1
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Xu C, Lin Q, Shan C, Han X, Wang H, Wang H, Zhang W, Chen Z, Guo C, Xie Y, Yu X, Song B, Song H, Wojtas L, Li X. Metallo‐Supramolecular Octahedral Cages with Three Types of Chirality towards Spontaneous Resolution. Angew Chem Int Ed Engl 2022; 61:e202203099. [DOI: 10.1002/anie.202203099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Indexed: 12/11/2022]
Affiliation(s)
- Chen Xu
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212100 China
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Quanjie Lin
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Chuan Shan
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Xin Han
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
- College of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou Henan 450001 China
| | - Hao Wang
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212100 China
| | - Heng Wang
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
- Shenzhen University General Hospital Shenzhen University Clinical Medical Academy Shenzhen Guangdong 518071 China
| | - Wenjing Zhang
- College of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou Henan 450001 China
| | - Zhi Chen
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Yinghao Xie
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Xiujun Yu
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Bo Song
- Department of Chemistry Northwestern University Evanston IL 60208 USA
| | - Heng Song
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212100 China
| | - Lukasz Wojtas
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
- Shenzhen University General Hospital Shenzhen University Clinical Medical Academy Shenzhen Guangdong 518071 China
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2
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Xu C, Lin Q, Shan C, Han X, Wang H, Wang H, Zhang W, Chen Z, Guo C, Xie Y, Yu X, Song B, Song H, Wojtas L, Li X. Metallo‐Supramolecular Octahedral Cages with Three Types of Chirality towards Spontaneous Resolution. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chen Xu
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212100 China
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Quanjie Lin
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Chuan Shan
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Xin Han
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
- College of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou Henan 450001 China
| | - Hao Wang
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212100 China
| | - Heng Wang
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
- Shenzhen University General Hospital Shenzhen University Clinical Medical Academy Shenzhen Guangdong 518071 China
| | - Wenjing Zhang
- College of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou Henan 450001 China
| | - Zhi Chen
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Yinghao Xie
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Xiujun Yu
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
| | - Bo Song
- Department of Chemistry Northwestern University Evanston IL 60208 USA
| | - Heng Song
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212100 China
| | - Lukasz Wojtas
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China
- Shenzhen University General Hospital Shenzhen University Clinical Medical Academy Shenzhen Guangdong 518071 China
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3
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Gong X, Shuai L, Beingessner RL, Yamazaki T, Shen J, Kuehne M, Jones K, Fenniri H, Strano MS. Size Selective Corona Interactions from Self-Assembled Rosette and Single-Walled Carbon Nanotubes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104951. [PMID: 35060337 DOI: 10.1002/smll.202104951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 11/24/2021] [Indexed: 06/14/2023]
Abstract
Nanoparticle corona phases, especially those surrounding anisotropic particles, are central to determining their catalytic, molecular recognition, and interfacial properties. It remains a longstanding challenge to chemically synthesize and control such phases at the nanoparticle surface. In this work, the supramolecular chemistry of rosette nanotubes (RNTs), well-defined hierarchically self-assembled nanostructures formed from heteroaromatic bicyclic bases, is used to create molecularly precise and continuous corona phases on single-walled carbon nanotubes (SWCNTs). These RNT-SWCNT (RS) complexes exhibit the lowest solvent-exposed surface area (147.8 ± 60 m-1 ) measured to date due to its regular structure. Through Raman spectroscopy, molecular-scale control of the free volume is also observed between the two annular structures and the effects of confined water. SWCNT photoluminescence (PL) within the RNT is also modulated considerably as a function of their diameter and chirality, especially for the (11, 1) species, where a PL increase compared to other species can be attributed to their chiral angle and the RNT's inward facing electron densities. In summary, RNT chemistry is extended to the problem of chemically defining both the exterior and interior corona interfaces of an encapsulated particle, thereby opening the door to precision control of core-shell nanoparticle interfaces.
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Affiliation(s)
- Xun Gong
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 66, Cambridge, MA, 02139, USA
| | - Liang Shuai
- National Institute for Nanotechnology and Department of Chemistry, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta, T6G2M9, Canada
| | - Rachel L Beingessner
- National Institute for Nanotechnology and Department of Chemistry, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta, T6G2M9, Canada
| | - Takeshi Yamazaki
- National Institute for Nanotechnology and Department of Chemistry, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta, T6G2M9, Canada
| | - Jianliang Shen
- Wenzhou Institute, University of Chinese Academy of Sciences, No.16 Xinsan Road, Hi-tech Industry Park, Wenzhou, Zhejiang, 325000, China
| | - Matthias Kuehne
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 66, Cambridge, MA, 02139, USA
| | - Kelvin Jones
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 66, Cambridge, MA, 02139, USA
| | - Hicham Fenniri
- Department of Chemical Engineering, Department of Bioengineering, Department of Chemistry and Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115-5000, USA
| | - Michael S Strano
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 66, Cambridge, MA, 02139, USA
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4
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Chamorro PB, Aparicio F. Chiral nanotubes self-assembled from discrete non-covalent macrocycles. Chem Commun (Camb) 2021; 57:12712-12724. [PMID: 34749387 DOI: 10.1039/d1cc04968b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Many strategies have been used to construct supramolecular hollow tubes, including helical folding of oligomers, bundling of rod-like structures, rolling-up of sheets and stacking of covalent cycles. On the other hand, controlling chirality at the supramolecular level continues attracting much interest because of its implications in future applications of porous systems. This review article covers the main examples in the literature that use simple molecular structures as chiral units for precise assembly into discrete non-covalent cyclic structures that are able to form chiral supramolecular tubular systems.
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Affiliation(s)
- P B Chamorro
- Nanostructured Molecular Systems and Materials (MSMn) Group, Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - F Aparicio
- Nanostructured Molecular Systems and Materials (MSMn) Group, Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
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5
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Schuster GB, Cafferty BJ, Karunakaran SC, Hud NV. Water-Soluble Supramolecular Polymers of Paired and Stacked Heterocycles: Assembly, Structure, Properties, and a Possible Path to Pre-RNA. J Am Chem Soc 2021; 143:9279-9296. [PMID: 34152760 DOI: 10.1021/jacs.0c13081] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The hypothesis that RNA and DNA are products of chemical and biological evolution has motivated our search for alternative nucleic acids that may have come earlier in the emergence of life-polymers that possess a proclivity for covalent and non-covalent self-assembly not exhibited by RNA. Our investigations have revealed a small set of candidate ancestral nucleobases that self-assemble into hexameric rosettes that stack in water to form long, twisted, rigid supramolecular polymers. These structures exhibit properties that provide robust solutions to long-standing problems that have stymied the search for a prebiotic synthesis of nucleic acids. Moreover, their examination by experimental and computational methods provides insight into the chemical and physical principles that govern a particular class of water-soluble one-dimensional supramolecular polymers. In addition to efficient self-assembly, their lengths and polydispersity are modulated by a wide variety of positively charged, planar compounds; their assembly and disassembly are controlled over an exceedingly narrow pH range; they exhibit spontaneous breaking of symmetry; and homochirality emerges through non-covalent cross-linking during hydrogel formation. Some of these candidate ancestral nucleobases spontaneously form glycosidic bonds with ribose and other sugars, and, most significantly, functionalized forms of these heterocycles form supramolecular structures and covalent polymers under plausibly prebiotic conditions. This Perspective recounts a journey of discovery that continues to reveal attractive answers to questions concerning the origins of life and to uncover the principles that control the structure and properties of water-soluble supramolecular polymers.
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Affiliation(s)
- Gary B Schuster
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,NSF-NASA Center for Chemical Evolution, Atlanta, Georgia 30332, United States
| | - Brian J Cafferty
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,NSF-NASA Center for Chemical Evolution, Atlanta, Georgia 30332, United States
| | - Suneesh C Karunakaran
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,NSF-NASA Center for Chemical Evolution, Atlanta, Georgia 30332, United States
| | - Nicholas V Hud
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,NSF-NASA Center for Chemical Evolution, Atlanta, Georgia 30332, United States
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6
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Wu B, Wu H, Zhou Y, Zheng D, Jia X, Fang L, Zhu L. Controlling Ultra-Large Optical Asymmetry in Amorphous Molecular Aggregations. Angew Chem Int Ed Engl 2021; 60:3672-3678. [PMID: 33119201 DOI: 10.1002/anie.202012224] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/19/2020] [Indexed: 11/10/2022]
Abstract
Although ultra-large optical asymmetry appears in crystalline materials, distractions from the mesoscopic ordering often causes inauthenticity in chiropticity. In amorphous materials, however, it remains challenging and elusive to achieve large chiropticity. Herein, we report the quantitative control of chiral amplification, on amorphous supramolecular structures of cholesteryl-linked bis(dipyrrinato)zinc(II), to an exceptionally high level. A proper chiral packing of the building block at several molecular scale considerably contributes to the absorptive dissymmetry factor gabs , although the system is overall disordered. The intense and tunable aggregation strength renders a variable gabs value up to +0.10 and +0.31 in the solution and in film state. On this basis, a superior ON-OFF switching of chiropticity is realized under external stimuli. This work establishes a general design principle to control over ultra-large optical asymmetry on a wider scope of chiral materials.
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Affiliation(s)
- Bin Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Hongwei Wu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Yunyun Zhou
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Dongxiao Zheng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Xiaoyong Jia
- Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, 475004, China
| | - Lei Fang
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX, 77843, USA
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
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7
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Miao S, Liang Y, Rundell S, Bhunia D, Devari S, Munyaradzi O, Bong D. Unnatural bases for recognition of noncoding nucleic acid interfaces. Biopolymers 2021; 112:e23399. [PMID: 32969496 PMCID: PMC7855516 DOI: 10.1002/bip.23399] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/14/2020] [Accepted: 08/25/2020] [Indexed: 12/20/2022]
Abstract
The notion of using synthetic heterocycles instead of the native bases to interface with DNA and RNA has been explored for nearly 60 years. Unnatural bases compatible with the DNA/RNA coding interface have the potential to expand the genetic code and co-opt the machinery of biology to access new macromolecular function; accordingly, this body of research is core to synthetic biology. While much of the literature on artificial bases focuses on code expansion, there is a significant and growing effort on docking synthetic heterocycles to noncoding nucleic acid interfaces; this approach seeks to illuminate major processes of nucleic acids, including regulation of transcription, translation, transport, and transcript lifetimes. These major avenues of research at the coding and noncoding interfaces have in common fundamental principles in molecular recognition. Herein, we provide an overview of foundational literature in biophysics of base recognition and unnatural bases in coding to provide context for the developing area of targeting noncoding nucleic acid interfaces with synthetic bases, with a focus on systems developed through iterative design and biophysical study.
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Affiliation(s)
- Shiqin Miao
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
| | - Yufeng Liang
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
| | - Sarah Rundell
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
| | - Debmalya Bhunia
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
| | - Shekar Devari
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
| | - Oliver Munyaradzi
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
| | - Dennis Bong
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA
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8
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Wu B, Wu H, Zhou Y, Zheng D, Jia X, Fang L, Zhu L. Controlling Ultra‐Large Optical Asymmetry in Amorphous Molecular Aggregations. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012224] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bin Wu
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
| | - Hongwei Wu
- College of Chemistry, Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China
| | - Yunyun Zhou
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
| | - Dongxiao Zheng
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
| | - Xiaoyong Jia
- Henan Key Laboratory of Photovoltaic Materials Henan University Kaifeng 475004 China
| | - Lei Fang
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77843 USA
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
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9
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Affiliation(s)
- Chuanlong Li
- School of Chemistry and Chemical Engineering, Frontiers Science Centre for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Yong Zuo
- School of Chemistry and Chemical Engineering, Frontiers Science Centre for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Yu-Quan Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Centre for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Shaodong Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Centre for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
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10
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Tripathi P, Shuai L, Joshi H, Yamazaki H, Fowle WH, Aksimentiev A, Fenniri H, Wanunu M. Rosette Nanotube Porins as Ion Selective Transporters and Single-Molecule Sensors. J Am Chem Soc 2020; 142:1680-1685. [PMID: 31913034 DOI: 10.1021/jacs.9b10993] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Rosette nanotubes (RNTs) are a class of materials formed by molecular self-assembly of a fused guanine-cytosine base (G∧C base). An important feature of these self-assembled nanotubes is their precise atomic structure, intriguing for rational design and optimization as synthetic transmembrane porins. Here, we present experimental observations of ion transport across 1.1 nm inner diameter RNT porins (RNTPs) of various lengths in the range 5-200 nm. In a typical experiment, custom lipophilic RNTPs were first inserted into lipid vesicles; the vesicles then spontaneously fused with a planar lipid bilayer, which produced stepwise increases of ion current across the bilayer. Our measurements in 1 M KCl solution indicate ion transport rates of ∼50 ions s-1 V-1 m, which for short channels amounts to conductance values of ∼1 nS, commensurate with naturally occurring toxin channels such as α-hemolysin. Measurements of interaction times of α-cyclodextrin with RNTPs reveal two distinct unbinding time scales, which suggest that interactions of either face of α-cyclodextrin with the RNTP face are differentiable, backed with all-atom molecular dynamics simulations. Our results highlight the potential of RNTPs as self-assembled nonproteinaceous single-molecule sensors and selective nanofilters with tunable functionality through chemistry.
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Affiliation(s)
- Prabhat Tripathi
- Department of Physics , Northeastern University , Boston , Massachusetts 02115 , United States
| | - Liang Shuai
- Department of Chemical Engineering , Northeastern University , Boston , Massachusetts 02115 , United States
| | - Himanshu Joshi
- Department of Physics , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Hirohito Yamazaki
- Department of Physics , Northeastern University , Boston , Massachusetts 02115 , United States
| | - William H Fowle
- Electron Microscopy Facility , Northeastern University , Boston , Massachusetts 02115 , United States
| | - Aleksei Aksimentiev
- Department of Physics , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States.,Beckman Institute for Advanced Science and Technology , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Hicham Fenniri
- Department of Chemical Engineering , Northeastern University , Boston , Massachusetts 02115 , United States.,Department of Chemistry & Chemical biology , Northeastern University , Boston , Massachusetts 02115 , United States.,Department of Bioengineering , Northeastern University , Boston , Massachusetts 02115 , United States
| | - Meni Wanunu
- Department of Physics , Northeastern University , Boston , Massachusetts 02115 , United States.,Department of Chemistry & Chemical biology , Northeastern University , Boston , Massachusetts 02115 , United States.,Department of Bioengineering , Northeastern University , Boston , Massachusetts 02115 , United States
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11
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Aparicio F, Mayoral MJ, Montoro-García C, González-Rodríguez D. Guidelines for the assembly of hydrogen-bonded macrocycles. Chem Commun (Camb) 2019; 55:7277-7299. [DOI: 10.1039/c9cc03166a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article highlights selected examples on the synthesis of hydrogen-bonded macrocycles from ditopic molecules and analyze the main factors, often interrelated, that influence the equilibrium between ring and chain species.
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Affiliation(s)
- F. Aparicio
- Nanostructured Molecular Systems and Materials (MSMn) group
- Departamento de Química Orgánica
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- 28049 Madrid
| | - M. J. Mayoral
- Nanostructured Molecular Systems and Materials (MSMn) group
- Departamento de Química Orgánica
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- 28049 Madrid
| | - C. Montoro-García
- Nanostructured Molecular Systems and Materials (MSMn) group
- Departamento de Química Orgánica
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- 28049 Madrid
| | - D. González-Rodríguez
- Nanostructured Molecular Systems and Materials (MSMn) group
- Departamento de Química Orgánica
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- 28049 Madrid
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12
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Adhikari B, Lin X, Yamauchi M, Ouchi H, Aratsu K, Yagai S. Hydrogen-bonded rosettes comprising π-conjugated systems as building blocks for functional one-dimensional assemblies. Chem Commun (Camb) 2018; 53:9663-9683. [PMID: 28812751 DOI: 10.1039/c7cc04172a] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen-bonded supermacrocycles (rosettes) are attractive disk-shaped noncovalent synthons for extended functional columnar nanoassemblies. They can serve not only as noncovalent monomer units for supramolecular polymers and discrete oligomers in a dilute solution but also as constituent entities for soft matters such as gels and lyotropic/thermotropic liquid crystals. However, what are the merits of using supramolecular rosettes instead of using expanded π-conjugated covalent molecules? This review covers the self-assembly of photochemically and electrochemically active π-conjugated molecules through the formation of supramolecular rosettes via directional complementary multiple hydrogen-bonding interactions. These rosettes comprising π-conjugated covalent functional units stack into columnar nanoassemblies with unique structures and properties. By overviewing the design principle, characterization, and properties and functionalities of various examples, we illustrate the merits of utilizing rosette motifs. Basically, one can easily access a well-defined expanded π-surface composed of multi-chromophoric systems, which can ultimately afford stable extended nanoassemblies even in a dilute solution due to the higher association constants of supermacrocyclized π-systems. Importantly, these columnar nanoassemblies exhibit unique features in self-assembly processes, chiroptical, photophysical and electrochemical properties, nanoscale morphologies, and bulk properties. Moreover, the stimuli responsiveness of individual building blocks can be amplified to a greater extent by exploiting rosette intermediates to organize them into one-dimensional columnar structures. In the latter parts of the review, we also highlight the application of rosettes in supramolecular polymer systems, photovoltaic devices, and others.
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Affiliation(s)
- Bimalendu Adhikari
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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13
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Xiao Y, Zhang J, Lang M. Melamine driven supramolecular self-assembly of nucleobase derivatives in water. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.28954] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yan Xiao
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Jiaxiao Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Meidong Lang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
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14
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Hilaire MR, Ding B, Mukherjee D, Chen J, Gai F. Possible Existence of α-Sheets in the Amyloid Fibrils Formed by a TTR 105-115 Mutant. J Am Chem Soc 2018; 140:629-635. [PMID: 29241000 PMCID: PMC5796419 DOI: 10.1021/jacs.7b09262] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we combine several methods to characterize the fibrils formed by a TTR105-115 mutant in which Leu111 is replaced by the unnatural amino acid aspartic acid 4-methyl ester. We find that this mutant peptide exhibits significantly different aggregation behavior than the wild-type peptide: (1) it forms fibrils with a much faster rate, (2) its fibrils lack the long-range helical twists observed in TTR105-115 fibrils, (3) its fibrils exhibit a giant far-UV circular dichroism signal, and (4) its fibrils give rise to an unusual amide I' band consisting of four distinct and sharp peaks. On the basis of these results and also several previous computational studies, we hypothesize that the fibrils formed by this TTR mutant peptide contain both β- and α-sheets.
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Affiliation(s)
- Mary Rose Hilaire
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
| | - Bei Ding
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
- The Ultrafast Optical Processes Laboratory, University of Pennsylvania, Philadelphia, PA 19104
| | | | - Jianxin Chen
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
- The Ultrafast Optical Processes Laboratory, University of Pennsylvania, Philadelphia, PA 19104
| | - Feng Gai
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104
- The Ultrafast Optical Processes Laboratory, University of Pennsylvania, Philadelphia, PA 19104
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15
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Adhikari B, Yamada Y, Yamauchi M, Wakita K, Lin X, Aratsu K, Ohba T, Karatsu T, Hollamby MJ, Shimizu N, Takagi H, Haruki R, Adachi SI, Yagai S. Light-induced unfolding and refolding of supramolecular polymer nanofibres. Nat Commun 2017; 8:15254. [PMID: 28488694 PMCID: PMC5436226 DOI: 10.1038/ncomms15254] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 03/14/2017] [Indexed: 12/23/2022] Open
Abstract
Unlike classical covalent polymers, one-dimensionally (1D) elongated supramolecular polymers (SPs) can be encoded with high degrees of internal order by the cooperative aggregation of molecular subunits, which endows these SPs with extraordinary properties and functions. However, this internal order has not yet been exploited to generate and dynamically control well-defined higher-order (secondary) conformations of the SP backbone, which may induce functionality that is comparable to protein folding/unfolding. Herein, we report light-induced conformational changes of SPs based on the 1D exotic stacking of hydrogen-bonded azobenzene hexamers. The stacking causes a unique internal order that leads to spontaneous curvature, which allows accessing conformations that range from randomly folded to helically folded coils. The reversible photoisomerization of the azobenzene moiety destroys or recovers the curvature of the main chain, which demonstrates external control over the SP conformation that may ultimately lead to biological functions. Dynamically controlling the conformations of 1D elongated supramolecular polymers can induce functions comparable to protein folding/unfolding. Here the authors show light-induced conformational changes of azobenzene-based supramolecular polymers from helically coiled to extended/randomly coiled conformations.
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Affiliation(s)
- Bimalendu Adhikari
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.,Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S.A.S. Nagar, Manauli PO, Punjab 140306, India
| | - Yuki Yamada
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Mitsuaki Yamauchi
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kengo Wakita
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Xu Lin
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Keisuke Aratsu
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Tomonori Ohba
- Graduate School of Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Takashi Karatsu
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Martin J Hollamby
- School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire ST55BG, UK
| | - Nobutaka Shimizu
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - Hideaki Takagi
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - Rie Haruki
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - Shin-Ichi Adachi
- Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
| | - Shiki Yagai
- Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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16
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Wang X, Wang Y, Yang H, Fang H, Chen R, Sun Y, Zheng N, Tan K, Lu X, Tian Z, Cao X. Assembled molecular face-rotating polyhedra to transfer chirality from two to three dimensions. Nat Commun 2016; 7:12469. [PMID: 27555330 PMCID: PMC4999497 DOI: 10.1038/ncomms12469] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 07/06/2016] [Indexed: 12/19/2022] Open
Abstract
In nature, protein subunits on the capsids of many icosahedral viruses form rotational patterns, and mathematicians also incorporate asymmetric patterns into faces of polyhedra. Chemists have constructed molecular polyhedra with vacant or highly symmetric faces, but very little is known about constructing polyhedra with asymmetric faces. Here we report a strategy to embellish a C3h truxene unit with rotational patterns into the faces of an octahedron, forming chiral octahedra that exhibit the largest molar ellipticity ever reported, to the best of our knowledge. The directionalities of the facial rotations can be controlled by vertices to achieve identical rotational directionality on each face, resembling the homo-directionality of virus capsids. Investigations of the kinetics and mechanism reveal that non-covalent interaction among the faces is essential to the facial homo-directionality. Protein subunits on the capsids of icosahedral viruses can form patterns with rotational symmetry, which are difficult to recreate in the laboratory. Here the authors report a strategy to construct 3D chiral polyhedra with rotational faces from 2D chiral truxene-based units through dynamic covalent chemistry.
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Affiliation(s)
- Xinchang Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Huayan Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Hongxun Fang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ruixue Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Yibin Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Kai Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Zhongqun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Xiaoyu Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
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17
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Fenniri H, Tikhomirov GA, Brouwer DH, Bouatra S, El Bakkari M, Yan Z, Cho JY, Yamazaki T. High Field Solid-State NMR Spectroscopy Investigation of 15N-Labeled Rosette Nanotubes: Hydrogen Bond Network and Channel-Bound Water. J Am Chem Soc 2016; 138:6115-8. [DOI: 10.1021/jacs.6b02420] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Hicham Fenniri
- 313 Snell
Engineering Center, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | | | - Darren H. Brouwer
- Department of Chemistry, Redeemer University College, 777 Garner Road East, Ancaster, Ontario L9K 1J4, Canada
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18
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Yamazaki T, Fenniri H. Encapsulation of ferrocene by self-assembled rosette nanotubes: An investigation using statistical mechanical theory of molecular liquids. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2015.11.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Mayoral MJ, Bilbao N, González‐Rodríguez D. Hydrogen-Bonded Macrocyclic Supramolecular Systems in Solution and on Surfaces. ChemistryOpen 2016; 5:10-32. [PMID: 27308207 PMCID: PMC4906493 DOI: 10.1002/open.201500171] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Indexed: 11/23/2022] Open
Abstract
Cyclization into closed assemblies is the most recurrent approach to realize the noncovalent synthesis of discrete, well-defined nanostructures. This review article particularly focuses on the noncovalent synthesis of monocyclic hydrogen-bonded systems that are self-assembled from a single molecule with two binding-sites. Taking advantage of intramolecular binding events, which are favored with respect to intermolecular binding in solution, can afford quantitative amounts of a given supramolecular species under thermodynamic control. The size of the assembly depends on geometric issues such as the monomer structure and the directionality of the binding interaction, whereas the fidelity achieved relies largely on structural preorganization, low degrees of conformational flexibility, and templating effects. Here, we discuss several examples described in the literature in which cycles of different sizes, from dimers to hexamers, are studied by diverse solution or surface characterization techniques.
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Affiliation(s)
- María J. Mayoral
- Nanostructured Molecular Systems and Materials GroupDepartamento de Química OrgánicaFacultad de CienciasUniversidad Autónoma de Madrid28049MadridSpain
| | - Nerea Bilbao
- Nanostructured Molecular Systems and Materials GroupDepartamento de Química OrgánicaFacultad de CienciasUniversidad Autónoma de Madrid28049MadridSpain
| | - David González‐Rodríguez
- Nanostructured Molecular Systems and Materials GroupDepartamento de Química OrgánicaFacultad de CienciasUniversidad Autónoma de Madrid28049MadridSpain
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20
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Krieg E, Bastings MMC, Besenius P, Rybtchinski B. Supramolecular Polymers in Aqueous Media. Chem Rev 2016; 116:2414-77. [DOI: 10.1021/acs.chemrev.5b00369] [Citation(s) in RCA: 527] [Impact Index Per Article: 65.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | | | - Pol Besenius
- Institute
of Organic Chemistry, Johannes Gutenberg-Universität Mainz, Mainz 55128, Germany
| | - Boris Rybtchinski
- Department
of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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21
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Beingessner RL, Fan Y, Fenniri H. Molecular and supramolecular chemistry of rosette nanotubes. RSC Adv 2016. [DOI: 10.1039/c6ra16315g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthetic strategies used to tune the properties of a class of supramolecular 1D nanostructures, the rosette nanotubes, are reviewed herein.
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Affiliation(s)
| | - Yiwen Fan
- Department of Chemical Engineering
- Northeastern University
- 253 Snell Engineering Center
- Boston
- USA
| | - Hicham Fenniri
- Department of Chemical Engineering
- Northeastern University
- 253 Snell Engineering Center
- Boston
- USA
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22
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Ede JD, Ortega VA, Boyle D, Beingessner RL, Hemraz UD, Fenniri H, Stafford JL, Goss GG. Rosette Nanotubes Alter IgE-Mediated Degranulation in the Rat Basophilic Leukemia (RBL)-2H3 Cell Line. Toxicol Sci 2015. [PMID: 26224082 DOI: 10.1093/toxsci/kfv166] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
In this study, the effects of rosette nanotube (RNT) exposure on immune cell viability and function were investigated in vitro using the rat basophilic leukemia (RBL)-2H3 cell line. RBL-2H3 viability was decreased in a dose- and time-dependent manner after lysine-functionalized RNT (K-RNT) exposure. In addition, K-RNTs had a significant effect on RBL-2H3 degranulation. When K-RNT exposure was concurrent with IgE sensitization, 50 and 100 mg l(-1) K-RNTs elicited a heightened degranulatory response compared with IgE alone. Exposure to 50 and 100 mg l(-1) K-RNTs also caused degranulation in RBL-2H3 cells not sensitized with IgE (0 ng ml(-1) IgE). Furthermore, in cells preexposed to K-RNTs for 2 h and subsequently washed, sensitized, and stimulated with IgE, a potentiated degranulatory response was observed. Using confocal laser scanning microscopy and a fluorescein isothiocyanate (FITC)-functionalized RNT construct (termed FITC(1)/TBL(19)-RNT), we demonstrated a strong and direct affiliation between RNTs and RBL-2H3 cell membranes. We also demonstrated cellular internalization of RNTs after 2 h of exposure. Together, these data demonstrate that RNTs may affiliate with the cellular membrane of RBL-2H3 cells and can be internalized. These interactions can affect viability and alter the ability of these cells to elicit IgE-FcεR mediated degranulation.
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Affiliation(s)
- James D Ede
- *Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9;
| | - Van A Ortega
- *Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9
| | - David Boyle
- *Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9
| | - Rachel L Beingessner
- National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta, Canada, T6G 2M9; and
| | - Usha D Hemraz
- National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta, Canada, T6G 2M9; and
| | - Hicham Fenniri
- Department of Chemical Engineering, 313 Snell Engineering Center, 360 Huntington Avenue, Northeastern University, Boston, Maryland 02115
| | - James L Stafford
- *Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9
| | - Greg G Goss
- *Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9; National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta, Canada, T6G 2M9; and
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23
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24
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Saez Talens V, Englebienne P, Trinh TT, Noteborn WEM, Voets IK, Kieltyka RE. Aromatic Gain in a Supramolecular Polymer. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503905] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Matsumoto T, Tanaka K, Chujo Y. Synthesis and Characterization of Gallafluorene-Containing Conjugated Polymers: Control of Emission Colors and Electronic Effects of Gallafluorene Units on π-Conjugation System. Macromolecules 2015. [DOI: 10.1021/ma502592c] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Takuya Matsumoto
- Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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26
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Majo VJ, Simpson NR, Prabhakaran J, Mann JJ, Kumar JSD. Radiosynthesis of [18F]ATPFU: a potential PET ligand for mTOR. J Labelled Comp Radiopharm 2014; 57:705-9. [PMID: 25359578 DOI: 10.1002/jlcr.3239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/17/2014] [Accepted: 09/22/2014] [Indexed: 12/12/2022]
Abstract
Mammalian target of rapamycin (mTOR) plays a pivotal role in many aspects of cellular proliferation, and recent evidence suggests that an altered mTOR signaling pathway plays a central role in the pathogenesis of aging, tumor progression, neuropsychiatric, and major depressive disorder. Availability of a mTOR-specific PET tracer will facilitate monitoring early response to treatment with mTOR inhibitors that are under clinical development. Towards this we have developed the radiosynthesis of [(18)F]1-(4-(4-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-1-(2,2,2-trifluoroethyl)-1H-pyrazolo[3,4-d]pyrimidin-6-yl)phenyl)-3-(2-fluoroethyl)urea [(18)F]ATPFU ([(18)F]1) as an mTOR PET ligand. Synthesis of reference 1 and the precursor for radiolabeling, 4-(4-8-oxa-3-azabicyclo[3.2.1]-octan-3yl)-1-(2,2,2-trifluoroethyl)-1H-pyrazolo[3,4-d]pyrimidin-6yl)aniline (10), were achieved from beta-chloroaldehyde 3 in 4 and 5 steps, respectively, with an overall yield of 25-28%. [(18)F]Fluoroethylamine was prepared by heating N-[2-(toluene-4-sulfonyloxy)ethyl]phthalimide with [(18)F]fluoride ion in acetonitrile. [(18)F]1 was obtained by slow distillation under argon of [(18) F]FCH2CH2NH2 into amine 10 that was pre-treated with triphosgene at 0-5 °C. The total time required for the two-step radiosynthesis including semi-preparative HPLC purification was 90 min, and the overall radiochemical yield of [(18)F]1 for the process was 15 ± 5% based on [(18)F]fluoride ion (decay corrected). At the end of synthesis (EOS), the specific activity was 37-74 GBq/µmol (N = 6).
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Affiliation(s)
- Vattoly J Majo
- Division of Molecular Imaging and Neuropathology New York State Psychiatric Institute, New York, USA
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27
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He S, Zhao H, Guo X, Xu X, Zhou X, Liu J, Xing Z, Ye L, Jiang L, Chen Q, He Y. The Readout of Base-Pair Information in Adenine-Thymine α-D-Arabinonucleosides. Chemistry 2014; 20:15473-81. [DOI: 10.1002/chem.201403998] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Indexed: 11/10/2022]
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28
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Hemraz UD, El-Bakkari M, Yamazaki T, Cho JY, Beingessner RL, Fenniri H. Chiromers: conformation-driven mirror-image supramolecular chirality isomerism identified in a new class of helical rosette nanotubes. NANOSCALE 2014; 6:9421-9427. [PMID: 24770905 DOI: 10.1039/c4nr00340c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Rosette nanotubes are biologically inspired nanostructures, formed through the hierarchical organization of a hybrid DNA base analogue (G∧C), which features hydrogen-bonding arrays of guanine and cytosine. Several twin-G∧C motifs functionalized with chiral moieties, which undergo a self-assembly process under methanolic and aqueous conditions to produce helical rosette nanotubes (RNTs), were synthesized and characterized. The built-in molecular chirality in the twin-G∧C building blocks led to the supramolecular chirality exhibited by the RNTs, as evidenced by the CD activity. Depending on the motifs and environmental conditions, mirror-image supramolecular chirality due to absolute molecular chirality, solvent-induced and structure-dependent supramolecular chirality inversion, and pH-controlled chiroptical switching were observed.
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Affiliation(s)
- Usha D Hemraz
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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29
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Bulavko GV, Ishchenko AA. Organic bulk heterojunction photovoltaic structures: design, morphology and properties. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n07abeh004417] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Ramaekers M, de Feijter I, Bomans PHH, Sommerdijk NAJM, Dankers PYW, Meijer EW. Self-Assembly of Chiral Supramolecular Ureido-Pyrimidinone-Based Poly(ethylene glycol) Polymers via Multiple Pathways. Macromolecules 2014. [DOI: 10.1021/ma500611e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Mellany Ramaekers
- Institute for Complex Molecular
Systems, ‡ Laboratory of Macromolecular and
Organic Chemistry, §Laboratory of Chemical Biology, and ∥Laboratory for Macromolecular and
Organic Chemistry, and Soft Matter Cryo-TEM Research Unit. Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Isja de Feijter
- Institute for Complex Molecular
Systems, ‡ Laboratory of Macromolecular and
Organic Chemistry, §Laboratory of Chemical Biology, and ∥Laboratory for Macromolecular and
Organic Chemistry, and Soft Matter Cryo-TEM Research Unit. Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Paul H. H. Bomans
- Institute for Complex Molecular
Systems, ‡ Laboratory of Macromolecular and
Organic Chemistry, §Laboratory of Chemical Biology, and ∥Laboratory for Macromolecular and
Organic Chemistry, and Soft Matter Cryo-TEM Research Unit. Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Nico A. J. M. Sommerdijk
- Institute for Complex Molecular
Systems, ‡ Laboratory of Macromolecular and
Organic Chemistry, §Laboratory of Chemical Biology, and ∥Laboratory for Macromolecular and
Organic Chemistry, and Soft Matter Cryo-TEM Research Unit. Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Patricia Y. W. Dankers
- Institute for Complex Molecular
Systems, ‡ Laboratory of Macromolecular and
Organic Chemistry, §Laboratory of Chemical Biology, and ∥Laboratory for Macromolecular and
Organic Chemistry, and Soft Matter Cryo-TEM Research Unit. Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - E. W. Meijer
- Institute for Complex Molecular
Systems, ‡ Laboratory of Macromolecular and
Organic Chemistry, §Laboratory of Chemical Biology, and ∥Laboratory for Macromolecular and
Organic Chemistry, and Soft Matter Cryo-TEM Research Unit. Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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31
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Durmus A, Gunbas G, Farmer SC, Olmstead MM, Mascal M, Legese B, Cho JY, Beingessner RL, Yamazaki T, Fenniri H. Synthesis of N-substituted Pyrido[4,3-d]pyrimidines for the Large-Scale Production of Self-Assembled Rosettes and Nanotubes. J Org Chem 2013; 78:11421-6. [DOI: 10.1021/jo4019792] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Asuman Durmus
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Gorkem Gunbas
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Steven C. Farmer
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Marilyn M. Olmstead
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Mark Mascal
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Belete Legese
- Department of Chemistry
and National Institute
for Nanotechnology, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
| | - Jae-Young Cho
- Department of Chemistry
and National Institute
for Nanotechnology, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
| | - Rachel L. Beingessner
- Department of Chemistry
and National Institute
for Nanotechnology, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
| | - Takeshi Yamazaki
- Department of Chemistry
and National Institute
for Nanotechnology, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
| | - Hicham Fenniri
- Department of Chemistry
and National Institute
for Nanotechnology, University of Alberta, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
- Department of Chemical Engineering, Northeastern University, 360 Huntington
Avenue, Boston Massachusetts 02115, United States
- Qatar Biomedical Research Institute, Qatar Foundation, P.O. Box 5825, Doha, Qatar
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32
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Zhao H, He S, Yang M, Guo X, Xin G, Zhang C, Ye L, Chu L, Xing Z, Huang W, Chen Q, He Y. Micro-flowers changing to nano-bundle aggregates by translocation of the sugar moiety in Janus TA nucleosides. Chem Commun (Camb) 2013; 49:3742-4. [DOI: 10.1039/c3cc41383g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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33
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Sun L, Zhang L, Hemraz UD, Fenniri H, Webster TJ. Bioactive Rosette Nanotube–Hydroxyapatite Nanocomposites Improve Osteoblast Functions. Tissue Eng Part A 2012; 18:1741-50. [DOI: 10.1089/ten.tea.2011.0456] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Linlin Sun
- School of Engineering, Brown University, Providence, Rhode Island
| | - Lijie Zhang
- Department of Mechanical and Aerospace Engineering, George Washington University, Washington, District of Columbia
| | - Usha D. Hemraz
- National Institute for Nanotechnology, University of Alberta, Edmonton, Canada
- Departments of Chemistry and Biomedical Engineering, University of Alberta, Edmonton, Canada
| | - Hicham Fenniri
- National Institute for Nanotechnology, University of Alberta, Edmonton, Canada
- Departments of Chemistry and Biomedical Engineering, University of Alberta, Edmonton, Canada
| | - Thomas J. Webster
- School of Engineering, Brown University, Providence, Rhode Island
- Department of Orthopaedics, Brown University, Providence, Rhode Island
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34
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Deng BL, Beingessner RL, Johnson RS, Girdhar NK, Danumah C, Yamazaki T, Fenniri H. Covalent Capture of Self-Assembled Rosette Nanotubes. Macromolecules 2012. [DOI: 10.1021/ma3012976] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo-Liang Deng
- National Institute for Nanotechnology,
Departments of Chemistry and Biomedical Engineering, University of Alberta, 11421 Saskatchewan Drive, Edmonton,
Alberta T6G 2M9, Canada
| | - Rachel L. Beingessner
- National Institute for Nanotechnology,
Departments of Chemistry and Biomedical Engineering, University of Alberta, 11421 Saskatchewan Drive, Edmonton,
Alberta T6G 2M9, Canada
| | - Ross S. Johnson
- National Institute for Nanotechnology,
Departments of Chemistry and Biomedical Engineering, University of Alberta, 11421 Saskatchewan Drive, Edmonton,
Alberta T6G 2M9, Canada
| | - Navdeep K. Girdhar
- National Institute for Nanotechnology,
Departments of Chemistry and Biomedical Engineering, University of Alberta, 11421 Saskatchewan Drive, Edmonton,
Alberta T6G 2M9, Canada
| | - Christophe Danumah
- National Institute for Nanotechnology,
Departments of Chemistry and Biomedical Engineering, University of Alberta, 11421 Saskatchewan Drive, Edmonton,
Alberta T6G 2M9, Canada
| | - Takeshi Yamazaki
- National Institute for Nanotechnology,
Departments of Chemistry and Biomedical Engineering, University of Alberta, 11421 Saskatchewan Drive, Edmonton,
Alberta T6G 2M9, Canada
| | - Hicham Fenniri
- National Institute for Nanotechnology,
Departments of Chemistry and Biomedical Engineering, University of Alberta, 11421 Saskatchewan Drive, Edmonton,
Alberta T6G 2M9, Canada
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35
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Yagai S, Goto Y, Lin X, Karatsu T, Kitamura A, Kuzuhara D, Yamada H, Kikkawa Y, Saeki A, Seki S. Self-Organization of Hydrogen-Bonding Naphthalene Chromophores into J-type Nanorings and H-type Nanorods: Impact of Regioisomerism. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201436] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Yagai S, Goto Y, Lin X, Karatsu T, Kitamura A, Kuzuhara D, Yamada H, Kikkawa Y, Saeki A, Seki S. Self-Organization of Hydrogen-Bonding Naphthalene Chromophores into J-type Nanorings and H-type Nanorods: Impact of Regioisomerism. Angew Chem Int Ed Engl 2012; 51:6643-7. [PMID: 22628167 DOI: 10.1002/anie.201201436] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 04/05/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Shiki Yagai
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
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37
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Yagai S, Usui M, Seki T, Murayama H, Kikkawa Y, Uemura S, Karatsu T, Kitamura A, Asano A, Seki S. Supramolecularly Engineered Perylene Bisimide Assemblies Exhibiting Thermal Transition from Columnar to Multilamellar Structures. J Am Chem Soc 2012; 134:7983-94. [DOI: 10.1021/ja302574b] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Shiki Yagai
- Department of Applied Chemistry & Biochemistry, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
- CREST, Japan Science and Technology Agency (JST), 1-33 Yayoi-cho, Inage-ku,
Chiba 263-8522, Japan
| | - Mari Usui
- Department of Applied Chemistry & Biochemistry, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Tomohiro Seki
- Department of Applied Chemistry & Biochemistry, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Haruno Murayama
- Office
of Society-Academia Collaboration
for Innovation, Kyoto University, Yoshida-Honmachi,
Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshihiro Kikkawa
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan
| | - Shinobu Uemura
- Department of Applied Chemistry & Biochemistry, Graduate School of Science and Technology, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555, Japan
| | - Takashi Karatsu
- Department of Applied Chemistry & Biochemistry, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Akihide Kitamura
- Department of Applied Chemistry & Biochemistry, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Atsushi Asano
- Department of Applied Chemistry,
Graduate
School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shu Seki
- Department of Applied Chemistry,
Graduate
School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
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38
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Alsbaiee A, Jules MS, Beingessner RL, Cho JY, Yamazaki T, Fenniri H. Synthesis of rhenium chelated MAG3 functionalized rosette nanotubes. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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39
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Alsbaiee A, Beingessner R, Fenniri H. Self-assembled nanomaterials for tissue-engineering applications. Nanomedicine (Lond) 2012. [DOI: 10.1533/9780857096449.3.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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40
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Kishikawa K, Isaka M, Takahashi M, Saito K, Kohmoto S. Self-assembly of Compact Molecules Possessing Two Carboxy and One Amide Groups into Tubular Nanostructures in Liquid Crystal Phases. CHEM LETT 2011. [DOI: 10.1246/cl.2011.1278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Coleman AC, Beierle JM, Stuart MCA, Maciá B, Caroli G, Mika JT, van Dijken DJ, Chen J, Browne WR, Feringa BL. Light-induced disassembly of self-assembled vesicle-capped nanotubes observed in real time. NATURE NANOTECHNOLOGY 2011; 6:547-52. [PMID: 21841795 DOI: 10.1038/nnano.2011.120] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 06/27/2011] [Indexed: 05/23/2023]
Abstract
Molecular self-assembly is the basis for the formation of numerous artificial nanostructures. The self-organization of peptides, amphiphilic molecules composed of fused benzene rings and other functional molecules into nanotubes is of particular interest. However, the design of dynamic, complex self-organized systems that are responsive to external stimuli remains a significant challenge. Here, we report self-assembled, vesicle-capped nanotubes that can be selectively disassembled by irradiation. The walls of the nanotubes are 3-nm-thick bilayers and are made from amphiphilic molecules with two hydrophobic legs that interdigitate when the molecules self-assemble into bilayers. In the presence of phospholipids, a phase separation between the phospholipids and the amphiphilic molecules creates nanotubes, which are end-capped by vesicles that can be chemically altered or removed and reattached without affecting the nanotubes. The presence of a photoswitchable and fluorescent core in the amphiphilic molecules allows fast and highly controlled disassembly of the nanotubes on irradiation, and distinct disassembly processes can be observed in real time using fluorescence microscopy.
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Affiliation(s)
- Anthony C Coleman
- Center for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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42
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Zhang W, Fujiki M, Zhu X. Chiroptical Nanofibers Generated from Achiral Metallophthalocyanines Induced by Diamine Homochirality. Chemistry 2011; 17:10628-35. [DOI: 10.1002/chem.201100208] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 06/10/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Wei Zhang
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916‐5 Takayama, Ikoma, Nara 630‐0036 (Japan)
- Jiangsu Key Laboratory of Advanced Functional, Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou 215123 (P.R. China), Fax: (+81) 743‐72‐6049
| | - Michiya Fujiki
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916‐5 Takayama, Ikoma, Nara 630‐0036 (Japan)
| | - Xiulin Zhu
- Jiangsu Key Laboratory of Advanced Functional, Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou 215123 (P.R. China), Fax: (+81) 743‐72‐6049
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43
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Kobayashi Y, Katoono R, Yamaguchi M, Yui N. Modulation of reversible self-assembling of dumbbell-shaped poly(ethylene glycol)s and β-cyclodextrins: precipitation and heat-induced supramolecular crosslinking. Polym J 2011. [DOI: 10.1038/pj.2011.71] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Ma M, Bong D. Determinants of cyanuric acid and melamine assembly in water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8841-8853. [PMID: 21688852 DOI: 10.1021/la201415d] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
While the recognition of cyanuric acid (CA) by melamine (M) and their derivatives has been known to occur in both water and organic solvents for some time, analysis of CA/M assembly in water has not been reported (Ranganathan, A.; Pedireddi, V. R.; Rao, C. N. R. J. Am. Chem. Soc.1999, 121, 1752-1753; Mathias, J. P.; Simanek, E. E.; Seto, C. T.; Whitesides, G. M. Macromol. Symp.1994, 77, 157-166; Zerkowski, J. A.; MacDonald, J. C.; Seto, C. T.; Wierda, D. A.; Whitesides, G. M. J. Am. Chem. Soc.1994, 116, 2382-2391; Mathias, J. P.; Seto, C. T.; Whitesides, G. M. Polym. Prepr.1993, 34, 92-93; Seto, C. T.; Whitesides, G. M. J. Am. Chem. Soc.1993, 115, 905-916; Zerkowski, J. A.; Seto, C. T.; Whitesides, G. M. J. Am. Chem. Soc.1992, 114, 5473-5475; Seto, C. T.; Whitesides, G. M. J. Am. Chem. Soc.1990, 112, 6409-6411; Wang, Y.; Wei, B.; Wang, Q. J. Chem. Cryst.1990, 20, 79-84; ten Cate, M. G. J.; Huskens, J.; Crego-Calama, M.; Reinhoudt, D. N. Chem.-Eur. J.2004, 10, 3632-3639). We have examined assembly of CA/M, as well as assembly of soluble trivalent CA and M derivatives (TCA/TM), in aqueous solvent, using a combination of solution phase NMR, isothermal titration and differential scanning calorimetry (ITC/DSC), cryo-transmission electron microscopy (cryo-TEM), and synthetic chemistry. While the parent heterocycles coprecipitate in water, the trivalent system displays more controlled and cooperative assembly that occurs at lower concentrations than the parent and yields a stable nanoparticle suspension. The assembly of both parent and trivalent systems is rigorously 1:1 and proceeds as an exothermic, proton-transfer coupled process in neutral pH water. Though CA and M are considered canonical hydrogen-bonding motifs in organic solvents, we find that their assembly in water is driven in large part by enthalpically favorable surface-area burial, similar to what is observed with nucleic acid recognition. There are currently few synthetic systems capable of robust molecular recognition in water that do not rely on native recognition motifs, possibly due to an incomplete understanding of recognition processes in water. This study establishes a detailed conceptual framework for considering CA/M heterocycle recognition in water which enables the future design of molecular recognition systems that function in water.
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Affiliation(s)
- Mingming Ma
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, United States
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45
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Seki T, Asano A, Seki S, Kikkawa Y, Murayama H, Karatsu T, Kitamura A, Yagai S. Rational construction of perylene bisimide columnar superstructures with a biased helical sense. Chemistry 2011; 17:3598-608. [PMID: 21365708 DOI: 10.1002/chem.201003540] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Indexed: 11/06/2022]
Abstract
Discotic supramolecular complexes bearing six perylene bisimide (PBI) chromophores were prepared by mixing monotopically triple-hydrogen-bonding melamines equipped with two PBI chromophores and two 3,7-dimethyloctyl chiral handles with tritopically triple-hydrogen-bonding cyanuric acid (CA). UV/Vis and fluorescence titration experiments demonstrated that the discotic complexes were formed in methylcyclohexane by the 3:1 complexation between the melamines and CA. TEM and AFM studies revealed that the complexes hierarchically organize into fibrous columnar assemblies, which eventually results in the formation of organogels. Circular dichroism (CD) and flash-photolysis time resolved microwave conductivity measurements revealed the presence of extended chiral stacks of PBI chromophores within the columns. The anisotropy factors of the columnar assemblies are remarkably high (g=1.5×10(-3)) when considering the presence of only one 3,7-dimethyloctyl chiral handle per perylene chromophore, suggesting that the columnar structures have a biased helical sense. The fact that the chiral centers are located inside the discotic complexes rather than at their peripheries might be unique structural property responsible for the rather strong optical activities for the assemblies of this chromophore. The effective transcription of the molecular chirality to the extended columnar assemblies through the formation of unique discotic complexes enables the expression of "majority-rules" chiral amplification effect, which is unprecedented for the supramolecular assemblies of PBIs.
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Affiliation(s)
- Tomohiro Seki
- Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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46
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Ouhib F, Raynal M, Jouvelet B, Isare B, Bouteiller L. Hydrogen bonded supramolecular polymers in moderately polar solvents. Chem Commun (Camb) 2011; 47:10683-5. [DOI: 10.1039/c1cc14590h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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