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Shi K, Jia G, Wu Y, Zhang S, Chen J. Dynamic control of circumrotation of a [2]catenane by acid-base switching. ChemistryOpen 2024; 13:e202300304. [PMID: 38333963 PMCID: PMC11319237 DOI: 10.1002/open.202300304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/24/2024] [Indexed: 02/10/2024] Open
Abstract
Dynamic control of the motion in a catenane remains a big challenge as it requires precise design and sophisticated well-organized structures. This paper reports the design and synthesis of a donor-acceptor [2]catenane through mechanical interlocking, employing a crown ether featuring two dibenzylammonium salts on its side arms as the host and a cyclobis(paraquat-p-phenylene) (CBPQT ⋅ 4PF6) ring as the guest molecule. By addition of external acid or base, the catenane can form self-complexed or decomplexed compounds to alter the cavity size of the crown ether ring, consequently affecting circumrotation rate of CBPQT ⋅ 4PF6 ring of the catenane. This study offers insights for the design and exploration of artificial molecular machines with intricate cascading responsive mechanisms.
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Affiliation(s)
- Kelun Shi
- SCNU-UG International Joint Laboratory of Molecular Science and DisplaysNational Center for International Research on Green OptoelectronicsGuangzhou510006P. R. China
| | - Guohui Jia
- SCNU-UG International Joint Laboratory of Molecular Science and DisplaysNational Center for International Research on Green OptoelectronicsGuangzhou510006P. R. China
| | - Ying Wu
- SCNU-UG International Joint Laboratory of Molecular Science and DisplaysNational Center for International Research on Green OptoelectronicsGuangzhou510006P. R. China
| | - Shilong Zhang
- SCNU-UG International Joint Laboratory of Molecular Science and DisplaysNational Center for International Research on Green OptoelectronicsGuangzhou510006P. R. China
| | - Jiawen Chen
- SCNU-UG International Joint Laboratory of Molecular Science and DisplaysNational Center for International Research on Green OptoelectronicsGuangzhou510006P. R. China
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2
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Prakashni M, Dasgupta S. BP23C7: high-yield synthesis and application in constructing [3]rotaxanes and responsive pseudo[2]rotaxanes. Org Biomol Chem 2024; 22:1871-1884. [PMID: 38349013 DOI: 10.1039/d3ob02094k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
A biphenyl-23-crown-7 ether (BP23C7) is synthesized in 86% yield from commercially available starting materials. BP23C7 forms pseudo[2]rotaxane with a dibenzylammonium ion (DBA+), exhibiting a good association constant value (ka = 1 × 103 M-1). Subsequently, fluorophoric properties of BP23C7 and anthracene terminated axles are blended to create responsive pseudo[2]rotaxanes. The "turn-on" fluorescence response of BP23C7 due to the addition of fluoride and chloride anions to pseudo[2]rotaxane systems has been investigated. Concomitant fluorescence quenching of the anthracene moiety of corresponding axles due to ion-pair formation has been addressed. Furthermore, two variants of [23]crown ethers, i.e. BP23C7 and o-xylene-23-crown-7 ether (X23C7), are applied for constructing homo[3]rotaxane architectures. A half-axle comprising of DBA+ moiety and a terminal olefin is mixed separately with two [23]crown ethers and subjected to self-metathesis using Grubbs' first-generation catalyst.
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Affiliation(s)
- Manisha Prakashni
- Department of Chemistry, National Institute of Technology Patna, Patna - 800005, India.
| | - Suvankar Dasgupta
- Department of Chemistry, National Institute of Technology Patna, Patna - 800005, India.
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3
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Prakashni M, Dasgupta S. Synthesis of [2]Rotaxane‐Based pH‐Responsive Molecular Switch Involving a [23]Crown Ether Wheel, Dibenzylammonium and Methyl Triazolium Recognition Stations. ChemistrySelect 2023. [DOI: 10.1002/slct.202300553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Manisha Prakashni
- Department of Chemistry National Institute of Technology Patna Ashok Rajpath Patna 800005 Bihar India
| | - Suvankar Dasgupta
- Department of Chemistry National Institute of Technology Patna Ashok Rajpath Patna 800005 Bihar India
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4
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Prakashni M, Shukla R, Dasgupta S. Rapid and High-Yield Synthesis of [23]Crown Ether: Applied as a Wheel Component in the Formation of Pseudo[2]rotaxane and Synthesis of [2]Catenane with a Dibenzylammonium Dumbbell. J Org Chem 2021; 86:7825-7831. [PMID: 34019406 DOI: 10.1021/acs.joc.1c00674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A facile, rapid, and high yield synthesis of [23]crown ether (X23C7) has been developed from commercially available starting materials, in one step with good to excellent yield. The reaction is completed in 6 h under room temperature conditions, with the highest yield being 81%. The X23C7 macrocycle formed pseudo[2]rotaxane with a dibenzylammonium ion (DBA+) dumbbell, exhibiting strong association (Ka = 2.61 × 103 M-1). Consequently, a [2]catenane was synthesized from a DBA+-based diolefin terminated salt and X23C7 in 81% yield, using a threading-followed-ring-closing-metathesis approach.
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Affiliation(s)
- Manisha Prakashni
- Department of Chemistry, National Institute of Technology Patna, Patna - 800005, India
| | - Rasendra Shukla
- Department of Chemistry, National Institute of Technology Patna, Patna - 800005, India
| | - Suvankar Dasgupta
- Department of Chemistry, National Institute of Technology Patna, Patna - 800005, India
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5
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Itami T, Hashidzume A, Kamon Y, Yamaguchi H, Harada A. The macroscopic shape of assemblies formed from microparticles based on host-guest interaction dependent on the guest content. Sci Rep 2021; 11:6320. [PMID: 33737714 PMCID: PMC7973530 DOI: 10.1038/s41598-021-85816-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/08/2021] [Indexed: 11/08/2022] Open
Abstract
Biological macroscopic assemblies have inspired researchers to utilize molecular recognition to develop smart materials in these decades. Recently, macroscopic self-assemblies based on molecular recognition have been realized using millimeter-scale hydrogel pieces possessing molecular recognition moieties. During the study on macroscopic self-assembly based on molecular recognition, we noticed that the shape of assemblies might be dependent on the host-guest pair. In this study, we were thus motivated to study the macroscopic shape of assemblies formed through host-guest interaction. We modified crosslinked poly(sodium acrylate) microparticles, i.e., superabsorbent polymer (SAP) microparticles, with β-cyclodextrin (βCD) and adamantyl (Ad) residues (βCD(x)-SAP and Ad(y)-SAP microparticles, respectively, where x and y denote the mol% contents of βCD and Ad residues). Then, we studied the self-assembly behavior of βCD(x)-SAP and Ad(y)-SAP microparticles through the complexation of βCD with Ad residues. There was a threshold of the βCD content in βCD(x)-SAP microparticles for assembly formation between x = 22.3 and 26.7. On the other hand, the shape of assemblies was dependent on the Ad content, y; More elongated assemblies were formed at a higher y. This may be because, at a higher y, small clusters formed in an early stage can stick together even upon collisions at a single contact point to form elongated aggregates, whereas, at a smaller y, small clusters stick together only upon collisions at multiple contact points to give rather circular assemblies. On the basis of these observations, the shape of assembly formed from microparticles can be controlled by varying y.
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Affiliation(s)
- Takahiro Itami
- Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Akihito Hashidzume
- Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan.
| | - Yuri Kamon
- Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Akira Harada
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
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6
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Dong J, Li J, Wang H, Liu B, Peng B, Chen J, Lin S. Fabrication of Polypseudorotaxane-Based Responsive Film via Breath Figure Method. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a21030105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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7
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Vialetto J, Groppi J, La Rosa M, Silvi S, Credi A, Baroncini M. Solution and solid state photochromism in a family of shape persistent azobenzene tetramers functionalized with alkyloxy substituents. Photochem Photobiol Sci 2019; 18:2281-2286. [PMID: 30968923 DOI: 10.1039/c9pp00022d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Shape-persistent azobenzene tetramers functionalized at the periphery with alkyloxy substituents of different lengths have been synthesized and their photochemical behaviour has been investigated. Efficient E→Z photoisomerization of the azobenzene units takes place both in solution and in the solid state, a highly desirable yet uncommon property for azobenzene-type photochromic compounds. The solid state E→Z photoisomerization is accompanied by an isothermal crystal-amorphous phase transformation; successively, anisotropic crystals can be grown upon promoting the Z→E isomerization by thermal annealing of the irradiated samples. These results validate the strategy of engineering multiphotochromic architectures with a rigid star-shaped geometry to preserve the solution-based photoreactivity also in the solid state. The observed unexpected photoinduced alignment makes these materials potentially attractive for the development of photo-patternable and photo-responsive surfaces.
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Affiliation(s)
- Jacopo Vialetto
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Jessica Groppi
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy. and Istituto ISOF-CNR, Via Gobetti 101, 40129 Bologna, Italy
| | - Marcello La Rosa
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy.
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy. and Istituto ISOF-CNR, Via Gobetti 101, 40129 Bologna, Italy
| | - Massimo Baroncini
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy. and Istituto ISOF-CNR, Via Gobetti 101, 40129 Bologna, Italy
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8
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Weißenborn E, Braunschweig B. Hydroxypropyl cellulose as a green polymer for thermo-responsive aqueous foams. SOFT MATTER 2019; 15:2876-2883. [PMID: 30843017 PMCID: PMC6438354 DOI: 10.1039/c9sm00093c] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 02/06/2019] [Indexed: 05/31/2023]
Abstract
Hydroxypropyl cellulose (HPC) is a surface active polymer that can change its solubility as a function of temperature. This makes HPC interesting for responsive foams, where macroscopic properties need to be reversibly changed on demand. Analysis of aqueous HPC foams as a function of temperature showed a moderate decrease in foam half-life time from 9000 to 4000 s, when the temperature was increased. However, within a narrow temperature range of ±2 °C a dramatic decrease in half-life time to <120 s was observed at 43 °C in the absence and at 31 °C in the presence of 0.7 M NaCl. These drastic changes are highly reversible and are associated to the lower critical solution temperatures (LCST) of HPC in aqueous solutions. In fact, dynamic light scattering experiments indicate that HPC molecules form aggregates at temperatures >31 °C (0.7 M NaCl) and >43 °C (0 M NaCl), which shrink in size when the temperature is increased further. From these results, we conclude that the LCST of 1 MDa HPC is at 43 °C when no salt is present and is at 31 °C in aqueous solutions with 0.7 M NaCl. In addition, shear rheology of bulk solutions and surface tensiometry indicate that the solution's viscosity and the surface pressure dramatically change at the respective LCSTs. Obviously, the solvent's viscosity triggers substantial changes in foam drainage at the LCST, which is shown to be the main driving force for the temperature responsiveness of HPC foams.
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Affiliation(s)
- Eric Weißenborn
- Institute of Physical Chemistry and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany.
| | - Björn Braunschweig
- Institute of Physical Chemistry and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany.
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9
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Martinez-Cuezva A, Morales F, Marley GR, Lopez-Lopez A, Martinez-Costa JC, Bautista D, Alajarin M, Berna J. Thermally and Photochemically Induced Dethreading of Fumaramide-Based Kinetically Stable Pseudo[2]rotaxanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900073] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Fatima Morales
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Grace R. Marley
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Adrian Lopez-Lopez
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Juan Carlos Martinez-Costa
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | | | - Mateo Alajarin
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
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10
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Zhai Y, Bai X, Cui H, Zhu J, Liu W, Zhang T, Dong B, Pan G, Xu L, Zhang S, Song H. Carbon dot/polyvinylpyrrolidone hybrid nanofibers with efficient solid-state photoluminescence constructed using an electrospinning technique. NANOTECHNOLOGY 2018; 29:025706. [PMID: 29125471 DOI: 10.1088/1361-6528/aa99be] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Carbon dots (CDs) are the promising candidates for application in optoelectronic and biological areas due to their excellent photostability, unique photoluminescence, good biocompatibility, low toxicity and chemical inertness. However, the self-quenching of photoluminescence as they are dried into the solid state dramatically limits their further application. Therefore, realizing efficient photoluminescence and large-scale production of CDs in the solid state is an urgent challenge. Herein, solid-state hybrid nanofibers based on CDs and polyvinylpyrrolidone (PVP) are constructed through an electrospinning process. The resulting solid-state hybrid PVP/CD nanofibers present much enhanced photoluminescence performance compared to the corresponding pristine colloidal CDs due to the decrease in non-radiative recombination of electron-holes. Owing to the suppressed self-quenching of CDs, the photoluminescence quantum yield is considerably improved from 42.9% of pristine CDs to 83.5% of nanofibers under the excitation wavelength of 360 nm. This has great application potential in optical or optoelectronic devices.
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Affiliation(s)
- Yue Zhai
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China. College of Physics, Jilin University, Changchun 130012, People's Republic of China
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11
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Abstract
Complexation of metal ion controls the photoswitching of a push–pull azobenzene derivative.
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Affiliation(s)
- Yu Ouyang
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Ziyong Yuan
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Jiaobing Wang
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
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12
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Zhang J, Zheng T, Alarçin E, Byambaa B, Guan X, Ding J, Zhang YS, Li Z. Porous Electrospun Fibers with Self-Sealing Functionality: An Enabling Strategy for Trapping Biomacromolecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:10.1002/smll.201701949. [PMID: 29094479 PMCID: PMC5845855 DOI: 10.1002/smll.201701949] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/25/2017] [Indexed: 05/30/2023]
Abstract
Stimuli-responsive porous polymer materials have promising biomedical application due to their ability to trap and release biomacromolecules. In this work, a class of highly porous electrospun fibers is designed using polylactide as the polymer matrix and poly(ethylene oxide) as a porogen. Carbon nanotubes (CNTs) with different concentrations are further impregnated onto the fibers to achieve self-sealing functionality induced by photothermal conversion upon light irradiation. The fibers with 0.4 mg mL-1 of CNTs exhibit the optimum encapsulation efficiency of model biomacromolecules such as dextran, bovine serum albumin, and nucleic acids, although their photothermal conversion ability is slightly lower than the fibers with 0.8 mg mL-1 of CNTs. Interestingly, reversible reopening of the surface pores is accomplished with the degradation of PLA, affording a further possibility for sustained release of biomacromolecules after encapsulation. Effects of CNT loading on fiber morphology, structure, thermal/mechanical properties, degradation, and cell viability are also investigated. This novel class of porous electrospun fibers with self-sealing capability has great potential to serve as an enabling strategy for trapping/release of biomacromolecules with promising applications in, for example, preventing inflammatory diseases by scavenging cytokines from interstitial body fluids.
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Affiliation(s)
- Jin Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Ting Zheng
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Emine Alarçin
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Batzaya Byambaa
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Xiaofei Guan
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Zhongming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
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13
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Kimura M, Mizuno T, Ueda M, Miyagawa S, Kawasaki T, Tokunaga Y. Four-State Molecular Shuttling of [2]Rotaxanes in Response to Acid/Base and Alkali-Metal Cation Stimuli. Chem Asian J 2017; 12:1381-1390. [DOI: 10.1002/asia.201700493] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 04/10/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Masaki Kimura
- Department of Materials Science and Engineering; Faculty of Engineering; University of Fukui; Bunkyo Fukui 910-8507 Japan
| | - Takuma Mizuno
- Department of Materials Science and Engineering; Faculty of Engineering; University of Fukui; Bunkyo Fukui 910-8507 Japan
| | - Masahiro Ueda
- Department of Materials Science and Engineering; Faculty of Engineering; University of Fukui; Bunkyo Fukui 910-8507 Japan
| | - Shinobu Miyagawa
- Department of Materials Science and Engineering; Faculty of Engineering; University of Fukui; Bunkyo Fukui 910-8507 Japan
| | - Tsuneomi Kawasaki
- Department of Materials Science and Engineering; Faculty of Engineering; University of Fukui; Bunkyo Fukui 910-8507 Japan
| | - Yuji Tokunaga
- Department of Materials Science and Engineering; Faculty of Engineering; University of Fukui; Bunkyo Fukui 910-8507 Japan
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14
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Gao C, Luan ZL, Zhang Q, Yang S, Rao SJ, Qu DH, Tian H. Triggering a [2]Rotaxane Molecular Shuttle by a Photochemical Bond-Cleavage Strategy. Org Lett 2017; 19:1618-1621. [PMID: 28304173 DOI: 10.1021/acs.orglett.7b00393] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The successful triggering of ring-shuttling motion between two stations in a [2]rotaxane is demonstrated by employing a photochemical bond-cleavage strategy. A photolabile bulk barrier is covalently introduced into two identical stations of the thread to prevent dynamic shuttling of the macrocycle, resulting in a "gated" state. Irradiation of UV light (λ = 365 nm) results in the complete removal of the bulk barrier and the balanced shuttling motion of the macrocycle, indicating an "open" state of the rotaxane. In addition, the process from the "open" rotaxane to the "gated" rotaxane was executed by a chemical-rebonding method.
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Affiliation(s)
- Chuan Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
| | - Zhou-Lin Luan
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
| | - Shun Yang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
| | - Si-Jia Rao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
| | - He Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
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15
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On-line Ammonia Sensor and Invisible Security Ink by Fluorescent Zwitterionic Spirocyclic Meisenheimer Complex. Sci Rep 2017; 7:40465. [PMID: 28091542 PMCID: PMC5238453 DOI: 10.1038/srep40465] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 12/06/2016] [Indexed: 12/19/2022] Open
Abstract
Ammonia is not only a highly important gas for civilization but also contribute significantly for climate change and human health hazard. Highly sensitive ammonia sensor has been developed from a fluorescent zwitterionic spirocyclic Meisenheimer complex. Moreover, formation of this Meisenheimer complex can also be utilized for selective as well as naked eye instant detection of nitro aromatic explosive picric acid. The presence of a quaternary nitrogen atom directly attached to the spiro carbon is the unique feature of this Meisenheimer complex. This excellent photoluminescent (PL) Meisenheimer complex has two distinct stimuli responsive sites. One is sensitive towards acid while the other one is towards the base. These two positions can be modulated by adding one equivalent acid and one equivalent base to result two new products which are non fluorescent. One of these two non fluorescent species was found very exciting because of its UV/Vis transparency. Utilizing this concept we have fabricated an on-line sensor for measuring ammonia in dry or humid and condensing sewer air. The sensor was robust against ambient temperature and humidity variation. We have also developed an invisible ink from this Meisenheimer complex, with potential application for security purpose.
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16
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D'Anna F, Rizzo C, Vitale P, Marullo S, Ferrante F. Supramolecular complexes formed by dimethoxypillar[5]arenes and imidazolium salts: a joint experimental and computational investigation. NEW J CHEM 2017. [DOI: 10.1039/c7nj02598j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The stability of host–guest complexes formed by dimethoxypillar[5]arenes and imidazolium salts has been analyzed as a function of different structural features of the guest, using a combined approach of different techniques.
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Affiliation(s)
- Francesca D'Anna
- Dipartimento STEBICEF-Sezione di Chimica
- Viale delle Scienze Ed.17
- 90128 Palermo
- Italy
| | - Carla Rizzo
- Dipartimento STEBICEF-Sezione di Chimica
- Viale delle Scienze Ed.17
- 90128 Palermo
- Italy
| | - Paola Vitale
- Dipartimento STEBICEF-Sezione di Chimica
- Viale delle Scienze Ed.17
- 90128 Palermo
- Italy
| | - Salvatore Marullo
- Dipartimento STEBICEF-Sezione di Chimica
- Viale delle Scienze Ed.17
- 90128 Palermo
- Italy
| | - Francesco Ferrante
- Dipartimento di Fisica e Chimica
- Viale delle Scienze Ed.17
- 90128 Palermo
- Italy
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17
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Gholami G, Baggi G, Zhu K, Loeb SJ. Metal–organic frameworks utilising an interlocked, hexadentate linker containing a tetra-carboxylate axle and a bis(pyridine) wheel. Dalton Trans 2017; 46:2462-2470. [DOI: 10.1039/c6dt04596k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A mechanically interlocked ligand which combines an H-shaped axle containing four terminal 3-carboxyphenyl groups and a macrocyclic wheel with two 4-pyridyl groups was used to create Zn(ii) and Cu(ii) metal–organic framework materials that contain unique frameworks threaded solely due to the interpenetrated nature of the linker.
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Affiliation(s)
- Ghazale Gholami
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada N9B 3P4
| | - Giorgio Baggi
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada N9B 3P4
| | - Kelong Zhu
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- P. R. China
| | - Stephen J. Loeb
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada N9B 3P4
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18
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Shi J, You T, Gao Y, Liang X, Li C, Yin P. Large-scale preparation of flexible and reusable surface-enhanced Raman scattering platform based on electrospinning AgNPs/PCL nanofiber membrane. RSC Adv 2017. [DOI: 10.1039/c7ra09726c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A flexible and reusable SERS substrates were prepared by electrospinning Ag nanoparticles in reversed micelle into poly(ε-caprolactone) nanofibers.
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Affiliation(s)
- Jihua Shi
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education
- School of Chemistry
- Beihang University
- Beijing
- China
| | - Tingting You
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education
- School of Chemistry
- Beihang University
- Beijing
- China
| | - Yukun Gao
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education
- School of Chemistry
- Beihang University
- Beijing
- China
| | - Xiu Liang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education
- School of Chemistry
- Beihang University
- Beijing
- China
| | - Chenling Li
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education
- School of Chemistry
- Beihang University
- Beijing
- China
| | - Penggang Yin
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education
- School of Chemistry
- Beihang University
- Beijing
- China
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19
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Light-driven molecular machines based on ruthenium(II) polypyridine complexes: Strategies and recent advances. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.02.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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López-Moreno A, Nieto-Ortega B, Moffa M, de Juan A, Bernal MM, Fernández-Blázquez JP, Vilatela JJ, Pisignano D, Pérez EM. Threading through Macrocycles Enhances the Performance of Carbon Nanotubes as Polymer Fillers. ACS NANO 2016; 10:8012-8. [PMID: 27454946 PMCID: PMC4997533 DOI: 10.1021/acsnano.6b04028] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 07/25/2016] [Indexed: 05/03/2023]
Abstract
In this work, we study the reinforcement of polymers by mechanically interlocked derivatives of single-walled carbon nanotubes (SWNTs). We compare the mechanical properties of fibers made of polymers and of composites with pristine SWNTs, mechanically interlocked derivatives of SWNTs (MINTs), and the corresponding supramolecular models. Improvements of both Young's modulus and tensile strength of up to 200% were observed for the polystyrene-MINT samples with an optimized loading of just 0.01 wt %, while the supramolecular models with identical chemical composition and loading showed negligible or even detrimental influence. This behavior is found for three different types of SWNTs and two types of macrocycles. Molecular dynamics simulations show that the polymer adopts an elongated conformation parallel to the SWNT when interacting with MINT fillers, irrespective of the macrocycle chemical nature, whereas a more globular structure is taken upon facing with either pristine SWNTs or supramolecular models. The MINT composite architecture thus leads to a more efficient exploitation of the axial properties of the SWNTs and of the polymer chain at the interface, in agreement with experimental results. Our findings demonstrate that the mechanical bond imparts distinctive advantageous properties to SWNT derivatives as polymer fillers.
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Affiliation(s)
- Alejandro López-Moreno
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | - Belén Nieto-Ortega
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | - Maria Moffa
- Istituto
Nanoscienze-CNR, Euromediterranean Center of Nanomaterial Modelling
and Technology (ECMT), via Arnesano, 73100 Lecce, Italy
| | - Alberto de Juan
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | - M. Mar Bernal
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | | | | | - Dario Pisignano
- Istituto
Nanoscienze-CNR, Euromediterranean Center of Nanomaterial Modelling
and Technology (ECMT), via Arnesano, 73100 Lecce, Italy
- Dipartimento
di Matematica e Fisica “Ennio De Giorgi”, Università del Salento, via Arnesano, 73100 Lecce, Italy
| | - Emilio M. Pérez
- IMDEA
Nanoscience, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
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21
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Gholami G, Zhu K, Ward JS, Kruger PE, Loeb SJ. Formation of a Polythreaded, Metal-Organic Framework Utilizing an Interlocked Hexadentate, Carboxylate Linker. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600311] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ghazale Gholami
- Department of Chemistry and Biochemistry; University of Windsor; N9B 3P4 Windsor Ontario Canada
| | - Kelong Zhu
- Department of Chemistry and Biochemistry; University of Windsor; N9B 3P4 Windsor Ontario Canada
| | - Jas S. Ward
- MacDiarmid Institute for Advanced Materials and Nanotechnology; Department of Chemistry; University of Canterbury; Private Bag 4800 8041 Christchurch New Zealand
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology; Department of Chemistry; University of Canterbury; Private Bag 4800 8041 Christchurch New Zealand
| | - Stephen J. Loeb
- Department of Chemistry and Biochemistry; University of Windsor; N9B 3P4 Windsor Ontario Canada
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22
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Farahani N, Zhu K, O'Keefe CA, Schurko RW, Loeb SJ. Thermally Driven Dynamics of a Rotaxane Wheel about an Imidazolium Axle inside a Metal-Organic Framework. Chempluschem 2016; 81:836-841. [PMID: 31968814 DOI: 10.1002/cplu.201600176] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Indexed: 01/28/2023]
Abstract
A new mechanically interlocked molecular linker was prepared by using ring-closing metathesis (Grubbs I) to clip a [24]crown-6 ether wheel around an axle containing both Y-shaped diphenylimidazole and isophthalic acid groups. A metal-organic framework (MOF) material was prepared using this linker and ZnII ions. Single-crystal X-ray diffraction experiments showed that the MOF contains an imidazolium-based rotaxane linked by dimeric [Zn2 (NO3 )(DEF)] secondary building units (SBUs). Variable-temperature (VT), 2 H solid-state NMR spectroscopy was used to characterize the motion of the "soft" wheel component around the rigid "hard" lattice of the framework. At higher temperatures (above 150 °C), it was demonstrated that the 24-membered, macrocyclic ring of the MOF undergoes rapid, thermally driven rotation about the axle inside the voids of the lattice.
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Affiliation(s)
- Nasim Farahani
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Kelong Zhu
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Christopher A O'Keefe
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Robert W Schurko
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Stephen J Loeb
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, N9B 3P4, Canada
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23
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Schäfer C, Ragazzon G, Colasson B, La Rosa M, Silvi S, Credi A. An Artificial Molecular Transporter. ChemistryOpen 2016; 5:120-4. [PMID: 27308223 PMCID: PMC4906471 DOI: 10.1002/open.201500217] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Indexed: 11/12/2022] Open
Abstract
The transport of substrates is one of the main tasks of biomolecular machines in living organisms. We report a synthetic small-molecule system designed to catch, displace, and release molecular cargo in solution under external control. The system consists of a bistable rotaxane that behaves as an acid-base controlled molecular shuttle, whose ring component bears a tether ending with a nitrile group. The latter can be coordinated to a ruthenium complex that acts as the load, and dissociated upon irradiation with visible light. The cargo loading/unloading and ring transfer/return processes are reversible and can be controlled independently. The robust coordination bond ensures that the cargo remains attached to the device while the transport takes place.
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Affiliation(s)
- Christian Schäfer
- Photochemical Nanosciences LaboratoryDipartimento di Chimica “G. Ciamician”Alma Mater Studiorum-Università di Bolognavia Selmi 240126BolognaItaly
| | - Giulio Ragazzon
- Photochemical Nanosciences LaboratoryDipartimento di Chimica “G. Ciamician”Alma Mater Studiorum-Università di Bolognavia Selmi 240126BolognaItaly
| | - Benoit Colasson
- Photochemical Nanosciences LaboratoryDipartimento di Chimica “G. Ciamician”Alma Mater Studiorum-Università di Bolognavia Selmi 240126BolognaItaly
| | - Marcello La Rosa
- Photochemical Nanosciences LaboratoryDipartimento di Chimica “G. Ciamician”Alma Mater Studiorum-Università di Bolognavia Selmi 240126BolognaItaly
| | - Serena Silvi
- Photochemical Nanosciences LaboratoryDipartimento di Chimica “G. Ciamician”Alma Mater Studiorum-Università di Bolognavia Selmi 240126BolognaItaly
| | - Alberto Credi
- Photochemical Nanosciences LaboratoryDipartimento di Chimica “G. Ciamician”Alma Mater Studiorum-Università di Bolognavia Selmi 240126BolognaItaly
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24
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Abstract
The past quarter of a century has witnessed an increasing engagement on the part of physicists and chemists in the design and synthesis of molecular machines de novo. This minireview traces the development of artificial molecular machines from their prototypes in the form of shuttles and switches to their emergence as motors and pumps where supplies of energy in the form of chemical fuel, electrochemical potential and light activation become a minimum requirement for them to function away from equilibrium. The challenge facing this rapidly growing community of scientists and engineers today is one of putting wholly synthetic molecules to work, both individually and as collections. Here, we highlight some of the recent conceptual and practical advances relating to the operation of wholly synthetic rotary and linear motors.
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Affiliation(s)
- Chuyang Cheng
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL, 60208, USA
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL, 60208, USA.
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25
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Wang X, Yang Y, Gao P, Yang F, Shen H, Guo H, Wu D. Synthesis, Self-Assembly, and Photoresponsive Behavior of Tadpole-Shaped Azobenzene Polymers. ACS Macro Lett 2015; 4:1321-1326. [PMID: 35614776 DOI: 10.1021/acsmacrolett.5b00698] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a feasible method to prepare a tadpole-shaped PEG-POSS-(Azo)7 polymer. The polymer self-assembled into a large vesicle in aqueous solution, undergoing reversible smooth-curling transformation responsive to UV and dark conditions. Incorporating POSS units into the azopolymer furnished quick trans-cis isomerization along a cubic orientation. The orientational isomerization formed some pores on the vesicular membrane and endowed the highly sensitive photoresponsive property. Encapsulation of various fluorescent dyes affected the hydrophilic/hydrophobic ratio of self-assemblies, causing their morphological transition from vesicles to micelles. Response to UV irradiation, the quick trans-cis isomerization resulted in rapid release of the encapsulated dyes. The intriguing photoresponsive property renders this kind of tadpole-shaped POSS hybrid azopolymer a potential for application in controlled release of drug.
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Affiliation(s)
- Xing Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yanyu Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Peiyuan Gao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hong Shen
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hongxia Guo
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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26
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Li Z, Liang R, Liu W, Yan D, Wei M. A dual-stimuli-responsive fluorescent switch ultrathin film. NANOSCALE 2015; 7:16737-16743. [PMID: 26400734 DOI: 10.1039/c5nr05376e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Stimuli-responsive fluorescent switches have shown broad applications in optical devices, biological materials and intelligent responses. Herein, we describe the design and fabrication of a dual-stimuli-responsive fluorescent switch ultrathin film (UTF) via a three-step layer-by-layer (LBL) technique: (i) encapsulation of spiropyran (SP) within an amphiphilic block copolymer (PTBEM) to give the (SP@PTBEM) micelle; (ii) the mixture of riboflavin (Rf) and poly(styrene 4-sulfonate) (PSS) to enhance the adhesion ability of small molecules; (iii) assembly of negatively charged SP@PTBEM and Rf-PSS with cationic layered double hydroxide (LDH) nanoplatelets to obtain the (Rf-PSS/LDH/SP@PTBEM)n UTFs (n: bilayer number). The assembly process of the UTFs and their luminescence properties, as monitored by fluorescence spectroscopy and scanning electron microscopy (SEM), present a uniform and ordered layered structure with stepwise growth. The resulting Rf-PSS/LDH/SP@PTBEM UTF serves as a three-state switchable multicolor (green, yellow, and red) luminescent system based on stimulation from UV/Vis light and pH, with an acceptable reversibility. Therefore, this work provides a facile way to fabricate stimuli-responsive solid-state film switches with tunable-color luminescence, which have potential applications in the areas of displays, sensors, and rewritable optical memory and fluorescent logic devices.
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Affiliation(s)
- Zhixiong Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Box 98, Beijing 100029, P. R. China.
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27
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Affiliation(s)
- Sundus Erbas-Cakmak
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - David A. Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Charlie T. McTernan
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Alina
L. Nussbaumer
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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28
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Vukotic VN, O’Keefe CA, Zhu K, Harris KJ, To C, Schurko RW, Loeb SJ. Mechanically Interlocked Linkers inside Metal–Organic Frameworks: Effect of Ring Size on Rotational Dynamics. J Am Chem Soc 2015; 137:9643-51. [DOI: 10.1021/jacs.5b04674] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- V. Nicholas Vukotic
- Department of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
| | - Christopher A. O’Keefe
- Department of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
| | - Kelong Zhu
- Department of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
| | - Kristopher J. Harris
- Department of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
| | - Christine To
- Department of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
| | - Robert W. Schurko
- Department of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
| | - Stephen J. Loeb
- Department of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
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29
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Baroncini M, Ragazzon G, Silvi S, Venturi M, Credi A. The eternal youth of azobenzene: new photoactive molecular and supramolecular devices. PURE APPL CHEM 2015. [DOI: 10.1515/pac-2014-0903] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
AbstractThe development of multicomponent chemical systems that can perform predetermined functions under external control – i.e., molecular devices – is a challenging task in chemistry and a fascinating objective in the frame of a bottom-up approach to nanostructures. Photochromic units undergo profound changes in their chemical and/or electronic structure upon light excitation, and are highly interesting for the construction of photocontrollable molecular devices, machines and materials. The E–Z photoisomerization of azobenzene – owing to its high efficiency, excellent reversibility and significant physico-chemical differences between the two forms – is a highly useful reaction in this regard. Azobenzene photoisomerization has been known for almost 80 years and has been exploited to implement light-induced functionalities with a large variety of compounds, biomolecules, nanosystems and materials. Here we present some of our recent investigations highlighting how this outstanding photochrome can be utilized to develop (supra)molecular systems with valuable light-induced functionalities.
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Affiliation(s)
- Massimo Baroncini
- 1Photochemical Nanosciences Laboratory, Dipartimento di Chimica “G. Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Giulio Ragazzon
- 1Photochemical Nanosciences Laboratory, Dipartimento di Chimica “G. Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Serena Silvi
- 1Photochemical Nanosciences Laboratory, Dipartimento di Chimica “G. Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Margherita Venturi
- 1Photochemical Nanosciences Laboratory, Dipartimento di Chimica “G. Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Alberto Credi
- 1Photochemical Nanosciences Laboratory, Dipartimento di Chimica “G. Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy
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30
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Zappacosta R, Fontana A, Credi A, Arduini A, Secchi A. Incorporation of Calix[6]Arene Macrocycles and (Pseudo)Rotaxanes in Bilayer Membranes: Towards Controllable Artificial Liposomal Channels. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201402244] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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31
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Anton AM, Gutsche C, Kossack W, Kremer F. Methods to determine the pressure dependence of the molecular order parameter in (bio)macromolecular fibres. SOFT MATTER 2015; 11:1158-1164. [PMID: 25557527 DOI: 10.1039/c4sm01142b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The experimental realization and an algorithm for analysing the pressure dependence of the molecular order parameter of specific structural moieties in (bio)macromolecular fibres are described. By employing a diamond anvil cell (DAC) the polarization-dependent IR-transmission and in parallel, using an integrated microscope, the macroscopic orientation of the fibres is determined. This enables one to separate between order and disorder at macroscopic and microscopic scales. Using the example of spider silk the pressure dependence of the molecular order parameter of alanine groups being located within nano-crystalline building blocks is deduced and found to decrease reversibly by 0.01 GPa(-1) when varying the external hydrostatic pressure between 0 and 3 GPa.
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Affiliation(s)
- Arthur Markus Anton
- Universität Leipzig, Fakultät für Physik und Geowissenschaften, Institut für Experimentelle Physik I, Abteilung Molekülphysik, Linnéstraße 5, D-04103 Leipzig, Germany.
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32
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Wang J, Zhang YM, Zhang XJ, Zhao XJ, Liu Y. Light-Controlled [3]Pseudorotaxane Based on Tetrasulfonated 1,5-Dinaphtho-32-Crown-8 and α-Cyclodextrin. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201402238] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Cao ZQ, Miao Q, Zhang Q, Li H, Qu DH, Tian H. A fluorescent bistable [2]rotaxane molecular switch on SiO2 nanoparticles. Chem Commun (Camb) 2015; 51:4973-6. [DOI: 10.1039/c4cc09976a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A fluorescent bistable [2]rotaxane was immobilized onto the surface of SiO2 nanoparticles through click reaction. The shuttling motion of the macrocycle component was driven by external acid–base stimuli both in solution and on SiO2 nanoparticles, accompanied by visual fluorescence changes.
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Affiliation(s)
- Zhan-Qi Cao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Qi Miao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hong Li
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - He Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
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34
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Xiong S, Zhang X, Meng LB, Jiang J, Lin C, Wang L. Novel pseudo[2]rotaxanes constructed by the self-assembly of dibenzyl tetramethylene bis-carbamate derivatives and per-ethylated pillar[5]arene. Chem Commun (Camb) 2015; 51:6504-7. [DOI: 10.1039/c5cc01345c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel pseudo[2]rotaxanes based on per-ethylated pillar[5]arene and neutral guests G1/G7 were successfully constructed. Particularly, the pseudo[2]rotaxane constructed from per-ethylated pillar[5]arene and G7 showed photoresponsive properties.
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Affiliation(s)
- Shuhan Xiong
- State Key Laboratory of Coordination Chemistry
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Xiaoning Zhang
- State Key Laboratory of Coordination Chemistry
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Lu-Bo Meng
- State Key Laboratory of Coordination Chemistry
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Juli Jiang
- State Key Laboratory of Coordination Chemistry
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Chen Lin
- State Key Laboratory of Coordination Chemistry
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Leyong Wang
- State Key Laboratory of Coordination Chemistry
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
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35
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Zhang P, Li J, Li B, Xu J, Zeng F, Lv J, Wu S. A logic gate-based fluorescent sensor for detecting H2S and NO in aqueous media and inside live cells. Chem Commun (Camb) 2015; 51:4414-6. [DOI: 10.1039/c4cc09737h] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A single fluorescent probe herein can sensitively and selectively detect H2S and NO in solution and in cells by using a logic gate approach.
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Affiliation(s)
- Peisheng Zhang
- College of Materials Science & Engineering
- State Key Lab of Luminescent Materials & Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Jun Li
- College of Materials Science & Engineering
- State Key Lab of Luminescent Materials & Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Bowen Li
- College of Materials Science & Engineering
- State Key Lab of Luminescent Materials & Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Jiangsheng Xu
- College of Materials Science & Engineering
- State Key Lab of Luminescent Materials & Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Fang Zeng
- College of Materials Science & Engineering
- State Key Lab of Luminescent Materials & Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Jun Lv
- College of Materials Science & Engineering
- State Key Lab of Luminescent Materials & Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Shuizhu Wu
- College of Materials Science & Engineering
- State Key Lab of Luminescent Materials & Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| |
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