1
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Pasitsuparoad P, Angulo G. How relevant is anisotropy in bimolecular electron transfer reactions in liquid crystals? J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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2
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Colasson B, Credi A, Ventura B. Photoinduced Electron Transfer Involving a Naphthalimide Chromophore in Switchable and Flexible [2]Rotaxanes. Chemistry 2019; 26:534-542. [PMID: 31638287 DOI: 10.1002/chem.201904155] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Indexed: 11/10/2022]
Abstract
The interlocking of ring and axle molecular components in rotaxanes provides a way to combine chromophoric, electron-donor and electron-acceptor moieties in the same molecular entity, in order to reproduce the features of photosynthetic reaction centers. To this aim, the photoinduced electron transfer processes involving a 1,8-naphthalimide chromophore, embedded in several rotaxane-based dyads, were investigated by steady-state and time-resolved absorption and luminescence spectroscopic experiments in the 300 fs-10 ns time window. Different rotaxanes built around the dialkylammonium/ dibenzo[24]crown-8 ether supramolecular motif were designed and synthesized to decipher the relevance of key structural factors, such as the chemical deactivation of the ammonium-crown ether recognition, the presence of a secondary site for the ring along the axle, and the covalent functionalization of the macrocycle with a phenothiazine electron donor. Indeed, the conformational freedom of these compounds gives rise to a rich dynamic behavior induced by light and may provide opportunities for investigating and understanding phenomena that take place in complex (bio)molecular architectures.
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Affiliation(s)
- Benoit Colasson
- Université de Paris, UMR 8601, LCBPT, CNRS, 45 rue des Saints-Pères, 75006, Paris, France.,Photochemical Nanosciences Laboratory, Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Alberto Credi
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, viale Fanin 50, 40127, Bologna, Italy.,CLAN-Center for Light Activated Nanostructures, Università di Bologna and Consiglio Nazionale delle Ricerche, via P. Gobetti 101, 40129, Bologna, Italy.,Istituto ISOF-CNR, via P. Gobetti 101, 40129, Bologna, Italy
| | - Barbara Ventura
- Istituto ISOF-CNR, via P. Gobetti 101, 40129, Bologna, Italy
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3
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Moreira L, Calbo J, Aragó J, Illescas BM, Nierengarten I, Delavaux-Nicot B, Ortí E, Martín N, Nierengarten JF. Conjugated Porphyrin Dimers: Cooperative Effects and Electronic Communication in Supramolecular Ensembles with C 60. J Am Chem Soc 2016; 138:15359-15367. [PMID: 27640915 PMCID: PMC5133674 DOI: 10.1021/jacs.6b07250] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Two new conjugated porphyrin-based
systems (dimers 3 and 4) endowed with suitable
crown ethers have been
synthesized as receptors for a fullerene-ammonium salt derivative
(1). Association constants in solution have been determined
by UV–vis titration experiments in CH2Cl2 at room temperature. The designed hosts are able to associate up
to two fullerene-based guest molecules and present association constants
as high as ∼5 × 108 M–1.
Calculation of the allosteric cooperative factor α for supramolecular
complexes [3·12] and [4·12] showed a negative cooperative effect in both cases. The interactions
accounting for the formation of the associates are based, first, on
the complementary ammonium-crown ether interaction and, second, on
the π–π interactions between the porphyrin rings
and the C60 moieties. Theoretical calculations have evidenced
a significant decrease of the electron density in the porphyrin dimers 3 and 4 upon complexation of the first C60 molecule, in good agreement with the negative cooperativity
found in these systems. This negative effect is partially compensated
by the stabilizing C60–C60 interactions
that take place in the more stable syn-disposition
of [4·12].
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Affiliation(s)
- Luis Moreira
- Laboratorie de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), ECPM , 67087 Strasbourg, Cedex 2, France.,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain
| | - Joaquín Calbo
- Instituto de Ciencia Molecular, Universidad de Valencia , 46890 Paterna, Spain
| | - Juan Aragó
- Instituto de Ciencia Molecular, Universidad de Valencia , 46890 Paterna, Spain
| | - Beatriz M Illescas
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain
| | - Iwona Nierengarten
- Laboratorie de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), ECPM , 67087 Strasbourg, Cedex 2, France
| | - Béatrice Delavaux-Nicot
- Laboratoire de Chimie de Coordination du CNRS (UPR 8241), Université de Toulouse (UPS, INPT) , 31077 Toulouse, Cedex 4, France
| | - Enrique Ortí
- Instituto de Ciencia Molecular, Universidad de Valencia , 46890 Paterna, Spain
| | - Nazario Martín
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain.,Imdea-Nanoscience , Campus Cantoblanco, 28049 Madrid, Spain
| | - Jean-François Nierengarten
- Laboratorie de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), ECPM , 67087 Strasbourg, Cedex 2, France
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Castellanos S, Vieira AA, Illescas BM, Sacchetti V, Schubert C, Moreno J, Guldi DM, Hecht S, Martín N. Gating Charge Recombination Rates through Dynamic Bridges in Tetrathiafulvalene-Fullerene Architectures. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306183] [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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6
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Castellanos S, Vieira AA, Illescas BM, Sacchetti V, Schubert C, Moreno J, Guldi DM, Hecht S, Martín N. Gating Charge Recombination Rates through Dynamic Bridges in Tetrathiafulvalene-Fullerene Architectures. Angew Chem Int Ed Engl 2013; 52:13985-90. [DOI: 10.1002/anie.201306183] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 08/16/2013] [Indexed: 11/09/2022]
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7
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Mukherjee S, Bauri AK, Bhattacharya S. Spectroscopic and theoretical insights on effective and selective non-covalent binding between fullerenes (C60 and C70) and a designed diporphyrin in solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:835-839. [PMID: 23892346 DOI: 10.1016/j.saa.2013.06.113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 06/23/2013] [Accepted: 06/28/2013] [Indexed: 06/02/2023]
Abstract
The present work reports the photophysical insights behind effective non-covalent interaction between a designed diporphyrin (1) and fullerenes C60 and C70 in toluene. Ground state electronic interaction between fullerenes and 1 is evidenced from UV-Vis measurements in which it is observed that the intensity of the Soret absorption band of 1 is decreased considerably in presence of both C60 and C70. Steady state fluorescence studies reveal efficient quenching of the fluorescence intensity of 1 in presence of fullerenes. Evaluation of binding constants for the fullerene/1 systems evoke that 1 may be employed as an efficient molecular tweezers for C70 in toluene as selectivity in binding is determined to be ∼9.4. Time resolved emission studies establish relatively long-lived charge separated state for the C70/1 system in comparison to C60/1. Molecular mechanics calculations by force field method in vacuo interpret well regarding stability difference between C60 and C70 complexes of 1 and give formidable support in favor of side-on orientation motif of C70 towards the plane of 1 during non-covalent complexation process.
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Affiliation(s)
- Sibayan Mukherjee
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713 104, India
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8
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Schuster DI. Reflections on a Fifty-Year Career in Organic Photochemistry: A Personal Perspective. J Org Chem 2013; 78:6811-41. [DOI: 10.1021/jo4007078] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- David I. Schuster
- Department of Chemistry, New York University, New York, New York 10003, United States
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9
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Yan H, Zhu L, Li X, Kwok A, Li X, Ågren H, Zhao Y. Photothermal-responsive [2]rotaxanes. RSC Adv 2013. [DOI: 10.1039/c2ra22171c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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10
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Lazorski MS, Gest RH, Elliott CM. Photoinduced multistep charge separation in a heteroleptic Cu(I) bis(phenanthroline)-based donor-chromophore-acceptor triad. J Am Chem Soc 2012; 134:17466-9. [PMID: 23030254 DOI: 10.1021/ja3085093] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A molecular triad assembly consisting of an electron donor, a bis(phenanthroline)copper(I) chromophore, and an electron acceptor has been prepared. Under visible-light excitation, this assembly undergoes efficient (ca. 50%) photoinduced, multistep formation of a diradical cation charge-separated state that has a lifetime of >100 ns and stores >1.0 eV of energy. This system constitutes an earth-abundant functional analogue of related Ru(bpy)(3) triad systems.
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Affiliation(s)
- Megan S Lazorski
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
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11
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Bar AK, Mohapatra S, Zangrando E, Mukherjee PS. A series of trifacial Pd6 molecular barrels with porphyrin walls. Chemistry 2012; 18:9571-9. [PMID: 22744754 DOI: 10.1002/chem.201201077] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Indexed: 01/01/2023]
Abstract
Three new nanoscopic trigonal prisms, [(tmen)(6) Pd(6) (H(2)L)(3)](NO(3))(12) (1), [(Meen)(6) Pd(6)(H(2) L)(3)](NO(3))(12) (2), and [(2,2'-bipy)(6)Pd(6) (H(2)L)(3)](NO(3))(12) (3), have been synthesized in excellent yields through single-step metal-ligand-coordination-driven self-assembly using 5,10,15,20-tetrakis(3-pyridyl)porphyrin (H(2)L) as a donor and cis-blocked Pd(II) 90° acceptors. These complexes were fully characterized by spectroscopic studies and single-crystal X-ray diffraction. All of these barrels quantitatively bind Zn(II) ions in the N(4) pockets of the porphyrin walls at room temperature. Their corresponding zinc-embedded complexes, [(tmen)(6)Pd(6)(ZnL)(3)](NO(3))(12) (1 a), [(Meen)(6) Pd(6)(ZnL)(3)](NO(3))(12) (2 a), and [(2,2'-bipy)(6)Pd(6)(ZnL)(3)](NO(3))(12) (3 a), were synthesized under ambient conditions by the post-synthetic binding of Zn(II) ions into the H(2)N(4) pockets of the porphyrin walls of these complexes. These zinc-embedded complexes were characterized by electronic absorption, fluorescence emission, (1)H NMR spectroscopy, as well as elemental analysis. Complexes 1-3 exhibited considerable microporosity in their solid state. Complex 1 was an efficient adsorbent for nitrogen gas and EtOH, MeOH, and water vapors.
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Affiliation(s)
- Arun Kumar Bar
- Department of Inorganic and Physical Chemistry, Indian Institution of Science, Bangalore 560 012, India
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12
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Beves JE, Blight BA, Campbell CJ, Leigh DA, McBurney RT. Strategien und Taktiken für die metallgesteuerte Synthese von Rotaxanen, Knoten, Catenanen und Verschlingungen höherer Ordnung. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007963] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Beves JE, Blight BA, Campbell CJ, Leigh DA, McBurney RT. Strategies and tactics for the metal-directed synthesis of rotaxanes, knots, catenanes, and higher order links. Angew Chem Int Ed Engl 2011; 50:9260-327. [PMID: 21928462 DOI: 10.1002/anie.201007963] [Citation(s) in RCA: 569] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Indexed: 11/06/2022]
Abstract
More than a quarter of a century after the first metal template synthesis of a [2]catenane in Strasbourg, there now exists a plethora of strategies available for the construction of mechanically bonded and entwined molecular level structures. Catenanes, rotaxanes, knots and Borromean rings have all been successfully accessed by methods in which metal ions play a pivotal role. Originally metal ions were used solely for their coordination chemistry; acting either to gather and position the building blocks such that subsequent reactions generated the interlocked products or by being an integral part of the rings or "stoppers" of the interlocked assembly. Recently the role of the metal has evolved to encompass catalysis: the metal ions not only organize the building blocks in an entwined or threaded arrangement but also actively promote the reaction that covalently captures the interlocked structure. This Review outlines the diverse strategies that currently exist for forming mechanically bonded molecular structures with metal ions and details the tactics that the chemist can utilize for creating cross-over points, maximizing the yield of interlocked over non-interlocked products, and the reactions-of-choice for the covalent capture of threaded and entwined intermediates.
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Affiliation(s)
- Jonathon E Beves
- School of Chemistry, University of Edinburgh, Edinburgh EH9 3JJ, UK
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14
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Zhang XF, Wang J. Morpholine-Phthalocyanine (Donor–Acceptor) Construct: Photoinduced Intramolecular Electron Transfer and Triplet Formation from its Charge Separation State. J Phys Chem A 2011; 115:8597-603. [DOI: 10.1021/jp202997e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Xian-Fu Zhang
- Chemistry Department, Hebei Normal University of Science and Technology, Qinghuangdao, Hebei Province, China 066004
- MPC Technology, Hamilton, ON, Canada L8S 3H4
| | - Jing Wang
- Chemistry Department, Hebei Normal University of Science and Technology, Qinghuangdao, Hebei Province, China 066004
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15
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Kahnt A, Kärnbratt J, Esdaile LJ, Hutin M, Sawada K, Anderson HL, Albinsson B. Temperature dependence of charge separation and recombination in porphyrin oligomer-fullerene donor-acceptor systems. J Am Chem Soc 2011; 133:9863-71. [PMID: 21595470 PMCID: PMC3119959 DOI: 10.1021/ja2019367] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Indexed: 01/12/2023]
Abstract
Electron-transfer reactions are fundamental to many practical devices, but because of their complexity, it is often very difficult to interpret measurements done on the complete device. Therefore, studies of model systems are crucial. Here the rates of charge separation and recombination in donor-acceptor systems consisting of a series of butadiyne-linked porphyrin oligomers (n = 1-4, 6) appended to C(60) were investigated. At room temperature, excitation of the porphyrin oligomer led to fast (5-25 ps) electron transfer to C(60) followed by slower (200-650 ps) recombination. The temperature dependence of the charge-separation reaction revealed a complex process for the longer oligomers, in which a combination of (i) direct charge separation and (ii) migration of excitation energy along the oligomer followed by charge separation explained the observed fluorescence decay kinetics. The energy migration is controlled by the temperature-dependent conformational dynamics of the longer oligomers and thereby limits the quantum yield for charge separation. Charge recombination was also studied as a function of temperature through measurements of femtosecond transient absorption. The temperature dependence of the electron-transfer reactions could be successfully modeled using the Marcus equation through optimization of the electronic coupling (V) and the reorganization energy (λ). For the charge-separation rate, all of the donor-acceptor systems could be successfully described by a common electronic coupling, supporting a model in which energy migration is followed by charge separation. In this respect, the C(60)-appended porphyrin oligomers are suitable model systems for practical charge-separation devices such as bulk-heterojunction solar cells, where conformational disorder strongly influences the electron-transfer reactions and performance of the device.
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Affiliation(s)
- Axel Kahnt
- Physical Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 3, 412 96 Göteborg, Sweden
| | - Joakim Kärnbratt
- Physical Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 3, 412 96 Göteborg, Sweden
| | - Louisa J. Esdaile
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Marie Hutin
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Katsutoshi Sawada
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Harry L. Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Bo Albinsson
- Physical Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 3, 412 96 Göteborg, Sweden
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Jakob M, Berg A, Levanon H, Schuster DI, Megiatto JD. Photoexcited state properties of H2-porphyrin/C60-based rotaxanes as studied by time-resolved electron paramagnetic resonance spectroscopy. J Phys Chem A 2011; 115:5044-52. [PMID: 21528881 DOI: 10.1021/jp202008j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Light-driven intramolecular electron transfer (ET) and energy transfer (EnT) processes in two rotaxanes, the first containing two free base porphyrins and C(60) fullerene moieties incorporated around a Cu(I)bisphenanthroline core ((H(2)P)(2)-Cu(I)(phen)(2)-C(60)) and a second lacking the fullerene moiety ((H(2)P)(2)-Cu(I)(phen)(2)), were studied by X-band (9.5 GHz) time-resolved electron paramagnetic resonance (TREPR) spectroscopy. The experiments were performed in frozen toluene and ethanol and different phases of the nematic liquid crystal (E-7). It is demonstrated that the ET and EnT processes in the (H(2)P)(2)-Cu(I)(phen)(2)-C(60) rotaxane in different media result in the formation of the same charge-separated state, namely (H(2)P)(2)(•+)-Cu(I)(phen)(2)(•-)-C(60), while photoexcitation of the (H(2)P)(2)-Cu(I)(phen)(2) rotaxane does not induce noticeable transfer processes in these matrices. The results are discussed in terms of the high conformational mobility of the rotaxanes, which enables changes in the molecular topography and resultant modification of the rates and routes of photoinduced processes occurring in these systems. The parameters of the transfer processes are compared with those obtained in our previous study of (ZnP)(2)-Cu(I)(phen)(2)-C(60) and (ZnP)(2)-Cu(I)(phen)(2) rotaxanes under the same experimental conditions.
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Affiliation(s)
- Manuela Jakob
- Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem, Israel
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17
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Mateo-Alonso A. Mechanically interlocked molecular architectures functionalised with fullerenes. Chem Commun (Camb) 2010; 46:9089-99. [DOI: 10.1039/c0cc03724a] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Gibson HW, Ge Z, Jones JW, Harich K, Pederson A, Dorn HC. Supramacromolecular chemistry: Self‐assembly of polystyrene‐based multi‐armed pseudorotaxane star polymers from multi‐topic C
60
derivatives. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23688] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Harry W. Gibson
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061‐0212
| | - Zhongxin Ge
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061‐0212
| | - Jason W. Jones
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061‐0212
| | - Kim Harich
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061‐0212
| | - Adam Pederson
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061‐0212
| | - Harry C. Dorn
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061‐0212
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