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Escalera-López D, Garcia-Amorós J, Velasco D. Smectic-B Liquid Single Crystal Elastomers as Efficient Optical Mechanotransducers. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201700550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daniel Escalera-López
- Grup de Materials Orgànics; Institut de Nanociència i Nanotecnologia (IN2UB); Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica); Universitat de Barcelona; Martí i Franquès 1 E-08028 Barcelona Spain
| | - Jaume Garcia-Amorós
- Grup de Materials Orgànics; Institut de Nanociència i Nanotecnologia (IN2UB); Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica); Universitat de Barcelona; Martí i Franquès 1 E-08028 Barcelona Spain
| | - Dolores Velasco
- Grup de Materials Orgànics; Institut de Nanociència i Nanotecnologia (IN2UB); Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica); Universitat de Barcelona; Martí i Franquès 1 E-08028 Barcelona Spain
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2
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Riou O, Lonetti B, Davidson P, Tan RP, Cormary B, Mingotaud AF, Di Cola E, Respaud M, Chaudret B, Soulantica K, Mauzac M. Liquid Crystalline Polymer–Co Nanorod Hybrids: Structural Analysis and Response to a Magnetic Field. J Phys Chem B 2014; 118:3218-25. [DOI: 10.1021/jp410050z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ophélie Riou
- Laboratoire
des Interactions Moléculaires et Réactivité Chimique
et Photochimique, Université de Toulouse, UPS/CNRS, 118 route de
Narbonne, F-31062 Toulouse Cedex 9, France
- Laboratoire
de Physique et Chimie de Nano-Objets, Université de Toulouse, INSA, UPS, LPCNO, CNRS, 135 avenue de Rangueil, F-31077 Toulouse Cedex 9, France
| | - Barbara Lonetti
- Laboratoire
des Interactions Moléculaires et Réactivité Chimique
et Photochimique, Université de Toulouse, UPS/CNRS, 118 route de
Narbonne, F-31062 Toulouse Cedex 9, France
| | - Patrick Davidson
- Laboratoire
de Physique des Solides, UMR 8502 CNRS, Université Paris-Sud, Batiment 510, 91405 Orsay Cedex, France
| | - Reasmey P. Tan
- Laboratoire
de Physique et Chimie de Nano-Objets, Université de Toulouse, INSA, UPS, LPCNO, CNRS, 135 avenue de Rangueil, F-31077 Toulouse Cedex 9, France
| | - Benoit Cormary
- Laboratoire
de Physique et Chimie de Nano-Objets, Université de Toulouse, INSA, UPS, LPCNO, CNRS, 135 avenue de Rangueil, F-31077 Toulouse Cedex 9, France
| | - Anne-Françoise Mingotaud
- Laboratoire
des Interactions Moléculaires et Réactivité Chimique
et Photochimique, Université de Toulouse, UPS/CNRS, 118 route de
Narbonne, F-31062 Toulouse Cedex 9, France
| | - E. Di Cola
- European Synchrotron Radiation Facility−ESRF, F-38043 Grenoble Cedex, France
| | - Marc Respaud
- Laboratoire
de Physique et Chimie de Nano-Objets, Université de Toulouse, INSA, UPS, LPCNO, CNRS, 135 avenue de Rangueil, F-31077 Toulouse Cedex 9, France
| | - Bruno Chaudret
- Laboratoire
de Physique et Chimie de Nano-Objets, Université de Toulouse, INSA, UPS, LPCNO, CNRS, 135 avenue de Rangueil, F-31077 Toulouse Cedex 9, France
| | - Katerina Soulantica
- Laboratoire
de Physique et Chimie de Nano-Objets, Université de Toulouse, INSA, UPS, LPCNO, CNRS, 135 avenue de Rangueil, F-31077 Toulouse Cedex 9, France
| | - Monique Mauzac
- Laboratoire
des Interactions Moléculaires et Réactivité Chimique
et Photochimique, Université de Toulouse, UPS/CNRS, 118 route de
Narbonne, F-31062 Toulouse Cedex 9, France
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3
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Ujiie S, Miyazaki W, Iimura K. Influence of spacer length on liquid crystal microstructures of branched polyethyleneimines with mesogenic pendent groups. Polym J 2012. [DOI: 10.1038/pj.2012.64] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zadoina L, Lonetti B, Soulantica K, Mingotaud AF, Respaud M, Chaudret B, Mauzac M. Liquid crystalline magnetic materials. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b915075g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Gun'ko VM, Turov VV, Zarko VI, Goncharuk EV, Gerashchenko II, Turova AA, Mironyuk IF, Leboda R, Skubiszewska-Zieba J, Janusz W. Comparative characterization of polymethylsiloxane hydrogel and silylated fumed silica and silica gel. J Colloid Interface Sci 2007; 308:142-56. [PMID: 17257612 DOI: 10.1016/j.jcis.2006.12.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2006] [Revised: 11/17/2006] [Accepted: 12/16/2006] [Indexed: 11/26/2022]
Abstract
Polymethylsiloxane (PMS) hydrogel (C(PMS)=10 wt%, soft paste-like hydrogel), diluted aqueous suspensions, and dried/wetted xerogel (powder) were studied in comparison with suspensions and dry powders of unmodified and silylated nanosilicas and silica gels using (1)H NMR, thermally stimulated depolarization current (TSDC), quasielastic light scattering (QELS), rheometry, and adsorption methods. Nanosized primary PMS particles, which are softer and less dense than silica ones because of the presence of CH(3) groups attached to each Si atom and residual silanols, form soft secondary particles (soft paste-like hydrogel) that can be completely decomposed to nanoparticles with sizes smaller than 10 nm on sonication of the aqueous suspensions. Despite the soft character of the secondary particles, the aqueous suspensions of PMS are characterized by a higher viscosity (at concentration C(PMS)=3-5 wt%) than the suspension of fumed silica at a higher concentration. Three types of structured water are observed in dry PMS xerogel (adsorbed water of 3 wt%). These structures, characterized by the chemical shift of the proton resonance at delta(H) approximately 1.7,3.7, and 5 ppm, correspond to weakly associated but strongly bound water and to strongly associated but weakly or strongly bound waters, respectively. NMR cryoporometry and QELS results suggest that PMS is a mesoporous-macroporous material with the textural porosity caused by voids between primary particles forming aggregates and agglomerates of aggregates. PMS is characterized by a much smaller adsorption capacity with respect to proteins (gelatin, ovalbumin) than unmodified fumed silica A-300.
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Affiliation(s)
- V M Gun'ko
- Institute of Surface Chemistry, 17 General Naumov Street, Kiev 03164, Ukraine.
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6
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Richard H, Mauzac M, Nguyen HT, Sigaud G, Achard MF, Hardouin F, Gasparoux H. Synthesis and Properties of Some Liquid Crystalline Polysiloxanes. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/00268948808070359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Sigaud G, Achard MF, Hardouin F, Gasparoux H. Role of Molecular Parameters on the Miscibility of Side-Chain Polymer Solutes. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/00268948808070384] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Hardouin F, Noirez L, Keller P, Lambert M, Moussa F, Pepy G, Richard H. Liquid Crystal Polymers: A Small Angle Neutron Scattering Study. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/00268948808070380] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Palaprat G, Marty JD, Routaboul C, Lattes A, Mingotaud AF, Mauzac M. Study of Hydrogen Bonding in Liquid Crystalline Solvent by Fourier Transform Infrared Spectroscopy. J Phys Chem A 2006; 110:12887-90. [PMID: 17125305 DOI: 10.1021/jp063987l] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A hydrogen-bonded complex between an aromatic acid and an enantiopure chiral amine has been dissolved in a nematic solvent, giving rise to a cholesteric medium. Fourier transform infrared (FT-IR) experiments have been performed at various temperatures on both sides of the cholesteric-isotropic transition. Liquid crystalline order provides significant enhancement to the strength of interaction, inducing a discontinuous jump in concentration of the complex at the cholesteric-isotropic transition.
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Affiliation(s)
- Guillaume Palaprat
- Laboratoire Interactions Moléculaires et Réactivité Chimique et Photochimique, UMR CNRS 5623, Université Paul Sabatier, 31062 Toulouse Cedex 9, France
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10
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Degert C, Richard H, Mauzac M. Polymorphism and Thermoelastic Behavior of Some Crosslinked Mesogenic Polysiloxanes. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259208037292] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Sołtysiak JT, Białecka-Florjańczyk E, Przedmojski J. Liquid crystalline cyclic oligosiloxanes with polar end groups. Eur Polym J 2006. [DOI: 10.1016/j.eurpolymj.2006.01.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Mishra G, Srivastava AK. Side-chain liquid-crystalline polymers with a limonene-co-methyl methacrylate main chain: Synthesis and characterization of polymers with phenyl benzoate mesogenic groups. J Appl Polym Sci 2006. [DOI: 10.1002/app.24130] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Ganicz T, Pakula T, Fortuniak W, Białecka-Florjańczyk E. Linear and hyperbranched liquid crystalline polysiloxanes. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.10.052] [Citation(s) in RCA: 31] [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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14
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Ganicz T, Stańczyk WA. Synthesis of novel tri-podal mesogenic alkenes and side-chain polysiloxanes. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.05.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Girtti F, Félix G, Achard MF, Hardouin F. Laterally attached liquid-crystalline polymers as stationary phases. Effect of temperature in RP HPLC and comparison with a commercial C18 stationary phase. Chromatographia 2002. [DOI: 10.1007/bf02490240] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Gritti F, Sourigues S, Félix G, Achard MF, Hardouin F. Correlation between hydrophobic and molecular shape descriptors and retention data of polycyclic aromatic hydrocarbons in reversed-phase chromatography on non-liquid-crystalline, nematic, and smetic stationary phases. Chromatographia 2002. [DOI: 10.1007/bf02492135] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Gritti F, Terrien I, Menu S, Dufourc EJ, Félix G, Achard MF, Hardouin F. Liquid crystalline polymers as stationary phases. IV. Chemical bonding and immobilization of the polymer on silica characterization by solid-state nuclear magnetic resonance spectroscopy. J Chromatogr A 2001; 922:37-50. [PMID: 11486885 DOI: 10.1016/s0021-9673(01)00886-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chemical bonding reaction and immobilization through low energy radiation (heating) have been investigated to fix a side-chain liquid crystalline polymer (SC-LCP) on silica particles in order to use the resulting modified silica in normal-phase HPLC. Highly stable chromatographic stationary phases are observed under excellent polymer solvent flow conditions (THF) for both methods and better column efficiencies are also exhibited towards PAHs' separation compared to the classical coated stationary phase. The characterization of these new stationary phases and the rationale for improved column stability have been investigated by solid state 13C and 29Si CP/MAS NMR spectroscopy. It is clearly shown that the chemical bonding is achieved by the classical hydrosilylation reaction between PHMS chains and vinyl modified silica. The bonded polymer is likely a copolymer than a homopolymer. The immobilization of the SC-LCP by heating results in the breaking of Si-O-Si bonds of the polysiloxane chain after the attack of the silica surface silanols. Applications to fullerenes and carotenes separation of these bonded stationary phases are compared to the separation power of a classical monomeric C18 stationary phase in NP-HPLC as n-hexane-toluene or methyl-tertiobutyl ether-methanol mixtures.
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Affiliation(s)
- F Gritti
- ENSCPB, Université Bordeaux I-Lab. d'Analyse Chimique par Reconaissance Moleculaire, Pessac Talence, France
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Gritti F, Félix G, Achard MF, Hardouin F. Laterally attached liquid crystalline polymers as stationary phases in reversed-phase high-performance liquid chromatography. V. Study of retention mechanism using linear solvation energy relationships. J Chromatogr A 2001; 922:51-61. [PMID: 11486891 DOI: 10.1016/s0021-9673(01)00887-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A linear solvation energy relationship model was used to characterize the retention behavior of a stationary phase based upon a nematic side-on liquid crystalline polymer (SOLCP) in reversed-phase liquid chromatography. The set of solutes was constituted of a high variety of compounds whose molecular sizes were considerably smaller than the mesogenic unit size. The results showed good statistical fits for these retention data in 65:35, 75:25 and 85:15 (v/v) methanol-water mobile phases. Both the cavity term and excess molar refraction are the most important favorable retention-governing parameters, whereas the solute hydrogen bond acceptor basicity is the most unfavorable retention parameter. Hydrophobicity and pi-pi interactions decrease strongly when the percentage of methanol increases, leading to an important retention decrease despite the fact that the hydrogen bond interaction weakens as the organic solvent is added. The shape recognition ability of this side-on liquid crystalline stationary phase on polycyclic aromatic hydrocarbon solutes is partly explained by the solutes' high polarizability due to the presence of pi-electrons. However, the solute polarizability is not sufficient and a stationary phase's "structure effect" must to be taken into account for the shape discrimination observed. The strong interaction between liquid crystal molecules caused likely a adsorption retention mechanism rather than a partition mechanism.
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Affiliation(s)
- F Gritti
- ENSCPB, Université Bordeaux I, Talence, France
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19
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Chauhan BPS, Ready TE, AL-Badri Z, Boudjouk P. A Catalytic Route to Grafted Silicones. Organometallics 2001. [DOI: 10.1021/om000339u] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bhanu P. S. Chauhan
- Center for Main Group Chemistry, Department of Chemistry, North Dakota State University, Fargo, North Dakota 58105
| | - Thomas E. Ready
- Center for Main Group Chemistry, Department of Chemistry, North Dakota State University, Fargo, North Dakota 58105
| | - Zoha AL-Badri
- Center for Main Group Chemistry, Department of Chemistry, North Dakota State University, Fargo, North Dakota 58105
| | - Philip Boudjouk
- Center for Main Group Chemistry, Department of Chemistry, North Dakota State University, Fargo, North Dakota 58105
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Gritti F, Félix G, Achard MF, Hardouin F. Laterally attached liquid-crystalline polymers as stationary phases in reversed-phase high-performance liquid chromatography. J Chromatogr A 2001; 913:147-57. [PMID: 11355807 DOI: 10.1016/s0021-9673(00)01091-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Specific stationary phases based upon non-liquid-crystalline polymers, liquid-crystalline molecules and side-on fixed liquid-crystalline polymers (SO-LCP) have been synthesized for use as silica modified stationary phases in high-performance liquid chromatography (HPLC). The mesogenic side group of the SO-LCP was composed of three phenyl ring benzoate type with terminal alkoxy chains and was laterally linked to a polysiloxane backbone via an alkyl ester spacer arm. This study demonstrated that the shape recognition of stationary phases based upon SO-LCP towards the length-to-breath ratio (L/B) was strongly connected to the existence of a local liquid-crystalline order into the pores of silica gel, warranting the interest of the collective organization of mesomorphic materials in liquid chromatography. Furthermore, the chromatographic performances depended on the kind of anisotropic order and it was more advantageous to use smectic side-on liquid-crystalline polymer than nematic and obviously non-liquid-crystalline ones. Finally, for a series of polymers having the same mesomorphism, the larger the temperature stability range of the mesophase, the more pronounced the local order effect and the higher the shape recognition.
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Affiliation(s)
- F Gritti
- ENSCPB Université Bordeaux I, Talence, France
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Gritti F, Félix G, Achard MF, Hardouin F. Laterally attached liquid crystalline polymers as stationary phases in reversed-phase high-performance liquid chromatography. II. Optimization of the molecular parameter of the polymer. J Chromatogr A 2000; 897:131-43. [PMID: 11128196 DOI: 10.1016/s0021-9673(00)00765-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Stationary phases obtained by coating side-chain liquid crystalline polymers (LCPs) with the mesogenic rod like units laterally attached to a polysiloxane backbone via a flexible spacer have been already reported. These phases show excellent planarity and shape recognition for polynuclear aromatic hydrocarbon (PAH) solutes in reversed-phase liquid chromatography. Optimization of these stationary phases in terms of molecular parameters of the polymer is here described. Fifteen stationary phases have been prepared varying different parameters such as the spacer length, the aliphatic tail length, and the proportion of laterally attached mesogenic units along the polymer chain. The results show that the combination of a long spacer and long terminal chains, which generates a smectic phase in the polymer bulk, leads to the best chromatographic performances towards planarity and shape recognition for PAH solutes.
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Affiliation(s)
- F Gritti
- ENSCPB Université Bordeaux I, B.P. 108, Talence, France
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22
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Gritti F, Félix G, Achard MF, Hardouin F. Investigation of the nematic-isotropic transition of a liquid crystalline polymer and determination of molecular diffusion coefficients using gas chromatography. J Chromatogr A 2000; 893:359-66. [PMID: 11073304 DOI: 10.1016/s0021-9673(00)00772-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inverse gas chromatography has been used to study the nematic-isotropic transition of a side chain liquid crystalline polymer (LCP). The mesogenic side groups are laterally attached to a polysiloxane backbone through a flexible spacer. The nematic-isotropic transition of this LCP coated onto a glass capillary column is detected by considering the variation with temperature of the retention volume and of the theoretical plate number for the several probes. The molecular diffusion coefficients, D, of naphthalene, fluorene, pyrene and o-terphenyl have been determined at different temperatures in the nematic phase of the LCP as well as in the isotropic melt. The values ranged between 10(-14) and 10(-12) m2 s(-1) for the polynuclear aromatic hydrocarbon probes tested.
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23
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Kowalewska A, Lickiss PD, Lucas R, Stańczyk WA. Reactions of the SiH bonds in tetrakis(dimethylsilyl)methane and silane. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(99)00653-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Marty JD, Tizra M, Mauzac M, Rico-Lattes I, Lattes A. New Molecular Imprinting Materials: Liquid Crystalline Networks. Macromolecules 1999. [DOI: 10.1021/ma990592+] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Affiliation(s)
- Jean Jacques Zanna
- Centre de Recherche Paul Pascal, CNRS, Domaine Universitaire, Avenue Schweitzer, 33600 Pessac, France; Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique,U.M.R. CNRS, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cédex 4, France; and Laboratoire Léon Brillouin, CEA/CNRS Saclay, 91191 Gif-sur-Yvette Cédex, France
| | - Monique Mauzac
- Centre de Recherche Paul Pascal, CNRS, Domaine Universitaire, Avenue Schweitzer, 33600 Pessac, France; Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique,U.M.R. CNRS, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cédex 4, France; and Laboratoire Léon Brillouin, CEA/CNRS Saclay, 91191 Gif-sur-Yvette Cédex, France
| | - François Boué
- Centre de Recherche Paul Pascal, CNRS, Domaine Universitaire, Avenue Schweitzer, 33600 Pessac, France; Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique,U.M.R. CNRS, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cédex 4, France; and Laboratoire Léon Brillouin, CEA/CNRS Saclay, 91191 Gif-sur-Yvette Cédex, France
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26
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Terrien I, Achard M, Félix G, Hardouin F. Thermotropic laterally attached liquid crystalline polymers. J Chromatogr A 1998. [DOI: 10.1016/s0021-9673(98)00198-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Synthesis and characterization of liquid crystal polycarbosilanes: poly(1-methyl-1-silaethylene), poly(1-methyl-1-silabutane) and poly(1-silabutane) with pendant mesogenic groups. POLYMER 1996. [DOI: 10.1016/0032-3861(96)00278-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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29
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Phase Behavior of High- and Low-Molar-Mass Liquid Crystal Mixtures. ACTA ACUST UNITED AC 1994. [DOI: 10.1007/978-1-4613-8333-8_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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30
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The effect of the molecular weight on the electro-optic properties of methacrylate-based side-chain liquid crystal polymers. POLYMER 1993. [DOI: 10.1016/0032-3861(93)90731-o] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Ujiie S, Tanaka Y, Iimura K. Thermotropic Liquid-Crystalline Copolymers Containing Ionic Group. CHEM LETT 1991. [DOI: 10.1246/cl.1991.1037] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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32
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Casquilho JP, Esnault P, Volino F, Mauzac M, Richard H. Viscoelastic Parameters of a Side-Chain Nematic Polymer: I—Results of a Proton NMR Study. ACTA ACUST UNITED AC 1990. [DOI: 10.1080/00268949008042216] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Achard M, Mauzac M, Richard H, Sigaud G, Hardouin F. Changes in the mesogenic properties of siloxane copolymers and polysiloxane blends. Eur Polym J 1989. [DOI: 10.1016/0014-3057(89)90011-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Davidson P, Levelut A. Mesomorphic side chain polysiloxanes : a structural study of the smectic B phase. ACTA ACUST UNITED AC 1989. [DOI: 10.1051/jphys:0198900500170241500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Keller EN, Halfon R, Nachaliel E, Davidov D, Zimmermann H. High-resolution x-ray measurements of the nematic-smectic-A transition in the polymeric liquid crystal P4.1 polysiloxane. PHYSICAL REVIEW LETTERS 1988; 61:1206-1209. [PMID: 10038729 DOI: 10.1103/physrevlett.61.1206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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de Marignan G, Teyssié D, Boileau S, Malthête J, Noël C. Liquid crystalline side-chain polymers. 1. Polysiloxanes with a carbonate group in the spacer. POLYMER 1988. [DOI: 10.1016/0032-3861(88)90063-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Keller P. Synthesis and Properties of new Liquid Crystalline Side-Chain Polysiloxanes. ACTA ACUST UNITED AC 1988. [DOI: 10.1080/00268948808080233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rieger J. Conformation of liquid crystal side chain polymers in the smectic phase : models for anisotropic random walks. ACTA ACUST UNITED AC 1988. [DOI: 10.1051/jphys:019880049090161500] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Moussa F, Cotton J, Hardouin F, Keller P, Lambert M, Pépy G, Mauzac M, Richard H. Conformational anisotropy of liquid crystalline side chain polymers : a small angle neutron scattering study. ACTA ACUST UNITED AC 1987. [DOI: 10.1051/jphys:019870048070107900] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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