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Ye C, Deng J, Huai L, Cai A, Ling X, Guo H, Wang Q, Li X. Multifunctional capacity of CoMnFe-LDH/LDO activated peroxymonosulfate for p-arsanilic acid removal and inorganic arsenic immobilization: Performance and surface-bound radical mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150379. [PMID: 34571222 DOI: 10.1016/j.scitotenv.2021.150379] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/30/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Organoarsenic contaminants existing in water body threat human health and ecological environment due to insufficient bifunctional treatment technologies for organoarsenic degradation and inorganic arsenic immobilization. In order to safely and efficiently treat organoarsenic contaminants discharged into the aquatic environment, Co-Mn-Fe layered double hydroxide (CoMnFe-LDH) and Co-Mn-Fe layered double oxide (CoMnFe-LDO) were fabricated and employed as peroxymonosulfate (PMS) activator for organoarsenic degradation and inorganic arsenic immobilization, and p-arsanilic acid (p-ASA) was selected as target pollutant. Results demonstrated that the satisfactory removal of p-ASA (100.0%) in both CoMnFe-LDH/PMS and CoMnFe-LDO/PMS systems was obtained within 30 min, and substantial inorganic arsenic adsorption could be achieved (below 0.5 mg/L) in two systems with converting major inorganic arsenic species to arsenate. As XPS, ESR and quenching experiment revealed, the existence and generation of surface-bound radicals in two systems were identified. Based on density functional theory calculation and XPS analysis, the catalytic mechanism of CoMnFe-LDO/PMS system that PMS could be activated via direct electron transfer from adsorbed p-ASA was clarified, which differed from PMS activation via coupling with surface hydroxyl groups in CoMnFe-LDH/PMS system. Catalytic performance assessment under various critical operation parameters indicated that CoMnFe-LDH presented more stable ability of p-ASA removal in a wide pH range and complex aquatic environment. The recycle experiment demonstrated the excellent stability and reusability of CoMnFe-LDH(LDO). Besides, seven degradation products of p-ASA in CoMnFe-LDH/PMS system including phenolic compounds, azophenylarsonic acid, nitrobenzene and benzoquinne were identified by UV-Vis spectra and LC-TOF-MS analysis, and the corresponding degradation pathway was proposed. In summary, compared to CoMnFe-LDO/PMS, CoMnFe-LDH/PMS holds great promise for the development of an oxidation-adsorption process for efficient control of organoarsenic pollutant.
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Affiliation(s)
- Cheng Ye
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Jing Deng
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
| | - Lingyi Huai
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Anhong Cai
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Xiao Ling
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Hongguang Guo
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Qiongfang Wang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201600, China
| | - Xueyan Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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Hetero-metallic metal-organic frameworks for room-temperature NO 2 sensing. J Colloid Interface Sci 2021; 610:304-312. [PMID: 34922081 DOI: 10.1016/j.jcis.2021.11.177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/23/2021] [Accepted: 11/28/2021] [Indexed: 02/04/2023]
Abstract
Metal-organic frameworks (MOFs) with exceptional features such as high structural diversity and surface area as well as controlled pore size has been considered a promising candidate for developing room temperature highly-sensitive gas sensors. In comparison, the hetero-metallic MOFs with redox-active open-metal sites and mixed metal nodes may create peculiar surface properties and synergetic effects for enhanced gas sensing performances. In this work, the Fe atoms in the Fe3 (Porous coordination network) PCN-250 MOFs are partially replaced by transition metal Co, Mn, and Zn through a facile hydrothermal approach, leading to the formation of hetero-metallic MOFs (Fe2IIIMII, M = Co, Mn, and Zn). While the PCN-250 framework is maintained, the morphological and electronic band structural properties are manipulated upon the partial metal replacement of Fe. More importantly, the room temperature NO2 sensing performances are significantly varied, in which Fe2Mn PCN-250 demonstrates the largest response magnitude for ppb-level NO2 gas compared to those of pure Fe3 PCN-250 and other hetero-metallic MOF structures mainly attributed to the highest binding energy of NO2 gas. This work demonstrates the strong potential of hetero-metallic MOFs with carefully engineered substituted metal clusters for power-saving and high-performance gas sensing applications.
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Niskanen J, Xue Y, Golberg D, Winnik FM, Pellerin C, Vapaavuori J. Probing interfacial interactions and dynamics of polymers enclosed in boron nitride nanotubes. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jukka Niskanen
- Département de Chimie Université de Montréal Montréal Quebec Canada
- VTT Technical Research Centre of Finland Ltd Espoo, P.O. Box 1000, FI‐02044 VTT Finland
| | - Yanming Xue
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Tsukuba Japan
- School of Materials Science and Engineering Hebei University of Technology Tianjin China
- Hebei Key Laboratory of Boron Nitride and Nano Materials Hebei University of Technology Tianjin 300130 China
| | - Dmitri Golberg
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Tsukuba Japan
- Centre for Materials Science and School of Chemistry and Physics Queensland University of Technology (QUT) Brisbane Queensland Australia
| | - Françoise M. Winnik
- International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Tsukuba Japan
- Laboratory of Polymer Chemistry, Department of Chemistry University of Helsinki Helsinki Finland
| | | | - Jaana Vapaavuori
- Département de Chimie Université de Montréal Montréal Quebec Canada
- Department of Chemistry and Materials Science Aalto University Aalto Finland
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4
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Grebenkin S, Syutkin VM. Isomerization and reorientation of Disperse Red 1 in poly(ethyl methacrylate). J Chem Phys 2021; 155:164901. [PMID: 34717357 DOI: 10.1063/5.0063031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Irradiation of azobenzene-containing polymer materials with light causes cis-trans isomerization and reorientation of azobenzene moieties and thereby changes in the optical properties of the materials. In this study, the film of poly(ethyl methacrylate) doped with the azobenzene derivative Disperse Red 1 (DR1) has been irradiated with the linearly polarized light of 546 nm. The time profiles of optical anisotropy and absorbance measured during irradiation have been analyzed using a kinetic model. Based on the analysis of the time profiles, we conclude that the light-induced reorientation of DR1 molecules occurs in confined environments where trans → cis isomerization is hindered, while in roomy environments, there is no reorientation. In the confined environment, reorientation occurs due to the environmental changes caused by the isomerization attempts of the DR1 molecule. The polymer environment affects thermal cis → trans and light-induced trans → cis isomerizations of the DR1 molecule differently, suggesting that the spatial requirements for these processes to proceed are different. The thermal isomerization does not result in the reorientation of DR1 molecules in roomy environments.
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Affiliation(s)
- S Grebenkin
- Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Institutskaya 3, Novosibirsk 630090, Russian Federation
| | - V M Syutkin
- Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Institutskaya 3, Novosibirsk 630090, Russian Federation
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Joshi TP, Zhang G, Koju R, Qi Z, Liu R, Liu H, Qu J. The removal efficiency and insight into the mechanism of para arsanilic acid adsorption on Fe-Mn framework. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 601-602:713-722. [PMID: 28577406 DOI: 10.1016/j.scitotenv.2017.05.219] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/11/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
Para arsanilic acid (p-ASA) is extensively used as feed additives in poultry industry, resulting contaminates soil and natural water sources through the use of poultry litter as a fertilizer in croplands. Thus, removal of p-ASA prior to its entering environments is significant to control their environmental risk. Herein, we studied Fe-Mn framework and cubic Fe(OH)3 as promising novel adsorbents for the removal of p-ASA from aqueous solution. The chemical and micro-structural properties of Fe-Mn framework and cubic Fe(OH)3 materials were characterized by X-ray diffraction patterns (XRD), nitrogen adsorption (SBET), zeta (ζ-) potential, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectra (XPS). The maximum adsorption capacity for p-ASA on Fe-Mn framework and cubic Fe(OH)3 was determined to be 1.3mmolg-1 and 0.72mmolg-1 at pH4.0, respectively. Adsorption of p-ASA decreased gradually with increasing pH indicated that adsorption was strongly pH dependent. Azophenylarsonic acid was identified as an oxidation intermediate product of p-ASA after adsorption on Fe-Mn framework. Plausible removal mechanism for p-ASA by Fe-Mn framework was proposed. The obtained results gain insight into the potential applicability of Fe-Mn framework, which can be potentially important for the removal of p-ASA from water.
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Affiliation(s)
- Tista Prasai Joshi
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gong Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Rashmi Koju
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zenglu Qi
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruiping Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Huijuan Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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6
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Vapaavuori J, Bazuin CG, Pellerin C. Taming Macromolecules with Light: Lessons Learned from Vibrational Spectroscopy. Macromol Rapid Commun 2017; 39. [DOI: 10.1002/marc.201700430] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 07/20/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Jaana Vapaavuori
- Département de chimieUniversité de Montréal Montréal Québec H3C 3J7 Canada
| | | | - Christian Pellerin
- Département de chimieUniversité de Montréal Montréal Québec H3C 3J7 Canada
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7
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Joshi TP, Zhang G, Cheng H, Liu R, Liu H, Qu J. Transformation of para arsanilic acid by manganese oxide: Adsorption, oxidation, and influencing factors. WATER RESEARCH 2017; 116:126-134. [PMID: 28329708 DOI: 10.1016/j.watres.2017.03.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/08/2017] [Accepted: 03/11/2017] [Indexed: 06/06/2023]
Abstract
Aromatic organoarsenic compounds tend to transform into more mobile toxic inorganic arsenic via several processes, and can inadvertently spread toxic inorganic arsenic through the environment to water sources. To gain insight into the transformation mechanisms, we herein investigated how the process of para arsanilic acid (p-ASA) transformation works in detail on the surface of adsorbents by comparing it with phenylarsonic acid (PA) and aniline, which have similar chemical structures. In contrast to the values of 0.23 mmol g-1 and 0.68 mmol g-1 for PA and aniline, the maximum adsorption capacity was determined to be 0.40 mmol g-1 for p-ASA at pH 4.0. The results of FTIR and XPS spectra supported the presence of a protonated amine, resulting in a suitable condition for the oxidation of p-ASA. Based on the combined results of UV-spectra and UPLC-Q-TOF-MS, we confirmed that the adsorbed p-ASA was first oxidized through the transfer of one electron from p-ASA on MnO2 surface to form a radical intermediate, which through further hydrolysis and coupling led to formation of benzoquinone and azophenylarsonic acid, which was identified as a major intermediate. After that, p-ASA radical intermediate was cleaved to form arsenite (III), and then further oxidized into arsenate (V) with the release of manganese (Mn) into solution, indicating a heterogeneous oxidation process.
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Affiliation(s)
- Tista Prasai Joshi
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gong Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Hanyang Cheng
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruiping Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Huijuan Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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8
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Deckers S, Bloemen M, Koeckelberghs G, Glorieux C, Verbiest T, van der Veen MA. Conformational Changes of a Surface-Tethered Polymer during Radical Growth Probed with Second-Harmonic Generation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4157-4163. [PMID: 28402637 DOI: 10.1021/acs.langmuir.7b00172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The surface-induced polymerization of a chromophore-functionalized monomer was probed in situ for the first time using a nonlinear optical technique, second-harmonic generation. During the first hours of the polymerization reaction, dramatic changes in the tilt angle of the chromophore-functionalized side groups were observed. Following evaluation of the nonlinear optical data with those obtained from atomic force microscopy and ultraviolet-visible, we conclude that second-harmonic generation efficiently probes the polymerization reaction and the conformational changes of the surface-grafted polymer. With polymerization time, the conformation of the surface-tethered polymer changes from a conformation with the polymer backbone and its side groups flat on the surface, i.e., a "pancake" conformation, to a conformation where the polymer backbone is stretched away combined with tilted side groups or an enlarged tilt angle distribution, i.e., a "brush-type" conformation.
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Affiliation(s)
- Steven Deckers
- Department of Chemistry, University of Leuven , 3001 Leuven, Belgium
| | - Maarten Bloemen
- Department of Chemistry, University of Leuven , 3001 Leuven, Belgium
| | - Guy Koeckelberghs
- Department of Chemistry, University of Leuven , 3001 Leuven, Belgium
| | - Christ Glorieux
- Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde en Sterrenkunde, Katholieke Universiteit (KU) Leuven , Celestijnenlaan 200D, 3001 Heverlee, Belgium
| | - Thierry Verbiest
- Department of Chemistry, University of Leuven , 3001 Leuven, Belgium
| | - Monique A van der Veen
- Catalysis Engineering, Applied Sciences, Delft University of Technology , 2629 Delft, Netherlands
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9
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Saad B. Linearly and circularly polarized laser photoinduced molecular order in azo dye doped polymer films. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201713900012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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10
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Vapaavuori J, Laventure A, Bazuin CG, Lebel O, Pellerin C. Submolecular Plasticization Induced by Photons in Azobenzene Materials. J Am Chem Soc 2015; 137:13510-7. [PMID: 26439981 DOI: 10.1021/jacs.5b06611] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We demonstrate experimentally for the first time that the illumination of azobenzene derivatives leads to changes in molecular environment similar to those observed on heating but that are highly heterogeneous at the submolecular scale. This localized photoplasticization, which can be associated with a free volume gradient, helps to understand the puzzling phenomenon of photoinduced macroscopic material flow and photoexpansion upon illumination far below the glass transition temperature (T(g)). The findings stem from the correlation of infrared (IR) spectral band shifts measured upon illumination with those measured at controlled temperatures for two amorphous DR1-functionalized azo derivatives, a polymer, pDR1A, and a molecular glass, gDR1. This new approach reveals that IR spectroscopy can be used as an efficient label-free molecular-scale thermometer that allows the assignment of an effective temperature (T(eff)) to each moiety in these compounds when irradiated. While no band shift is observed upon illumination for the vibrational modes assigned to backbone moieties of pDR1A and gDR1 and a small band shift is found for the spacer moiety, dramatic band shifts are recorded for the azo moiety, corresponding to an increase in T(eff) of up to nearly 200 °C and a molecular environment that is equivalent to thermal heating well above the bulk T(g) of the material. An irradiated azo-containing material thus combines characteristic properties of amorphous materials both below and above its bulk T(g). The direct measurement of T(eff) is a powerful probe of the local environment at the submolecular scale, paving the way toward better rationalization of photoexpansion and the athermal malleability of azo-containing materials upon illumination below their T(g).
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Affiliation(s)
- Jaana Vapaavuori
- Département de chimie, Centre de recherche sur les matériaux auto-assemblés (CRMAA/CSACS), Université de Montréal , Montréal, QC H3C 3J7, Canada
| | - Audrey Laventure
- Département de chimie, Centre de recherche sur les matériaux auto-assemblés (CRMAA/CSACS), Université de Montréal , Montréal, QC H3C 3J7, Canada
| | - C Geraldine Bazuin
- Département de chimie, Centre de recherche sur les matériaux auto-assemblés (CRMAA/CSACS), Université de Montréal , Montréal, QC H3C 3J7, Canada
| | - Olivier Lebel
- Department of Chemistry and Chemical Engineering, Royal Military College of Canada , Kingston, ON Canada , K7K 7B4
| | - Christian Pellerin
- Département de chimie, Centre de recherche sur les matériaux auto-assemblés (CRMAA/CSACS), Université de Montréal , Montréal, QC H3C 3J7, Canada
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11
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Vapaavuori J, Heikkinen ITS, Dichiarante V, Resnati G, Metrangolo P, Sabat RG, Bazuin CG, Priimagi A, Pellerin C. Photomechanical Energy Transfer to Photopassive Polymers through Hydrogen and Halogen Bonds. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01813] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jaana Vapaavuori
- Département
de chimie, Centre de Recherche
sur les Matériaux Auto-assemblés (CRMAA/CSACS), Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC, Canada H3C 3J7
| | - Ismo T. S. Heikkinen
- Département
de chimie, Centre de Recherche
sur les Matériaux Auto-assemblés (CRMAA/CSACS), Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC, Canada H3C 3J7
- Department
of Applied Physics, Aalto University, P.O. BOX 13500, FI-00076 Aalto, Finland
| | - Valentina Dichiarante
- NFMLab-DCMIC
“Giulio Natta”, Politecnico di Milano, Via L. Mancinelli
7, IT-20131 Milano, Italy
| | - Giuseppe Resnati
- NFMLab-DCMIC
“Giulio Natta”, Politecnico di Milano, Via L. Mancinelli
7, IT-20131 Milano, Italy
| | - Pierangelo Metrangolo
- NFMLab-DCMIC
“Giulio Natta”, Politecnico di Milano, Via L. Mancinelli
7, IT-20131 Milano, Italy
| | - Ribal Georges Sabat
- Department
of Physics, Royal Military College of Canada, Kingston, ON, Canada K7K 7B4
| | - C. Geraldine Bazuin
- Département
de chimie, Centre de Recherche
sur les Matériaux Auto-assemblés (CRMAA/CSACS), Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC, Canada H3C 3J7
| | - Arri Priimagi
- Department
of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FI-33101 Tampere, Finland
| | - Christian Pellerin
- Département
de chimie, Centre de Recherche
sur les Matériaux Auto-assemblés (CRMAA/CSACS), Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC, Canada H3C 3J7
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Huot A, Lefèvre T, Rioux-Dubé JF, Paquet-Mercier F, Nault AP, Auger M, Pézolet M. Effect of mechanical deformation on the structure of regenerated Bombyx mori silk fibroin films as revealed using Raman and infrared spectroscopy. APPLIED SPECTROSCOPY 2015; 69:689-698. [PMID: 25954973 DOI: 10.1366/14-07776] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To better understand the effect of mechanical stress during the spinning of silk, the protein orientation and conformation of Bombyx mori regenerated silk fibroin (RSF) films have been studied as a function of deformation in a static mode or in real time by tensile-Raman experiments and polarization modulation infrared linear dichroism (PM-IRLD), respectively. The data show that either for step-by-step or continuous stretching, elongation induces the progressive formation of β-sheets that align along the drawing axis, in particular above a draw ratio of ~2. The formation of β-sheets begins before their alignment during a continuous drawing. Unordered chains were, however, never found to be oriented, which explains the very low level of orientation of the amorphous phase of the natural fiber. Stress-perturbed unordered chains readily convert into β-sheets, the strain-induced transformation following a two-state process. The final level of orientation and β-sheet content are lower than those found in the native fiber, indicating that various parameters have to be optimized in order to implement a spinning process as efficient as the natural one. Finally, during the stress relaxation period in a step-by-step drawing, there is essentially no change of the content and orientation of the β-sheets, suggesting that only unordered structures tend to reorganize.
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Affiliation(s)
- Alexandrine Huot
- Department of Chemistry, Centre de recherche sur les matériaux avancés, Centre québécois sur les matériaux fonctionnels, Regroupement québécois de recherche sur la fonction, la structure et l'ingénierie des protéines, Université Laval, Québec, QC, Canada G1V 0A6
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13
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Chaudhary OJ, Ahmad NM. Photo-switchable azobenzene-functionalized block copolymers from atom transfer radical polymerizations. POLYMER SCIENCE SERIES B 2014. [DOI: 10.1134/s156009041402002x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Yi Q, Sukhorukov GB. UV-induced disruption of microcapsules with azobenzene groups. SOFT MATTER 2014; 10:1384-1391. [PMID: 24651273 DOI: 10.1039/c3sm51648b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
UV responsive microcapsules containing azobenzene were fabricated by sequential deposition of oppositely charged poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl, sodium salt] (PAZO) and poly(diallyldimethyl ammonium) chloride (PDADMAC). As found in this work, combination of PDADMAC and PAZO led to aggregation of PAZO segments in the progress of polymer deposition, which facilitated the large extent of J aggregates when the capsules were exposed to UV light. J aggregate assemblies destroyed the integrity of capsule shell formations, demonstrating capsule swelling and further breakage. This UV induced capsule breakage offered a new way to modulate the release of encapsulated cargos.
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Affiliation(s)
- Qiangying Yi
- School of Engineering and Materials Science, Queen Mary, University of London, London, UK.
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15
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Grebenkin SY, Syutkin VM. Librations of probe molecules in polymeric matrixes. J Phys Chem B 2014; 118:2568-75. [PMID: 24521212 DOI: 10.1021/jp412476s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Formation of optical anisotropy under linearly polarized light has been studied in films of poly(n-butyl methacrylate) and poly(n-hexyl methacrylate) doped with azo compound (1-naphthyl-p-azo-methoxybenzene). Time profiles of the absorption anisotropy and absorbance can not be fitted with a commonly used model of anisotropy formation, which includes the transition dipole turns upon cis-trans isomerization and the rotational diffusion: the experimental values of anisotropy happen to be much lower than the calculated ones. To explain the low anisotropy level, fast molecular librations, i.e., stochastic pendulum-like oscillations of azo molecules about their average orientations were introduced. Numerical simulation of anisotropy and absorbance time profiles with the modified model gives estimates for average libration amplitude of 45-60° at temperatures 25-65 K below T(g).
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Affiliation(s)
- S Yu Grebenkin
- Institute of Chemical Kinetics and Combustion, Novosibirsk, 630090, Russian Federation
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Yi Q, Sukhorukov GB. Externally triggered dual function of complex microcapsules. ACS NANO 2013; 7:8693-8705. [PMID: 24083649 DOI: 10.1021/nn4029772] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
By introducing UV-sensitive chemical groups causing different potential response as building blocks, fabricated LbL capsules can be endowed with dual UV-responsive properties in specific layers. One block is responsible for fast capsule sealing and the other for longer term capsule swelling and rupture. Therefore, the multifunction of these capsules could be activated selectively when exposed to external UV light with suitable wavelengths. In this work, dual-functional complex microcapsules (PDADMAC/PAZO)4-(DAR/Nafion)2 containing both diazonium and aozbenzene groups were proposed as clear examples to realize a time-dependent UV response for successive encapsulation and release. Upon exposure to UV light, the DAR/Nafion layers underwent a rapid in situ cross-linking and hence to seal the capsule shells through diazonium-related photolysis. Then further gradual shell swelling was followed by realignment of azobenzene molecules in PDADMAC/PAZO layers. Fluorescent polymers were consequently studied as cargo substances. Results indicated that continuous UV light triggered rapid cargo encapsulation over minutes time scale and gradual release with continuous irradiation over hours.
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Affiliation(s)
- Qiangying Yi
- School of Engineering and Materials Science, Queen Mary, University of London , Mile End Road, London, E1 4NS United Kingdom
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17
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Wang Y, Ye G, Wang X. Photoinduced orientation in nunchaku-like azo molecular glass studied by birefringence characterization and FT-IR spectroscopy. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm00043a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Ercole F, Davis TP, Evans RA. Photo-responsive systems and biomaterials: photochromic polymers, light-triggered self-assembly, surface modification, fluorescence modulation and beyond. Polym Chem 2010. [DOI: 10.1039/b9py00300b] [Citation(s) in RCA: 444] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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20
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Kilosanidze B, Kakauridze G, Margolin L, Kobulashvili I. Real-time objects recognition by photoanisotropic copies. APPLIED OPTICS 2007; 46:7537-7543. [PMID: 17952193 DOI: 10.1364/ao.46.007537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The method of object recognition is described by the example of objects of amplitude transparent type. The method is to obtain a photoanisotropic copy of object images on polarization-sensitive material. At consequent illumination of the photoanisotropic copy with a parallel circularly polarized beam of nonactinic light, the transmitted light becomes elliptically polarized. It is shown that the characteristics of the summary polarization ellipse in the Fraunhofer diffraction region uniquely identify the given object. The real-time determination of the characteristics of the summary polarization ellipse is made by means of diffraction gratings of anisotropic profile and by comparison of these characteristics with etalon from the database.
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Affiliation(s)
- Barbara Kilosanidze
- Coherent and Quantum Optics Department, Optics Research Laboratory, Institute of Cybernetics, Tbilisi, Georgia.
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21
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Shulyndin SV, Vakhonina TA, Estrina GA, Rozenberg BA, Zuev MB. Synthesis, structure, and properties of bifunctional azobenzene monomers and polymers on their basis. POLYMER SCIENCE SERIES A 2007. [DOI: 10.1134/s0965545x07070036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Zhao X, Hu X, Gan LH. Photoluminescent behavior of poly(3-hexylthiophene) derivatives with a high azobenzene content in the side chains. POLYM ADVAN TECHNOL 2005. [DOI: 10.1002/pat.599] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Zhao X, Niu Y, Hu X. Photochemical control of photoluminescence property of photoactive polythiophenes. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/polb.20445] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Gilbert Y, Fikri R, Ruymantseva A, Lerondel G, Bachelot R, Barchiesi D, Royer P. High-Resolution Nanophotolithography in Atomic Force Microscopy Contact Mode. Macromolecules 2004. [DOI: 10.1021/ma035437g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yann Gilbert
- Laboratoire de Nanotechnologie et d'Instrumentation Optique, Université de Technologie de Troyes, Centre National de la Recherche Scientifique, B.P. 2060, 10010 Troyes Cedex, France
| | - Radouane Fikri
- Laboratoire de Nanotechnologie et d'Instrumentation Optique, Université de Technologie de Troyes, Centre National de la Recherche Scientifique, B.P. 2060, 10010 Troyes Cedex, France
| | - Anna Ruymantseva
- Laboratoire de Nanotechnologie et d'Instrumentation Optique, Université de Technologie de Troyes, Centre National de la Recherche Scientifique, B.P. 2060, 10010 Troyes Cedex, France
| | - Gilles Lerondel
- Laboratoire de Nanotechnologie et d'Instrumentation Optique, Université de Technologie de Troyes, Centre National de la Recherche Scientifique, B.P. 2060, 10010 Troyes Cedex, France
| | - Renaud Bachelot
- Laboratoire de Nanotechnologie et d'Instrumentation Optique, Université de Technologie de Troyes, Centre National de la Recherche Scientifique, B.P. 2060, 10010 Troyes Cedex, France
| | - Dominique Barchiesi
- Laboratoire de Nanotechnologie et d'Instrumentation Optique, Université de Technologie de Troyes, Centre National de la Recherche Scientifique, B.P. 2060, 10010 Troyes Cedex, France
| | - Pascal Royer
- Laboratoire de Nanotechnologie et d'Instrumentation Optique, Université de Technologie de Troyes, Centre National de la Recherche Scientifique, B.P. 2060, 10010 Troyes Cedex, France
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25
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Sek D, Grabiec E, Miniewicz A. Investigations of Polymers with Chromophore Units I. Synthesis and Properties of New Poly(ester-imide)s from 2,4-Dihydroxy-4’-nitroazobenzene. Polym J 2003. [DOI: 10.1295/polymj.35.749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Affiliation(s)
- Almeria Natansohn
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
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27
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Tawa K, Knoll W. Out-of-Plane Photoreorientation of Azo Dyes in Polymer Thin Films Studied by Surface Plasmon Resonance Spectroscopy. Macromolecules 2002. [DOI: 10.1021/ma020031+] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Hu X, Zhao X, Gan LH, Xia X. Synthesis, characterization, and photochromic properties of PMMA functionalized with 4,4?-diacryloyloxyazobenzene. J Appl Polym Sci 2001. [DOI: 10.1002/app.10063] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Tawa K, Zettsu N, Minematsu K, Ohta K, Namba A, Tran-Cong Q. Photoinduced reorientation of azo-dyes covalently linked to a styrene copolymer in bulk state. J Photochem Photobiol A Chem 2001. [DOI: 10.1016/s1010-6030(01)00475-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Joo WJ, Shin HD, Oh CH, Song SH, Kim PS, Ko BS, Han YK. Novel mechanism of fast relaxation of photo-induced anisotropy in a poly(malonic esters) containingp-cyanoazobenzene. J Chem Phys 2000. [DOI: 10.1063/1.1315996] [Citation(s) in RCA: 7] [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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32
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Labarthet FL, Freiberg S, Pellerin C, Pézolet M, Natansohn A, Rochon P. Spectroscopic and Optical Characterization of a Series of Azobenzene-Containing Side-Chain Liquid Crystalline Polymers. Macromolecules 2000. [DOI: 10.1021/ma000453o] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- François Lagugné Labarthet
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Department of Physics, Royal Military College, Kingston, Ontario, Canada, K7K 5L0; and CERSIM, Département de Chimie, Université Laval, Québec, Canada, G1K 7P4
| | - Stephan Freiberg
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Department of Physics, Royal Military College, Kingston, Ontario, Canada, K7K 5L0; and CERSIM, Département de Chimie, Université Laval, Québec, Canada, G1K 7P4
| | - Christian Pellerin
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Department of Physics, Royal Military College, Kingston, Ontario, Canada, K7K 5L0; and CERSIM, Département de Chimie, Université Laval, Québec, Canada, G1K 7P4
| | - Michel Pézolet
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Department of Physics, Royal Military College, Kingston, Ontario, Canada, K7K 5L0; and CERSIM, Département de Chimie, Université Laval, Québec, Canada, G1K 7P4
| | - Almeria Natansohn
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Department of Physics, Royal Military College, Kingston, Ontario, Canada, K7K 5L0; and CERSIM, Département de Chimie, Université Laval, Québec, Canada, G1K 7P4
| | - Paul Rochon
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Department of Physics, Royal Military College, Kingston, Ontario, Canada, K7K 5L0; and CERSIM, Département de Chimie, Université Laval, Québec, Canada, G1K 7P4
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33
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Han M, Morino S, Ichimura K. Factors Affecting In-Plane and Out-of-Plane Photoorientation of Azobenzene Side Chains Attached to Liquid Crystalline Polymers Induced by Irradiation with Linearly Polarized Light. Macromolecules 2000. [DOI: 10.1021/ma000347m] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mina Han
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Shin'ya Morino
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kunihiro Ichimura
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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34
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Delaire JA, Nakatani K. Linear and Nonlinear Optical Properties of Photochromic Molecules and Materials. Chem Rev 2000; 100:1817-1846. [PMID: 11777422 DOI: 10.1021/cr980078m] [Citation(s) in RCA: 713] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jacques A. Delaire
- Laboratoire de Photophysique et de Photochimie Supramoléculaires et Macromoléculaires (PPSM, UMR 8531 of CNRS), Ecole Normale Supérieure de Cachan, 94235 Cachan Cedex, France
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35
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Chen JP, Labarthet FL, Natansohn A, Rochon P. Highly Stable Optically Induced Birefringence and Holographic Surface Gratings on a New Azocarbazole-Based Polyimide. Macromolecules 1999. [DOI: 10.1021/ma990753+] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Lagugné Labarthet F, Buffeteau T, Sourisseau C. Azopolymer Holographic Diffraction Gratings: Time Dependent Analyses of the Diffraction Efficiency, Birefringence, and Surface Modulation Induced by Two Linearly Polarized Interfering Beams. J Phys Chem B 1999. [DOI: 10.1021/jp990752j] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- F. Lagugné Labarthet
- Laboratoire de Physico-Chimie Moléculaire, C.N.R.S., UMR 5803, Université Bordeaux I, 351 cours de la Libération, 33405 Talence cedex, France
| | - T. Buffeteau
- Laboratoire de Physico-Chimie Moléculaire, C.N.R.S., UMR 5803, Université Bordeaux I, 351 cours de la Libération, 33405 Talence cedex, France
| | - C. Sourisseau
- Laboratoire de Physico-Chimie Moléculaire, C.N.R.S., UMR 5803, Université Bordeaux I, 351 cours de la Libération, 33405 Talence cedex, France
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37
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Dumont M, El Osman A. On spontaneous and photoinduced orientational mobility of dye molecules in polymers. Chem Phys 1999. [DOI: 10.1016/s0301-0104(99)00096-8] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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