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El Haitami A, Resmerita AM, Fichet O, Cantin S, Aubert PH, Farcas A. Synthesis, Photophysics, and Langmuir Films of Polyfluorene/Permodified Cyclodextrin Polyrotaxanes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11406-11413. [PMID: 34528811 DOI: 10.1021/acs.langmuir.1c02014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In the present study, we investigated the effect of permodified 2,3,6-tri-O-trimethylsilyl β- and γ-cyclodextrin (TMS·β-CD, TMS·γ-CD) encapsulation on the optical, electrochemical, morphological, and supramolecular arrangements of a poly[2,7'-(9,9-dioctylfluorene-alt-2',7-fluorene)] PF copolymer. For this purpose, the photophysical properties and Langmuir monolayer formation of PF·TMS·β-CD and PF·TMS·γ-CD polyrotaxanes were investigated and compared with those of the reference PF. Surface pressure-area isotherms and Brewster angle microscopy studies indicated the capability of both polyrotaxanes to organize into larger and homogeneous 2D supramolecular assemblies at the air-water interface. The obtained results suggest that the presence of the surrounding TMS·β-CD and TMS·γ-CD macrocycles on the PF backbones leads to changes in the conformation and hydrophobicity of the film surfaces. Our investigation offers a method to assess the impact of TMS-CD encapsulation on the control of 2D monolayer formation, with particular attention on the generation of stable PF monolayers for organic electronic devices.
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Affiliation(s)
| | | | | | | | | | - Aurica Farcas
- "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iasi, Romania
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Farcas A, Assaf KI, Resmerita AM, Cantin S, Balan M, Aubert PH, Nau WM. Cucurbit[7]uril-based fluorene polyrotaxanes. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.08.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Farcas A, Tregnago G, Resmerita AM, Aubert PH, Cacialli F. Synthesis and photophysical characteristics of polyfluorene polyrotaxanes. Beilstein J Org Chem 2015; 11:2677-88. [PMID: 26877789 PMCID: PMC4734422 DOI: 10.3762/bjoc.11.288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/04/2015] [Indexed: 11/23/2022] Open
Abstract
Two alternating polyfluorene polyrotaxanes (3·TM-βCD and 3·TM-γCD) have been synthesized by the coupling of 2,7-dibromofluorene encapsulated into 2,3,6-tri-O-methyl-β- or γ-cyclodextrin (TM-βCD, TM-γCD) cavities with 9,9-dioctylfluorene-2,7-diboronic acid bis(1,3-propanediol) ester. Their optical, electrochemical and morphological properties have been evaluated and compared to those of the non-rotaxane counterpart 3. The influence of TM-βCD or TM-γCD encapsulation on the thermal stability, solubility in common organic solvents, film forming ability was also investigated. Polyrotaxane 3·TM-βCD exhibits a hypsochromic shift, while 3·TM-γCD displays a bathochromic with respect to the non-rotaxane 3 counterpart. For the diluted CHCl3 solutions the fluorescence lifetimes of all compounds follow a mono-exponential decay with a time constant of ≈0.6 ns. At higher concentration the fluorescence decay remains mono-exponential for 3·TM-βCD and polymers 3, with a lifetime τ = 0.7 ns and 0.8 ns, whereas the 3·TM-γCD polyrotaxane shows a bi-exponential decay consisting of a main component (with a weight of 98% of the total luminescence) with a relatively short decay constant of τ1 = 0.7 ns and a minor component with a longer lifetime of τ2 = 5.4 ns (2%). The electrochemical band gap (ΔEg) of 3·TM-βCD polyrotaxane is smaller than that of 3·TM-γCD and 3, respectively. The lower ΔEg value for 3·TM-βCD suggests that the encapsulation has a greater effect on the reduction process, which affects the LUMO energy level value. Based on AFM analysis, 3·TM-βCD and 3·TM-γCD polyrotaxane compounds exhibit a granular morphology with lower dispersity and smaller roughness exponent of the film surfaces in comparison with those of the neat copolymer 3.
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Affiliation(s)
- Aurica Farcas
- Supramolecular Chemistry Group, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487-Iasi, Romania
| | - Giulia Tregnago
- London Centre for Nanotechnology and Department of Physics and Astronomy University College London, Gower Street, London WC1E 6BT, UK
| | - Ana-Maria Resmerita
- Supramolecular Chemistry Group, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487-Iasi, Romania
| | - Pierre-Henri Aubert
- Laboratoire de Physicochimie des Polymères et des Interfaces (EA 2528), Institut des Matériaux, Université de Cergy-Pontoise, F-95031 Cergy-Pontoise Cedex, France
| | - Franco Cacialli
- London Centre for Nanotechnology and Department of Physics and Astronomy University College London, Gower Street, London WC1E 6BT, UK
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Farcas A, Aubert PH, Mohanty J, Lazar AI, Cantin S, Nau WM. Molecular wire formation from poly[2,7-(9,9-dioctylfluorene)-alt-(5,5′-bithiophene/cucurbit[7]uril)] polyrotaxane copolymer. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Farcas A, Resmerita AM, Aubert PH, Farcas F, Stoica I, Airinei A. The effect of permodified cyclodextrins encapsulation on the photophysical properties of a polyfluorene with randomly distributed electron-donor and rotaxane electron-acceptor units. Beilstein J Org Chem 2014; 10:2145-56. [PMID: 25246973 PMCID: PMC4168896 DOI: 10.3762/bjoc.10.222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 08/19/2014] [Indexed: 11/23/2022] Open
Abstract
We report on the synthesis as well as the optical, electrochemical and morphological properties of two polyrotaxanes (4a and 4b), which consist of electron-accepting 9,9-dicyanomethylenefluorene 1 as an inclusion complex in persilylated β- or γ-cyclodextrin (TMS-β-CD, TMS-γ-CD) (1a, 1b) and methyltriphenylamine as an electron-donating molecule. They are statistically distributed into the conjugated chains of 9,9-dioctylfluorene 3 and compared with those of the corresponding non-rotaxane 4 counterpart. Rotaxane formation results in improvements of the solubility, the thermal stability, and the photophysical properties. Polyrotaxanes 4a and 4b exhibited slightly red-shifted absorption bands with respect to the non-rotaxane 4 counterpart. The fluorescence lifetimes of polyrotaxanes follow a mono-exponential decay with a value of τ = 1.14 ns compared with the non-rotaxane, where a bi-exponential decay composed of a main component with a relative short time of τ1 = 0.88 (57.08%) and a minor component with a longer lifetime of τ2 = 1.56 ns (42.92%) were determined. The optical and electrochemical band gaps (ΔEg) as well as the ionization potential and electronic affinity characterized by smaller values compared to the values of any of the constituents. AFM reveals that the film surface of 4a and 4b displays a granular morphology with a lower dispersity supported by a smaller roughness exponent compared with the non-rotaxane counterpart.
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Affiliation(s)
- Aurica Farcas
- Inorganic Polymers, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Ana-Maria Resmerita
- Inorganic Polymers, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Pierre-Henri Aubert
- Laboratoire de Physicochimie des Polymères et des Interfaces (EA 2528), Institut des Matériaux, Université de Cergy-Pontoise, F-95031 Cergy-Pontoise Cedex, France
| | - Flavian Farcas
- "Gh. Asachi" Technical University, 61-63 Mangeron Blvd, 700050 Iasi, Romania
| | - Iuliana Stoica
- Inorganic Polymers, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Anton Airinei
- Inorganic Polymers, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487 Iasi, Romania
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Rajendiran N, Sankaranarayanan RK, Saravanan J. Nanostructures formed by cyclodextrin covered aminobenzophenones through supramolecular self assembly. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 127:52-60. [PMID: 24632156 DOI: 10.1016/j.saa.2014.02.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/26/2014] [Accepted: 02/09/2014] [Indexed: 06/03/2023]
Abstract
Cyclodextrin (α and β) based nanostructures formed with 2-aminobenzophenone, 3-aminobenzophenone through the supramolecular self assembly are studied by absorption, fluorescence, time-resolved fluorescence, SEM, TEM, FT-IR, DSC, PXRD and (1)H NMR. The unequal layer by layer nanosheets and nanoribbons are formed through self assembly of 3ABP/CD inclusion complexes. 2ABP/α-CD complex nanostructures show the self assembly hierarchical thread structure and β-CD complexes displays a nanobrick structure. The formation of nanostructures are prearranged to HO⋯H, NH2⋯O and H2N⋯H intermolecular hydrogen bond between individual complexes. The absorption and fluorescence spectral changes explicit formation of 1:1 inclusion complexes and solvent study demonstrate the ESIPT and TICT present in both molecules. The thermodynamic parameters (ΔH, ΔG and ΔS) of 2ABP and 3ABP molecule and the inclusion complexes were determined from semiempirical PM3 calculations.
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Affiliation(s)
- N Rajendiran
- Department of Chemistry, Annamalai University, Annamalai Nagar 608 002, India.
| | | | - J Saravanan
- Department of Chemistry, Annamalai University, Annamalai Nagar 608 002, India
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Poly[2,7-(9,9-dioctylfluorene)-alt-(5,5′-bithiophene/permethylated β-cyclodextrin) main-chain polyrotaxane: Synthesis, characterization and surface morphology. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2013.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mondjinou YA, McCauliff LA, Kulkarni A, Paul L, Hyun SH, Zhang Z, Wu Z, Wirth M, Storch J, Thompson DH. Synthesis of 2-hydroxypropyl-β-cyclodextrin/pluronic-based polyrotaxanes via heterogeneous reaction as potential Niemann-Pick type C therapeutics. Biomacromolecules 2013; 14:4189-97. [PMID: 24180231 PMCID: PMC4314287 DOI: 10.1021/bm400922a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Five polyrotaxanes were synthesized by threading 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) onto a variety of α,ω-ditriethylenediamino-N-carbamoyl-poly-(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) (Pluronic) triblock copolymers using a two-pot strategy under heterogeneous, nonaqueous conditions. The threaded HP-β-CD units were retained on the pseudopolyrotaxane precursors by end-capping the branched diamine termini with sodium 2,4,6-trinitrobenzene sulfonate. Inclusion of the Pluronic copolymers within the HP-β-CD cavities was more favorable in nonpolar solvents, such as diethyl ether and n-hexane, both of which gave better coverage ratios than polar solvents. (1)H NMR and MALDI-TOF were used to estimate the average molecular weights of the purified polyrotaxane products. A globular morphology of aggregated polyrotaxanes was observed by tapping-mode AFM imaging of dried samples. Treatment of Niemann-Pick C (NPC) type 2-deficient fibroblasts with the polyrotaxane derivatives produced substantial reductions in sterol accumulation, as seen by diminished filipin staining in these cells, suggesting that Pluronic-based polyrotaxanes may be promising vehicles for delivery of HP-β-CD to cells with abnormal cholesterol accumulation.
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Affiliation(s)
- Yawo A. Mondjinou
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Leslie A. McCauliff
- Department of Nutritional Sciences, Rutgers University, 96 Lipman Drive, New Brunswick, New Jersey 08901-8525, United States
| | - Aditya Kulkarni
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Lake Paul
- Discovery Park - Bindley Biosciences Center, Purdue University, 1203 West State Street, West Lafayette, Indiana 47907, United States
| | - Seok-Hee Hyun
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Zhaorui Zhang
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Zhen Wu
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Mary Wirth
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Judith Storch
- Department of Nutritional Sciences, Rutgers University, 96 Lipman Drive, New Brunswick, New Jersey 08901-8525, United States
| | - David H. Thompson
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
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Koyama Y, Matsumura T, Yui T, Ishitani O, Takata T. Fluorescence Control of Boron Enaminoketonate Using a Rotaxane Shuttle. Org Lett 2013; 15:4686-9. [DOI: 10.1021/ol401984j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasuhito Koyama
- Catalysis Research Center, Hokkaido University, N21 W10, Kita-ku, Sapporo 001-0021, Japan, Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 (H-126), Ookayama, Meguro, Tokyo 152-8552, Japan, Department of Material Science and Technology, Faculty of Engineering, Niigata University, Igarashi 2-8050, Niigata 950-2181, Japan, and Department of Chemistry, Tokyo Institute of Technology, 2-12-1 (E1-9), Ookayama, Meguro, Tokyo 152-8551, Japan
| | - Tohru Matsumura
- Catalysis Research Center, Hokkaido University, N21 W10, Kita-ku, Sapporo 001-0021, Japan, Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 (H-126), Ookayama, Meguro, Tokyo 152-8552, Japan, Department of Material Science and Technology, Faculty of Engineering, Niigata University, Igarashi 2-8050, Niigata 950-2181, Japan, and Department of Chemistry, Tokyo Institute of Technology, 2-12-1 (E1-9), Ookayama, Meguro, Tokyo 152-8551, Japan
| | - Tatsuto Yui
- Catalysis Research Center, Hokkaido University, N21 W10, Kita-ku, Sapporo 001-0021, Japan, Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 (H-126), Ookayama, Meguro, Tokyo 152-8552, Japan, Department of Material Science and Technology, Faculty of Engineering, Niigata University, Igarashi 2-8050, Niigata 950-2181, Japan, and Department of Chemistry, Tokyo Institute of Technology, 2-12-1 (E1-9), Ookayama, Meguro, Tokyo 152-8551, Japan
| | - Osamu Ishitani
- Catalysis Research Center, Hokkaido University, N21 W10, Kita-ku, Sapporo 001-0021, Japan, Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 (H-126), Ookayama, Meguro, Tokyo 152-8552, Japan, Department of Material Science and Technology, Faculty of Engineering, Niigata University, Igarashi 2-8050, Niigata 950-2181, Japan, and Department of Chemistry, Tokyo Institute of Technology, 2-12-1 (E1-9), Ookayama, Meguro, Tokyo 152-8551, Japan
| | - Toshikazu Takata
- Catalysis Research Center, Hokkaido University, N21 W10, Kita-ku, Sapporo 001-0021, Japan, Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 (H-126), Ookayama, Meguro, Tokyo 152-8552, Japan, Department of Material Science and Technology, Faculty of Engineering, Niigata University, Igarashi 2-8050, Niigata 950-2181, Japan, and Department of Chemistry, Tokyo Institute of Technology, 2-12-1 (E1-9), Ookayama, Meguro, Tokyo 152-8551, Japan
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Siripornnoppakhun W, Niamnont N, Krumsri A, Tumcharern G, Vilaivan T, Rashatasakhon P, Thayumanavan S, Sukwattanasinitt M. Inclusion Complexes between Amphiphilic Phenyleneethynylene Fluorophores and Cyclodextrins in Aqueous Media. J Phys Chem B 2012; 116:12268-74. [DOI: 10.1021/jp3057652] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | - Nakorn Niamnont
- Department
of Chemistry, Faculty
of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
| | - Akachai Krumsri
- Department of Chemistry, Faculty
of Science, Chulalongkorn University, Bangkok
10330, Thailand
| | - Gamolwan Tumcharern
- Thailand National Nanotechnology
Center, National Science and Technology Development Agency, Patumthanee 12120, Thailand
| | - Tirayut Vilaivan
- Department of Chemistry, Faculty
of Science, Chulalongkorn University, Bangkok
10330, Thailand
| | - Paitoon Rashatasakhon
- Department of Chemistry, Faculty
of Science, Chulalongkorn University, Bangkok
10330, Thailand
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts at Amherst, Amherst, Massachusetts
01003, United States
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Formation and Characterization of Stable Fluorescent Complexes Between Neutral Conjugated Polymers and Cyclodextrins. J Fluoresc 2012; 23:171-80. [DOI: 10.1007/s10895-012-1130-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 09/10/2012] [Indexed: 11/27/2022]
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Farcas A, Resmerita AM, Stefanache A, Balan M, Harabagiu V. Synthesis and characterization of low-molecular-weight π-conjugated polymers covered by persilylated β-cyclodextrin. Beilstein J Org Chem 2012; 8:1505-14. [PMID: 23019485 PMCID: PMC3458775 DOI: 10.3762/bjoc.8.170] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 08/13/2012] [Indexed: 11/29/2022] Open
Abstract
The paper reports the preparation of a poly[2,7-(9,9-dioctylfluorene)-alt-5,5'-bithiophene/PS-βCD] (PDOF-BTc) polyrotaxane copolymer, through a Suzuki coupling reaction between the 5,5'-dibromo-2,2'-bithiophene (BT) inclusion complex with persilylated β-cyclodextrin (PS-βCD), and 9,9-dioctylfluorene-2,7-bis(trimethylene borate) (DOF) as the blocking group. The chemical structure and the thermal and morphological properties of the resulting polyrotaxane were investigated by using NMR and FT-IR spectroscopy, TGA, DSC and AFM analysis. The encapsulation of BT inside the PS-βCD cavity results in improvements in the solubility, as well as in different surface morphology and thermal properties of the PDOF-BTc rotaxane copolymer compared to its noncomplexed PDOF-BT homologue. In contrast, the number-average molecular weight (Mn) of PDOF-BTc rotaxane copolymer indicated lower values suggesting that the condensation reaction is subjected to steric effects of the bulkier silylated groups, affecting the ability of the diborate groups from the DOF molecule to partially penetrate the PS-βCD cavity.
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Affiliation(s)
- Aurica Farcas
- Inorganic Polymers, ''Petru Poni'' Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 700487-Iasi, Romania
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Farcas A, Ghosh I, Nau WM. Effect of α-cyclodextrin on the optical and surface-morphological properties of pyrene–triazole azomethine oligomers. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.03.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Thermal analysis and theoretical study of α-cyclodextrin azomethine [2]-rotaxane formation by semi-empirical method PM3. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.08.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Farcas A, Stoica I, Stefanache A, Peptu C, Farcas F, Marangoci N, Sacarescu L, Harabagiu V, Guégan P. Surface properties of conjugated main-chain polyrotaxanes. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.04.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Farcas A, Ghosh I, Grigoras VC, Stoica I, Peptu C, Nau WM. Effect of Rotaxane Formation on the Photophysical, Morphological, and Adhesion Properties of Poly[2,7-(9,9-dioctylfluorene)-alt
-(5,5'-bithiophene)] Main-Chain Polyrotaxanes. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201000727] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Farcas A, Jarroux N, Ghosh I, Guégan P, Nau WM, Harabagiu V. Polyrotaxanes of Pyrene-Triazole Conjugated Azomethine and α
-Cyclodextrin with High Fluorescence Properties. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900140] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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