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de Souza RF, Zannoni C. Rotational diffusion of shape switching particles in nematic liquid crystals. Phys Rev E 2017; 94:062702. [PMID: 28085296 DOI: 10.1103/physreve.94.062702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/07/2022]
Abstract
The theory of rotational diffusion of particles of various symmetry embedded in a liquid crystal host, essential to interpret a variety of spectroscopic observables, has been available for some time, but only for the case of rigid molecules. Here we generalize the treatment and present a theory to describe the rotational diffusion of shape-changing particles dispersed in nematic liquid crystals. The interaction of the particles with the environment is modeled by an effective field potential, while the particles are allowed to assume an arbitrary discrete number of shapes. The transition between shapes is modeled by a Markovian process which is combined with rotational diffusion. Our model is applied to the simple case of a particle that can exchange between three shapes: a rod, a disk, and a sphere. We consider in detail the effect of shape transitions in some selected correlation functions which are relevant for experiments.
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Affiliation(s)
- R F de Souza
- Dipartimento di Chimica Industriale "Toso Montanari" and INSTM, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy.,CAPES Foundation, Ministry of Education of Brazil, Brasília, DF 70040-020, Brazil
| | - C Zannoni
- Dipartimento di Chimica Industriale "Toso Montanari" and INSTM, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
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2
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Vitek M, Muševič I. Nanosecond control and optical pulse shaping by stimulated emission depletion in a liquid crystal. OPTICS EXPRESS 2015; 23:16921-16932. [PMID: 26191703 DOI: 10.1364/oe.23.016921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We study anisotropic Stimulated Emission Depletion (STED) from dye molecules, which are collectively ordered in a host liquid crystal. Due to the ordering of fluorescent emitters, the STED efficiency depends on the polarization of the depletion beam and time-delay of the STED pulse. The depletion efficiency is highest at lower temperatures in the highly ordered smectic-A phase and deteriorates in the higher temperature nematic and isotropic phases. We demonstrate by temporal tuning of STED that it is possible to generate an arbitrary sequence of nanosecond fluorescent pulses with variable width and variable delay. Our results show that the STED mechanism in principle allows for very fast (GHz) and efficient control of light by light, which could in the future be used for all-optical control of the flow of light in photonic microdevices based on liquid crystals. Using STED anisotropy and time-control, new modalities of STED imaging in liquid crystals could be developed.
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Nishida J, Fayer MD. Theory of third-order spectroscopic methods to extract detailed molecular orientational dynamics for planar surfaces and other uniaxial systems. J Chem Phys 2014; 140:144702. [DOI: 10.1063/1.4870436] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Catalano D, Forte C, Veracini CA, Zannoni C. The Orientational Ordering of Some Non-cylindrically Symmetric Solutes in Nematic Solvents. Isr J Chem 2013. [DOI: 10.1002/ijch.198300041] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Roscioni OM, Muccioli L, Della Valle RG, Pizzirusso A, Ricci M, Zannoni C. Predicting the anchoring of liquid crystals at a solid surface: 5-cyanobiphenyl on cristobalite and glassy silica surfaces of increasing roughness. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8950-8. [PMID: 23597166 DOI: 10.1021/la400857s] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We employ atomistic molecular dynamics simulations to predict the alignment and anchoring strength of a typical nematic liquid crystal, 4-n-pentyl-4'-cyano biphenyl (5CB), on different forms of silica. In particular, we study a thin (~20 nm) film of 5CB supported on surfaces of crystalline (cristobalite) and amorphous silica of different roughness. We find that the orientational order at the surface and the anchoring strength depend on the morphology of the silica surface and its roughness. Cristobalite yields a uniform planar orientation and increases the order at the surface with respect to the bulk whereas amorphous glass has a disordering effect. Despite the low order at the amorphous surfaces, a planar orientation is established with a persistence length into the film higher than the one obtained for cristobalite.
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Affiliation(s)
- Otello Maria Roscioni
- Diartimento di Chimica Industriale Toso Montanari and INSTM, Università di Bologna, Bologna, Italy
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6
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Wolarz E, Mykowska E, Adamski A. Spectral properties and orientational order of tetrafluoro-pentenyl-perylene dye in uniformly aligned liquid-crystalline films. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.01.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Papadopoulos TA, Muccioli L, Athanasopoulos S, Walker AB, Zannoni C, Beljonne D. Does supramolecular ordering influence exciton transport in conjugated systems? Insight from atomistic simulations. Chem Sci 2011. [DOI: 10.1039/c0sc00467g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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8
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Moryson H, Kozłowski K, Bauman D. Study of Orientational Order in Uniaxial Liquid Crystal Phases by Means of Optical Spectroscopy Methods. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259908047544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Hanka Moryson
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
| | - Krzysztof Kozłowski
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
| | - Danuta Bauman
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
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Bauman D, Chrzumnicka E, Wolarz E. Molecular Orientation in Liquid Crystalline Side Chain Polymers Doped with Dichroic Dye as Studied by Optical Spectroscopy Methods. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587250008023162] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Danuta Bauman
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
| | - Ewa Chrzumnicka
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
| | - Eryk Wolarz
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
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10
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Yakovenko SY, Kroemer G, Geiger A. Short-Time Molecular Orientational Dynamics of PCH5. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259608034064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Ye. Yakovenko
- a Institute of Applied Physics Problems , Kurchatova 7, Minsk , 220064 , Republic of Belarus
| | - G. Kroemer
- b Institute of Physical Chemistry, Dortmund University , Otto-Hahn-Strasse 6, D-44221 , Dortmund , Federal Republic of Germany
| | - A. Geiger
- b Institute of Physical Chemistry, Dortmund University , Otto-Hahn-Strasse 6, D-44221 , Dortmund , Federal Republic of Germany
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11
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Bauman D, Mykowska E, Wolarz E. Molecular Orientation of Perylene-Like Dyes in Liquid Crystal 80CB. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259808025100] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Danuta Bauman
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
| | - Ewa Mykowska
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
| | - Eryk Wolarz
- a Institute of Physics, Poznań University of Technology , Piotrowo 3, 60-965 , Poznań , Poland
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Lettinga MP, Koenderink GH, Kuipers BWM, Bessels E, Philipse AP. Rotational dynamics of colloidal spheres probed with fluorescence recovery after photobleaching. J Chem Phys 2006; 120:4517-29. [PMID: 15268620 DOI: 10.1063/1.1644799] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report a polarized fluorescence recovery after photobleaching (pFRAP) method to measure the rotational dynamics of fluorescent colloids over a wide dynamic range. The method is based on the polarization anisotropy in the fluorescence intensity, generated by bleaching of fluorescently labeled particles with an intense pulse of linearly polarized laser light. The rotational mobilities of the fluorescent particles can be extracted from the relaxation kinetics of the postbleach fluorescence polarization anisotropy. Our pFRAP setup has access to correlation times over a range of time scales from tens of microseconds to tens of seconds, and is highly sensitive, so very low concentrations of labeled particles can be probed. We present a detailed description of the theoretical background of pFRAP. The performance of the equipment is demonstrated for fluorescent colloidal silica spheres, dispersed in pure solvents as well as in fd-virus suspensions.
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Affiliation(s)
- M P Lettinga
- Teilinstitut Weiche Materie, Institut fur Festkorperforschung, Forschungszentrum Julich, D-52425 Julich, Germany.
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15
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Bauman D, Chrzumnicka E, Mykowska E, Szybowicz M, Grzelczak N. Study of orientational order of some nematogenic compounds by spectroscopy methods using linearly polarized light. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.11.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Ghiggino KP, Roberts AJ, Phillips D. Time-resolved fluorescence techniques in polymer and biopolymer studies. ADVANCES IN POLYMER SCIENCE 2005. [DOI: 10.1007/3-540-10550-6_2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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17
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Kawai T, Yoshihara S, Iwata Y, Fukaminato T, Irie M. Anisotropic Translational Diffusion of Single Fluorescent Perylene Molecules in a Nematic Liquid Crystal. Chemphyschem 2004; 5:1606-9. [PMID: 15535563 DOI: 10.1002/cphc.200400072] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tsuyoshi Kawai
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
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18
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Bur AJ, Roth SC. Real-time monitoring of fluorescence anisotropy and temperature during processing of biaxially stretched polypropylene film. POLYM ENG SCI 2004. [DOI: 10.1002/pen.20072] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Bur AJ, Roth SC. Fluorescence temperature measurements: Methodology for applications to process monitoring. POLYM ENG SCI 2004. [DOI: 10.1002/pen.20081] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Arcioni A, Tarroni R, Zannoni C. A theory of fluorescence depolarization in mesophases with tilted distribution of directors. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)01416-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Bacchiocchi C, Brunelli M, Zannoni C. Energy transfer and orientational dynamics in isotropic and nematic phases. A computer simulation approach. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)00134-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Polimeno A, Saielli G, Nordio PL. A diffusive model for interpreting solvation dynamics in isotropic and ordered liquid phases. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00076-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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23
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Arcioni A, van Zandvoort MAMJ, Bartolini P, Torre R, Tarroni R, Righini R, Zannoni C. Effective Shape and Dynamics of Chlorophyll a in a Nematic Liquid Crystal. J Phys Chem B 1998. [DOI: 10.1021/jp9726504] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alberto Arcioni
- Dipartimento di Chimica Fisica e Inorganica, Università degli Studi di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy, LENS (European Laboratory for Non-linear Spectroscopy), Università, Largo E. Fermi 2, I-50125 Firenze, Italy, and Dipartimento di Chimica, Università, Via G. Capponi 9, I-50121 Firenze, Italy
| | - Marc A. M. J. van Zandvoort
- Dipartimento di Chimica Fisica e Inorganica, Università degli Studi di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy, LENS (European Laboratory for Non-linear Spectroscopy), Università, Largo E. Fermi 2, I-50125 Firenze, Italy, and Dipartimento di Chimica, Università, Via G. Capponi 9, I-50121 Firenze, Italy
| | - Paolo Bartolini
- Dipartimento di Chimica Fisica e Inorganica, Università degli Studi di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy, LENS (European Laboratory for Non-linear Spectroscopy), Università, Largo E. Fermi 2, I-50125 Firenze, Italy, and Dipartimento di Chimica, Università, Via G. Capponi 9, I-50121 Firenze, Italy
| | - Renato Torre
- Dipartimento di Chimica Fisica e Inorganica, Università degli Studi di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy, LENS (European Laboratory for Non-linear Spectroscopy), Università, Largo E. Fermi 2, I-50125 Firenze, Italy, and Dipartimento di Chimica, Università, Via G. Capponi 9, I-50121 Firenze, Italy
| | - Riccardo Tarroni
- Dipartimento di Chimica Fisica e Inorganica, Università degli Studi di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy, LENS (European Laboratory for Non-linear Spectroscopy), Università, Largo E. Fermi 2, I-50125 Firenze, Italy, and Dipartimento di Chimica, Università, Via G. Capponi 9, I-50121 Firenze, Italy
| | - Roberto Righini
- Dipartimento di Chimica Fisica e Inorganica, Università degli Studi di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy, LENS (European Laboratory for Non-linear Spectroscopy), Università, Largo E. Fermi 2, I-50125 Firenze, Italy, and Dipartimento di Chimica, Università, Via G. Capponi 9, I-50121 Firenze, Italy
| | - Claudio Zannoni
- Dipartimento di Chimica Fisica e Inorganica, Università degli Studi di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy, LENS (European Laboratory for Non-linear Spectroscopy), Università, Largo E. Fermi 2, I-50125 Firenze, Italy, and Dipartimento di Chimica, Università, Via G. Capponi 9, I-50121 Firenze, Italy
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24
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Bacchiocchi C, Zannoni C. Energy transfer in condensed systems The effect of phase organization. Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)00215-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Song Q, Harms GS, Johnson CK. Chromophore Reorientation Relative to the Membrane Plane Detected by Time-Resolved Linear Dichroism during the Bacteriorhodopsin Photocycle in Oriented Purple Membrane. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp961015f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qin Song
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045
| | - Greg S. Harms
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045
| | - Carey K. Johnson
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045
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26
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Yakovenko S, Muravski A, Krömer G, Geiger A. Molecular orientational motion in PCH5: computer simulations and models. Mol Phys 1995. [DOI: 10.1080/00268979500102611] [Citation(s) in RCA: 7] [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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27
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28
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Long-lived fluorescence probes for studying lipid dynamics: A review. J Fluoresc 1995; 5:9-18. [DOI: 10.1007/bf00718778] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/1994] [Revised: 11/07/1994] [Accepted: 11/07/1994] [Indexed: 11/25/2022]
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29
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30
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Dong RY, Shen X. Director fluctuations and anisotropic reorientation of a liquid crystal: A deuterium NMR study. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1994; 49:538-544. [PMID: 9961244 DOI: 10.1103/physreve.49.538] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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31
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Berggren E, Tarroni R, Zannoni C. Rotational diffusion of uniaxial probes in biaxial liquid crystal phases. J Chem Phys 1993. [DOI: 10.1063/1.465912] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Kawski A. Fluorescence Anisotropy: Theory and Applications of Rotational Depolarization. Crit Rev Anal Chem 1993. [DOI: 10.1080/10408349308051654] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Tarroni R, Zannoni C. On the rotational diffusion of asymmetric molecules in liquid crystals. J Chem Phys 1991. [DOI: 10.1063/1.461833] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Dong RY. Model for spin relaxation by correlated internal motions in liquid crystals. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 43:4310-4319. [PMID: 9905533 DOI: 10.1103/physreva.43.4310] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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35
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Fisz J. Fluorescence depolarization of solutions and ordered systems. Photochemical reactions in the excited states. I. General considerations. Chem Phys 1991. [DOI: 10.1016/0301-0104(91)80130-a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Dong RY. Anisotropic reorientation in 4-n-alkyloxybenzylidene-4'-n-alkylanilines by deuterium NMR relaxation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:858-864. [PMID: 9904099 DOI: 10.1103/physreva.42.858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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37
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A fluorescence depolarization study of the order and dynamics of 1,8-diphenyloctatetraene in a nematic liquid crystal. Chem Phys 1990. [DOI: 10.1016/0301-0104(90)89104-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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38
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Johansson LBÅ, Sundström V. A new approach to fluorescence anisotropy studies of LB films and membranes. Chem Phys Lett 1990. [DOI: 10.1016/0009-2614(90)85018-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chandani ADL, Kobinata S. Orientational Characteristics ofnCB(n=5,6,7) Liquid Crystals by Means of Fluorescence Probe Method. ACTA ACUST UNITED AC 1989. [DOI: 10.1080/00268948908042151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Fisz J. Fluorescence depolarization in macroscopically ordered uniaxial molecular samples. II. The ground- and excited-state interactions of fluorophores with ordered environment. A discussion of the published experimental data. Chem Phys 1989. [DOI: 10.1016/0301-0104(89)80026-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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42
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Van Langen H, Van Ginkel G, Levine YK. On the model-independent determination of 〈P4〉 from time- and angle-resolved fluorescence depolarization on macroscopically oriented lipid multibilayer systems. Chem Phys 1989. [DOI: 10.1016/0301-0104(89)87056-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Dozov I, Kirov N. Macroscopic anisotropy of the molecular reorientational dynamics in nematic liquid crystals. J Chem Phys 1989. [DOI: 10.1063/1.456164] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Davenport L, Knutson JR, Brand L. Fluorescence studies of membrane dynamics and heterogeneity. Subcell Biochem 1989; 14:145-88. [PMID: 2655193 DOI: 10.1007/978-1-4613-9362-7_4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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45
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Limmer S. Physical Principles Underlying the Experimental Methods for Studying the Orientational Order of Liquid Crystals. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/prop.2190371202] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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46
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Arcioni A, Tarroni R, Zannoni C. Can be obtained from fluorescence depolarization in liquid crystals? ACTA ACUST UNITED AC 1988. [DOI: 10.1007/bf02455432] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wróbel D, Kozielski M. Resonance Raman spectra of chlorophylls dissolved in liquid crystal matrices. Biophys Chem 1988; 29:309-15. [PMID: 17010916 DOI: 10.1016/0301-4622(88)85053-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/1987] [Revised: 10/14/1987] [Accepted: 11/27/1987] [Indexed: 11/24/2022]
Abstract
The molecular ordering of molecules embedded in a uniaxial liquid crystalline system has been considered. In particular, planar Chl a molecules in an MBBA + EBBA mixture have been studied by using polarized resonance Raman spectroscopy. The second- and fourth-rank order parameters and the orientational distribution function of Chl a in the nematic MBBA + EBBA liquid crystalline phase are discussed.
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Affiliation(s)
- D Wróbel
- Institute of Physics, Poznań Technical University, Piotrowo 3, 60-965 Poznań Poland
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Dozov I, Kirov N, Petroff B. Molecular biaxiality and reorientational correlation functions in nematic phases: Theory. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 36:2870-2878. [PMID: 9899192 DOI: 10.1103/physreva.36.2870] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Arcioni A, Bertinelli F, Tarroni R, Zannoni C. Time resolved fluorescence depolarization in a nematic liquid crystal. Mol Phys 1987. [DOI: 10.1080/00268978700101711] [Citation(s) in RCA: 33] [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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