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Yuan K, Rampal N, Du X, Shu F, Wang Y, Wang H, Stack AG, Ben Ishai P, Anovitz LM, Xu P. Impact of magnetic and electric fields on the free energy to form a calcium carbonate ion-pair. Phys Chem Chem Phys 2024. [PMID: 39258500 DOI: 10.1039/d4cp02041c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Electromagnetic fields are used in water treatment and desalination to regulate scale formation and extend the lifetime of membranes. External electric and magnetic fields can promote or suppress mineral nucleation and growth. However, the molecular-scale mechanisms of such processes remain unknown. Computing the free energies needed to form ion pairs under external fields provides important insights into understanding the elemental steps during the initial formation of mineral scales. In this paper, we used molecular dynamics combined with metadynamics simulations to investigate the free energies of forming the [Ca-CO3]0 ion pair, a fundamental building block of carbonate scales, under a range of magnetic (up to 10 T) and electric (up to 10 V m-1) fields in water. The presence of constant magnetic or electric fields favored the ion pairing reaction and lowered the free energies by up to 3% to 6%. The internal energy and entropic components of the free energy showed significant changes and exhibited non-linear behavior with increasing field strength. The [Ca-CO3]0 ion pairing is an entropy-driven process in the absence of an external field, but the mechanism shifts to an internal energy-driven process under selected external fields, suggesting possible changes in the nucleation pathways.
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Affiliation(s)
- Ke Yuan
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Nikhil Rampal
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Xuewei Du
- Department of Civil Engineering, New Mexico State University, Las Cruces, NM 88003, USA
| | - Fangjun Shu
- Department of Mechanical & Aerospace Engineering, New Mexico State University, NM 88003, USA
| | - Yanxing Wang
- Department of Mechanical & Aerospace Engineering, New Mexico State University, NM 88003, USA
| | - Huiyao Wang
- Department of Civil Engineering, New Mexico State University, Las Cruces, NM 88003, USA
| | - Andrew G Stack
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Paul Ben Ishai
- Department of Physics, Ariel University, 4070000 Ariel, Israel
| | - Lawrence M Anovitz
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Pei Xu
- Department of Civil Engineering, New Mexico State University, Las Cruces, NM 88003, USA
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2
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Panczyk T, Camp PJ. Lorentz forces induced by a static magnetic field have negligible effects on results from classical molecular dynamics simulations of aqueous solutions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115701] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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3
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Weissman A, Klimovsky H, Harel D, Ron R, Oheim M, Salomon A. Fabrication of Dipole-Aligned Thin Films of Porphyrin J-Aggregates over Large Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:844-851. [PMID: 31912741 DOI: 10.1021/acs.langmuir.9b02754] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report a new approach for large-scale alignment of micron-sized J-aggregates of a derivative of porphyrin onto planar glass substrates. We applied a unidirectional nitrogen flow to an aqueous dye drop deposited onto a glass substrate to form an about 5 nm thick film of aligned J-aggregates over macroscopic surface areas up to several millimeters. The inter-aggregate distance is ∼500 nm, and it scales with the nitrogen pressure. We verified the film thickness and J-aggregate alignment using multimodal microscopy and spectroscopy techniques. Our technique is fast, simple, and cost-effective for producing large two-dimensional (2-D) arrays of aligned emitters.
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Affiliation(s)
- Adam Weissman
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA) , Bar-Ilan University , Ramat-Gan 5290002 , Israel
| | - Hodaya Klimovsky
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA) , Bar-Ilan University , Ramat-Gan 5290002 , Israel
| | - Dor Harel
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA) , Bar-Ilan University , Ramat-Gan 5290002 , Israel
| | - Racheli Ron
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA) , Bar-Ilan University , Ramat-Gan 5290002 , Israel
| | - Martin Oheim
- Université de Paris, SPPIN - Saints-Pères Paris Institute for the Neurosciences, CNRS , F-75006 Paris , France
| | - Adi Salomon
- Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA) , Bar-Ilan University , Ramat-Gan 5290002 , Israel
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4
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Tanaka T, Ishitobi M, Aoyama T, Matsumoto S. Highly Oriented J-Aggregates of Nitroazo Dye and Its Surface-Induced Chromism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4710-4718. [PMID: 27088848 DOI: 10.1021/acs.langmuir.6b00289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Highly oriented J-aggregates of a nitroazo dye were obtained in solid thin films on aligned poly(tetrafluoroethylene) surfaces. During film deposition on a friction-transferred poly(tetrafluoroethylene) layer, a sharp peak grew in the polarized absorption spectra around 613 nm, which was red-shifted 117 nm from the peak in dilute dichloromethane solution. The peak showed remarkable optical anisotropy: dichroic ratios D of up to 22 were observed, and the intrinsic D value should substantially exceed this value. These results indicate that the peak is attributable to highly oriented J-aggregates. On glass, however, H-like aggregates grew, exhibiting an absorption peak at 410 nm. Hence, the substrate surface induced the remarkable chromism observed as a 203 nm red shift.
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Affiliation(s)
- Toshihiko Tanaka
- Department of Chemistry and Biochemistry, Fukushima College, National Institute of Technology , 30 Aza-Nagao, Tairakamiarakawa, Iwaki, Fukushima 970-8034, Japan
- ASET Sumitomo Chemical laboratory, Tsukuba Research Laboratory, Sumitomo Chemical Co. Ltd., 6 Kitahara, Tsukuba, Ibaraki 300-3294, Japan
- RIKEN Advanced Science Institute , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Environment and Natural Sciences, Graduate School of Environment and Information Sciences, Yokohama National University , 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Masamitsu Ishitobi
- ASET Sumitomo Chemical laboratory, Tsukuba Research Laboratory, Sumitomo Chemical Co. Ltd., 6 Kitahara, Tsukuba, Ibaraki 300-3294, Japan
| | - Tetsuya Aoyama
- RIKEN Advanced Science Institute , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shinya Matsumoto
- Department of Environment and Natural Sciences, Graduate School of Environment and Information Sciences, Yokohama National University , 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
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5
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Takazawa K, Inoue JI, Mitsuishi K. Self-assembled coronene nanofibers: optical waveguide effect and magnetic alignment. NANOSCALE 2014; 6:4174-4181. [PMID: 24608753 DOI: 10.1039/c3nr06760b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To fabricate organic nanofibers that function as active optical waveguides with semiconductor properties, a facile procedure was developed to grow single crystalline nanofibers via π-π stacking of the polycyclic aromatic molecule, coronene, through solution evaporation on a substrate. The fabricated nanofibers with millimeter-scale lengths have well-defined shapes, smooth surfaces, and low-defect structures. The nanofibers are demonstrated to function as efficient active waveguides that propagate their fluorescence (FL) along the fiber axis over their entire length. We further demonstrate that the nanofibers can be highly aligned on the substrate when solution evaporation is conducted in a magnetic field of 12 T. The mechanism of the magnetic alignment can be elucidated by considering the anisotropy of the diamagnetic susceptibility of a single coronene molecule and the crystal structure of a nanofiber. Owing to the high degree of alignment, the nanofibers rarely cross each other, allowing for measurement of the waveguiding properties of single isolated nanofibers. The nanofibers propagate their FL of λ > 500 nm with a low propagation loss of 0-3 dB per 100 μm, indicating that the nanofibers function as sub-wavelength scale, low-loss waveguides. Thus, they are promising building blocks for miniaturized optoelectronic circuits.
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Affiliation(s)
- Ken Takazawa
- National Institute for Materials Science, 3-13 Sakura, Tsukuba, 305-0003, Japan.
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Rikken RSM, Nolte RJM, Maan JC, van Hest JCM, Wilson DA, Christianen PCM. Manipulation of micro- and nanostructure motion with magnetic fields. SOFT MATTER 2014; 10:1295-308. [PMID: 24652392 DOI: 10.1039/c3sm52294f] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this review we will focus on how magnetic fields can be used to manipulate the motion of various micro- and nanostructures in solution. We will distinguish between ferromagnetic, paramagnetic and diamagnetic materials. Furthermore, the use of various kinds of magnetic fields, such as homogeneous, inhomogeneous and rotating magnetic fields, is discussed. To date most research has focused on the use of ferro- and paramagnetic materials, but here we also describe the possibilities of magnetic manipulation of diamagnetic materials. Since the vast majority of soft matter is diamagnetic, this paves the way for many new applications to manipulate the motion of micro- and nanostructures.
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Affiliation(s)
- Roger S M Rikken
- High Field Magnet Laboratory (HFML), Radboud University Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.
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7
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Rikken RSM, Kerkenaar HHM, Nolte RJM, Maan JC, van Hest JCM, Christianen PCM, Wilson DA. Probing morphological changes in polymersomes with magnetic birefringence. Chem Commun (Camb) 2014; 50:5394-6. [DOI: 10.1039/c3cc47483f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Demir MM, Horzum N, Özen B, Özçelik S. Hierarchial Coassembly of a Cyanine Dye in Poly(vinyl alcohol) Fibrous Films by Electrospinning. J Phys Chem B 2013; 117:10920-8. [DOI: 10.1021/jp404977d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mustafa M. Demir
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
| | - Nesrin Horzum
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
| | - Bengisu Özen
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
| | - Serdar Özçelik
- Department of Chemistry, and §Department of Material Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
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9
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Myhre G, Pau S. Imaging capability of patterned liquid crystals. APPLIED OPTICS 2009; 48:6152-6158. [PMID: 19904311 DOI: 10.1364/ao.48.006152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We demonstrate the ability to make high resolution arbitrary patterned optical retarders using liquid crystal polymer (LCP). Contact lithography is used to define unique LCP alignment domains. Patterned LCP retarders are imaged between crossed polarizers to determine pattern visibility as a function of feature size. It was determined that patterned retarders for wavelengths between 250 nm and 2500 nm can be constructed with feature sizes as small as 4 microm. We also showed that multiple patterns can be created on the same substrate using a combination of patterned LCP and opaque features. Our process has applications in displays, double-patterning lithography, and imaging polarimetry.
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Affiliation(s)
- Graham Myhre
- College of Optical Sciences, University of Arizona, 1630 East University Boulevard, Tucson, Arizona 85721, USA.
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10
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Demir MM, Özen B, Özçelik S. Formation of Pseudoisocyanine J-Aggregates in Poly(vinyl alcohol) Fibers by Electrospinning. J Phys Chem B 2009; 113:11568-73. [DOI: 10.1021/jp902380n] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mustafa M. Demir
- Department of Chemistry, İzmir Institute of Technology, Gülbahçe Köyü, Urla 35430 İzmir, Turkey
| | - Bengisu Özen
- Department of Chemistry, İzmir Institute of Technology, Gülbahçe Köyü, Urla 35430 İzmir, Turkey
| | - Serdar Özçelik
- Department of Chemistry, İzmir Institute of Technology, Gülbahçe Köyü, Urla 35430 İzmir, Turkey
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11
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Shapovalov SA, Samoilov EA. Regularities of homo- and heteroassociation of the pinacyanol cation in aqueous solution. Russ Chem Bull 2009. [DOI: 10.1007/s11172-008-0183-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Heyen AJJV, Buron CC, Tianshi Q, Bauer R, Jonas AM, Müllen K, De Schryver FC, De Feyter S. Guiding the self-assembly of a second-generation polyphenylene dendrimer into well-defined patterns. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:1160-1167. [PMID: 18651629 DOI: 10.1002/smll.200701009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A second-generation polyphenylene dendrimer 1 is shown to self-assemble into nanofibers. To guide the formation of the dendrimer fibers into well-defined patterns, 1H,1H,2H,2H-perfluorodecyltrichlorosilane is grafted in the gas phase onto a silicon substrate. De-wetting of the solution on the nanopatterned surface results in the formation of a nanostructured template, into which fiber growth subsequently occurs under the constraints set by the de-wetted morphology.
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Affiliation(s)
- An J J Ver Heyen
- K.U. Leuven, Department of Chemistry, Division of Molecular and Nanomaterials, and Institute for Nanoscale Physics and Chemistry, Celestijnenlaan 200F, 3001 Heverlee, Belgium
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13
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Zhang Y, Xiang J, Tang Y, Xu G, Yan W. Transition of H- and J-aggregate of a Cyanine Dye Based on Cation Embedded in Aggregation. CHEM LETT 2006. [DOI: 10.1246/cl.2006.1316] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Kitahama Y, Kimura Y, Takazawa K. Study of internal structure of meso-tetrakis (4-sulfonatophenyl) porphine J-aggregates in solution by fluorescence microscope imaging in a magnetic field. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:7600-4. [PMID: 16922538 DOI: 10.1021/la061127q] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
To determine the internal molecular arrangement of organic dye aggregates, a technique for observing the fluorescence microscope image of a solution consisting of dye aggregates in a magnetic field was developed. Using this technique, the fluorescence image of meso-tetrakis (4-sulfonatophenyl) porphine (TPPS) J-aggregates in a solution in a magnetic field of 10 T was observed. It was observed that individual rod-shaped TPPS aggregates (4-20 microm in length) were aligned parallel to the applied field. The polarized absorption spectra of the sample solution were also measured in the fields of up to 10 T. The spectra show the magnetic field dependence of the J-band intensity, reflecting the magnetic alignment of the aggregates. On the basis of the magnetic and optical properties obtained by the experiments, it was proposed that TPPS J-aggregates have a tube-like structure and are constructed from one-dimensional molecular arrays that are stacked parallel to the long axis of the tube.
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Affiliation(s)
- Yasutaka Kitahama
- Tsukuba Magnet Laboratory, National Institute for Materials Science, 3-13 Sakura, Tsukuba 305-0003, Japan
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15
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Kitahama Y, Kimura Y, Takazawa K, Kido G. Magnetic Alignment of Fiber-Shaped Pseudoisocyanine J Aggregates in a Gelated Solution. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.727] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Shklyarevskiy IO, Jonkheijm P, Christianen PCM, Schenning APHJ, Meijer EW, Henze O, Kilbinger AFM, Feast WJ, Del Guerzo A, Desvergne JP, Maan JC. Magnetic Deformation of Self-Assembled Sexithiophene Spherical Nanocapsules. J Am Chem Soc 2005; 127:1112-3. [PMID: 15669845 DOI: 10.1021/ja0431096] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the experimental observation of magnetic field deformation of spherical nanocapsules, self-assembled from sexithiophene molecules, into oblate spheroids, confirming a long-standing theoretical prediction. The magnetically deformed objects can be trapped in a compatible organogel to make them suitable for further investigations and applications. Our results show that strong magnetic forces can be effectively used, in a contact-free manner, as a tool to control the self-organization of a whole class of functional organic molecules.
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Affiliation(s)
- Igor O Shklyarevskiy
- High Field Magnet Laboratory, Radboud University Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
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17
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Shklyarevskiy IO, Christianen PCM, Aret E, Meekes H, Vlieg E, Deroover G, Callant P, van Meervelt L, Maan JC. Determination of the Molecular Arrangement Inside Cyanine Dye Aggregates by Magnetic Orientation. J Phys Chem B 2004. [DOI: 10.1021/jp049945j] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- I. O. Shklyarevskiy
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - P. C. M. Christianen
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - E. Aret
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - H. Meekes
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - E. Vlieg
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - G. Deroover
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - P. Callant
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - L. van Meervelt
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - J. C. Maan
- High Field Magnet Laboratory, NSRIM, University of Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands, Department of Solid State Chemistry, NSRIM, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands, AGFA-Gevaert N. V., Septestraat 27, B-2640, Mortsel, Belgium, and Department of Chemistry, KULeuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
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18
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von Berlepsch H, Kirstein S, Hania R, Didraga C, Pugžlys A, Böttcher C. Stabilization of Individual Tubular J-Aggregates by Poly(vinyl alcohol). J Phys Chem B 2003. [DOI: 10.1021/jp030526g] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hans von Berlepsch
- Forschungszentrum für Elektronenmikroskopie der Freien Universität Berlin, Fabeckstrasse 36 a, D-14195 Berlin, Germany, Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany, and Materials Science Center, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Stefan Kirstein
- Forschungszentrum für Elektronenmikroskopie der Freien Universität Berlin, Fabeckstrasse 36 a, D-14195 Berlin, Germany, Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany, and Materials Science Center, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Ralph Hania
- Forschungszentrum für Elektronenmikroskopie der Freien Universität Berlin, Fabeckstrasse 36 a, D-14195 Berlin, Germany, Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany, and Materials Science Center, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Cǎtǎlin Didraga
- Forschungszentrum für Elektronenmikroskopie der Freien Universität Berlin, Fabeckstrasse 36 a, D-14195 Berlin, Germany, Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany, and Materials Science Center, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Audrius Pugžlys
- Forschungszentrum für Elektronenmikroskopie der Freien Universität Berlin, Fabeckstrasse 36 a, D-14195 Berlin, Germany, Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany, and Materials Science Center, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Christoph Böttcher
- Forschungszentrum für Elektronenmikroskopie der Freien Universität Berlin, Fabeckstrasse 36 a, D-14195 Berlin, Germany, Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany, and Materials Science Center, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
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19
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Kato N, Yamamoto M, Itoh K, Uesu Y. In Situ Observation of the Thermochromic Phase Transition of the Merocyanine J-Aggregates Monolayer at the Air−Water Interface Using External Infrared Reflection Absorption Spectroscopy. J Phys Chem B 2003. [DOI: 10.1021/jp0350621] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Noritaka Kato
- Department of Physics, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan, Department of Chemistry, College of Arts and Sciences, Showa University, 1-5-8, Hatanodai, Shinagawa-ku, 142-8555 Tokyo, Japan, and Department of Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan
| | - Masato Yamamoto
- Department of Physics, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan, Department of Chemistry, College of Arts and Sciences, Showa University, 1-5-8, Hatanodai, Shinagawa-ku, 142-8555 Tokyo, Japan, and Department of Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan
| | - Koichi Itoh
- Department of Physics, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan, Department of Chemistry, College of Arts and Sciences, Showa University, 1-5-8, Hatanodai, Shinagawa-ku, 142-8555 Tokyo, Japan, and Department of Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan
| | - Yoshiaki Uesu
- Department of Physics, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan, Department of Chemistry, College of Arts and Sciences, Showa University, 1-5-8, Hatanodai, Shinagawa-ku, 142-8555 Tokyo, Japan, and Department of Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku-ku, 169-8555 Tokyo, Japan
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Schaberle FA, Kuz'min VA, Borissevitch IE. Spectroscopic studies of the interaction of bichromophoric cyanine dyes with DNA. Effect of ionic strength. BIOCHIMICA ET BIOPHYSICA ACTA 2003; 1621:183-91. [PMID: 12726994 DOI: 10.1016/s0304-4165(03)00057-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Spectroscopic characteristics of a cyanine dye with two chromophores (biscyanine dye, BCD) in aqueous solutions and effects of NaCl and DNA upon these characteristics have been studied by optical absorption, circular dichroism (CD) and fluorescence spectroscopies. In homogeneous solutions, BCD is characterized by intense optical absorption (epsilon =1.33 x 10(5) M(-1) x cm(-1)) and weak fluorescence (phi(fl)=0.018) in the wavelength region greater than 600 nm. The dye forms H-aggregates at low concentrations (10(-6) M). NaCl stimulates the formation of both H- and J-aggregates of the dye at much lower dye concentrations, while DNA in low concentrations (<10(-6) M) stimulated the formation of just J-aggregates on the surface of the DNA molecule. Higher DNA concentrations induce the dye to disaggregate, and there exists an equilibrium between three dye forms: free monomers, J-aggregates and bound monomers, the maximum content of J-aggregates was observed at [DNA]/[BCD]=0.6+/-0.2 and total disaggregation at [DNA]/[BCD]=190+/-20. J-aggregates are characterized by phi(fl)=0.05 and bound monomers by phi(fl)=0.44. In the presence of NaCl, total disaggregation was observed at [DNA]/[BCD]=570+/-10 due to competition between Na(+) and the dye molecules for DNA electronegative binding sites.
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Affiliation(s)
- Fábio A Schaberle
- Departamento de Fi;sica e Matemática, Faculdade de Filosofia Ciência e Letras de Ribeirão Preto, Universidade de São Paulo, Av Bandeirantes 3900, Vila Monte Alegre, CEP 14040-901, Ribeirão Preto SP, Brazil
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