1
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Hurtado CS, Bastien G, Rončević I, Dračínský M, Tortorici T, Rogers CT, Michl J, Kaleta J. Regular arrays of C 60-based molecular rotors mounted on the surface of tris( o-phenylenedioxy)cyclotriphosphazene nanocrystals. Chem Commun (Camb) 2024; 60:960-963. [PMID: 37955197 DOI: 10.1039/d3cc04559e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Dielectric spectroscopy has been used to determine the barriers of rotation of surface-mounted fullerenes (2.3 ± 0.1 and 4.3 ± 0.1 kcal mol-1). In order to achieve this, a C60 derivative equipped with an anchoring group designed to form a surface inclusion with the hexagonal form of tris(o-phenylenedioxy)cyclotriphosphazene (TPP) has been synthesized. Solid-state NMR analysis revealed that approximately 50% of the surface-mounted molecules have a chemical environment different from the others suggesting two distinct insertion modes. These observations correlate with results of DFT calculations.
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Affiliation(s)
- Carina Santos Hurtado
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic.
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic.
| | - Igor Rončević
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford OX1 3TA, UK
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic.
| | - Teddy Tortorici
- Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
| | - Charles T Rogers
- Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic.
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
| | - Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic.
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2
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Estrada AL, Wang L, Bhuvanesh N, Hampel F, Gladysz JA. Syntheses, Structures, Reactivities, and Dynamic Properties of Gyroscope-like Complexes Consisting of Rh(CO)(X) or Rh(CO)2(I) Rotators and Cage-like Trans Aliphatic Dibridgehead Diphosphine Stators. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00708] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander L. Estrada
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Leyong Wang
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054 Erlangen, Germany
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Frank Hampel
- Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054 Erlangen, Germany
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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3
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Dračínský M, Hurtado CS, Masson E, Kaleta J. Stuffed pumpkins: mechanochemical synthesis of host-guest complexes with cucurbit[7]uril. Chem Commun (Camb) 2021; 57:2132-2135. [PMID: 33605291 DOI: 10.1039/d1cc00240f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Solvent-free mechanochemical synthesis (ball-milling) was used to prepare inclusion complexes with cucurbit[7]uril and four model guest molecules (adamantane, adamantyl-1-amine hydrochloride, toluidine hydrochloride, and p-phenylenediamine dihydrochloride). Successful formation of individual inclusions was independently confirmed by one- and two-dimensional solid-state NMR techniques and differential scanning calorimetry. Mechanochemical synthesis represents an alternative path towards new types of cucurbit[n]uril/guest inclusion complexes that are not accessible due to limited solubility of the individual components.
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Affiliation(s)
- Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague 6, Czech Republic.
| | - Carina Santos Hurtado
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague 6, Czech Republic.
| | - Eric Masson
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
| | - Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague 6, Czech Republic.
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4
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Zarcone SR, Chu GM, Ehnbom A, Cardenal A, Fiedler T, Bhuvanesh N, Hall MB, Gladysz JA. Toward Frameworks with Multiple Aligned and Interactive Fe(CO) 3 Rotators: Syntheses and Structures of Diiron Complexes Linked by Two trans-Diaxial α,ω-Diphosphine Ligands Ar 2P(CH 2) nPAr 2. Inorg Chem 2021; 60:3314-3330. [PMID: 33571407 DOI: 10.1021/acs.inorgchem.0c03737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reactions of (η4-benzylideneacetone)Fe(CO)3 and the α,ω-diphosphines Ar2P(CH2)nPAr2 afford the trigonal bipyramidal diiron tetraphosphorus complexes trans,trans-(CO)3Fe[Ar2P(CH2)nPAr2]2Fe(CO)3 (n/Ar = 3/Ph 3, 4/Ph 4a, 4/p-tol 4b; 56-19%). Crystal structures establish essentially parallel P-Fe-P axes, iron-iron distances of 5.894(9)-5.782(1) Å (3) and 6.403(1)-6.466(1) Å (4a,b), and van der Waals radii of 4.45 Å for the Fe(CO)3 rotators, the planes of which are offset by 0.029-1.665 Å. Analogous reactions of Ph2P(CH2)6PPh2 yield the square pyramidal monoiron complex trans-(CO)3Fe[Ph2P(CH2)6PPh2] (6', 31%), a rare case where a diphosphine spans trans basal positions (∠P-Fe-P 147.4(2)°). Both 3 and 6' exhibit two CO 13C NMR signals at room temperature, indicating slow exchange on the NMR time scale, which in the former could entail Fe(CO)3/Fe(CO)3 gearing. Under analogous conditions, 4a,b exhibit one signal. Previously reported adducts of Fe(CO)3 and Ph2P(CH2)nPPh2 are surveyed (1:1, n = 1-5; 2:2, n = 5), and the IR νC≡O band patterns and energies of all complexes analyzed with the aid of DFT calculations. The diiron complexes are preferred thermodynamically. Attention is given to limiting types of Fe(CO)3/Fe(CO)3 interactions in the diiron complexes.
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Affiliation(s)
- Samuel R Zarcone
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Gong M Chu
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Andreas Ehnbom
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Ashley Cardenal
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Tobias Fiedler
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Michael B Hall
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - John A Gladysz
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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5
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Ehnbom A, Gladysz JA. Gyroscopes and the Chemical Literature, 2002–2020: Approaches to a Nascent Family of Molecular Devices. Chem Rev 2021; 121:3701-3750. [DOI: 10.1021/acs.chemrev.0c01001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Andreas Ehnbom
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
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Abstract
Three distinct four-component supramolecular nanorotors were prepared, using, for the first time, bipyridine instead of phenanthroline stations in the stator. Following our established self-sorting protocol to multicomponent nanodevices, the nanorotors were self-assembled by mixing the stator, rotators with various pyridine head groups, copper(I) ions and 1,4-diazabicyclo[2.2.2]octane (DABCO). Whereas the exchange of a phenanthroline vs. a bipyridine station did not entail significant changes in the rotational exchange frequency, the para-substituents at the pyridine head group of the rotator had drastic consequences on the speed: 4-OMe (k298 = 35 kHz), 4-H (k298 = 77 kHz) and 4-NO2 (k298 = 843 kHz). The exchange frequency (log k) showed an excellent linear correlation with both the Hammett substituent constants and log K of the copper(I)–ligand interaction, proving that rotator–copper(I) bond cleavage is the key determining factor in the rate-determining step.
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7
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Uslu A, Yeşilot S. Recent advances in the supramolecular assembly of cyclophosphazene derivatives. Dalton Trans 2021; 50:2324-2341. [DOI: 10.1039/d0dt04095a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
There is still room for improvement in supramolecular systems based on cyclophosphazene derivatives and their potential applications.
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Affiliation(s)
- Aylin Uslu
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Serkan Yeşilot
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
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Santos Hurtado C, Bastien G, Mašát M, Štoček JR, Dračínský M, Rončević I, Císařová I, Rogers CT, Kaleta J. Regular Two-Dimensional Arrays of Surface-Mounted Molecular Switches: Switching Monitored by UV–vis and NMR Spectroscopy. J Am Chem Soc 2020; 142:9337-9351. [DOI: 10.1021/jacs.0c01753] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Carina Santos Hurtado
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Milan Mašát
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Jakub Radek Štoček
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Igor Rončević
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Charles T. Rogers
- Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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9
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Kaleta J, Bastien G, Wen J, Dračínský M, Tortorici E, Císařová I, Beale PD, Rogers CT, Michl J. Bulk Inclusions of Double Pyridazine Molecular Rotors in Hexagonal Tris(o-phenylene)cyclotriphosphazene. J Org Chem 2019; 84:8449-8467. [DOI: 10.1021/acs.joc.9b00553] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Jin Wen
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Edward Tortorici
- Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Paul D. Beale
- Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Charles T. Rogers
- Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
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10
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Kaleta J, Rončević I, Císařová I, Dračínský M, Šolínová V, Kašička V, Michl J. Bridge-Chlorinated Bicyclo[1.1.1]pentane-1,3-dicarboxylic Acids. J Org Chem 2019; 84:2448-2461. [DOI: 10.1021/acs.joc.8b02780] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
| | - Igor Rončević
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Veronika Šolínová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Václav Kašička
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
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11
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Kaleta J, Bastien G, Císařová I, Batail P, Michl J. Molecular Rods: Facile Desymmetrization of 1,4-Diethynylbicyclo[2.2.2]octane. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800507] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry AS CR; Flemingovo nám. 2 16610 Praha 6 Czech Republic
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry AS CR; Flemingovo nám. 2 16610 Praha 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University in Prague; Hlavova 2030 12840 Prague 2 Czech Republic
| | - Patrick Batail
- Laboratoire MOLTECH-Anjou; CNRS UMR 6200; Université d'Angers; 49045 Angers France
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry AS CR; Flemingovo nám. 2 16610 Praha 6 Czech Republic
- Department of Chemistry and Biochemistry; University of Colorado; 80309-0215 Boulder CO United States
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12
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Kaleta J, Chen J, Bastien G, Dračínský M, Mašát M, Rogers CT, Feringa BL, Michl J. Surface Inclusion of Unidirectional Molecular Motors in Hexagonal Tris(o-phenylene)cyclotriphosphazene. J Am Chem Soc 2017; 139:10486-10498. [DOI: 10.1021/jacs.7b05404] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Praha 6, Czech Republic
| | - Jiawen Chen
- Department
of Organic and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The Netherlands
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Praha 6, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Praha 6, Czech Republic
| | - Milan Mašát
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Praha 6, Czech Republic
| | - Charles T. Rogers
- Department
of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Ben L. Feringa
- Department
of Organic and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The Netherlands
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Praha 6, Czech Republic
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, United States
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13
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Li W, He CT, Zeng Y, Ji CM, Du ZY, Zhang WX, Chen XM. Crystalline Supramolecular Gyroscope with a Water Molecule as an Ultrasmall Polar Rotator Modulated by Charge-Assisted Hydrogen Bonds. J Am Chem Soc 2017; 139:8086-8089. [DOI: 10.1021/jacs.7b02981] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Wang Li
- Key
Laboratory of Jiangxi University for Functional Materials Chemistry,
College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Chun-Ting He
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, School of
Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Ying Zeng
- Key
Laboratory of Jiangxi University for Functional Materials Chemistry,
College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Cheng-Min Ji
- Fujian
Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zi-Yi Du
- Key
Laboratory of Jiangxi University for Functional Materials Chemistry,
College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Wei-Xiong Zhang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, School of
Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, School of
Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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14
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Šembera F, Plutnar J, Higelin A, Janoušek Z, Císařová I, Michl J. Metal Complexes with Very Large Dipole Moments: the Anionic Carborane Nitriles 12-NC–CB11X11– (X = H, F, CH3) as Ligands on Pt(II) and Pd(II). Inorg Chem 2016; 55:3797-806. [DOI: 10.1021/acs.inorgchem.5b02678] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Filip Šembera
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo nám. 2, 16610 Prague, Czech Republic
| | - Jan Plutnar
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo nám. 2, 16610 Prague, Czech Republic
| | - Alexander Higelin
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo nám. 2, 16610 Prague, Czech Republic
| | - Zbyněk Janoušek
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo nám. 2, 16610 Prague, Czech Republic
| | - Ivana Císařová
- Department
of Inorganic Chemistry, Charles University, Hlavova 2030, 12843 Prague 2, Czech Republic
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo nám. 2, 16610 Prague, Czech Republic
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
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15
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Samanta SK, Rana A, Schmittel M. Konformativer Schlupf bestimmt die Rotationsfrequenz in Fünf-Komponenten-Nanorotoren. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Soumen K. Samanta
- Forschungszentrum für Mikro-/Nanochemie und -technologie Organische Chemie I; Universität Siegen; Adolf-Reichwein-Straße 2 57068 Siegen Deutschland
| | - Anup Rana
- Forschungszentrum für Mikro-/Nanochemie und -technologie Organische Chemie I; Universität Siegen; Adolf-Reichwein-Straße 2 57068 Siegen Deutschland
| | - Michael Schmittel
- Forschungszentrum für Mikro-/Nanochemie und -technologie Organische Chemie I; Universität Siegen; Adolf-Reichwein-Straße 2 57068 Siegen Deutschland
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16
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Samanta SK, Rana A, Schmittel M. Conformational Slippage Determines Rotational Frequency in Five-Component Nanorotors. Angew Chem Int Ed Engl 2016; 55:2267-72. [DOI: 10.1002/anie.201509108] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Soumen K. Samanta
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I; Universität Siegen; Adolf-Reichwein-Strasse 2 57068 Siegen Germany
| | - Anup Rana
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I; Universität Siegen; Adolf-Reichwein-Strasse 2 57068 Siegen Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I; Universität Siegen; Adolf-Reichwein-Strasse 2 57068 Siegen Germany
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17
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Kaleta J, Kaletová E, Císařová I, Teat SJ, Michl J. Synthesis of Triptycene-Based Molecular Rotors for Langmuir–Blodgett Monolayers. J Org Chem 2015; 80:10134-50. [DOI: 10.1021/acs.joc.5b01753] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jiří Kaleta
- Institute
of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague, Czech Republic
| | - Eva Kaletová
- Institute
of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague, Czech Republic
| | - Ivana Císařová
- Department
of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Simon J. Teat
- Advanced
Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
| | - Josef Michl
- Institute
of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague, Czech Republic
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
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18
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Cipolloni M, Kaleta J, Mašát M, Dron PI, Shen Y, Zhao K, Rogers CT, Shoemaker RK, Michl J. Time-Resolved Fluorescence Anisotropy of Bicyclo[1.1.1]pentane/Tolane-Based Molecular Rods Included in Tris( o-phenylenedioxy)cyclotriphosphazene (TPP). THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2015; 119:8805-8820. [PMID: 25937858 PMCID: PMC4415047 DOI: 10.1021/acs.jpcc.5b01960] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 03/16/2015] [Indexed: 05/27/2023]
Abstract
We examine the fluorescence anisotropy of rod-shaped guests held inside the channels of tris(o-phenylenedioxy)cyclotriphosphazene (TPP) host nanocrystals, characterized by powder X-ray diffraction and solid state NMR spectroscopy. We address two issues: (i) are light polarization measurements on an aqueous colloidal solution of TPP nanocrystals meaningful, or is depolarization by scattering excessive? (ii) Can measurements of the rotational mobility of the included guests be performed at low enough loading levels to suppress depolarization by intercrystallite energy transfer? We find that meaningful measurements are possible and demonstrate that the long axis of molecular rods included in TPP channels performs negligible vibrational motion.
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Affiliation(s)
- Marco Cipolloni
- Institute of Organic
Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic, Flemingovo
nám. 2, 16610 Prague, Czech Republic
| | - Jiří Kaleta
- Institute of Organic
Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic, Flemingovo
nám. 2, 16610 Prague, Czech Republic
| | - Milan Mašát
- Institute of Organic
Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic, Flemingovo
nám. 2, 16610 Prague, Czech Republic
| | - Paul I. Dron
- Department
of Chemistry and Biochemistry and Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Yongqiang Shen
- Department
of Chemistry and Biochemistry and Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Ke Zhao
- Department
of Chemistry and Biochemistry and Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Charles T. Rogers
- Department
of Chemistry and Biochemistry and Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Richard K. Shoemaker
- Department
of Chemistry and Biochemistry and Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Josef Michl
- Institute of Organic
Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic, Flemingovo
nám. 2, 16610 Prague, Czech Republic
- Department
of Chemistry and Biochemistry and Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
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19
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Kaleta J, Janoušek Z, Nečas M, Mazal C. Molecular Rods Combining o-Carborane and Bicyclo[1.1.1]pentane Cages: An Insertion of the Triple Bond Located Next to a Highly Strained Cage. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Praha, Czech Republic
| | - Zbyněk Janoušek
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Praha, Czech Republic
| | - Marek Nečas
- Department
of Chemistry, Faculty of Science, Masaryk University, Kotlářská
2, 611 37 Brno, Czech Republic
- CEITEC-Central
European Institute of Technology, Masaryk University Brno, Kamenice
5, 625 00 Brno-Bohunice, Czech Republic
| | - Ctibor Mazal
- Department
of Chemistry, Faculty of Science, Masaryk University, Kotlářská
2, 611 37 Brno, Czech Republic
- CEITEC-Central
European Institute of Technology, Masaryk University Brno, Kamenice
5, 625 00 Brno-Bohunice, Czech Republic
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