151
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Albrecht M, Isaak E, Moha V, Raabe G, Fröhlich R. Stereocontrol in dinuclear triple lithium-bridged titanium(IV) complexes: solving some stereochemical mysteries. Chemistry 2014; 20:6650-8. [PMID: 24782405 DOI: 10.1002/chem.201402370] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Indexed: 11/07/2022]
Abstract
Compounds 1 a-f-H2 form "monomeric" triscatecholate titanium(IV) complexes [Ti(1 a-f)3](2-), which in the presence of Li cations are in equilibrium with the triple lithium-bridged "dimers" [Li3(Ti(1 a-f)3)2](-). The equilibrium strongly depends on the donor ability of the solvent. Usually, in solvents with high donor ability, the stereochemically labile monomer is preferred, whereas in nondonor solvents, the dimer is the major species. In the latter, the stereochemistry at the complex units is "locked". The configuration at the titanium(IV) triscatecholates is influenced by addition of chiral ammonium countercations. In this case, the induced stereochemical information at the monomer is transferred to the dimer. Alternatively, the configuration at the metal complexes can be controlled by enantiomerically pure ester side chains. Due to the different orientation of the ester groups in the monomer or dimer, opposite configurations of the triscatecholates were observed by circular dichroism (CD) spectroscopy for [Ti(1 c-e)3](2-) or [Li3(Ti(1 c-e)3)2](-). A surprising exception was found for the dimer [Li3(Ti(1 f)3)2](-). Herein, the dimer is the dominating species in weak donor (methanol), as well as strong donor (DMSO), solvents. This is due to the bulkiness of the ester substituent destabilizing the monomer. Due to the size of the substituent in [Li3(Ti(1 f)3)2](-) the esters have to adopt an unusual conformation in the dimer resulting in a stereocontrol of the small methyl group. Following this, opposite stereocontrol mechanisms were observed for the central metal-complex units of [Li3(Ti(1 c-e)3)2](-) or [Li3(Ti(1 f)3)2](-).
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Affiliation(s)
- Markus Albrecht
- Institut für Organische Chemie, RWTH Aachen, Landoltweg 1, 52074 Aachen (Germany).
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152
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Ściebura J, Janiak A, Stasiowska A, Grajewski J, Gawrońska K, Rychlewska U, Gawroński J. Intramolecular interactions of trityl groups. Chemphyschem 2014; 15:1653-9. [PMID: 24692363 DOI: 10.1002/cphc.201301204] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 02/26/2014] [Indexed: 11/11/2022]
Abstract
Trityl group, Tr, is a molecular dynamic rotor of which the conformation and helicity depend on other groups in the close vicinity. Interactions with another covalently linked Tr group and with other substituents are analyzed in terms of transfer of chirality to the trityl group. Two trityl groups in a molecule can mutually interact at a distance of two, three, or five bonds. Despite its size, a Tr group attached to a cyclohexane or cyclopentane ring through an oxygen or nitrogen atom adopts either an axial or equatorial position, depending on additional stabilizing interactions, such as hydrogen bonding.
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Affiliation(s)
- Jacek Ściebura
- Department of Chemistry, Adam Mickiewicz University, 60-780 Poznan (Poland), Fax: (+48) 61829-1555
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153
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Nikitin K, Müller-Bunz H, Muldoon J. Evaluation of weak interactions in [2]pseudorotaxanes. Chemphyschem 2014; 15:139-50. [PMID: 24399801 DOI: 10.1002/cphc.201300871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Indexed: 11/09/2022]
Abstract
Viologens readily thread bis-p-phenylene crown ethers to form [2]pseudorotaxanes. However, the binding of sterically hindered 3,3'-dimethylviologens is very weak. Density functional theory (DFT) calculations indicated that the additional energy cost of "flattening" is substantial, 55 kJ mol(-1), and prevents the formation of a stable host-guest complex. The structures of [2]pseudorotaxanes determined by X-ray crystallography are in good agreement with the NMR characterisation and DFT results. Their association constants and thermodynamic parameters in solution were measured by using a dilution method and, for the first time, by host-guest nuclear Overhauser effect (NOE) correlations. The NOE approach was subsequently applied to study the sterically hindered analogues and it was shown that the binding in 3,3'-dimethyl-N,N-dibenzyl [2]pseudorotaxane is by 8.5 kJ mol(-1) weaker than in its regular analogue. The proposed technique helps to quantify weak interactions in [2]pseudorotaxanes and can be applied to other host-guest complexes.
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Affiliation(s)
- Kirill Nikitin
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4 (Ireland), Fax: (+353) 01 7162127.
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154
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Mondal PC, Singh V, Shankar B. Fe-terpyridyl complex based multiple switches for application in molecular logic gates and circuits. NEW J CHEM 2014. [DOI: 10.1039/c4nj00121d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The Fe(ii)-terpyridyl binary complex is used as a molecular switch upon external chemical stimuli. The stability of different switching states, their reversibility upon further chemical stimulus, prompted construction of solution based molecular logic gates and circuits.
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Affiliation(s)
- Prakash Chandra Mondal
- Department of Chemistry
- University of Delhi
- Delhi-110007, India
- Department of Chemical Physics
- Weizmann Institute of Science
| | - Vikram Singh
- Department of Chemistry
- University of Delhi
- Delhi-110007, India
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155
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Lehr J, Lang T, Blackburn OA, Barendt TA, Faulkner S, Davis JJ, Beer PD. Anion sensing by solution- and surface-assembled osmium(II) bipyridyl rotaxanes. Chemistry 2013; 19:15898-906. [PMID: 24127251 PMCID: PMC4517173 DOI: 10.1002/chem.201302886] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Indexed: 01/21/2023]
Abstract
We report the preparation of [2]rotaxanes containing an electrochemically and optically active osmium(II) bipyridyl macrocyclic component mechanically bonded with cationic pyridinium axles. Such interlocked host systems are demonstrated to recognise and sense anionic guest species as shown by (1)H NMR, luminescence and electrochemical studies. The rotaxanes can be surface assembled on to gold electrodes through anion templation under click copper(I)-catalysed Huisgen cycloaddition conditions to form rotaxane molecular films, which, after template removal, respond electrochemically and selectively to chloride.
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Affiliation(s)
- Joshua Lehr
- Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ (UK)
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156
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Mistri T, Alam R, Dolai M, Kumar Mandal S, Guha P, Rahman Khuda-Bukhsh A, Ali M. Rhodamine-Based Chromo-/Fluorogenic Dual Signalling Probe for Selective Recognition of HgII
with Potential Applications for INHIBIT Logic Devices and Cell-Imaging Studies. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300809] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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157
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Gavette JV, Mills NS, Zakharov LN, Johnson CA, Johnson DW, Haley MM. An Anion-Modulated Three-Way Supramolecular Switch that Selectively Binds Dihydrogen Phosphate, H2PO4−. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302929] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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158
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Gavette JV, Mills NS, Zakharov LN, Johnson CA, Johnson DW, Haley MM. An anion-modulated three-way supramolecular switch that selectively binds dihydrogen phosphate, H2PO4-. Angew Chem Int Ed Engl 2013; 52:10270-4. [PMID: 23934912 DOI: 10.1002/anie.201302929] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/29/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Jesse V Gavette
- Department of Chemistry and Biochemistry & Materials Science Institute, University of Oregon, Eugene, OR 97403-1253 (USA)
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159
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Yamamoto S, Iida H, Yashima E. Guest-Induced Unidirectional Dual Rotary and Twisting Motions of a Spiroborate-Based Double-Stranded Helicate Containing a Bisporphyrin Unit. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302560] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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160
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Guest-Induced Unidirectional Dual Rotary and Twisting Motions of a Spiroborate-Based Double-Stranded Helicate Containing a Bisporphyrin Unit. Angew Chem Int Ed Engl 2013; 52:6849-53. [DOI: 10.1002/anie.201302560] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Indexed: 11/07/2022]
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161
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Sawaki T, Ishizuka T, Kawano M, Shiota Y, Yoshizawa K, Kojima T. Complete photochromic structural changes in ruthenium(II)-diimine complexes, based on control of the excited states by metalation. Chemistry 2013; 19:8978-90. [PMID: 23681489 DOI: 10.1002/chem.201300437] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 03/28/2013] [Indexed: 11/08/2022]
Abstract
The thermal and photochemical reactions of a newly synthesized complex, [Ru(II)(TPA)(tpphz)](2+) (1; TPA=tris(2-pyridylmethyl)amine, tpphz=tetrapyrido[3,2-a:2',3'-c:3'',2''-h: 2''',3'''-j]phenazine), and its derivatives have been investigated. Heating a solution of complex 1 (closed form) and its derivatives in MeCN caused the partial dissociation of one pyridylmethyl moiety of the TPA ligand and the resulting vacant site on the Ru(II) center was occupied by a molecule of MeCN from the solvent to give a dissociated complex, [Ru(II)(η(3)-TPA)(tpphz)(MeCN)](2+) (1', open form), and its derivatives, respectively, in quantitative yields. The thermal dissociation reactions were investigated on the basis of kinetics analysis, which indicated that the reactions proceeded through a seven-coordinate transition state. Although the backwards reaction was induced by photoirradiation of the MLCT absorption bands, the photoreaction of complex 1' reached a photostationary state between complexes 1 and 1' and, hence, the recovery of complex 1 from complex 1' was 67%. Upon protonation of complex 1 at the vacant site of the tpphz ligand, the efficiency of the photoinduced recovery of complex 1+H(+) from complex 1'+H(+) improved to 83%. In contrast, dinuclear μ-tpphz complexes 2 and 3, which contained the Ru(II)(TPA)(tpphz) unit and either a Ru(II)(bpy)2 or Pd(II)Cl2 moiety on the other coordination edge of the tpphz ligand, exhibited 100% photoconversion from their open forms into their closed forms (2'→2 and 3'→3). These results are the first examples of the complete photochromic structural change of a transition-metal complex, as represented by complete interconversion between its open and closed forms. Scrutinization by performing optical and electrochemical measurements allowed us to propose a rationale for how metal coordination at the vacant site of the tpphz ligand improves the efficiency of photoconversion from the open form into the closed form. It is essential to lower the energy level of the triplet metal-to-ligand charge-transfer excited state ((3)MLCT*) of the closed form relative to that of the triplet metal-centered excited state ((3)MC*) by metal coordination. This energy-level manipulation hinders the transition from the (3)MLCT* state into the (3)MC* state in the closed form to block the partial photodissociation of the TPA ligand.
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Affiliation(s)
- Takuya Sawaki
- Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
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162
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Coumans RGE, Elemans JAAW, Rowan AE, Nolte RJM. Interlocked Porphyrin Switches. Chemistry 2013; 19:7758-70. [DOI: 10.1002/chem.201203983] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 04/03/2013] [Indexed: 11/12/2022]
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163
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Domínguez C, Heinrich B, Donnio B, Coco S, Espinet P. Room-Temperature Columnar Mesophases in Triazine-Gold Thiolate Metal-Organic Supramolecular Aggregates. Chemistry 2013; 19:5988-95. [DOI: 10.1002/chem.201204256] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 12/30/2012] [Indexed: 11/11/2022]
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164
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165
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Lehn JM. Perspectives in Chemistry-Steps towards Complex Matter. Angew Chem Int Ed Engl 2013; 52:2836-50. [DOI: 10.1002/anie.201208397] [Citation(s) in RCA: 474] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Indexed: 12/16/2022]
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166
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Feng K, Yu ML, Wang SM, Wang GX, Tung CH, Wu LZ. Photoinduced Triplet-Triplet Energy Transfer in a 2-Ureido-4(1H)-Pyrimidinone-Bridged, Quadruply Hydrogen-Bonded Ferrocene-Fullerene Assembly. Chemphyschem 2012. [DOI: 10.1002/cphc.201200818] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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167
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Chang HC, Kiriya D. Synchronic Transformations of Molecular States and Macroscopic Phases in Valence-Tautomeric Complexes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201087] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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168
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Kumagai N, Shibasaki M. Asymmetrische Katalyse mit Bis(hydroxyphenyl)diamid/Seltenerdmetall-Komplexen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206582] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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169
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Asymmetric Catalysis with Bis(hydroxyphenyl)diamides/Rare-Earth Metal Complexes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201206582] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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170
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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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171
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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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172
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Chuang CJ, Lai CC, Liu YH, Peng SM, Chiu SH. A Two-Stage Molecular Retractable Cable Featuring Push-Button and Rotary Two-Way Switching Modes. Chemistry 2012; 18:16698-707. [DOI: 10.1002/chem.201202820] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 09/25/2012] [Indexed: 11/06/2022]
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173
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Gao C, Silvi S, Ma X, Tian H, Credi A, Venturi M. Chiral Supramolecular Switches Based on (R)-Binaphthalene-Bipyridinium Guests and Cucurbituril Hosts. Chemistry 2012; 18:16911-21. [DOI: 10.1002/chem.201202378] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 09/03/2012] [Indexed: 01/23/2023]
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174
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Früh SM, Steuerwald D, Simon U, Vogel V. Covalent cargo loading to molecular shuttles via copper-free "click chemistry". Biomacromolecules 2012; 13:3908-11. [PMID: 23106538 DOI: 10.1021/bm301437c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An important prerequisite for molecular shuttle-based functional devices is the development of adequate linker chemistries to load and transport versatile cargoes. Copper-free "click chemistry" has not been applied before to covalently load cargo onto molecular shuttles propelled by biological motors such as kinesin. Due to the high biocompatibility and bioorthogonality of the strain-promoted azide-alkyne cycloaddition, this approach has pronounced advantages compared to previous methods.
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Affiliation(s)
- Susanna M Früh
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland
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175
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Sugino H, Kawai H, Umehara T, Fujiwara K, Suzuki T. Effects of Axle-Core, Macrocycle, and Side-Station Structures on the Threading and Hydrolysis Processes of Imine-Bridged Rotaxanes. Chemistry 2012; 18:13722-32. [DOI: 10.1002/chem.201200837] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 06/06/2012] [Indexed: 02/02/2023]
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176
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Cantin K, Lafleur-Lambert A, Dufour P, Morin JF. Studies Toward the Synthesis of Phenylacetylene Macrocycle Based Rotaxane Precursors as Building Blocks for Organic Nanotubes. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200655] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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177
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Ackermann D, Jester SS, Famulok M. Konstruktionsprinzip für DNA-Rotaxane mit mechanisch versteifter PX100-Achse. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202816] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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178
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Moriuchi T, Morimoto K, Sakamoto Y, Hirao T. Molecular Structures of Dipeptide–Palladium(II) Conjugated Complexes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Toshiyuki Moriuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada‐oka, Suita, Osaka 565‐0871, Japan, Fax: +81‐6‐6879‐7415
| | - Kunihiro Morimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada‐oka, Suita, Osaka 565‐0871, Japan, Fax: +81‐6‐6879‐7415
| | - Yuki Sakamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada‐oka, Suita, Osaka 565‐0871, Japan, Fax: +81‐6‐6879‐7415
| | - Toshikazu Hirao
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada‐oka, Suita, Osaka 565‐0871, Japan, Fax: +81‐6‐6879‐7415
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179
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Ackermann D, Jester SS, Famulok M. Design strategy for DNA rotaxanes with a mechanically reinforced PX100 axle. Angew Chem Int Ed Engl 2012; 51:6771-5. [PMID: 22653874 DOI: 10.1002/anie.201202816] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Indexed: 12/24/2022]
Affiliation(s)
- Damian Ackermann
- Universität Bonn, LIMES Institut, Chemical Biology & Med. Chem. Unit c/o Kekulé-Institut für Organische Chemie und Biochemie, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany
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180
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Lang T, Graf E, Kyritsakas N, Hosseini MW. Strapped-Porphyrin-Based Molecular Turnstiles. Chemistry 2012; 18:10419-26. [DOI: 10.1002/chem.201200562] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Indexed: 11/07/2022]
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181
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Malinovskii VL, Nussbaumer AL, Häner R. Oligopyrenotides: chiral nanoscale templates for chromophore assembly. Angew Chem Int Ed Engl 2012; 51:4905-8. [PMID: 22492542 DOI: 10.1002/anie.201201352] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Indexed: 01/29/2023]
Abstract
Getting organized: DNA-like supramolecular polymers formed of short oligopyrenotides serve as a helical scaffold for the molecular assembly of ligands. The cationic porphyrin meso-tetrakis(1-methylpyridin-4-yl)porphyrin interacts with the helical polymers in a similar way as with poly(dA:dT).
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182
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Malinovskii VL, Nussbaumer AL, Häner R. Oligopyrenotides: Chiral Nanoscale Templates for Chromophore Assembly. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201352] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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183
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Ricci AM, Méndez De Leo LP, Williams FJ, Calvo EJ. Some Evidence for the Formation of an Azo Bond during the Electroreduction of Diazonium Salts on Au Substrates. Chemphyschem 2012; 13:2119-27. [DOI: 10.1002/cphc.201100882] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Indexed: 11/10/2022]
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184
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Dong S, Yan X, Zheng B, Chen J, Ding X, Yu Y, Xu D, Zhang M, Huang F. A Supramolecular Polymer Blend Containing Two Different Supramolecular Polymers through Self-Sorting Organization of Two Heteroditopic Monomers. Chemistry 2012; 18:4195-9. [DOI: 10.1002/chem.201200016] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Indexed: 11/07/2022]
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185
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Barin G, Coskun A, Fouda MMG, Stoddart JF. Mechanically Interlocked Molecules Assembled by π-π Recognition. Chempluschem 2012. [DOI: 10.1002/cplu.201100075] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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186
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Löw NL, Dzyuba EV, Brusilowskij B, Kaufmann L, Franzmann E, Maison W, Brandt E, Aicher D, Wiehe A, Schalley CA. Synthesis of multivalent host and guest molecules for the construction of multithreaded diamide pseudorotaxanes. Beilstein J Org Chem 2012; 8:234-245. [PMID: 22423290 PMCID: PMC3302084 DOI: 10.3762/bjoc.8.24] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Accepted: 01/23/2012] [Indexed: 02/02/2023] Open
Abstract
A series of di-, tri- and tetravalent axles and wheels for the synthesis of pseudorotaxanes bearing the tetralactam macrocycle/diamide axle binding motif was prepared. Starting from iodinated monovalent precursors, Sonogashira cross-coupling reactions were utilized to couple the binding sites to appropriate spacer groups. Through this "Lego" or "toolbox" approach, the convergent synthesis of host and guests with a well-defined number of the binding sites is possible. In addition, the spatial arrangement of the binding sites can be controlled through the quite rigid connections between linker and binding sites. Although a quantitative assessment of binding strengths was not possible by NMR titration experiments, typical and significant shifts of the signals of the diamide moiety indicate qualitatively the formation of pseudorotaxanes from the axle and wheel precursors.
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Affiliation(s)
- Nora L Löw
- Institut für Chemie und Biochemie der Freien Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Egor V Dzyuba
- Institut für Chemie und Biochemie der Freien Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Boris Brusilowskij
- Institut für Chemie und Biochemie der Freien Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Lena Kaufmann
- Institut für Chemie und Biochemie der Freien Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Elisa Franzmann
- Pharmazeutische und Medizinische Chemie, Universität Hamburg, Bundesstr. 45, 20146 Hamburg, Germany
| | - Wolfgang Maison
- Pharmazeutische und Medizinische Chemie, Universität Hamburg, Bundesstr. 45, 20146 Hamburg, Germany
| | - Emily Brandt
- Biolitec research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
- Charité – Universitätsmedizin, International Graduate Program Medical Neurosciences, Charitéplatz 1, 10117 Berlin, Germany
| | - Daniel Aicher
- Biolitec research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
- WITEGA Laboratorien Berlin-Adlershof GmbH, Magnusstr. 11, 12489 Berlin, Germany
| | - Arno Wiehe
- Institut für Chemie und Biochemie der Freien Universität Berlin, Takustr. 3, 14195 Berlin, Germany
- Biolitec research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie der Freien Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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187
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Kaufmann L, Dzyuba EV, Malberg F, Löw NL, Groschke M, Brusilowskij B, Huuskonen J, Rissanen K, Kirchner B, Schalley CA. Substituent effects on axle binding in amide pseudorotaxanes: comparison of NMR titration and ITC data with DFT calculations. Org Biomol Chem 2012; 10:5954-64. [DOI: 10.1039/c2ob25196e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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188
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Henne S, Bredenkötter B, Dehghan Baghi AA, Schmid R, Volkmer D. Advanced buckyball joints: synthesis, complex formation and computational simulations of centrohexaindane-extended tribenzotriquinacene receptors for C60 fullerene. Dalton Trans 2012; 41:5995-6002. [DOI: 10.1039/c2dt12435a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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189
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Gallina ME, Baytekin B, Schalley C, Ceroni P. Light-Harvesting in Multichromophoric Rotaxanes. Chemistry 2011; 18:1528-35. [DOI: 10.1002/chem.201102981] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Indexed: 11/09/2022]
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190
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Xie TZ, Guo C, Yu SY, Pan YJ. Fine-Tuning Conformational Motion of a Self-Assembled Metal-Organic Macrocycle by Multiple CH⋅⋅⋅Anion Hydrogen Bonds. Angew Chem Int Ed Engl 2011; 51:1177-81. [DOI: 10.1002/anie.201106504] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 10/19/2011] [Indexed: 11/07/2022]
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191
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Xie TZ, Guo C, Yu SY, Pan YJ. Fine-Tuning Conformational Motion of a Self-Assembled Metal-Organic Macrocycle by Multiple CH⋅⋅⋅Anion Hydrogen Bonds. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201106504] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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192
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Vajpayee V, Song YH, Cook TR, Kim H, Lee Y, Stang PJ, Chi KW. A unique non-catenane interlocked self-assembled supramolecular architecture and its photophysical properties. J Am Chem Soc 2011; 133:19646-9. [PMID: 22085308 PMCID: PMC3235908 DOI: 10.1021/ja208495u] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A novel, interlocked, self-assembled (M(2)L(2))(2) molecular architecture was constructed from an arene-Ru acceptor and a 1,4-di(pyridin-4-yl)buta-1,3-diyne donor. Two M(2)L(2) units, with cavities of ~7.21 Å, spontaneously interlock, with one unit encapsulating a twin in a non-catenane fashion. The dimeric host-guest complex thus formed is unique among two-dimensional self-assemblies and is stabilized by π-π interactions between the M(2)L(2) units.
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Affiliation(s)
- Vaishali Vajpayee
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea, Fax: (+) 82-52-259-2348
| | - Young Ho Song
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea, Fax: (+) 82-52-259-2348
| | - Timothy R. Cook
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, U.S.A
| | - Hyunuk Kim
- Department of Chemistry, POSTECH, Pohang, 690-784, Republic of Korea
| | - Youngil Lee
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea, Fax: (+) 82-52-259-2348
| | - Peter J. Stang
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, U.S.A
| | - Ki-Whan Chi
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea, Fax: (+) 82-52-259-2348
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193
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Arduini A, Bussolati R, Masseroni D, Royal G, Secchi A. Communication between Components in Metal-Directed Assemblies of Oriented Calix[6]arene-Based Pseudorotaxanes and Rotaxanes. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101597] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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194
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Ye Q, Takahashi K, Hoshino N, Kikuchi T, Akutagawa T, Noro SI, Takeda S, Nakamura T. Huge Dielectric Response and Molecular Motions in Paddle-Wheel [CuII2(Adamantylcarboxylate)4(DMF)2]⋅(DMF)2. Chemistry 2011; 17:14442-9. [DOI: 10.1002/chem.201101743] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 09/15/2011] [Indexed: 11/09/2022]
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195
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Lubbe AS, Ruangsupapichat N, Caroli G, Feringa BL. Control of rotor function in light-driven molecular motors. J Org Chem 2011; 76:8599-610. [PMID: 21928768 DOI: 10.1021/jo201583z] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A study is presented on the control of rotary motion of an appending rotor unit in a light-driven molecular motor. Two new light driven molecular motors were synthesized that contain aryl groups connected to the stereogenic centers. The aryl groups behave as bidirectional free rotors in three of the four isomers of the 360° rotation cycle, but rotation of the rotors is hindered in the fourth isomer. Kinetic studies of both motor and rotor functions of the two new compounds are given, using (1)H NMR, 2D-EXSY NMR, and UV-vis spectroscopy. In addition, we present the development of a new method for introducing a range of aryl substituents at the α-carbon of precursors for molecular motors. The present study shows how the molecular system can be photochemically switched between a state of free rotor rotation and a state of hindered rotation and reveals the dynamics of coupled rotary systems.
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Affiliation(s)
- Anouk S Lubbe
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands
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196
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Fatás P, Longo E, Rastrelli F, Crisma M, Toniolo C, Jiménez AI, Cativiela C, Moretto A. Bis(azobenzene)-based photoswitchable, prochiral, Cα-tetrasubstituted α-amino acids for nanomaterials applications. Chemistry 2011; 17:12606-11. [PMID: 21956889 DOI: 10.1002/chem.201102609] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Paola Fatás
- Department of Organic Chemistry, ISQCH, University of Zaragoza-CSIC, Zaragoza, Spain
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197
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198
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Zhang ZJ, Zhang HY, Wang H, Liu Y. A Twin-Axial Hetero[7]rotaxane. Angew Chem Int Ed Engl 2011; 50:10834-8. [DOI: 10.1002/anie.201105375] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Revised: 08/18/2011] [Indexed: 11/11/2022]
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199
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Ishiwari F, Fukasawa KI, Sato T, Nakazono K, Koyama Y, Takata T. A Rational Design for the Directed Helicity Change of Polyacetylene Using Dynamic Rotaxane Mobility by Means of Through-Space Chirality Transfer. Chemistry 2011; 17:12067-75. [DOI: 10.1002/chem.201101727] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Indexed: 11/09/2022]
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200
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Zhang KD, Zhao X, Wang GT, Liu Y, Zhang Y, Lu HJ, Jiang XK, Li ZT. Foldamer-Tuned Switching Kinetics and Metastability of [2]Rotaxanes. Angew Chem Int Ed Engl 2011; 50:9866-70. [DOI: 10.1002/anie.201104099] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Indexed: 11/09/2022]
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