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Kalaw JM, Shigemitsu H, Kida T. 2- O-Methylated β-Cyclodextrin as an Effective Building Block to Construct Supramolecular Assemblies with Various Morphologies and Molecular Arrangements. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8407-8415. [PMID: 35762563 DOI: 10.1021/acs.langmuir.2c00980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The preparation of supramolecular cyclodextrin (CD) assemblies and control of their assembly mode through guest inclusion in CD cavities have been actively studied. Contrarily, there are limited reports on the control of the assembly mode of guest-free CD molecules by external stimuli. Herein, we report the use of 2-O-methylated β-cyclodextrin (2-Me-β-CD) as an effective building block in fabricating supramolecular assemblies with diverse morphologies and molecular arrangements through assembly mode control by various stimuli, such as temperature and solvent. When methanol and diethyl carbonate were used as good and poor solvents, respectively, 2-Me-β-CD formed an amorphous assembly through solvent evaporation on a polyethylene terephthalate (PET) substrate. Increasing the drying temperature and using crystalline substrates, such as highly oriented pyrolytic graphite (HOPG) and sapphire, changed the assembly mode of 2-Me-β-CD to a head-to-tail channel assembly. However, when a 2-Me-β-CD/1-propanol solution was mixed with linear alkanes as a poor solvent, 2-Me-β-CD with head-to-head channel assembly was formed as a precipitate. Additionally, when the corresponding cyclic alkane was used as an alternative poor solvent, an organogel composed of 2-Me-β-CD with head-to-head channel assemblies was obtained. The organogel obtained became a precipitate composed of 2-Me-β-CD with cage-type assembly upon heating at 50 °C. Among the supramolecular assemblies fabricated in this study, the head-to-tail channel assembly is a rare molecular assembly of β-CD and its derivatives. It possesses a modified columnar cavity that has potential applications in molecular recognition and sensing.
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Affiliation(s)
- Justine M Kalaw
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Osaka, Japan
| | - Hajime Shigemitsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Osaka, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-1 Yamada-oka, Suita 565-0871, Osaka, Japan
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Osaka, Japan
| | - Toshiyuki Kida
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Osaka, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-1 Yamada-oka, Suita 565-0871, Osaka, Japan
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Yin J, Xie M, Wang J, Cui M, Zhu D, Su S, Fan C, Chao J, Li Q, Wang L. Gold-Nanoparticle-Mediated Assembly of High-Order DNA Nano-Architectures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200824. [PMID: 35523735 DOI: 10.1002/smll.202200824] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Constructing high-order DNA nano-architectures in large sizes is of critical significance for the application of DNA nanotechnology. Robust and flexible design strategies together with easy protocols to construct high-order large-size DNA nano-architectures remain highly desirable. In this work, the authors report a simple and versatile one-pot strategy to fabricate DNA architectures with the assistance of spherical gold nanoparticles modified with thiolated oligonucleotide strands (SH-DNA-AuNPs), which serve as "power strips" to connect various DNA nanostructures carrying complementary ssDNA strands as "plugs". By modulating the plug numbers and positions on each DNA nanostructure and the ratios between DNA nanostructures and AuNPs, the desired architectures are formed via the stochastic co-assembly of different modules. This SH-DNA-AuNP-mediated plug-in assembly (SAMPA) strategy offers new opportunities to drive macroscopic self-assembly to meet the demand of the fabrication of well-defined nanomaterials and nanodevices.
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Affiliation(s)
- Jue Yin
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
| | - Mo Xie
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
| | - Junke Wang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
| | - Meirong Cui
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
| | - Dan Zhu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
| | - Shao Su
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
| | - Chunhai Fan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jie Chao
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
| | - Qian Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, P. R. China
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Structural Insights into the Host-Guest Complexation between β-Cyclodextrin and Bio-Conjugatable Adamantane Derivatives. Molecules 2021; 26:molecules26092412. [PMID: 33919170 PMCID: PMC8122645 DOI: 10.3390/molecules26092412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/06/2021] [Accepted: 04/14/2021] [Indexed: 11/20/2022] Open
Abstract
Understanding the host–guest chemistry of α-/β-/γ- cyclodextrins (CDs) and a wide range of organic species are fundamentally attractive, and are finding broad contemporary applications toward developing efficient drug delivery systems. With the widely used β-CD as the host, we herein demonstrate that its inclusion behaviors toward an array of six simple and bio-conjugatable adamantane derivatives, namely, 1-adamantanol (adm-1-OH), 2-adamantanol (adm-2-OH), adamantan-1-amine (adm-1-NH2), 1-adamantanecarboxylic acid (adm-1-COOH), 1,3-adamantanedicarboxylic acid (adm-1,3-diCOOH), and 2-[3-(carboxymethyl)-1-adamantyl]acetic acid (adm-1,3-diCH2COOH), offer inclusion adducts with diverse adamantane-to-CD ratios and spatial guest locations. In all six cases, β-CD crystallizes as a pair supported by face-to-face hydrogen bonding between hydroxyl groups on C2 and C3 and their adjacent equivalents, giving rise to a truncated-cone-shaped cavity to accommodate one, two, or three adamantane derivatives. These inclusion complexes can be terminated as (adm-1-OH)2⊂CD2 (1, 2:2), (adm-2-OH)3⊂CD2 (2, 3:2), (adm-1-NH2)3⊂CD2 (3, 3:2), (adm-1-COOH)2⊂CD2 (4, 2:2), (adm-1,3-diCOOH)⊂CD2 (5, 1:2), and (adm-1,3-diCH2COOH)⊂CD2 (6, 1:2). This work may shed light on the design of nanomedicine with hierarchical structures, mediated by delicate cyclodextrin-based hosts and adamantane-appended drugs as the guests.
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Kunitake M, Tanoue R, Higuchi R, Yoshimoto S, Haraguchi R, Uemura S, Kimizuka N, Stieg AZ, Gimzewski JK. Monomolecular covalent honeycomb nanosheets produced by surface-mediated polycondensation between 1,3,5-triamino benzene and benzene-1,3,5-tricarbox aldehyde on Au(111). NANOSCALE ADVANCES 2020; 2:3202-3208. [PMID: 36134287 PMCID: PMC9417909 DOI: 10.1039/d0na00180e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/27/2020] [Indexed: 06/16/2023]
Abstract
Fabrication of a two-dimensional covalent network of honeycomb nanosheets comprising small 1,3,5-triamino benzene and benzene-1,3,5-tricarboxaldehyde aromatic building blocks was conducted on Au(111) in a pH-controlled aqueous solution. In situ scanning tunneling microscopy revealed a large defect-free and homogeneous honeycomb π-conjugated nanosheet at the Au(111)/liquid interface. An electrochemical potential dependence indicated that the nanosheets were the result of thermodynamic self-assembly based not only on the reaction equilibrium but also on the adsorption (partition) equilibrium, which was controlled by the building block surface coverage as a function of electrode potential.
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Affiliation(s)
- Masashi Kunitake
- Institute of Industrial Nanomaterials, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Ryota Tanoue
- Graduate School of Science and Technology, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Rintaro Higuchi
- Graduate School of Science and Technology, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Soichiro Yoshimoto
- Institute of Industrial Nanomaterials, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Ryusei Haraguchi
- Graduate School of Science and Technology, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Shinobu Uemura
- Faculty of Engineering and Design, Kagawa University 2217-20 Hayashi-cho Takamatsu Kagawa 761-0396 Japan
| | - Nobuo Kimizuka
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University 744 Moto-oka, Nishi-ku Fukuoka 819-0395 Japan
| | - Adam Z Stieg
- California NanoSystems Institute 570 Westwood Plaza Los Angeles CA 90095 USA
- WPI Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - James K Gimzewski
- California NanoSystems Institute 570 Westwood Plaza Los Angeles CA 90095 USA
- WPI Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
- Department of Chemistry and Biochemistry, University of California-Los Angeles 607 Charles E. Young Drive East Los Angeles CA 90095 USA
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5
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Kunitake M, Uemura S. Construction and Scanning Probe Microscopy Imaging of Two-dimensional Nanomaterials. CHEM LETT 2020. [DOI: 10.1246/cl.200080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masashi Kunitake
- Faculty of Advanced Science & Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Shinobu Uemura
- Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan
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6
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Adsorption behavior of β-cyclodextrin onto gold nanoparticles. J Mol Graph Model 2020; 94:107483. [DOI: 10.1016/j.jmgm.2019.107483] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/28/2019] [Accepted: 10/18/2019] [Indexed: 12/16/2022]
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7
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Kumari S, Sundar G, Saha SK. Binding Interaction of Gemini Surfactants with Nanotubes ofβ‐Cyclodextrin and Controlled Release of Guest Molecules: Effect of Spacer Chain Length and Concentration of Surfactants. ChemistrySelect 2019. [DOI: 10.1002/slct.201803998] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sunita Kumari
- Department of ChemistryBirla Institute of Technology & Science (BITS) PilaniPilani Campus, Pilani Rajasthan 333031 India
| | - Ganapathisubramanian Sundar
- Department of ChemistryBirla Institute of Technology & Science (BITS) PilaniHyderabad Campus, Jawahar Nagar Telangana 500078 India
| | - Subit K. Saha
- Department of ChemistryBirla Institute of Technology & Science (BITS) PilaniPilani Campus, Pilani Rajasthan 333031 India
- Department of ChemistryBirla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Telangana 500078 India
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8
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Karak S, Kumar S, Pachfule P, Banerjee R. Porosity Prediction through Hydrogen Bonding in Covalent Organic Frameworks. J Am Chem Soc 2018; 140:5138-5145. [DOI: 10.1021/jacs.7b13558] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Suvendu Karak
- Academy of Scientific and Innovative Research, New Delhi 110001, India
- Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Sushil Kumar
- Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Pradip Pachfule
- Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Rahul Banerjee
- Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741246, India
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9
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Theoretical study of an anti-Markovnikov addition reaction catalyzed by β-cyclodextrin. J Mol Model 2018; 24:77. [PMID: 29500625 DOI: 10.1007/s00894-018-3595-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 01/25/2018] [Indexed: 10/17/2022]
Abstract
β-Cyclodextrin (β-CD) has a hydrophilic exterior and a hydrophobic internal cavity, which allows it to form host-guest complexes with a wide range of guests, such as organics, inorganics, and biomolecules. The aforementioned features lead to an extensive range of applications of β-CD, as the properties of β-CD mean that it is environmentally friendly and can be recovered and reused without mass loss. Here, the β-CD-catalyzed anti-Markovnikov addition of styrene to thiophenol in the presence of aerial oxygen and in aqueous solution to give 1-phenyl-2-(phenylsulfanyl)-1-ethanol was studied using density functional theory (DFT) and the Hartree-Fock (HF) method. The optimal configuration of the inclusion complex of styrene and thiophenol within β-CD was obtained, which indicated that styrene and thiophenol enter from the secondary and primary hydroxyl ends of β-CD, respectively. Moreover, hydrogen bonding of β-CD with styrene and thiophenol contributes to the stability of the inclusion complex. An investigation of the charges from electrostatic potentials using a grid-based method (CHELPG) highlighted the distribution of atomic charges upon complexation. The reaction sites of styrene and thiophenol were determined based on electrostatic potentials (ESPs) and condensed dual descriptors. The calculated 1H nuclear magnetic resonance (1H NMR) spectrum of β-CD implied that the chemical shifts of its protons change and H3 and H5 move to higher fields upon complexation, while the calculated 13C nuclear magnetic resonance (13C NMR) spectrum of styrene suggested that this molecule is electrophilic. Graphical abstract ᅟ.
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Lü J, Cao R. Organische molekulare Gerüste mit extrinsischer Porosität: eine Plattform für die Kohlendioxid-Abscheidung und Speicherung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602116] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jian Lü
- State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences; Fuzhou 350002 Fujian (P.R. China
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation; College of Resources and Environment, Fujian Agriculture and Forestry University; Fuzhou 350002 Fujian (P.R. China
| | - Rong Cao
- State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences; Fuzhou 350002 Fujian (P.R. China
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11
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Porous Organic Molecular Frameworks with Extrinsic Porosity: A Platform for Carbon Storage and Separation. Angew Chem Int Ed Engl 2016; 55:9474-80. [DOI: 10.1002/anie.201602116] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Indexed: 11/07/2022]
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12
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13
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Li J, Wang X, Duan H, Wang Y, Bu Y, Luo C. Based on magnetic graphene oxide highly sensitive and selective imprinted sensor for determination of sunset yellow. Talanta 2016; 147:169-76. [DOI: 10.1016/j.talanta.2015.09.056] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/17/2015] [Accepted: 09/22/2015] [Indexed: 11/16/2022]
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14
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Lipid-bilayer-assisted two-dimensional self-assembly of DNA origami nanostructures. Nat Commun 2015; 6:8052. [PMID: 26310995 PMCID: PMC4560778 DOI: 10.1038/ncomms9052] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 07/10/2015] [Indexed: 12/21/2022] Open
Abstract
Self-assembly is a ubiquitous approach to the design and fabrication of novel supermolecular architectures. Here we report a strategy termed ‘lipid-bilayer-assisted self-assembly' that is used to assemble DNA origami nanostructures into two-dimensional lattices. DNA origami structures are electrostatically adsorbed onto a mica-supported zwitterionic lipid bilayer in the presence of divalent cations. We demonstrate that the bilayer-adsorbed origami units are mobile on the surface and self-assembled into large micrometre-sized lattices in their lateral dimensions. Using high-speed atomic force microscopy imaging, a variety of dynamic processes involved in the formation of the lattice, such as fusion, reorganization and defect filling, are successfully visualized. The surface modifiability of the assembled lattice is also demonstrated by in situ decoration with streptavidin molecules. Our approach provides a new strategy for preparing versatile scaffolds for nanofabrication and paves the way for organizing functional nanodevices in a micrometer space. Self-assembly is a useful method to fabricate novel supramolecular architectures. Here, the authors use lipid-bilayer-assisted self-assembly to obtain two-dimensional crystalline DNA origami lattices, imaging dynamic assembly phenomena using high-speed atomic force microscopy.
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Kunitake M, Higuchi R, Tanoue R, Uemura S. Self-assembled π-conjugated macromolecular architectures — A soft solution process based on Schiff base coupling. Curr Opin Colloid Interface Sci 2014. [DOI: 10.1016/j.cocis.2014.03.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Noguchi T, Kimizuka N. Spectroscopic readout of polyoxometalates' molecular information via self-assembly. Chem Commun (Camb) 2014; 50:599-601. [DOI: 10.1039/c3cc47300g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Thorgaard SN, Bühlmann P. Lifting of the surface reconstruction of Au(111) as a sensitive probe to monitor adsorption of cyclodextrin and its complexes in halide solutions. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Gu JY, Cui B, Chen T, Yan HJ, Wang D, Wan LJ. In situ scanning tunneling microscopy investigation of subphthalocyanine and subnaphthalocyanine adlayers on a Au(111) electrode. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:264-270. [PMID: 23227883 DOI: 10.1021/la3042742] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The adsorption behaviors of subphthalocyanine (SubPc) and subnaphthalocyanine (SubNc) on the Au(111) surface were investigated by electrochemical scanning tunneling microscopy (ECSTM). Two types of ordered adlayer structures of SubPc were observed at 550 mV versus the reversible hydrogen electrode (RHE). All of the SubPc molecules take the Cl-down adsorption configuration on Au(111) in both structures. The ordered adlayers exist in the potential range between 350 and 650 mV. The SubNc molecules adsorb on Au(111) in a less-ordered pattern than the SubPc molecules. The present work provides direct evidence for understanding the potential-controlled adsorption behaviors of SubPc and SubNc on the Au(111) surface.
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Affiliation(s)
- Jing-Ying Gu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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Ramirez-Gutierrez O, Claret J, Ribo JM. Cyclic voltammetry of water-soluble manganese porphyrins in the presence of cyclodextrins. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424605000460] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The addition of cyclodextrins (α-CD, β-CD, 2-hydroxopropyl-β-CD and γ-CD) to aqueous solutions of representative cationic ( MnTMPyP ) and anionic ( MnTPPS 4) water-soluble Mn porphyrins only substantially affect the behavior of the Mn (III)/ Mn (II) couple when inclusion complexes (i.e. for MnTPPS 4) are formed. The voltammetric responses were interpreted under the assumption that the inclusion complexes are electroactive, which occurs after their adsorption on the electrode surface. In addition, the results point to a higher affinity of the cyclodextrins for Mn II TPPS 4 than for Mn III TPPS 4.
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Affiliation(s)
- Oscar Ramirez-Gutierrez
- Department of Organic Chemistry, University of Barcelona, c. Martí i Franquès 1. Barcelona, 08028 Catalonia, Spain
| | - Josep Claret
- Department of Physical Chemistry, University of Barcelona, c. Martí i Franquès 1. Barcelona, 08028 Catalonia, Spain
| | - Josep M. Ribo
- Department of Organic Chemistry, University of Barcelona, c. Martí i Franquès 1. Barcelona, 08028 Catalonia, Spain
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Tanoue R, Higuchi R, Enoki N, Miyasato Y, Uemura S, Kimizuka N, Stieg AZ, Gimzewski JK, Kunitake M. Thermodynamically controlled self-assembly of covalent nanoarchitectures in aqueous solution. ACS NANO 2011; 5:3923-3929. [PMID: 21480643 DOI: 10.1021/nn200393q] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The pursuit of methods for design and preparation of robust nanoarchitectonic systems with integrated functionality through bottom-up methodologies remains a driving force in molecular nanotechnology. Through the use of π-conjugated covalent bonds, we demonstrate a general substrate-mediated, soft solution methodology for the preparation of extended π-conjugated polymeric nanoarchitectures in low-dimensions. Based on thermodynamic control over equilibrium polymerization at the solid-liquid interface whereby aromatic building blocks spontaneously and selectively link, close-packed arrays composed of one-dimensional (1-D) aromatic polymers and two-dimensional (2-D) macromolecular frameworks have been prepared and characterized by in situ scanning tunneling microscopy. This methodology eliminates the necessity for severe conditions and sophisticated equipment common to most current fabrication techniques and imparts almost infinite possibilities for the preparation of robust materials with designer molecular architectures.
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Affiliation(s)
- Ryota Tanoue
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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Uemura S, Aono M, Komatsu T, Kunitake M. Two-dimensional self-assembled structures of melamine and melem at the aqueous solution-Au(111) interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1336-1340. [PMID: 21126043 DOI: 10.1021/la103948n] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Self-assembled structures of melamine and the condensed melamine derivative melem were investigated at aqueous solution-Au(111) interfaces by cyclic voltammetry and in situ scanning tunneling microscopy (STM) observation. The adsorption/desorption behaviors of both molecules on Au(111) surfaces could be controlled by varying the electrochemical potential and solution concentration. In the negative potential region, self-assembled structures of melem and melamine were constructed by double hydrogen bonding systems between nitrogen atoms of triazine rings and amine groups. In addition, melem formed a closely packed structure at potentials of between -0.3 and -0.15 V or in solutions at higher concentrations.
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Affiliation(s)
- Shinobu Uemura
- Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
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Molecular Dynamics in Two-Dimensional Supramolecular Systems Observed by STM. MATERIALS 2010; 3:4252-4276. [PMID: 28883328 PMCID: PMC5445828 DOI: 10.3390/ma3084252] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 07/26/2010] [Accepted: 08/03/2010] [Indexed: 11/16/2022]
Abstract
Since the invention of scanning tunneling microscopy (STM), 2D supramolecular architectures have been observed under various experimental conditions. The construction of these architectures arises from the balance between interactions at the medium-solid interface. This review summarizes molecular motion observed in 2D-supramolecular structures on surfaces using nanospace resolution STM. The observation of molecular motion on surfaces provides a visual understanding of intermolecular interactions, which are the major driving force behind supramolecular arrangement.
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Thorgaard SN, Bühlmann P. Bromine-passivated Au(111) as a platform for the formation of organic self-assembled monolayers under electrochemical conditions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7133-7137. [PMID: 20095548 DOI: 10.1021/la904182p] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Self-assembled monolayers of 5,10,15,20-tetra(4-pyridyl)porphyrin (TPyP) were formed by equilibrium adsorption from a perchloric acid solution onto Au(111) using an interposed adlayer of bromide. The passivating bromide adlayer was generated by addition of 150 microM KBr to the electrochemical cell and allowed monolayer ordering at positive potentials where a disordered TPyP monolayer would be found on a bare Au(111) surface. The TPyP monolayers were characterized in situ with electrochemical scanning tunneling microscopy (EC-STM) and cyclic voltammetry. They were successfully observed at working electrode potentials between 0.0 and +1.3 V vs Ag/AgCl. This wide potential window of usability for the bromide adlayer extends to potentials more positive than what has been achieved for similar observations using iodide-modified Au(111). Within the TPyP monolayers, isolated domains with differing geometries could be distinguished, suggesting dynamic monolayer rearrangements. These results demonstrate that the presence of a passivating bromide adlayer is conducive to the formation of highly ordered organic monolayers. Indeed, bromide is not only one of the few anions that are suitable for this purpose, but it may be superior to the more frequently used iodide.
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Affiliation(s)
- Scott N Thorgaard
- Department of Chemistry, University of Minnesota, 207 Pleasant St SE, Minneapolis, Minnesota 55455, USA
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Chung JW, Kwak SY. Iron-induced cyclodextrin self-assembly into size-controllable nanospheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2418-2423. [PMID: 19810679 DOI: 10.1021/la9028645] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Iron-induced self-assembly of beta-cyclodextrin, beta-CD, into size controllable nanospheres with a well-defined spherical morphology and a relatively narrow size distribution was formed when acetone was added to a solution of beta-CD with iron(II) acetate, Fe(OAc)(2), in DMF. Thermogravimetric analysis, inductively coupled plasma atomic emission spectroscopy, and high resolution transmission electron microscopy showed that the irons were present as a well-dispersed state in the beta-CD nanospheres. In the (1)H NMR spectrum of the beta-CD/Fe(OAc)(2), beta/Fe, solution before adding acetone, the peaks corresponding to beta-CD were broadened and their spin-spin splitting had disappeared. In particular, the beta/Fe solutions were found to remain in a clean solution state at 1 week after solution preparation. These findings indicate the isolation of individual iron ions caused by the surrounding of each ion with the beta-CD molecules in the solution before the addition of acetone. X-ray crystal structure analysis, morphological observations, and N(2) adsorption and desorption experiments showed that the beta-CD nanospheres were generated by the formation of iron-embedded beta-CD primary particles with disordered cage type structure and simultaneous spherical assembly of the primary particles during the addition of acetone to the beta/Fe solution with appropriate mole ratio between beta-CD and Fe(OAc)(2). Interestingly, the size of the beta-CD nanospheres could be simply controlled by changing the speed at which acetone was added to the solution, with higher acetone addition speeds yielding smaller particles.
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Affiliation(s)
- Jae Woo Chung
- Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea
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Rossi S, Bonini M, Lo Nostro P, Baglioni P. Self-assembly of beta-cyclodextrin in water. 2. Electron spin resonance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:10959-67. [PMID: 17880112 DOI: 10.1021/la7011638] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The interaction of amphipilic spin labels with beta-cyclodextrin was investigated using conventional electron spin resonance (ESR) spectroscopy to explore the aggregation of cyclodextrins in water. Methyl 5-doxylstearate (5-DMS) and stearic acid spin probes (n-DSA), which contain a cyclic nitroxide moiety with unpaired electrons covalently linked to the aliphatic chain carbon in positions 5, 7, 12, and 16, show that different dynamic domains coexist in beta-CD water solutions above 3 mM. The results are consistent with the formation of beta-CD self-assembled structures in water above a critical aggregation concentration and confirm the previous findings that were reported in the part 1 article of this series.
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Affiliation(s)
- Simona Rossi
- Department of Chemistry and CSGI, University of Florence, 50019 Sesto Fiorentino, Italy
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Yan CJ, Yan HJ, Xu LP, Song WG, Wan LJ, Wang QQ, Wang MX. Adlayer structures of aza- and/or oxo-bridged calix[2]arene[2]triazines on Au(111) investigated by scanning tunneling microscopy (STM). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:8021-7. [PMID: 17569544 DOI: 10.1021/la070039i] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The adlayers formed by a series of aza- and/or oxo-bridged calix[2]arene[2]triazines on Au(111) surfaces were investigated by scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. 1,3-Alternate configurations of these molecules are preserved on gold surfaces as in their three-dimensional crystals. STM images show that the cavity sizes of these molecules are finely tuned by substituting the bridging nitrogen atom with oxygen atoms, which change the strengths and densities of the intermolecular hydrogen bonds. Hydrogen bond interaction influences the molecular orientation and conformation in the adlayers, and it plays a key role in the formation of these two-dimensional supramolecular architectures. Coadsorption of calix[2]arene[2]triazine with 1,3,5-tris(5-carboxyamyloxy)benzene (TCAB) intervenes with the intermolecular hydrogen bond formations among the calix[2]arene[2]triazine molecules and consequently causes a conformational transition of the calixarene molecules from rhombic to square. These results demonstrate the role of hydrogen bonds in molecular assembly formations.
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Affiliation(s)
- Cun-Ji Yan
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100080, China
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He Y, Fu P, Shen X, Gao H. Cyclodextrin-based aggregates and characterization by microscopy. Micron 2007; 39:495-516. [PMID: 17706427 DOI: 10.1016/j.micron.2007.06.017] [Citation(s) in RCA: 196] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Accepted: 06/04/2007] [Indexed: 11/27/2022]
Abstract
Cyclodextrin-based aggregates have been widely investigated with microscopies such as STM, AFM, SEM, TEM, and fluorescent microscopy to obtain the direct morphology and structure of samples. In the present review, we discuss various types of cyclodextrin aggregates, that is, native and modified cyclodextrins, inclusion complexes and their aggregates of cyclodextrins, cyclodextrin rotaxanes and polyrotaxanes, cyclodextrin nanotubes and their secondary assembly, and other high-order aggregates of cyclodextrins. Especially, we focus on the use of microscopy to characterize above aggregates. The application of modern microscopy tools promotes the investigation on cyclodextrins.
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Affiliation(s)
- Yifeng He
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
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Matsunaga S, Yokomori R, Ino D, Yamada T, Kawai M, Kobayshi T. EC-STM observation on electrochemical response of fluidic phospholipid monolayer on Au(111) modified with 1-octanethiol. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2006.10.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Wang H, Chen Y, Li XY, Liu Y. Synthesis of Oligo(ethylenediamino)-β-Cyclodextrin Modified Gold Nanoparticle as a DNA Concentrator. Mol Pharm 2007; 4:189-98. [PMID: 17256872 DOI: 10.1021/mp060045s] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel oligo(ethylenediamino)-beta-cyclodextrin-modified gold nanoparticle (OEA-CD-NP) was synthesized as a vector for DNA binding and comprehensively investigated by means of absorption and circular dichroism spectroscopies as well as transmission electron microscopy, and its plasmid transfection efficiency as a carrier into cultivated cells in vitro was also evaluated. Possessing many hydrophobic cavities at the outer space, OEA-CD-NP may have a capability of carrying biological and/or medicinal substrates into cells, which will make it potentially applicable in many fields of material science and biological technology. In contrast with OEA-CD-NP, the oligo(ethylenediamino)-lipoic amido-modified gold nanoparticle (OEA-L-NP) without CD was synthesized to investigate the interaction with DNA. The results showed that OEA-L-NPs could only weakly bind DNA.
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Affiliation(s)
- Hao Wang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, PR China
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Wu A, Shen X, He Y. Micrometer-sized rodlike structure formed by the secondary assembly of cyclodextrin nanotube. J Colloid Interface Sci 2006; 302:87-94. [PMID: 16797574 DOI: 10.1016/j.jcis.2006.05.065] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2006] [Revised: 04/11/2006] [Accepted: 05/28/2006] [Indexed: 11/28/2022]
Abstract
In this work, we report the observation on the self-assembly of beta-CD nanotube induced by 2-phenyl-5-(4-diphenylyl)1,3,4-oxadiazole (PBD) molecule with fluorescence microscopy and transmission electron microscopy (TEM). Micrometer-sized rodlike structure is formed by the secondary assembly of cyclodextrin nanotube driven by the inter-nanotubular hydrogen bonding. The effects of pH value, urea, DMF and NaCl on the formation of the rodlike structure are investigated. Dynamic light scattering (DLS) is applied to further characterize the formation of the PBD-beta-CD nanotube. The effect of light scattering on the measurement of fluorescence anisotropy of PBD in the aqueous solutions of beta-CD is corrected. A new mechanism of cyclodextrin aggregation is proposed for this system.
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Affiliation(s)
- Aihua Wu
- Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
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Yang GF, Wang HB, Yang WC, Gao D, Zhan CG. Formation of supramolecular permethrin/β-cyclodextrin nanorods. J Chem Phys 2006; 125:111104. [PMID: 16999459 DOI: 10.1063/1.2354079] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Molecular dynamics simulations along with scanning tunneling microscopy (STM) imaging demonstrate the formation of a novel type of nanorods, with a stable [permethrin(beta-CD)(2)](n) structure in which the host:guest ratio is 2:1 and n=21-27 giving a length of approximately 30.0-38.5 nm and an average diameter of approximately 1.5 nm, self-assembled from an inclusion complex composed of permethrin and biocompatible beta-cyclodextrin.
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Affiliation(s)
- Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology of the Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, People's Republic of China
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Kunitake M, Hattori T, Miyano S, Itaya K. Two-dimensional supramolecular arrangements of enantiomers and racemic modification of 1,1'-binaphthyl-2,2'-dicarboxylic acid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:9206-10. [PMID: 16171353 DOI: 10.1021/la051040p] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Formation of adlayers of the optically active compound 1,1'-binaphthyl-2, 2'-dicarboxylic acid (BINAC) on iodine-modified Au (111) surfaces in perchloric acid was investigated by in situ scanning tunneling microscopy (STM). Highly ordered arrays formed on the surfaces via simple spontaneous adsorption from a solution of enantiomers or the racemic BINAC, in spite of the fact that BINAC has a three-dimensionally complex stereochemical structure. Adlayers of both enantiomers essentially shared the same enantiomorphous structure. Observed parameters of the rectangular unit cell lattice for arrays of both enantiomers of BINAC were a = 2.3 +/- 0.2 nm and b = 0.7 +/- 0.2 nm. On the other hand, racemic modification formed an entirely different adlayer, which consisted of an alternate alignment of the two enantiomers, with an oblique unit cell lattice with parameters of a = 1.2 +/- 0.2 nm, b = 0.8 +/- 0.1 nm, and 74 +/- 3 degrees . No domain composed of a single enantiomer was observed. The stronger hetero-intermolecular interactions of enantiomer couples led to the formation of an alternate arrangement in the array prepared by racemic modification.
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Affiliation(s)
- Masashi Kunitake
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, Kurokami, Kumamoto 860-8555, Japan.
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Girardeau TE, Leisen J, Beckham HW. Chain Dynamics of Poly(oxyethylene) in Nanotubes ofα-Cyclodextrin by Solid-State2H NMR. MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200500095] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sakurai SI, Ohira A, Suzuki Y, Fujito R, Nishimura T, Kunitake M, Yashima E. Synthesis and property of helical poly(phenylacetylene)s bearing chiral ruthenium complexes and real space imaging of meso- and nanoscopic structures by atomic force microscopy. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20357] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ohmura M, Kawahara Y, Okude K, Hasegawa Y, Hayashida M, Kurimoto R, Kawaguchi A. Electron microscopic observations of inclusion complexes of α-, β-, and γ-cyclodextrins. POLYMER 2004. [DOI: 10.1016/j.polymer.2004.07.063] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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Liu Y, Zhao YL, Zhang HY, Li XY, Liang P, Zhang XZ, Xu JJ. Supramolecular Polypseudorotaxane with Conjugated Polyazomethine Prepared Directly from Two Inclusion Complexes of β-Cyclodextrin with Tolidine and Phthaldehyde. Macromolecules 2004. [DOI: 10.1021/ma0356717] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Liu
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Photonics Research Center Collage of Physics Science, Nankai University, Tianjin 300071, P. R. China
| | - Yan-Li Zhao
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Photonics Research Center Collage of Physics Science, Nankai University, Tianjin 300071, P. R. China
| | - Heng-Yi Zhang
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Photonics Research Center Collage of Physics Science, Nankai University, Tianjin 300071, P. R. China
| | - Xiao-Yun Li
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Photonics Research Center Collage of Physics Science, Nankai University, Tianjin 300071, P. R. China
| | - Peng Liang
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Photonics Research Center Collage of Physics Science, Nankai University, Tianjin 300071, P. R. China
| | - Xin-Zheng Zhang
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Photonics Research Center Collage of Physics Science, Nankai University, Tianjin 300071, P. R. China
| | - Jing-Jun Xu
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Photonics Research Center Collage of Physics Science, Nankai University, Tianjin 300071, P. R. China
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Liu Y, Song Y, Wang H, Zhang HY, Li XQ. Bis(polypseudorotaxane)s Formed by Multiple Metallo-Bridged β-Cyclodextrins and the Thermodynamic Origin of Their Molecular Aggregation. Macromolecules 2004. [DOI: 10.1021/ma049929k] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu Liu
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Yun Song
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Hao Wang
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Heng-Yi Zhang
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xue-Qing Li
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
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