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Wu F, Jin L, Zheng X, Yan B, Tang P, Yang H, Deng W, Yang W. Self-Powered Nanocomposites under an External Rotating Magnetic Field for Noninvasive External Power Supply Electrical Stimulation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:38323-38335. [PMID: 29039642 DOI: 10.1021/acsami.7b12854] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Electrical stimulation in biology and gene expression has attracted considerable attention in recent years. However, it is inconvenient that the electric stimulation needs to be supplied an implanted power-transported wire connecting the external power supply. Here, we fabricated a self-powered composite nanofiber (CNF) and developed an electric generating system to realize electrical stimulation based on the electromagnetic induction effect under an external rotating magnetic field. The self-powered CNFs generating an electric signal consist of modified MWNTs (m-MWNTs) coated Fe3O4/PCL fibers. Moreover, the output current of the nanocomposites can be increased due to the presence of the magnetic nanoparticles during an external magnetic field is applied. In this paper, these CNFs were employed to replace a bullfrog's sciatic nerve and to realize the effective functional electrical stimulation. The cytotoxicity assays and animal tests of the nanocomposites were also used to evaluate the biocompatibility and tissue integration. These results demonstrated that this self-powered CNF not only plays a role as power source but also can act as an external power supply under an external rotating magnetic field for noninvasive the replacement of injured nerve.
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Affiliation(s)
- Fengluan Wu
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Long Jin
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Xiaotong Zheng
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Bingyun Yan
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Pandeng Tang
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Huikai Yang
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Weili Deng
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
| | - Weiqing Yang
- School of Materials Science and Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, China
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Yue JY, Markoulides M, Regan AC, Li SY, Chronakis N, Gourdon A, Chen T, Yan HJ, Wang D. Construction of 2D nanoporous networks by coupling on-surface dynamic imine chemistry and dipole-stabilized self-assembly. Chem Commun (Camb) 2017; 53:428-431. [PMID: 27959371 DOI: 10.1039/c6cc08482f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Double-walled nanoporous networks based on the Schiff base reaction of nonplanar tripodic building blocks and subsequent dipole-directed self-assembly were fabricated on highly oriented pyrolytic graphite (HOPG) at the gas-solid interface. This is the first example of nonplanar molecules exploited as precursors for a surface reaction.
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Affiliation(s)
- Jie-Yu Yue
- Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China. and University of CAS, Beijing 100049, P. R. China
| | - Marios Markoulides
- CEMES-CNRS, UP8011, BP 94347, Nanosciences Group, 29 rue Jeanne Marvig, 31055, Toulouse, France
| | - Andrew C Regan
- School of Chemistry, The University of Manchester, Manchester, M13 9PL, UK
| | - Shu-Ying Li
- Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China. and University of CAS, Beijing 100049, P. R. China
| | - Nikos Chronakis
- Department of Chemistry, University of Cyprus, 2109, Aglantzia, Nicosia, Cyprus
| | - André Gourdon
- CEMES-CNRS, UP8011, BP 94347, Nanosciences Group, 29 rue Jeanne Marvig, 31055, Toulouse, France
| | - Ting Chen
- Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China.
| | - Hui-Juan Yan
- Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China.
| | - Dong Wang
- Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China. and University of CAS, Beijing 100049, P. R. China
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Howlader P, Das P, Zangrando E, Mukherjee PS. Urea-Functionalized Self-Assembled Molecular Prism for Heterogeneous Catalysis in Water. J Am Chem Soc 2016; 138:1668-76. [DOI: 10.1021/jacs.5b12237] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Prodip Howlader
- Department
of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Paramita Das
- Department
of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Ennio Zangrando
- Department
of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste 34127, Italy
| | - Partha Sarathi Mukherjee
- Department
of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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Zheng QN, Wang L, Zhong YW, Liu XH, Chen T, Yan HJ, Wang D, Yao JN, Wan LJ. Adaptive reorganization of 2D molecular nanoporous network induced by coadsorbed guest molecule. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3034-3040. [PMID: 24628397 DOI: 10.1021/la5002418] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The ordered array of nanovoids in nanoporous networks, such as honeycomb, Kagome, and square, provides a molecular template for the accommodation of "guest molecules". Compared with the commonly studied guest molecules featuring high symmetry evenly incorporated into the template, guest molecules featuring lower symmetry are rare to report. Herein, we report the formation of a distinct patterned superlattice of guest molecules by selective trapping of guest molecules into the honeycomb network of trimesic acid (TMA). Two distinct surface patterns have been achieved by the guest inclusion induced adaptive reconstruction of a 2D molecular nanoporous network. The honeycomb networks can synergetically tune the arrangement upon inclusion of the guest molecules with different core size but similar peripherals groups, resulting in a trihexagonal Kagome or triangular patterns.
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Affiliation(s)
- Qing-Na Zheng
- Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P. R. China
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McGuirk CM, Stern CL, Mirkin CA. Small molecule regulation of self-association and catalytic activity in a supramolecular coordination complex. J Am Chem Soc 2014; 136:4689-96. [PMID: 24628075 DOI: 10.1021/ja500214r] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Herein, we report the synthesis and characterization of the first weak-link approach (WLA) supramolecular construct that employs the small molecule regulation of intermolecular hydrogen bonding interactions for the in situ control of catalytic activity. A biaryl urea group, prone to self-aggregation, was functionalized with a phosphinoalkyl thioether (P,S) hemilabile moiety and incorporated into a homoligated Pt(II) tweezer WLA complex. This urea-containing construct, which has been characterized by a single crystal X-ray diffraction study, can be switched in situ from a rigid fully closed state to a flexible semiopen state via Cl(-) induced changes in the coordination mode at the Pt(II) structural node. FT-IR and (1)H NMR spectroscopy studies were used to demonstrate that while extensive urea self-association persists in the flexible semiopen complex, these interactions are deterred in the rigid, fully closed complex because of geometric and steric restraints. Consequently, the urea moieties in the fully closed complex are able to catalyze a Diels-Alder reaction between cyclopentadiene and methyl vinyl ketone to generate 2-acetyl-5-norbornene. The free urea ligand and the semiopen complex show no such activity. The successful incorporation and regulation of a hydrogen bond donating catalyst in a WLA construct open the doors to a vast and rapidly growing catalogue of allosteric catalysts for applications in the detection and amplification of organic analytes.
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Affiliation(s)
- C Michael McGuirk
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113 United States
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Zalake P, Thomas KG. Role of hydrogen bonding on the self-organization of phenyleneethynylenes on surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:2242-2249. [PMID: 23331130 DOI: 10.1021/la3048592] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A series of carboxylic acid substituted phenyleneethynylenes, having a rigid backbone of 2.7 ± 0.1 nm, were synthesized by following the Heck-Cassar-Sonagashira-Hagihara cross-coupling reaction. Hydrogen bonding, through the formation of cyclic dimers of carboxylic acid, is more preferred over catemeric structures in all the molecular systems under investigation. The formation of extended two-dimensional patterns on highly oriented pyrolitic graphite (HOPG) surface is dictated by the position as well as number of the carboxylic acid groups on the phenyleneethynylenes. Highly ordered extended arrangements, in the linear and stepwise fashion, were observed when the carboxylic acid groups are attached in the para and meta positions of phenyleneethynylenes. The vital role of the number of carboxylic acid on the organization of molecules is evident in the case of tetracarboxylic acid derivative wherein a Kagome-type structure was observed. Further, the coassembly of two types of phenyleneethynylenes was achieved on HOPG surface through acid base interaction.
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Affiliation(s)
- Pratap Zalake
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), CET Campus, Thiruvananthapuram, India
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Urano K, Ohno T, Tomono K, Miyamura K. Observation of Dynamic Behavior of Self-Assembled N-Icosyl-Substituted Indigo by STM. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20120240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Kazuki Urano
- Department of Chemistry, Faculty of Science, Tokyo University of Science
| | - Toshikazu Ohno
- Department of Chemistry, Faculty of Science, Tokyo University of Science
| | - Kazuaki Tomono
- Department of Material Chemistry, Graduate School of Science and Engineering, Yamaguchi University
| | - Kazuo Miyamura
- Department of Chemistry, Faculty of Science, Tokyo University of Science
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Dendronization: A Useful Synthetic Strategy to Prepare Multifunctional Materials. Polymers (Basel) 2012. [DOI: 10.3390/polym4010355] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Xu LP, Liu Y, Zhang X. Interfacial self-assembly of amino acids and peptides: scanning tunneling microscopy investigation. NANOSCALE 2011; 3:4901-4915. [PMID: 22057641 DOI: 10.1039/c1nr11070e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Proteins play important roles in human daily life. To take advantage of the lessons learned from nature, it is essential to investigate the self-assembly of subunits of proteins, i.e., amino acids and polypeptides. Due to its high resolution and versatility of working environment, scanning tunneling microscopy (STM) has become a powerful tool for studying interfacial molecular assembly structures. This review is intended to reflect the progress in studying interfacial self-assembly of amino acids and peptides by STM. In particular, we focus on environment-induced polymorphism, chiral recognition, and coadsorption behavior with molecular templates. These studies would be highly beneficial to research endeavors exploring the mechanism and nanoscale-controlling molecular assemblies of amino acids and polypeptides on surfaces, understanding the origin of life, unravelling the essence of disease at the molecular level and deeming what is necessary for the "bottom-up" nanofabrication of molecular devices and biosensors being constructed with useful properties and desired performance.
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Affiliation(s)
- Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, PR China.
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