51
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Takai A, Kajitani T, Fukushima T, Kishikawa K, Yasuda T, Takeuchi M. Supramolecular Assemblies of Ferrocene-Hinged Naphthalenediimides: Multiple Conformational Changes in Film States. J Am Chem Soc 2016; 138:11245-53. [PMID: 27564327 DOI: 10.1021/jacs.6b05824] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We design a new naphthalenediimide (NDI) π-system, NDI-Fc-NDI, having a ferrocene linker as a hinge unit and long alkyl chains as supramolecular assembling units. The NDI units are "directionally flexible" in concert with the pivoting motion of the ferrocene unit with a small rotational barrier. The NDI units rotate around the ferrocene unit faster than the NMR time scale in solution at room temperature. UV-vis absorption, synchrotron X-ray diffraction, and atomic force microscope studies reveal that NDI-Fc-NDI forms a fibrous supramolecular assembly in solution (methylcyclohexane and highly concentrated chloroform) and film states, wherein the NDI units are in the slipped-stack conformation. The NDI-Fc-NDI supramolecular assembly in the film state exhibits multiple phase transitions associated with conformational changes at different temperatures, which are confirmed by differential scanning calorimetry, polarized optical microscopy, and temperature-dependent X-ray diffraction. Such thermal transitions of NDI-Fc-NDI films also induce changes in the optical and electronic properties as revealed by UV-vis absorption and photoelectron yield spectroscopies, respectively. The thermal behaviors of NDI-Fc-NDI, realized by the unique molecular design, are considerably different from the reference compounds such as an NDI dimer connected with a flexible 1,4-butylene linker. These results provide us with a plausible strategy to propagate the molecular dynamics of the π-system into macroscopic properties in film states; the key factors are (i) the supramolecular alignment of molecular switching units and (ii) the directional motion of the switching units perpendicular to the supramolecular axis.
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Affiliation(s)
- Atsuro Takai
- International Center for Young Scientists, Semiconductor Nano-interfaces Group, and Molecular Design & Function Group, National Institute for Materials Science (NIMS) , 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Takashi Kajitani
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.,RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Keiki Kishikawa
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Takeshi Yasuda
- International Center for Young Scientists, Semiconductor Nano-interfaces Group, and Molecular Design & Function Group, National Institute for Materials Science (NIMS) , 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Masayuki Takeuchi
- International Center for Young Scientists, Semiconductor Nano-interfaces Group, and Molecular Design & Function Group, National Institute for Materials Science (NIMS) , 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
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52
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Karmakar A, Kundu K, Ghosh S, Mukhopadhyay C, Nayak SK, Chaudhuri T. Recognition of steric factor in external association of xanthenocrown-5 and bis-napthalenocrown-6 with bis(benzimidazolium)propane borontetrafluoride. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 159:141-145. [PMID: 26836456 DOI: 10.1016/j.saa.2016.01.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 01/09/2016] [Accepted: 01/23/2016] [Indexed: 06/05/2023]
Abstract
This is the first report of charge transfer band for crown-axel H-bonding interaction in acetonitrile medium. Monte Carlo simulation established external association of small cavity crown with BBIM-propane dication axels. Resonance energy, binding constant and ratiometric detection of association of xanthenocrown-5 (1) and bis-napthalenocrown-6 (2) with bis-(benzimidazolium)propane borontetrafluoride (3a-3d) in acetonitrile determined the effect of steric factor towards association.
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Affiliation(s)
- Animesh Karmakar
- Department of Chemistry, Dr. Bhupendranath Dutta Smriti Mahavidyalaya, Burdwan 713407, India
| | - Kshama Kundu
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Sabari Ghosh
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Chhanda Mukhopadhyay
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Sandip K Nayak
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Tandrima Chaudhuri
- Department of Chemistry, Dr. Bhupendranath Dutta Smriti Mahavidyalaya, Burdwan 713407, India.
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53
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Qi Q, Xi CG, Wang H, Zhang DW, Li ZT. Stacking of bipyridinium radical cations incorporated in rigid conjugated polymers. Supramol Chem 2016. [DOI: 10.1080/10610278.2016.1165348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Qi Qi
- Department of Chemistry, Fudan University, Shanghai, P.R. China
| | - Cheng-Gang Xi
- Department of Chemistry, Fudan University, Shanghai, P.R. China
| | - Hui Wang
- Department of Chemistry, Fudan University, Shanghai, P.R. China
| | - Dan-Wei Zhang
- Department of Chemistry, Fudan University, Shanghai, P.R. China
| | - Zhan-Ting Li
- Department of Chemistry, Fudan University, Shanghai, P.R. China
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54
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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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55
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Zhang XP, Liu FQ, Lai JC, Li CH, Li AM, You XZ. Novel redox responsive chiral cyclometalated platinum(ii) complexes with pinene functionalized C^N^N ligands. NEW J CHEM 2016. [DOI: 10.1039/c5nj02932e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A couple of unprecedented platinum(iv) complexes have been facilely prepared, and distinct chiroptical performances are exhibited.
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Affiliation(s)
- Xiao-Peng Zhang
- State Key Laboratory of Pollution Control and Resource Reuse
- School of the Environment
- Nanjing University
- Nanjing 210046
- People’s Republic of China
| | - Fu-Qiang Liu
- State Key Laboratory of Pollution Control and Resource Reuse
- School of the Environment
- Nanjing University
- Nanjing 210046
- People’s Republic of China
| | - Jian-Cheng Lai
- State Key laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing university
- Nanjing 210093
| | - Cheng-Hui Li
- State Key laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing university
- Nanjing 210093
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resource Reuse
- School of the Environment
- Nanjing University
- Nanjing 210046
- People’s Republic of China
| | - Xiao-Zeng You
- State Key laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing university
- Nanjing 210093
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56
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Scottwell SØ, Crowley JD. Ferrocene-containing non-interlocked molecular machines. Chem Commun (Camb) 2016; 52:2451-64. [DOI: 10.1039/c5cc09569g] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ferrocene is chemically robust and readily functionalized which enables its facile incorporation into more complex molecular systems. This coupled with ferrocene's reversible redox properties and ability to function as a “molecular ball bearing” has led to the use of ferrocene as a component in wide range of non-interlocked synthetic molecular machine systems.
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57
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Ji L, Yang Z, Zhao Y, Sun M, Cao L, Yang XJ, Wang YY, Wu B. Sandwich phosphate complexes of macrocyclic tris(urea) ligands and their rotation around the anion. Chem Commun (Camb) 2016; 52:7310-3. [DOI: 10.1039/c6cc03144g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sandwich-type phosphate complexes were formed by macrocyclic ligands incorporating both anion- (tris-urea unit) and cation-binding sites (polyether), which display a reversible rotation around the anion upon protonation/deprotonation of phosphate and binding of the cation (Emim+).
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Affiliation(s)
- Liguo Ji
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Zaiwen Yang
- College of Chemistry and Chemical Engineering
- Xi'an University of Science and Technology
- Xi'an 710054
- China
| | - Yanxia Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Meng Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Liping Cao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Xiao-Juan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
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58
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Ie Y, Okamoto Y, Tone S, Aso Y. Synthesis, Properties, and π-Dimer Formation of Oligothiophenes Partially Bearing Orthogonally Fused Fluorene Units. Chemistry 2015; 21:16688-95. [PMID: 26407071 DOI: 10.1002/chem.201502606] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Indexed: 11/07/2022]
Abstract
A series of oligothiophenes that incorporate cyclopenta[c]thiophene-based units bearing spiro-substituted dialkylfluorene was synthesized. Photophysical measurements indicated that there was no interruption in the conjugation along the oligothiophene backbones, irrespective of the number or position of this unit. Electrochemical measurements showed that the thiophene 7-mers and 11-mer exhibit reversible multi-oxidation waves. The formation of cationic species was clearly observed from UV/Vis/NIR measurements. Furthermore, the UV/Vis/NIR spectra at 223 K under one-electron oxidation conditions revealed that the unsubstituted thiophene or bithiophene units remained in the absence of intermolecular π-π interactions, whereas the formation of π-dimeric species was observed for the thiophene 7-mer containing an unsubstituted terthiophene (U3 ) unit. Theoretical calculations indicated that the combination of the U3 unit and the all-trans conformation decreased the intermolecular steric repulsion between the fused cyclopentene ring and its facing thiophene, which may contribute to the formation of the dimeric structure.
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Affiliation(s)
- Yutaka Ie
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan).
| | - Yuji Okamoto
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)
| | - Saori Tone
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)
| | - Yoshio Aso
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan).
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59
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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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60
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Kahlfuss C, Milet A, Wytko J, Weiss J, Saint-Aman E, Bucher C. Hydrogen-Bond Controlled π-Dimerization in Viologen-Appended Calixarenes: Revealing a Subtle Balance of Weak Interactions. Org Lett 2015; 17:4058-61. [PMID: 26270244 DOI: 10.1021/acs.orglett.5b01982] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Christophe Kahlfuss
- Laboratoire
de Chimie (UMR 5182), École Normale Supérieure de Lyon/CNRS Université de Lyon 1, Lyon, France
| | - Anne Milet
- Département
de Chimie Moléculaire (UMR 5250), Université Joseph Fourier/CNRS, Grenoble, France
| | - Jennifer Wytko
- Institut
de Chimie, UMR 7177 CNRS-Université de Strasbourg, 1 rue
Blaise Pascal, 67008 Strasbourg cedex, France
| | - Jean Weiss
- Institut
de Chimie, UMR 7177 CNRS-Université de Strasbourg, 1 rue
Blaise Pascal, 67008 Strasbourg cedex, France
| | - Eric Saint-Aman
- Département
de Chimie Moléculaire (UMR 5250), Université Joseph Fourier/CNRS, Grenoble, France
| | - Christophe Bucher
- Laboratoire
de Chimie (UMR 5182), École Normale Supérieure de Lyon/CNRS Université de Lyon 1, Lyon, France
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61
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Shi W, Xing F, Bai YL, Hu M, Zhao Y, Li MX, Zhu S. High Sensitivity Viologen for a Facile and Versatile Sensor of Base and Solvent Polarity in Solution and Solid State in Air Atmosphere. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14493-14500. [PMID: 26066088 DOI: 10.1021/acsami.5b03932] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Viologen cations are excellent electro- and photochromic materials. They generally have no response or very low sensitivity to bases. In this paper, three compounds, 1,1'-bis(2-oxo-2-phenylethyl)-4,4'-bipyridinium (viologen) with different substituents, including H (1), Cl (2), and OH (3), were synthesized. All three, especially 1 and 2, have very high sensitivity to base in both solution and solid state in air atmosphere. These viologens are responsive not only to bases but also to solvent polarity. NMR shows 1 became enolic and then a radical, whereas 3 is colored only in the radical form. These results are in agreement with EPR spectra. Crystal structures show that the C-C that links two pyridinium and N-C distances in coplanar pyridinium in the colored (radical) form is clearly longer than that of the pale-yellow form, indicating that the color is due to the viologen radical. Viologens containing an electron-withdrawing phenacetyl group are the most sensitive compounds for fast, naked eye detection of base and solvent polarity.
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Affiliation(s)
- Wei Shi
- Innovative Drug Center, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Feifei Xing
- Innovative Drug Center, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Yue-Ling Bai
- Innovative Drug Center, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Meiling Hu
- Innovative Drug Center, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Yongmei Zhao
- Innovative Drug Center, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Ming-Xing Li
- Innovative Drug Center, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Shourong Zhu
- Innovative Drug Center, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
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62
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Conjugated radical cation dimerization-driven generation of supramolecular architectures. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.01.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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63
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Mochida T, Funasako Y, Nezu Y, Hagiwara K, Horikoshi R. Ferrocenyl–Bipyridinium Cations and Their Platinum Complexes Related to Viologens – Preparation, Redox Properties, and Crystal Structures. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tomoyuki Mochida
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Hyogo 657‐8501, Japan, http://www2.kobe‐u.ac.jp/~mochida/en/
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba 274‐8510, Japan
| | - Yusuke Funasako
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Hyogo 657‐8501, Japan, http://www2.kobe‐u.ac.jp/~mochida/en/
| | - Yukiko Nezu
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba 274‐8510, Japan
| | - Koji Hagiwara
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba 274‐8510, Japan
| | - Ryo Horikoshi
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba 274‐8510, Japan
- Department of Chemistry, College of General Education, Osaka Sangyo University, Nakagaito, Daito, Osaka 574‐8530, Japan
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64
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Nikitin K, Muldoon J, Müller-Bunz H, McGlinchey MJ. A Ferrocenyl Kaleidoscope: Slow Interconversion of Six Diastereo-atropisomers of 2,6-Di-tert-butyl-9,10-diferrocenyltriptycene. Chemistry 2015; 21:4664-70. [DOI: 10.1002/chem.201405968] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Indexed: 11/10/2022]
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65
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Le Poul N, Colasson B. Electrochemically and Chemically Induced Redox Processes in Molecular Machines. ChemElectroChem 2015. [DOI: 10.1002/celc.201402399] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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66
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Wang Y, Frasconi M, Liu WG, Liu Z, Sarjeant AA, Nassar MS, Botros YY, Goddard WA, Stoddart JF. Folding of Oligoviologens Induced by Radical–Radical Interactions. J Am Chem Soc 2015; 137:876-85. [DOI: 10.1021/ja5111305] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuping Wang
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Marco Frasconi
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Wei-Guang Liu
- Materials
and Process Simulation Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - Zhichang Liu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Amy A. Sarjeant
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Majed S. Nassar
- Joint
Center of Excellence in Integrated Nano-Systems (JCIN), King Abdul-Aziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - Youssry Y. Botros
- Joint
Center of Excellence in Integrated Nano-Systems (JCIN), King Abdul-Aziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
- University
Research Office, Intel Corporation, Building RNB-6-61, 2200 Mission
College Boulevard, Santa Clara, California 95054, United States
| | - William A. Goddard
- Materials
and Process Simulation Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - J. Fraser Stoddart
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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67
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Schmittel M, De S, Pramanik S. Redox-dependent self-sorting toggles a rotary nanoswitch. Org Biomol Chem 2015. [DOI: 10.1039/c5ob01041a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The pyridine–pyrimidine (py–pym) arm as the moving part of the two-state nanomechanical rotary switch [Cu(1)]+ is toggled reversibly between two stations using one-electron oxidation/reduction.
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Affiliation(s)
- Michael Schmittel
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Soumen De
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Susnata Pramanik
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
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68
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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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69
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Berville M, Karmazin L, Wytko JA, Weiss J. Viologen cyclophanes: redox controlled host–guest interactions. Chem Commun (Camb) 2015; 51:15772-5. [DOI: 10.1039/c5cc06041a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis(viologen) cyclophanes with alkyl linkers demonstrate redox-dependent host–guest properties, including the formation of a crystalline mixed valence species.
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Affiliation(s)
- Mathilde Berville
- CLAC
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS-Université de Strasbourg
- 67000 Strasbourg
- France
| | - Lydia Karmazin
- Service de Cristallographie
- GDS 3648
- CNRS-Université de Strasbourg
- 67000 Strasbourg
- France
| | - Jennifer A. Wytko
- CLAC
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS-Université de Strasbourg
- 67000 Strasbourg
- France
| | - Jean Weiss
- CLAC
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS-Université de Strasbourg
- 67000 Strasbourg
- France
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70
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Scottwell SØ, Elliott ABS, Shaffer KJ, Nafady A, McAdam CJ, Gordon KC, Crowley JD. Chemically and electrochemically induced expansion and contraction of a ferrocene rotor. Chem Commun (Camb) 2015; 51:8161-4. [DOI: 10.1039/c5cc01973g] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A 2,2′-bipyridine-appended ferrocene rotor can be switched, upon treatment with [Cu(CH3CN)4](PF6) and 6,6′-dimesityl-2,2′-bipyridine, from the stacked (syn) conformation to the unstacked (anti) conformation. The switching was completely reversible and could be triggered either chemically, or electrochemically.
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Affiliation(s)
| | - Anastasia B. S. Elliott
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Karl J. Shaffer
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
| | - Ayman Nafady
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - C. John McAdam
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
| | - Keith C. Gordon
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
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71
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Kahlfuss C, Métay E, Duclos MC, Lemaire M, Milet A, Saint-Aman E, Bucher C. Chemically and Electrochemically Triggered Assembly of Viologen Radicals: Towards Multiaddressable Molecular Switches. Chemistry 2014; 21:2090-106. [DOI: 10.1002/chem.201405157] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Indexed: 12/23/2022]
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72
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Hirose T, Tsunoi Y, Fujimori Y, Matsuda K. Fluorescence Enhancement of Covalently Linked 1-Cyano-1,2-diphenylethene Chromophores with Naphthalene-1,8-diyl Linker Units: Analysis Based on Kinetic Constants. Chemistry 2014; 21:1637-44. [DOI: 10.1002/chem.201404745] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Indexed: 11/08/2022]
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73
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Noor A, Maloney DL, Lewis JEM, Lo WKC, Crowley JD. Acid-Base Driven Ligand Exchange with Palladium(II) “Click” Complexes. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402197] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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74
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Li H, Li X, Cao ZQ, Qu DH, Ågren H, Tian H. A switchable bis-branched [1]rotaxane featuring dual-mode molecular motions and tunable molecular aggregation. ACS APPLIED MATERIALS & INTERFACES 2014; 6:18921-18929. [PMID: 25302680 DOI: 10.1021/am506283g] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A multifunctional bis-branched [1]rotaxane containing a perylene bisimide (PBI) core and two identical bistable[1]rotaxane arms terminated with ferrocene units was prepared and characterized by (1)H NMR, (13)C NMR, and 2D ROESY NMR spectroscopies and by HR-ESI spectrometry. The system is shown to possess several key features: (1) In acetone solution, external acid-base stimuli can result in relative mechanical movements of its ring and thread, which can induce extension and contraction movements of the whole system accompanied by a rotational movement of the ferrocene units, thus realizing dual-mode molecular motions, and the optimized conformations at different states are obtained through molecular dynamics simulations employing the general Amber force field. (2) The introduction of PBI enables the system fluorescence encoding through distance-dependent photoinduced electron transfer process from the ferrocene units to the PBI fluorophore. (3) The addition of Zn(2+) can increase the degree of aggregation of the system, while adding base hinders aggregation because of the movement of the macrocycle. The tunable aggregated nanostructural morphologies of [1]rotaxane were examined by scanning electron microscopy. These results can pave the way to achieve precise control of integrated and coupling nanomechanical motions at a single-molecule level and provide more insight into controlling the aggregate behavior of switchable mechanically interlocked molecules.
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Affiliation(s)
- Hong Li
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology , Shanghai 200237, People's Republic of China
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75
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Redox behaviour of some asymmetrically substituted viologens and an alkyl bridged bis-viologen in non-aqueous solvents: a voltammetric and spectroscopic investigation. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2629-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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76
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Doistau B, Tron A, Denisov SA, Jonusauskas G, McClenaghan ND, Gontard G, Marvaud V, Hasenknopf B, Vives G. Terpy(Pt-salphen)2 switchable luminescent molecular tweezers. Chemistry 2014; 20:15799-807. [PMID: 25286882 DOI: 10.1002/chem.201404064] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Indexed: 11/10/2022]
Abstract
The design and synthesis of switchable molecular tweezers based on a luminescent terpy(Pt-salphen)2 (1; terpy=terpyridine) complex is reported. Upon metal coordination, the tweezers can switch from an open "W"-shaped conformation to a closed "U"-shaped form that is adapted for selective recognition of cations. Closing of the tweezers by metal coordination (M=Zn(2+), Cu(2+), Pb(2+), Fe(2+), Hg(2+)) was monitored by (1)H NMR and/or UV/Vis titrations. During the titration, exclusive formation of the 1:1 complex [M(1)] was observed, without appearance of an intermediate 1:2 complex [M(1)2]. The crystallographic structure of the 1:1 complex was obtained with Pb(2+) and showed a distorted helical structure. Selective intercalation of Hg(2+) cations by the closed "U" form was observed. The tweezers were reopened by selective metal decoordination of the terpyridine ligand by using tris(2-aminoethyl)amine (tren) as a competitive ligand without modification of the Pt-salphen complex. Detailed photophysical studies were performed on the open and closed tweezers. Structured emission was observed in the open form from the Pt-salphen moieties, with a high quantum yield and a long lifetime. The emission is slightly modified upon closing with 1 equivalent of Zn(2+) or Hg(2+), whereas a dramatic quenching was obtained upon intercalation of additional Hg(2+).
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Affiliation(s)
- Benjamin Doistau
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris (France), Fax: (+33) 1-44-27-38-41; CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris (France)
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77
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Wang WY, Ma NN, Sun SL, Qiu YQ. Redox control of ferrocene-based complexes with systematically extended π-conjugated connectors: switchable and tailorable second order nonlinear optics. Phys Chem Chem Phys 2014; 16:4900-10. [PMID: 24472893 DOI: 10.1039/c3cp54468k] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The studies of geometrical structures, thermal stabilities, redox properties, nonlinear responses and optoelectronic properties have been carried out on a series of novel ferrocenyl (Fc) chromophores with the view of assessing their switchable and tailorable second order nonlinear optics (NLO). The use of a constant Fc donor and a 4,4'-bipyridinium acceptor and varied conjugated bridges makes it possible to systematically determine the contribution of organic connectors to chromophore nonlinear optical activities. The structures reveal that both the reduction reactions and organic connectors have a significant influence on 4,4'-bipyridinium. The potential energy surface maps along with plots of reduced density gradient mirror the thermal stabilities of the Fc-based chromophores. The first and second reductions take place preferentially at the 4,4'-bipyridinium moieties. Significantly, the reduction processes result in the molecular switches with large NLO contrast varying from zero or very small to a large value. Moreover, time-dependent density functional theory results indicate that the absorption peaks are mainly attributed to Fc to 4,4'-bipyridinium charge transfer and the mixture of intramolecular charge transfer within the two respective 4,4'-bipyridinium moieties coupled with interlayer charge transfer between the two 4,4'-bipyridinium moieties. This provides us with comprehensive information on the effect of organic connectors on the NLO properties.
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Affiliation(s)
- Wen-Yong Wang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People's Republic of China.
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78
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Li H, Li X, Ågren H, Qu DH. Two switchable star-shaped [1](n)rotaxanes with different multibranched cores. Org Lett 2014; 16:4940-3. [PMID: 25208234 DOI: 10.1021/ol502466x] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Two novel star-shaped [1](n)rotaxanes with three and four identical [1]rotaxane arms but different multibranched cores were designed, synthesized, and well-characterized. In the two systems, external base-acid stimuli result in the uniform relative mechanical movement of the macrocyclic rings and threads of their [1]rotaxane arms. The energy-minimized structures of the two rotaxanes in different states were obtained using molecular dynamics simulations in acetone solution, suggesting the construction of more sophisticated molecular machines mimicking the extension and contraction motions.
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Affiliation(s)
- Hong Li
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology , Shanghai 200237, P. R. China
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79
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Zhang DW, Tian J, Chen L, Zhang L, Li ZT. Dimerization of Conjugated Radical Cations: An Emerging Non-Covalent Interaction for Self-Assembly. Chem Asian J 2014; 10:56-68. [DOI: 10.1002/asia.201402805] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Indexed: 11/12/2022]
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80
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Li H, Li X, Wu Y, Agren H, Qu DH. A musclelike [2](2)rotaxane: synthesis, performance, and molecular dynamics simulations. J Org Chem 2014; 79:6996-7004. [PMID: 25028771 DOI: 10.1021/jo501127h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A novel bistable symmetric [2](2)rotaxane was prepared by a threading-followed-by-stoppering strategy and characterized with (1)H, (13)C, and 2D ROESY NMR spectroscopy and HR-ESI spectrometry. The symmetric [2](2)rotaxane system consists of an anthracene-based bis(crown ether) as macrocycles, and each of the two dibenzo[24]crown-8 (DB24C8) rings is threaded by the pendant substituents of a symmetrically substituted central rotatable ferrocene subunit that possesses two distinguishable recognition sites for the DB24C8 ring: namely, a dibenzylammonium site and an N-methyltriazolium site. The uniform shuttling motion of the thread relative to the two DB24C8 rings in [2](2)rotaxane can be driven by external acid-base stimuli, which was evidenced by (1)H and 2D ROESY NMR spectroscopy. Furthermore, molecular dynamics simulations of the [2](2)rotaxane were carried out both in protonated (stretched) and in neutral (contracted) forms. The calculated percentage change in molecular length of the [2](2)rotaxane between the two end-capping bis(methoxyl)phenyl groups is about 48% in the two different states (in acetone), which is much larger than the percentage change (∼27%) in human muscle. Moreover, in the two states, the C*-Cp-Cp-C* dihedral angles are computed as -177° in the stretched state and -112° in the contracted state, indicating a correlation between the translational and rotational motions of the [2](2)rotaxane.
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Affiliation(s)
- Hong Li
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology , Shanghai 200237, People's Republic of China
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81
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Kahlfuss C, Métay E, Duclos MC, Lemaire M, Oltean M, Milet A, Saint-Aman É, Bucher C. Reversible dimerization of viologen radicals covalently linked to a calixarene platform: Experimental and theoretical aspects. CR CHIM 2014. [DOI: 10.1016/j.crci.2014.01.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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82
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Niess F, Duplan V, Sauvage JP. Interconversion between a Vertically Oriented Transition Metal-Complexed Figure-of-Eight and a Horizontally Disposed One. J Am Chem Soc 2014; 136:5876-9. [DOI: 10.1021/ja501765y] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frédéric Niess
- Institut de Science et d’Ingénierie Supramoléculaires
(ISIS), Université de Strasbourg et CNRS, 8 allée
Gaspard Monge, 67000 Strasbourg, France
| | - Vincent Duplan
- Institut de Science et d’Ingénierie Supramoléculaires
(ISIS), Université de Strasbourg et CNRS, 8 allée
Gaspard Monge, 67000 Strasbourg, France
| | - Jean-Pierre Sauvage
- Institut de Science et d’Ingénierie Supramoléculaires
(ISIS), Université de Strasbourg et CNRS, 8 allée
Gaspard Monge, 67000 Strasbourg, France
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83
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Huo Z, Gisselbrecht JP, Farha R, Goldmann M, Saint-Aman E, Bucher C, Ruhlmann L. Alternating electro-copolymerization of zinc-β-octaethylporphyrin with a flexible bipyridinium. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.10.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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84
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Brahma S, Ikbal SA, Dhamija A, Rath SP. Highly Enhanced Bisignate Circular Dichroism of Ferrocene-Bridged Zn(II) Bisporphyrin Tweezer with Extended Chiral Substrates due to Well-Matched Host–Guest System. Inorg Chem 2014; 53:2381-95. [DOI: 10.1021/ic401395d] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sanfaori Brahma
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Sk Asif Ikbal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
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85
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Zhou W, Wu Y, Zhai BQ, Wang QC, Qu DH. An anthracene-containing bistable [2]rotaxane featuring color and fluorescence changes. RSC Adv 2014. [DOI: 10.1039/c3ra46517a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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86
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Scottwell SØ, Shaffer KJ, McAdam CJ, Crowley JD. 5-Ferrocenyl-2,2′-bipyridine ligands: synthesis, palladium(ii) and copper(i) complexes, optical and electrochemical properties. RSC Adv 2014. [DOI: 10.1039/c4ra05333h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two 5-ferrocenyl-2,2′-bipyridine ligands were synthesised using the palladium(0) catalysed Suzuki–Miyaura cross-coupling reaction. Palladium(ii) and copper(i) complexes of these ligands were synthesised and the optical and electrochemical properties of the complexes were compared to those of the “free” ligands.
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Affiliation(s)
- S. Ø. Scottwell
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
| | - K. J. Shaffer
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
| | - C. J. McAdam
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
| | - J. D. Crowley
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
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87
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Zhang L, Zhou TY, Tian J, Wang H, Zhang DW, Zhao X, Liu Y, Li ZT. A two-dimensional single-layer supramolecular organic framework that is driven by viologen radical cation dimerization and further promoted by cucurbit[8]uril. Polym Chem 2014. [DOI: 10.1039/c4py00139g] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Without or with the assistance of CB[8], a triangular radical monomer can self-assemble into 2D supramolecular organic frameworks in water.
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Affiliation(s)
- Liang Zhang
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Tian-You Zhou
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Jia Tian
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Hui Wang
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Dan-Wei Zhang
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Xin Zhao
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Yi Liu
- The Molecular Foundry
- Lawrence Berkeley National Laboratory
- Berkeley, USA
| | - Zhan-Ting Li
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
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88
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Kageyama T, Uneme S, Takase M, Nomura K, Nishinaga T. Diradical Character of Benzo- and Naphtho-Annelated Thiophene–Pyrrole Mixed Oligomer Dications. Aust J Chem 2014. [DOI: 10.1071/ch13522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Benzo- and naphtho-annelated thiophene–pyrrole mixed octamers Bz8TP-Cm and Np8TP-Cm, comprising benzo- or naphthodithiophene and two dithienylpyrrole units, were synthesised. Density functional theory (DFT) calculations based on B3LYP/6–31G(d) with the broken symmetry method predicted that dications Bz8TP-C12+ and Np8TP-C12+ have stronger diradical character than previously investigated non-annelated thiophene–pyrrole mixed octamer 8TP-C12+ (R1 = R2 = H). Compounds Bz8TP-C8 and Np8TP-C8 showed a one-step, two-electron oxidation process based on cyclic voltammetry analysis. Reaction with SbCl5 involved a two-electron oxidation. Bz8TP-C82+ and Np8TP-C82+ displayed similar absorption spectra to that of nonamer 9TP-C122+ (R1 = R2 = H), rather than that of octamer 8TP-C122+, indicating the stronger diradical characters of octamers Bz8TP-C82+ and Np8TP-C82+, as enhanced by benzo- and naphtho-annelation, and were comparable with that of 9TP-C122+. Time-dependent-DFT calculations supported the conclusion obtained from the experimental results.
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89
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Plamper FA. Changing Polymer Solvation by Electrochemical Means: Basics and Applications. POROUS CARBONS – HYPERBRANCHED POLYMERS – POLYMER SOLVATION 2014. [DOI: 10.1007/12_2014_284] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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90
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Leconte N, Ciccione J, Gellon G, Philouze C, Thomas F. Unprecedented redox-driven ligand ejection in nickel(ii)–diiminosemiquinonate radical complexes. Chem Commun (Camb) 2014; 50:1918-20. [DOI: 10.1039/c3cc48549h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One polydentate diiminosemiquinonate ligand is ejected upon electrochemical oxidation. The Ni(ii) ion remains square planar throughout the process, the ligand alone supporting all the redox events.
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Affiliation(s)
- N. Leconte
- Département de Chimie Moléculaire - Chimie Inorganique Redox (CIRE) - UMR CNRS 5250
- Université Joseph Fourier
- 38041 Grenoble cedex 9, France
| | - J. Ciccione
- Département de Chimie Moléculaire - Chimie Inorganique Redox (CIRE) - UMR CNRS 5250
- Université Joseph Fourier
- 38041 Grenoble cedex 9, France
| | - G. Gellon
- Département de Chimie Moléculaire - Chimie Inorganique Redox (CIRE) - UMR CNRS 5250
- Université Joseph Fourier
- 38041 Grenoble cedex 9, France
| | - C. Philouze
- Département de Chimie Moléculaire - Chimie Inorganique Redox (CIRE) - UMR CNRS 5250
- Université Joseph Fourier
- 38041 Grenoble cedex 9, France
| | - F. Thomas
- Département de Chimie Moléculaire - Chimie Inorganique Redox (CIRE) - UMR CNRS 5250
- Université Joseph Fourier
- 38041 Grenoble cedex 9, France
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91
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Zhou C, Tian J, Wang JL, Zhang DW, Zhao X, Liu Y, Li ZT. A three-dimensional cross-linking supramolecular polymer stabilized by the cooperative dimerization of the viologen radical cation. Polym Chem 2014. [DOI: 10.1039/c3py01006f] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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92
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Nishinaga T, Kageyama T, Koizumi M, Ando K, Takase M, Iyoda M. Effect of Substituents on the Structure, Stability, and π-Dimerization of Dithienylpyrrole Radical Cations. J Org Chem 2013; 78:9205-13. [DOI: 10.1021/jo401453s] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Tohru Nishinaga
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Takuya Kageyama
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Masahide Koizumi
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Kyoko Ando
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Masayoshi Takase
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Masahiko Iyoda
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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93
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Takai A, Yasuda T, Ishizuka T, Kojima T, Takeuchi M. A Directly Linked Ferrocene-Naphthalenediimide Conjugate: Precise Control of Stacking Structures of π-Systems by Redox Stimuli. Angew Chem Int Ed Engl 2013; 52:9167-71. [DOI: 10.1002/anie.201302587] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/02/2013] [Indexed: 01/05/2023]
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94
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Takai A, Yasuda T, Ishizuka T, Kojima T, Takeuchi M. A Directly Linked Ferrocene–Naphthalenediimide Conjugate: Precise Control of Stacking Structures of π‐Systems by Redox Stimuli. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302587] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Atsuro Takai
- Organic Materials Group, National Institute for Materials Science (NIMS), 1‐2‐1 Sengen, Tsukuba, Ibaraki 305‐0047 (Japan) http://www.nims.go.jp/macromol/english/
| | - Takeshi Yasuda
- Organic Thin‐Film Solar Cells Group, National Institute for Materials Science (NIMS), 1‐2‐1 Sengen, Tsukuba, Ibaraki 305‐0047 (Japan)
| | - Tomoya Ishizuka
- Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennoudai, Tsukuba, Ibaraki 305‐8571 (Japan)
| | - Takahiko Kojima
- Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennoudai, Tsukuba, Ibaraki 305‐8571 (Japan)
| | - Masayuki Takeuchi
- Organic Materials Group, National Institute for Materials Science (NIMS), 1‐2‐1 Sengen, Tsukuba, Ibaraki 305‐0047 (Japan) http://www.nims.go.jp/macromol/english/
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95
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Tateno M, Takase M, Iyoda M, Komatsu K, Nishinaga T. Steric control in the π-dimerization of oligothiophene radical cations annelated with bicyclo[2.2.2]octene units. Chemistry 2013; 19:5457-67. [PMID: 23450728 DOI: 10.1002/chem.201204332] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Indexed: 11/08/2022]
Abstract
A Two series of oligothiophenes 2(nT) (n=4,5), annelated with bicyclo[2.2.2]octene (BCO) units at both ends, and quaterthiophenes 3 a-c, annelated with various numbers of BCO units at different positions, were newly synthesized to investigate the driving forces of π-dimerization and the structure-property relationships of the π-dimers of oligothiophene radical cations. Their radical-cation salts were prepared through chemical one-electron oxidation by using nitrosonium hexafluoroantimonate. From variable-temperature electron spin resonance and electronic absorption measurements, the π-dimerization capability was found to vary among the members of the 2(nT)(+)(·)SbF6(-) series and 3(+)(·)SbF6(-) series of compounds. To examine these results, density functional theory (DFT) calculations at the M06-2X/6-31G(d) level were conducted for the π-dimers. This level of theory was found to successfully reproduce the previously reported X-ray structure of (2(3T))2(2+) having a bent π-dimer structure with cis-cis conformations. The absorption bands obtained by time-dependent DFT calculations for the π-dimers were in reasonable agreement with the experimental spectra. The attractive and repulsive forces for the π-dimerization were divided into four factors: 1) SOMO-SOMO interactions, 2) van der Waals forces, 3) solvation, and 4) Coulomb repulsion, and the effects of each factor on the structural differences and chain-length dependence are discussed in detail.
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Affiliation(s)
- Masaki Tateno
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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96
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Iehl J, Frasconi M, Jacquot de Rouville HP, Renaud N, Dyar SM, Strutt NL, Carmieli R, Wasielewski MR, Ratner MA, Nierengarten JF, Stoddart JF. π-Dimerization of viologen subunits around the core of C60 from twelve to six directions. Chem Sci 2013. [DOI: 10.1039/c3sc22250k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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97
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Iordache A, Kannappan R, Métay E, Duclos MC, Pellet-Rostaing S, Lemaire M, Milet A, Saint-Aman E, Bucher C. Redox control of molecular motions in bipyridinium appended calixarenes. Org Biomol Chem 2013; 11:4383-9. [DOI: 10.1039/c3ob40356d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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98
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Zigon N, Guenet A, Graf E, Hosseini MW. A platinum based organometallic turnstile. Chem Commun (Camb) 2013; 49:3637-9. [DOI: 10.1039/c3cc41040d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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99
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Shibata M, Tanaka S, Ikeda T, Shinkai S, Kaneko K, Ogi S, Takeuchi M. Stimuli-Responsive Folding and Unfolding of a Polymer Bearing Multiple Cerium(IV) Bis(porphyrinate) Joints: Mechano-imitation of the Action of a Folding Ruler. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205584] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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100
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Shibata M, Tanaka S, Ikeda T, Shinkai S, Kaneko K, Ogi S, Takeuchi M. Stimuli-responsive folding and unfolding of a polymer bearing multiple cerium(IV) bis(porphyrinate) joints: mechano-imitation of the action of a folding ruler. Angew Chem Int Ed Engl 2012; 52:397-400. [PMID: 23161788 DOI: 10.1002/anie.201205584] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Revised: 09/10/2012] [Indexed: 11/11/2022]
Abstract
A pivotal guest role: a new porphyrin polymer, poly(PorZn⋅DD) (pink/purple), composed of a porphyrinatozinc and a porphyrin double-decker complex as a repeating unit was synthesized. In poly(PorZn⋅DD), porphyrinatozinc complexes recognize a divalent amine (tan/red) to induce an intramolecular pivoting motion through the rotation of porphyrin double-decker complexes and the polymer undergoes shortening and compaction.
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Affiliation(s)
- Masayuki Shibata
- Department of Chemistry and Biochemistry, Kyushu University, Japan
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