotubes with high thermal stability: a rigidity enhanced structure transformation induced by electron-beam irradiation and heat. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b618446d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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John G, Vemula PK. Design and development of soft nanomaterials from biobased amphiphiles. SOFT MATTER 2006; 2:909-914. [PMID: 32680178 DOI: 10.1039/b609422h] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Design and development of different forms of soft matter from renewable (biomass) feedstocks is gaining attention in current research. This highlight summarizes our continuing efforts towards the effective utilization of renewable resources for new chemicals, fuels and soft materials, and selected successful stories in that direction. Cashew nut shell liquid, an industrial by-product, was used as a raw material to synthesize aryl glycolipids which upon self-assembly generated an array of soft materials such as lipid nanotubes, twisted/helical nanofibers, low-molecular-weight hydro/organogels and liquid crystals. These soft architectures were fully characterized by using different techniques. In another example, amygdalin, a by-product of the apricot industry, was used to develop novel amphiphiles, which showed unprecedented gelation properties in a wide range of solvents. To take these soft nanomaterials to a second level, we successfully demonstrated the utility of these hydrogels as drug delivery vehicles. Intriguingly, enzyme catalysis was used as a tool to make and break the hydrogels, which apparently triggered controlled drug delivery. We believe these results and this highlight will motivate us and others in the field of biobased materials research, green chemistry and soft material development through self-assembly processes, to design and develop new functional materials from plant/crop-based renewable resources, otherwise underutilized.
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Affiliation(s)
- George John
- Department of Chemistry, The City College of New York, and The Graduate School and University Center of The City University of New York, New York, NY 10031.
| | - Praveen Kumar Vemula
- Department of Chemistry, The City College of New York, and The Graduate School and University Center of The City University of New York, New York, NY 10031.
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37
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Striolo A. Colloidal brushes in complex solutions: existence of a weak midrange attraction due to excluded-volume effects. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2006; 74:041401. [PMID: 17155051 DOI: 10.1103/physreve.74.041401] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2006] [Indexed: 05/12/2023]
Abstract
Towards the prediction of thermodynamic properties for complex systems and the design of self-assembly techniques for the production of nanocomposite materials, we employ Monte Carlo simulations to calculate the effective interactions between colloidal brushes dissolved in nonadsorbing polymer solutions. For simplicity, all interactions are reduced to excluded-volume potentials. Our results indicate that (1) due to excluded-volume effects and the absence of attractive van der Waals forces in our calculations, the effective interactions between colloidal brushes in a continuum medium are always repulsive; and (2) that the short-ranged repulsion between the colloidal brushes may be coupled to a midrange attraction when nonadsorbing polymers are in solution. We prove that a depletion mechanism is responsible for the midranged attraction and we observe that the strength of the induced attraction is weaker compared to the depletion attraction computed for hard-sphere colloids in nonadsorbing polymer solutions. More interestingly, however, our results indicate that, even for the simple interaction potentials employed here, it is not possible to superimpose depletion attraction and steric repulsion to predict the correct pair potential between colloidal brushes in nonadsorbing polymer solutions.
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Affiliation(s)
- Alberto Striolo
- School of Chemical Biological and Materials Engineering, The University of Oklahoma, Norman, Oklahoma 73019, USA.
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38
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Jung JH, Do Y, Lee YA, Shimizu T. Self-assembling structures of long-chain sugar-based amphiphiles influenced by the introduction of double bonds. Chemistry 2006; 11:5538-44. [PMID: 16007691 DOI: 10.1002/chem.200401288] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nine phenyl glucoside or galactoside amphiphiles possessing a saturated or unsaturated long alkyl-chain group as the self-assembling unit of a highly organized molecular architecture were synthesized. Their self-assembly properties were investigated by using energy-filtering TEM (EF-TEM), SEM, CD, XRD, and FT-IR techniques. Compound 2, possessing one cis double bond in the lipophilic portion, exhibited twisted helical fibers, which formed a bilayered structure with a 3.59 nm period, while 3 exhibited helical ribbons and left-handed nanotubular structures with 150-200 nm inner diameters and a wall thickness of approximately 20 nm. Very interestingly, 4, possessing three cis double bonds, exhibited a nanotubular structure with an inner diameter of approximately 70 nm and a d spacing value of 4.62 nm. On the other hand, 7, possessing two trans double bonds in the lipophilic region, exhibited crystal- or plate-like structures, which formed a bilayer structure with a d spacing value of 3.93 nm. These results indicate that the self-assembly properties are strongly dependent on the type of double bond. Furthermore, 8 and 9, with the galactopyranose moiety, revealed helical ribbon and well-defined double helical fiber structures, respectively. These findings support the view that the orientation of the intermolecular hydrogen-bonding interaction between the sugar moieties plays a critical role in producing the nanotubular structures. According to CD and powder XRD experiments, the relatively strong intermolecular hydrogen-bonding interaction of the glucopyranoside moiety in 3 and 4 provided a highly ordered chiral packing structure. Even though these compounds formed a weak hydrophobic interaction between lipophilic groups, it led to the formation of the nanotubular structure.
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Affiliation(s)
- Jong Hwa Jung
- CREST, Japan Science and Technology Corporation, Nanoarchitectonics Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 4, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan.
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39
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Vemula PK, Li J, John G. Enzyme Catalysis: Tool to Make and Break Amygdalin Hydrogelators from Renewable Resources: A Delivery Model for Hydrophobic Drugs. J Am Chem Soc 2006; 128:8932-8. [PMID: 16819889 DOI: 10.1021/ja062650u] [Citation(s) in RCA: 248] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a novel approach for the controlled delivery of an antiinflammatory, chemopreventive drug by an enzyme-triggered drug release mechanism via the degradation of encapsulated hydrogels. The hydro- and organogelators are synthesized in high yields from renewable resources by using regioselective enzyme catalysis, and a known chemopreventive and antiinflammatory drug, i.e., curcumin, is used for the model study. The release of the drug occurred at physiological temperature, and control of the drug release rate is achieved by manipulating the enzyme concentration and/or temperature. The byproducts formed after the gel degradation were characterized and clearly demonstrated the site specificity of degradation of the gelator by enzyme catalysis. The present approach could have applications in developing cost-effective controlled drug delivery vehicles from renewable resources, with a potential impact on pharmaceutical research and molecular design and delivery strategies.
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Affiliation(s)
- Praveen Kumar Vemula
- Department of Chemistry, The City College of New York, and The Graduate School and University Center of The City University of New York, New York, New York 10031, USA
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Liu A, Watanabe T, Honma I, Wang J, Zhou H. Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor. Biosens Bioelectron 2006; 22:694-9. [PMID: 16564686 DOI: 10.1016/j.bios.2006.02.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2005] [Revised: 01/27/2006] [Accepted: 02/08/2006] [Indexed: 10/24/2022]
Abstract
The optimal conditions to prepare water-soluble, stable poly(acrylic acid)-wrapped multiwalled carbon nanotubes (PAA-MWNTs) complex is presented. PAA-MWNTs shows high stability within weak acid to weak basic pH condition. The complex also shows good endurance to moderate ionic strengths in the buffer solution. The PAA-MWNTs complex film-covered electrode demonstrates stable, excellent electrocatalytic activity to oxidize NADH, which makes it possible to prepare NADH sensor at a low potential of approximately 0.13 V (versus Ag/AgCl) with the linear range of 4-100 microM by differential pulse voltammetry.
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Affiliation(s)
- Aihua Liu
- Nano-Energy Materials Group, Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba 305-8568, Japan.
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41
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Zhao Y, Mahaja N, Fang J. Self-assembled cylindrical lipid tubules with a birefringent core. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2006; 2:364-7. [PMID: 17193051 DOI: 10.1002/smll.200500430] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- Yue Zhao
- Advanced Materials Processing and Analysis Center and Department of Mechanical Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USA
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42
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Zhao Y, Mahajan N, Fang J. Bending and Radial Deformation of Lipid Tubules on Self-Assembled Thiol Monolayers. J Phys Chem B 2006; 110:22060-3. [PMID: 17078640 DOI: 10.1021/jp0550199] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lipid tubules represent a hollow, cylindrical supramolecular structure formed by rolled-up lipid bilayers. We find that the lipid tubules of 1,2-bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphocholine can be bent into a loopike shape by the shrinking contact line of droplets on self-assembled monolayers (SAMs) of 1-dodecanethiol. The persistence length of individual lipid tubules is estimated to be approximately 41 microm. The radial deformation of the lipid tubules on SAMs is studied under applied load using atomic force microscope. The stiffness of the tubules in the radial direction is found to increase when the number of the lipid bilayers in the tubule wall increases.
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Affiliation(s)
- Yue Zhao
- Advanced Materials Processing and Analysis Center and Department of Mechanical, Materials, and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816, USA
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43
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Liu B, Qian DJ, Chen M, Wakayama T, Nakamura C, Miyake J. Metal-mediated coordination polymer nanotubes of 5,10,15,20-tetrapyridylporphine and tris(4-pyridyl)-1,3,5-triazine at the water–chloroform interface. Chem Commun (Camb) 2006:3175-7. [PMID: 17028734 DOI: 10.1039/b606967c] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination polymer nanotubes have been prepared by using the Hg2+-mediated co-assembly of two ligands, tetrapyridylporphine (TPyP) and tris(4-pyridyl)-1,3,5-triazine (TPyTa), at the water-chloroform interface.
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Affiliation(s)
- Bing Liu
- Department of Chemistry and Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, China
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44
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Bhattacharya S, Bajaj A. Recent advances in lipid molecular design. Curr Opin Chem Biol 2005; 9:647-55. [PMID: 16257570 DOI: 10.1016/j.cbpa.2005.10.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2005] [Accepted: 10/13/2005] [Indexed: 11/23/2022]
Abstract
The area of lipid molecular design is attracting widespread interest among numerous research groups worldwide. Diverse lipid assemblies in aqueous media, such as vesicles, bilayers and nanorods, offer new applications in chemical biology. Lipids with specifically tailored molecular architecture have been successfully employed as gene delivery vehicles, for controlled drug release and the preparation of supramolecular gels. Such molecular design of lipids, as well as their characterization upon membrane formation, offers an insight into the possible molecular basis of their properties. This in turn helps in the design of further generations of lipid systems with more predictable characteristics. Here, we present an overview of the current trends in lipid design and their utilization in various biochemical, physical and chemical applications.
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Affiliation(s)
- Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore - 560012, India.
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45
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Zhu H, John G, Wei B. Synthesis of assembled copper nanoparticles from copper-chelating glycolipid nanotubes. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.01.126] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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