1
|
Huang S, Li X, Cai Y, Feng W, Yuan L. Construction of Oligorotaxanes with Hydrogen-Bonded Aramide Macrocycles through Threaded Host-Guest Complexation. Chemistry 2023:e202303394. [PMID: 38116992 DOI: 10.1002/chem.202303394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/21/2023]
Abstract
The development of efficient and selective organic synthetic approaches for complex molecules has garnered significant attention due to the need for precise control over molecular structures and functions. Rotaxanes, a type of mechanically interlocked molecules (MIMs), have shown promising applications in various fields including sensing, catalysis, and material science. However, the highly selective synthesis of oligo[n]rotaxanes (mostly n≥3) through controlling host-guest complexation and supramolecular threading assembly process still remains an ongoing challenge. In particular, the utilization of two-dimensional (2D) macrocycles with structural shape-persistency for the synthesis of oligo[n]rotaxanes is rare. In this concept, research on cooperatively threaded host-guest complexation with hydrogen-bonded (H-bonded) aramide macrocycles and selective synthetic protocols of oligo[n]rotaxanes has been summarized. The high efficiency and selectivity in synthesis are ascribed to the synergistic interplay of multiple non-covalent bonding interactions such as hydrogen bonding and intermolecular π-π stacking of macrocycles within the unique supramolecular structure of threaded host-guest complexes. This review focuses on the latest progress in the concepts, synthesis, and properties of H-bonded aramide macrocycle-based oligorotaxanes, and presents an in-depth outlook on challenges in this emerging field.
Collapse
Affiliation(s)
- Song Huang
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
| | - Xiaowei Li
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
| | - Yimin Cai
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
| | - Wen Feng
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
| | - Lihua Yuan
- College of Chemistry, Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
| |
Collapse
|
2
|
Vogel J, Chen Y, Fadler RE, Flood AH, von Delius M. Steric Control over the Threading of Pyrophosphonates with One or Two Cyanostar Macrocycles during Pseudorotaxane Formation. Chemistry 2023; 29:e202300899. [PMID: 37156722 PMCID: PMC10655069 DOI: 10.1002/chem.202300899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/01/2023] [Accepted: 05/08/2023] [Indexed: 05/10/2023]
Abstract
The supramolecular recognition of anions is increasingly harnessed to achieve the self-assembly of supramolecular architectures, ranging from cages and polymers to (pseudo)rotaxanes. The cyanostar (CS) macrocycle has previously been shown to form 2 : 1 complexes with organophosphate anions that can be turned into [3]rotaxanes by stoppering. Here we achieved steric control over the assembly of pseudorotaxanes comprising the cyanostar macrocycle and a thread that is based, for the first time, on organo-pyrophosphonates. Subtle differences in steric bulk on the threads allowed formation of either [3]pseudorotaxanes or [2]pseudorotaxanes. We demonstrate that the threading kinetics are governed by the steric demand of the organo-pyrophosphonates and in one case, slows down to the timescale of minutes. Calculations show that the dianions are sterically offset inside the macrocycles. Our findings broaden the scope of cyanostar-anion assemblies and may have relevance for the design of molecular machines whose directionality is a result of relatively slow slipping.
Collapse
Affiliation(s)
- Julian Vogel
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Yusheng Chen
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Rachel E Fadler
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Amar H Flood
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Max von Delius
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| |
Collapse
|
3
|
Bej S, Nandi M, Ghosh P. Development of fluorophoric [2]pseudorotaxanes and [2]rotaxane: selective sensing of Zn(II). Org Biomol Chem 2022; 20:7284-7293. [PMID: 36052954 DOI: 10.1039/d2ob01210c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fluorophoric [2]pseudorotaxanes {NiPR1(ClO4)2-NiPR3(ClO4)2} are synthesized by utilizing newly designed fluorophoric bidentate ligands (L1-L3) and a heteroditopic naphthalene containing macrocycle (NaphMC) with high yields via Ni(II) templation and π-π stacking interactions. Subsequently, a fluorophoric [2]rotaxane (NAPRTX) is established through a Cu(I) catalysed click reaction between an azide terminated pseudorotaxane, {NiPR4(ClO4)2}, which contains the newly designed fluorophoric ligand L4, and alkyne terminated bulky stopper units. All these fluorophoric [2]pseudorotaxanes and the [2]rotaxane were characterized using numerous techniques such as mass spectrometry, NMR, UV/Vis, PL, and elemental analysis, wherever applicable. Furthermore, to investigate the effect of the fluorophoric moieties, the coordinating ability of chelating units, and size and shape of the three dimensional cavity generated by the mechanical bond in the interlocked [2]rotaxane (NAPRTX), we have performed a sensing study of various metal ions. Thus, the interlocked [2]rotaxane is found to have potential as a selective fluorescent sensor for Zn(II) metal ions over other transition, alkali and alkaline earth metal ions, where the 2,2'-bipyridyl arylvinylene moiety of the axle acts as a fluorescence signalling unit.
Collapse
Affiliation(s)
- Somnath Bej
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
| | - Mandira Nandi
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
| | - Pradyut Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
| |
Collapse
|
4
|
Sheetz EG, Zhang Z, Marogil A, Che M, Pink M, Carta V, Raghavachari K, Flood AH. High‐fidelity Recognition of Organotrifluoroborate Anions (R−BF
3
−
) as Designer Guest Molecules. Chemistry 2022; 28:e202201584. [DOI: 10.1002/chem.202201584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Edward G. Sheetz
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Zhao Zhang
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Alyssa Marogil
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Minwei Che
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Maren Pink
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Veronica Carta
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Krishnan Raghavachari
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Amar H. Flood
- Department of Chemistry Indiana University Bloomington 800 E. Kirkwood Ave Bloomington IN 47405 USA
| |
Collapse
|
5
|
Chen X, Liu F. Synthesis and Phase Behavior of a Linear Amphiphilic Multiblock Copolymer. ACS OMEGA 2022; 7:19319-19327. [PMID: 35722003 PMCID: PMC9202289 DOI: 10.1021/acsomega.2c00734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 04/26/2022] [Indexed: 06/15/2023]
Abstract
Linear amphiphilic multiblock copolymer PPMPEs, obtained through a stepwise method, and linear amphiphilic random copolymer PPMPEs-1, obtained through a one-pot method, were synthesized using poly(propylene glycol) diglycidyl ether (PPGDGE), poly(ethylene glycol) diglycidyl ether (PEGDGE), and monoethanolamine (MEA) as the main raw materials. The structures of PPMPEs and PPMPEs-1 were characterized by FT-IR, 1H NMR, and gel permeation chromatography, which proved that the copolymers were synthesized with different components. Transmittance of the copolymer was tested by UV-vis. By changing the ratio of PEGDGE content and the concentration of the copolymer aqueous solution, the phase behaviors of PPMPEs and PPMPEs-1 were compared and studied in depth. It mainly highlighted the advantages of the stepwise method compared to the one-pot method. The transmittance of the polymer solutions could be improved by lowering the pH value in the acidic solution or increasing the pH value in the alkaline solution. Moreover, as the reaction degree of the PPMPEs hydrophobic chain segment increased, the transmittance decreased.
Collapse
|
6
|
Fadler RE, Flood AH. Rigidity and Flexibility in Rotaxanes and Their Relatives; On Being Stubborn and Easy-Going. Front Chem 2022; 10:856173. [PMID: 35464214 PMCID: PMC9022846 DOI: 10.3389/fchem.2022.856173] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/22/2022] [Indexed: 11/30/2022] Open
Abstract
Rotaxanes are an emerging class of molecules composed of two building blocks: macrocycles and threads. Rotaxanes, and their pseudorotaxane and polyrotaxane relatives, serve as prototypes for molecular-level switches and machines and as components in materials like elastic polymers and 3D printing inks. The rigidity and flexibility of these molecules is a characteristic feature of their design. However, the mechanical properties of the assembled rotaxane and its components are rarely examined directly, and the translation of these properties from molecules to bulk materials is understudied. In this Review, we consider the mechanical properties of rotaxanes by making use of concepts borrowed from physical organic chemistry. Rigid molecules have fewer accessible conformations with higher energy barriers while flexible molecules have more accessible conformations and lower energy barriers. The macrocycles and threads become rigidified when threaded together as rotaxanes in which the formation of intermolecular interactions and increased steric contacts collectively reduce the conformational space and raise barriers. Conversely, rotational and translational isomerism in rotaxanes adds novel modes of flexibility. We find that rigidification in rotaxanes is almost universal, but novel degrees of flexibility can be introduced. Both have roles to play in the function of rotaxanes.
Collapse
|
7
|
Aizawa T, Akine S, Saiki T, Nakamura T, Nabeshima T. Rotaxane formation by an allosteric pseudomacrocyclic anion receptor utilising kinetically labile copper( i) coordination properties. Dalton Trans 2022; 51:17277-17282. [DOI: 10.1039/d2dt03331c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pseudomacrocyclic receptor with hydrogen bonding units spontaneously generates a rotaxane with an anionic axle possessing large end groups.
Collapse
Affiliation(s)
- Taeko Aizawa
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shigehisa Akine
- Graduate School of Natural Science and Technology and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Toshiyuki Saiki
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| |
Collapse
|
8
|
Borodin O, Shchukin Y, Robertson CC, Richter S, von Delius M. Self-Assembly of Stimuli-Responsive [2]Rotaxanes by Amidinium Exchange. J Am Chem Soc 2021; 143:16448-16457. [PMID: 34559523 PMCID: PMC8517971 DOI: 10.1021/jacs.1c05230] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Indexed: 01/29/2023]
Abstract
Advances in supramolecular chemistry are often underpinned by the development of fundamental building blocks and methods enabling their interconversion. In this work, we report the use of an underexplored dynamic covalent reaction for the synthesis of stimuli-responsive [2]rotaxanes. The formamidinium moiety lies at the heart of these mechanically interlocked architectures, because it enables both dynamic covalent exchange and the binding of simple crown ethers. We demonstrated that the rotaxane self-assembly follows a unique reaction pathway and that the complex interplay between crown ether and thread can be controlled in a transient fashion by addition of base and fuel acid. Dynamic combinatorial libraries, when exposed to diverse nucleophiles, revealed a profound stabilizing effect of the mechanical bond as well as intriguing reactivity differences between seemingly similar [2]rotaxanes.
Collapse
Affiliation(s)
- Oleg Borodin
- Institute
of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Yevhenii Shchukin
- Institute
of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Craig C. Robertson
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | - Stefan Richter
- Institute
of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Max von Delius
- Institute
of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| |
Collapse
|
9
|
Fadler RE, Al Ouahabi A, Qiao B, Carta V, König NF, Gao X, Zhao W, Zhang Y, Lutz JF, Flood AH. Chain Entropy Beats Hydrogen Bonds to Unfold and Thread Dialcohol Phosphates inside Cyanostar Macrocycles To Form [3]Pseudorotaxanes. J Org Chem 2021; 86:4532-4546. [PMID: 33636075 PMCID: PMC8063573 DOI: 10.1021/acs.joc.0c02887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The recognition of substituted phosphates underpins many processes including DNA binding, enantioselective catalysis, and recently template-directed rotaxane synthesis. Beyond ATP and a few commercial substrates, however, little is known about how substituents effect organophosphate recognition. Here, we examined alcohol substituents and their impact on recognition by cyanostar macrocycles. The organophosphates were disubstituted by alcohols of various chain lengths, dipropanol, dihexanol, and didecanol phosphate, each accessed using modular solid-phases syntheses. Based on the known size-selective binding of phosphates by π-stacked dimers of cyanostars, threaded [3]pseudorotaxanes were anticipated. While seen with butyl substituents, pseudorotaxane formation was disrupted by competitive OH···O- hydrogen bonding between both terminal hydroxyls and the anionic phosphate unit. Crystallography also showed formation of a backfolded propanol conformation resulting in an 8-membered ring and a perched cyanostar assembly. Motivated by established entropic penalties accompanying ring formation, we reinstated [3]pseudorotaxanes by extending the size of the substituent to hexanol and decanol. Chain entropy overcomes the enthalpically favored OH···O- contacts to favor random-coil conformations required for seamless, high-fidelity threading of dihexanol and didecanol phosphates inside cyanostars. These studies highlight how chain length and functional groups on phosphate's substituents can be powerful design tools to regulate binding and control assembly formation during phosphate recognition.
Collapse
Affiliation(s)
- Rachel E Fadler
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Abdelaziz Al Ouahabi
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Bo Qiao
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Veronica Carta
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Niklas F König
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Xinfeng Gao
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Wei Zhao
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Yankai Zhang
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Jean-François Lutz
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Amar H Flood
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| |
Collapse
|
10
|
Taghavi Shahraki B, Maghsoudi S, Fatahi Y, Rabiee N, Bahadorikhalili S, Dinarvand R, Bagherzadeh M, Verpoort F. The flowering of Mechanically Interlocked Molecules: Novel approaches to the synthesis of rotaxanes and catenanes. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213484] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
11
|
Dhara A, Sadhukhan T, Sheetz EG, Olsson AH, Raghavachari K, Flood AH. Zero-Overlap Fluorophores for Fluorescent Studies at Any Concentration. J Am Chem Soc 2020; 142:12167-12180. [PMID: 32539380 DOI: 10.1021/jacs.0c02450] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Fluorophores are powerful tools for the study of chemistry, biology, and physics. However, fluorescence is severely impaired when concentrations climb above 5 μM as a result of effects like self-absorption and chromatic shifts in the emitted light. Herein, we report the creation of a charge-transfer (CT) fluorophore and the discovery that its emission color seen at low concentrations is unchanged even at 5 mM, some 3 orders of magnitude beyond typical limits. The fluorophore is composed of a triphenylamine-substituted cyanostar macrocycle, and it exhibits a remarkable Stokes shift of 15 000 cm-1 to generate emission at 633 nm. Crucial to the performance of this fluorophore is the observation that its emission spectrum shows near-zero overlap with the absorption band at 325 nm. We propose that reducing the spectral overlap to zero is a key to achieving full fluorescence across all concentrations. The triphenylamine donor and five cyanostilbene acceptor units of the macrocycle generate an emissive CT state. Unlike closely related donor-acceptor control compounds showing dual emission, the cyanostar framework inhibited emission from the second state to create a zero-overlap fluorophore. We demonstrated the use of emission spectroscopy for characterization of host-guest complexation at millimolar concentrations, which are typically the exclusive domain of NMR spectroscopy. The binding of the PF6- anion generates a 2:1 sandwich complex with blue-shifted emission. Distinct from twisted intramolecular charge-transfer (TICT) states, experiment-supported density functional theory shows a 67° twist inside an acceptor unit in the CT state instead of displaying a twist between the donor and acceptor; it is TICT-like. Inspired by the findings, we uncovered similar concentration-independent behavior from a control compound, strongly suggesting this behavior may be latent to other large Stokes-shift fluorophores. We discuss strategies capable of generating zero-overlap fluorophores to enable accurate fluorescence characterization of processes across all practical concentrations.
Collapse
Affiliation(s)
- Ayan Dhara
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Tumpa Sadhukhan
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Edward G Sheetz
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Andrew H Olsson
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H Flood
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| |
Collapse
|
12
|
Nakamura T, Mori Y, Naito M, Okuma Y, Miyagawa S, Takaya H, Kawasaki T, Tokunaga Y. Rotaxanes comprising cyclic phenylenedioxydiacetamides and secondary mono- and bis-dialkylammonium ions: effect of macrocyclic ring size on pseudorotaxane formation. Org Chem Front 2020. [DOI: 10.1039/c9qo01359h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[2]Rotaxanes, stabilized through multiple and cooperative hydrogen bonding system, were synthesized from dialkylammonium ions and macrocycle possessing two phenylenedioxydiacetamide units and appropriate spacers.
Collapse
Affiliation(s)
- Takanori Nakamura
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Yuka Mori
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Masaya Naito
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Yukari Okuma
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Shinobu Miyagawa
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Hikaru Takaya
- International Research Center for Elements Science
- Institute for Chemical Research
- Kyoto University
- Uji 611-0011
- Japan
| | - Tsuneomi Kawasaki
- Department of Applied Chemistry
- Tokyo University of Science
- Tokyo 162-8601
- Japan
| | - Yuji Tokunaga
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| |
Collapse
|
13
|
Zhou HY, Zong QS, Han Y, Chen CF. Recent advances in higher order rotaxane architectures. Chem Commun (Camb) 2020; 56:9916-9936. [PMID: 32638726 DOI: 10.1039/d0cc03057k] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Despite dramatic advances in the template-directed synthesis of archetypal [2]rotaxanes, higher order rotaxanes with multiple molecular components (rings or dumbbells) are relatively daunting subjects owing to their synthetic challenges. With unique interlocked architectures, higher order rotaxanes have found applications in artificial molecular machines. In this feature article, we will focus on the recent advances in higher order rotaxanes with well-defined structures. Different types of rotaxane architectures will be described, and their synthetic approaches will be highlighted. Moreover, the stimuli-responsive molecular motion with increasing complexity in these diverse architectures will also be discussed.
Collapse
Affiliation(s)
- He-Ye Zhou
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian-Shou Zong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
14
|
Kandrnálová M, Kokan Z, Havel V, Nečas M, Šindelář V. Hypervalent Iodine Based Reversible Covalent Bond in Rotaxane Synthesis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908953] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Markéta Kandrnálová
- Department of Chemistry and RECETOXFaculty of ScienceMasaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Zoran Kokan
- Department of Chemistry and RECETOXFaculty of ScienceMasaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Václav Havel
- Department of Chemistry and RECETOXFaculty of ScienceMasaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Marek Nečas
- Department of Chemistry and RECETOXFaculty of ScienceMasaryk University Kamenice 5 625 00 Brno Czech Republic
| | - Vladimír Šindelář
- Department of Chemistry and RECETOXFaculty of ScienceMasaryk University Kamenice 5 625 00 Brno Czech Republic
| |
Collapse
|
15
|
Kandrnálová M, Kokan Z, Havel V, Nečas M, Šindelář V. Hypervalent Iodine Based Reversible Covalent Bond in Rotaxane Synthesis. Angew Chem Int Ed Engl 2019; 58:18182-18185. [PMID: 31587433 DOI: 10.1002/anie.201908953] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Indexed: 12/20/2022]
Abstract
Reversible covalent bonds play a significant role in achieving the high-yielding synthesis of mechanically interlocked molecules. Still, only a handful of such bonds have been successfully employed in synthetic procedures. Herein, we introduce a novel approach for the fast and simple preparation of interlocked molecules, combining the dynamic bond character of bis(acyloxy)iodate(I) anions with macrocyclic bambusuril anion receptors. The proof of principle was demonstrated on rotaxane synthesis, with near-quantitative yields observed in both the classical and "in situ" approach. The rotaxane formation was confirmed in the solid-state and solution by the X-ray and NMR studies. Our novel approach could be utilized in the fields of dynamic combinatorial chemistry, supramolecular polymers, or molecular machines, as well inspire further research on molecules that exhibit dynamic behavior, but owing to their high reactivity, have not been considered as constituents of more elaborate supramolecular structures.
Collapse
Affiliation(s)
- Markéta Kandrnálová
- Department of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Zoran Kokan
- Department of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Václav Havel
- Department of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Marek Nečas
- Department of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Vladimír Šindelář
- Department of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| |
Collapse
|
16
|
Huang SY, Qian M, Pierre VC. A Combination of Factors: Tuning the Affinity of Europium Receptors for Phosphate in Water. Inorg Chem 2019; 58:16087-16099. [PMID: 31738520 DOI: 10.1021/acs.inorgchem.9b02650] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Although recognition of hard anions by hard metal ions is primarily achieved via direct coordination, electrostatic and hydrogen-bonding interactions also play essential roles in tuning the affinity of such supramolecular receptors for their target. In the case of EuIII hydroxypyridinone-based complexes, the addition of a single charged group (-NH3+, -CO2-, or -SO3-) or neutral hydrogen-bonding moiety (-OH) peripheral to the open coordination site substantially affects the affinity of the metal receptor for phosphate in water at neutral pH. A single primary ammonium increases the first association constant for phosphate in neutral water by 2 orders of magnitude over its neutral analogue. The addition of a peripheral alcohol group also increases the affinity of the receptor but to a lesser degree (21-fold). On the other hand, negatively charged complexes bearing either a carboxylate or sulfate moiety have negligible affinity for phosphate. Interestingly, the peripheral group also influences the stoichiometry of the lanthanide receptor for phosphate. While the complex bearing a -NH3+ group binds phosphate in a 1:2 ratio, those with -OH and H (control) both form 1:3 complexes. Although the positively charged EuIII-Lys-HOPO has the highest Ka1 for phosphate, a greater increase in luminescence intensity (36-fold) is observed with the neutral EuIII-Ser-HOPO complex. Notably, whereas the affinity of the EuIII complexes for phosphate is substantially influenced by the presence of a single charged group or hydrogen-bond donor, their selectivity for phosphate over competing anions remains unaffected by the addition of the peripheral groups.
Collapse
Affiliation(s)
- Sheng-Yin Huang
- Department of Chemistry , University of Minnesota , Pleasant St. SE , Minneapolis , Minnesota 55455 , United States
| | - Michelle Qian
- Department of Chemistry , University of Minnesota , Pleasant St. SE , Minneapolis , Minnesota 55455 , United States
| | - Valerie C Pierre
- Department of Chemistry , University of Minnesota , Pleasant St. SE , Minneapolis , Minnesota 55455 , United States
| |
Collapse
|
17
|
Sluysmans D, Stoddart JF. The Burgeoning of Mechanically Interlocked Molecules in Chemistry. TRENDS IN CHEMISTRY 2019. [DOI: 10.1016/j.trechm.2019.02.013] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
18
|
|
19
|
Abstract
This feature article summarizes the latest research progress in the design and development of new synthetic macrocyclic arenes.
Collapse
Affiliation(s)
- Jia-Rui Wu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- College of Chemistry
- Jilin University
- 2699 Qianjin Street
| | - Ying-Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- College of Chemistry
- Jilin University
- 2699 Qianjin Street
| |
Collapse
|
20
|
Parks FC, Liu Y, Debnath S, Stutsman SR, Raghavachari K, Flood AH. Allosteric Control of Photofoldamers for Selecting between Anion Regulation and Double-to-Single Helix Switching. J Am Chem Soc 2018; 140:17711-17723. [DOI: 10.1021/jacs.8b10538] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Fred C. Parks
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Yun Liu
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Sibali Debnath
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Sydney R. Stutsman
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H. Flood
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| |
Collapse
|
21
|
Sheetz EG, Qiao B, Pink M, Flood AH. Programmed Negative Allostery with Guest-Selected Rotamers Control Anion–Anion Complexes of Stackable Macrocycles. J Am Chem Soc 2018; 140:7773-7777. [DOI: 10.1021/jacs.8b02993] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Edward G. Sheetz
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Bo Qiao
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Maren Pink
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H. Flood
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| |
Collapse
|
22
|
Löw H, Mena-Osteritz E, von Delius M. Self-assembled orthoester cryptands: orthoester scope, post-functionalization, kinetic locking and tunable degradation kinetics. Chem Sci 2018; 9:4785-4793. [PMID: 29910929 PMCID: PMC5982201 DOI: 10.1039/c8sc01750f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 04/26/2018] [Indexed: 01/01/2023] Open
Abstract
Dynamic adaptability and biodegradability are key features of functional, 21st century host-guest systems. We have recently discovered a class of tripodal supramolecular hosts, in which two orthoesters act as constitutionally dynamic bridgeheads. Having previously demonstrated the adaptive nature of these hosts, we now report the synthesis and characterization - including eight solid state structures - of a diverse set of orthoester cages, which provides evidence for the broad scope of this new host class. With the same set of compounds, we demonstrated that the rates of orthoester exchange and hydrolysis can be tuned over a remarkably wide range, from rapid hydrolysis at pH 8 to nearly inert at pH 1, and that the Taft parameter of the orthoester substituent allows an adequate prediction of the reaction kinetics. Moreover, the synthesis of an alkyne-capped cryptand enabled the post-functionalization of orthoester cryptands by Sonogashira and CuAAC "click" reactions. The methylation of the resulting triazole furnished a cryptate that was kinetically inert towards orthoester exchange and hydrolysis at pH > 1, which is equivalent to the "turnoff" of constitutionally dynamic imines by means of reduction. These findings indicate that orthoester cages may be more broadly useful than anticipated, e.g. as drug delivery agents with precisely tunable biodegradability or, thanks to the kinetic locking strategy, as ion sensors.
Collapse
Affiliation(s)
- Henrik Löw
- Institute of Organic Chemistry and Advanced Materials , University of Ulm , Albert-Einstein-Allee 11 , 89081 Ulm , Germany .
| | - Elena Mena-Osteritz
- Institute of Organic Chemistry and Advanced Materials , University of Ulm , Albert-Einstein-Allee 11 , 89081 Ulm , Germany .
| | - Max von Delius
- Institute of Organic Chemistry and Advanced Materials , University of Ulm , Albert-Einstein-Allee 11 , 89081 Ulm , Germany .
| |
Collapse
|
23
|
Zahran EM, Fatila EM, Chen CH, Flood AH, Bachas LG. Cyanostar: C–H Hydrogen Bonding Neutral Carrier Scaffold for Anion-Selective Sensors. Anal Chem 2018; 90:1925-1933. [DOI: 10.1021/acs.analchem.7b04008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Elsayed M. Zahran
- Department
of Chemistry, University of Miami, Coral Gables, Florida 33126, United States
- Applied
Organic Chemistry Department, National Research Centre, Cairo, 12622, Egypt
| | - Elisabeth M. Fatila
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Chun-Hsing Chen
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H. Flood
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Leonidas G. Bachas
- Department
of Chemistry, University of Miami, Coral Gables, Florida 33126, United States
| |
Collapse
|
24
|
Fujino T, Naitoh H, Miyagawa S, Kimura M, Kawasaki T, Yoshida K, Inoue H, Takagawa H, Tokunaga Y. Formation of [2]- and [3]Rotaxanes through Bridging under Kinetic and Thermodynamic Control. Org Lett 2018; 20:369-372. [PMID: 29283267 DOI: 10.1021/acs.orglett.7b03615] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient synthesis of a doubly stranded [3]rotaxane has been developed through bridging of a pseudo[3]rotaxane featuring two axle components. Reversible azine formation was effective as the bridging reaction. Kinetic and thermodynamic conditions provided the [2]- and [3]rotaxanes, respectively.
Collapse
Affiliation(s)
- Takaaki Fujino
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui , Bunkyo, Fukui 910-8507, Japan
| | - Hirotake Naitoh
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui , Bunkyo, Fukui 910-8507, Japan
| | - Shinobu Miyagawa
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui , Bunkyo, Fukui 910-8507, Japan
| | - Masaki Kimura
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui , Bunkyo, Fukui 910-8507, Japan
| | - Tsuneomi Kawasaki
- Department of Applied Chemistry, Tokyo University of Science , Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kazuyuki Yoshida
- Forensic Science Laboratory, Fukui Prefectural Police Headquarters , Ohte, Fukui 910-8515, Japan
| | - Hajime Inoue
- Forensic Science Laboratory, Fukui Prefectural Police Headquarters , Ohte, Fukui 910-8515, Japan
| | - Hiroaki Takagawa
- Forensic Science Laboratory, Fukui Prefectural Police Headquarters , Ohte, Fukui 910-8515, Japan
| | - Yuji Tokunaga
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui , Bunkyo, Fukui 910-8507, Japan
| |
Collapse
|
25
|
Abstract
This review introduces the interplay of anion coordination and supramolecular self-assembly, presenting recent progress in anion-induced and anion-coordination-based self-assemblies.
Collapse
Affiliation(s)
- Dong 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
| | - Jie 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
| | - 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
| | - 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
| |
Collapse
|
26
|
Abstract
Two or more anions constrained in close proximity within a single pocket are found in a number of natural systems but a less common motif in artificial systems. This review summarizes work on anion receptors capable of stabilizing anionic dimers, trimers, tetramers and clusters in a well-defined fashion. These systems may provide insights into the fundamental chemistry of anion-anion interactions and provide a guide for understanding in greater detail a number of biological and environmental processes, as well as key tenants of relevance to supramolecular chemistry, extraction, transport, crystal engineering, and the like. The primary goal of this review is to provide a general introduction into multi-anion recognition chemistry for the benefit of supramolecular and non-supramolecular chemists alike.
Collapse
Affiliation(s)
- Qing He
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street-A5300, Austin, Texas 78712-1224, United States
| | - Peiyu Tu
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street-A5300, Austin, Texas 78712-1224, United States
| | - Jonathan L Sessler
- Center for Supramolecular Chemistry and Catalysis, Shanghai University, Shanghai 200444, China.,Department of Chemistry, The University of Texas at Austin, 105 East 24th Street-A5300, Austin, Texas 78712-1224, United States
| |
Collapse
|
27
|
Zhao W, Qiao B, Chen C, Flood AH. High‐Fidelity Multistate Switching with Anion–Anion and Acid–Anion Dimers of Organophosphates in Cyanostar Complexes. Angew Chem Int Ed Engl 2017; 56:13083-13087. [DOI: 10.1002/anie.201707869] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Wei Zhao
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Bo Qiao
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Chun‐Hsing Chen
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Amar H. Flood
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| |
Collapse
|
28
|
Zhao W, Qiao B, Chen C, Flood AH. High‐Fidelity Multistate Switching with Anion–Anion and Acid–Anion Dimers of Organophosphates in Cyanostar Complexes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707869] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Wei Zhao
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Bo Qiao
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Chun‐Hsing Chen
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Amar H. Flood
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| |
Collapse
|
29
|
Shi Q, Han Y, Chen CF. Complexation Between (O-Methyl) 6 -2,6-Helic[6]arene and Tertiary Ammonium Salts: Acid/Base- or Chloride-Ion-Responsive Host-Guest Systems and Synthesis of [2]Rotaxane. Chem Asian J 2017; 12:2576-2582. [PMID: 28703463 DOI: 10.1002/asia.201700857] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/12/2017] [Indexed: 02/02/2023]
Abstract
Complexation between (O-methyl)6 -2,6-helic[6]arene and a series of tertiary ammonium salts was described. It was found that the macrocycle could form stable complexes with the tested aromatic and aliphatic tertiary ammonium salts, which were evidenced by 1 H NMR spectra, ESI mass spectra, and DFT calculations. In particular, the binding and release process of the guests in the complexes could be efficiently controlled by acid/base or chloride ions, which represents the first acid/base- and chloride-ion-responsive host-guest systems based on macrocyclic arenes and protonated tertiary ammonium salts. Moreover, the first 2,6-helic[6]arene-based [2]rotaxane was also synthesized from the condensation between the host-guest complex and isocyanate.
Collapse
Affiliation(s)
- Qiang Shi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| |
Collapse
|
30
|
De Bo G, Gall MAY, Kitching MO, Kuschel S, Leigh DA, Tetlow DJ, Ward JW. Sequence-Specific β-Peptide Synthesis by a Rotaxane-Based Molecular Machine. J Am Chem Soc 2017; 139:10875-10879. [DOI: 10.1021/jacs.7b05850] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Guillaume De Bo
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Malcolm A. Y. Gall
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Matthew O. Kitching
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Sonja Kuschel
- 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
| | - Daniel J. Tetlow
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - John W. Ward
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| |
Collapse
|
31
|
Qiao B, Hirsch BE, Lee S, Pink M, Chen CH, Laursen BW, Flood AH. Ion-Pair Oligomerization of Chromogenic Triangulenium Cations with Cyanostar-Modified Anions That Controls Emission in Hierarchical Materials. J Am Chem Soc 2017; 139:6226-6233. [DOI: 10.1021/jacs.7b01937] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Bo Qiao
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Brandon E. Hirsch
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Semin Lee
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Maren Pink
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Chun-Hsing Chen
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Bo W. Laursen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, København Ø 2100, Denmark
| | - Amar H. Flood
- Department
of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| |
Collapse
|
32
|
Abstract
This feature article surveys the various ways by which a structurally simple hydrazone can be used in accessing different functional materials, mainly photo/chemically activated switches, fluorophores and sensors.
Collapse
|
33
|
Li X, Yuan X, Deng P, Chen L, Ren Y, Wang C, Wu L, Feng W, Gong B, Yuan L. Macrocyclic shape-persistency of cyclo[6]aramide results in enhanced multipoint recognition for the highly efficient template-directed synthesis of rotaxanes. Chem Sci 2016; 8:2091-2100. [PMID: 28451329 PMCID: PMC5399641 DOI: 10.1039/c6sc04714a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 11/21/2016] [Indexed: 12/16/2022] Open
Abstract
Examples of using two-dimensional shape-persistent macrocycles, i.e. those having noncollapsible and geometrically well-defined skeletons, for constructing mechanically interlocked molecules are scarce, which contrasts the many applications of these macrocycles in molecular recognition and functional self-assembly. Herein, we report the crucial role played by macrocyclic shape-persistency in enhancing multipoint recognition for the highly efficient template-directed synthesis of rotaxanes. Cyclo[6]aramides, with a near-planar conformation, are found to act as powerful hosts that bind bipyridinium salts with high affinities. This unique recognition module, composed of two macrocyclic molecules with one bipyridinium ion thread through the cavity, is observed both in the solid state and in solution, with unusually high binding constants ranging from ∼1013 M-2 to ∼1015 M-2 in acetone. The high efficacy of this recognition motif is embodied by the formation of compact [3]rotaxanes in excellent yields based on either a "click-capping" (91%) or "facile one-pot" (85%) approach, underscoring the great advantage of using H-bonded aromatic amide macrocycles for the highly efficient template-directed synthesis of mechanically interlocked structures. Furthermore, three cyclo[6]aramides bearing different peripheral chains 1-3 demonstrate high specificity in the synthesis of a [3]rotaxane from 1 and 2, and a [2]rotaxane from 3via a "facile one-pot" approach, in each case as the only isolated product. Analysis of the crystal structure of the [3]rotaxane reveals a highly compact binding mode that would be difficult to access using other macrocycles with a flexible backbone. Leveraging this unique recognition motif, resulting from the shape-persistency of these oligoamide macrocycles, in the template-directed synthesis of compact rotaxanes may open up new opportunities for the development of higher order interlocked molecules and artificial molecular machines.
Collapse
Affiliation(s)
- Xiaowei Li
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| | - Xiangyang Yuan
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| | - Pengchi Deng
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| | - Lixi Chen
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| | - Yi Ren
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| | - Chengyuan Wang
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials , Jilin University , Changchun 130012 , China
| | - Wen Feng
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| | - Bing Gong
- Department of Chemistry , The State University of New York , Buffalo , New York 14260 , USA
| | - Lihua Yuan
- College of Chemistry , Key Laboratory for Radiation Physics and Technology of Ministry of Education , Analytical & Testing Center , Sichuan University , Chengdu 610064 , Sichuan , China . ; ; Tel: +86-28-85412890
| |
Collapse
|