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Gao J, Ouyang G, Zhou P, Shang P, Long H, Ji L, Qu Z, Guo M, Yang Y, Zhao F, Yin X, Ke Y, Wei Z, Zhang Z, Yan X, Liu M, Qiao Y, Song Y. Spatiotemporal-Dependent Confinement Effect of Bubble Swarms Enables a Fractal Hierarchical Assembly with Promoted Chirality. J Am Chem Soc 2024; 146:18104-18116. [PMID: 38899355 DOI: 10.1021/jacs.4c05141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
The submarine-confined bubble swarm is considered an important constraining environment for the early evolution of living matter due to the abundant gas/water interfaces it provides. Similarly, the spatiotemporal characteristics of the confinement effect in this particular scenario may also impact the origin, transfer, and amplification of chirality in organisms. Here, we explore the confinement effect on the chiral hierarchical assembly of the amphiphiles in the confined bubble array stabilized by the micropillar templates. Compared with the other confinement conditions, the assembly in the bubble scenario yields a fractal morphology and exhibits a unique level of the chiral degree, ordering, and orientation consistency, which can be attributed to the characteristic interfacial effects of the rapidly formed gas/water interfaces. Thus, molecules with a balanced amphiphilicity can be more favorable for the promotion. Not limited to the pure enantiomers, chiral amplification of the enantiomer-mixed assembly is observed only in the bubble scenario. Beyond the interfacial mechanism, the fast formation kinetics of the confined liquid bridges in the bubble scenario endows the assembly with the tunable hierarchical morphology when regulating the amphiphilicity, aggregates, and confined spaces. Furthermore, the chiral-induced spin selectivity (CISS) effect of the fractal hierarchical assembly was systematically investigated, and a strategy based on photoisomerization was developed to efficiently modulate the CISS effect. This work provides insights into the robustness of confined bubble swarms in promoting a chiral hierarchical assembly and the potential applications of the resulting chiral hierarchical patterns in solid-state spintronic and optical devices.
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Affiliation(s)
- Jie Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Guanghui Ouyang
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Peng Zhou
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Peng Shang
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Haoran Long
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
| | - Lukang Ji
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Zhiyuan Qu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Mengmeng Guo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yongrui Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fenggui Zhao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Xiaodong Yin
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Yubin Ke
- Spallation Neutron Source Science Center, Dongguan 523803, P. R. China
| | - Zhongming Wei
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
| | - Zhen Zhang
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xuehai Yan
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Minghua Liu
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yali Qiao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yanlin Song
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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Albano G, Pescitelli G, Di Bari L. Chiroptical Properties in Thin Films of π-Conjugated Systems. Chem Rev 2020; 120:10145-10243. [PMID: 32892619 DOI: 10.1021/acs.chemrev.0c00195] [Citation(s) in RCA: 246] [Impact Index Per Article: 61.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chiral π-conjugated molecules provide new materials with outstanding features for current and perspective applications, especially in the field of optoelectronic devices. In thin films, processes such as charge conduction, light absorption, and emission are governed not only by the structure of the individual molecules but also by their supramolecular structures and intermolecular interactions to a large extent. Electronic circular dichroism, ECD, and its emission counterpart, circularly polarized luminescence, CPL, provide tools for studying aggregated states and the key properties to be sought for designing innovative devices. In this review, we shall present a comprehensive coverage of chiroptical properties measured on thin films of organic π-conjugated molecules. In the first part, we shall discuss some general concepts of ECD, CPL, and other chiroptical spectroscopies, with a focus on their applications to thin film samples. In the following, we will overview the existing literature on chiral π-conjugated systems whose thin films have been characterized by ECD and/or CPL, as well other chiroptical spectroscopies. Special emphasis will be put on systems with large dissymmetry factors (gabs and glum) and on the application of ECD and CPL to derive structural information on aggregated states.
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Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
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Abstract
Azobenzene is the most extensively used class of chromophore in a large variety of applications.
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Affiliation(s)
- Estelle Léonard
- Sorbonne Universités
- Université de Technologie de Compiègne
- Ecole Supérieure de Chimie Organique et Minérale
- EA4297 Transformations Chimiques de la Matière Renouvelable
- Centre de Recherche Royallieu
| | - Floriane Mangin
- Sorbonne Universités
- Université de Technologie de Compiègne
- Ecole Supérieure de Chimie Organique et Minérale
- EA4297 Transformations Chimiques de la Matière Renouvelable
- Centre de Recherche Royallieu
| | - Carole Villette
- Sorbonne Universités
- Université de Technologie de Compiègne
- Ecole Supérieure de Chimie Organique et Minérale
- EA4297 Transformations Chimiques de la Matière Renouvelable
- Centre de Recherche Royallieu
| | - Muriel Billamboz
- Sorbonne Universités
- Université de Technologie de Compiègne
- Ecole Supérieure de Chimie Organique et Minérale
- EA4297 Transformations Chimiques de la Matière Renouvelable
- Centre de Recherche Royallieu
| | - Christophe Len
- Sorbonne Universités
- Université de Technologie de Compiègne
- Ecole Supérieure de Chimie Organique et Minérale
- EA4297 Transformations Chimiques de la Matière Renouvelable
- Centre de Recherche Royallieu
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Rubia-Payá C, de Miguel G, Martín-Romero MT, Giner-Casares JJ, Camacho L. UV-Vis Reflection-Absorption Spectroscopy at air-liquid interfaces. Adv Colloid Interface Sci 2015; 225:134-45. [PMID: 26385430 DOI: 10.1016/j.cis.2015.08.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 08/27/2015] [Accepted: 08/27/2015] [Indexed: 11/26/2022]
Abstract
UV-Visible Reflection-Absorption Spectroscopy (UVRAS) technique is reviewed with a general perspective on fundamental and applications. UVRAS is formally identical to IR Reflection-Absorption Spectroscopy (IRRAS), and therefore, the methodology developed for this IR technique can be applied in the UV-visible region. UVRAS can be applied to air-solid, air-liquid or liquid-liquid interfaces. This review focuses on the use of UVRAS for studying Langmuir monolayers. We introduce the theoretical framework for a successful understanding of the UVRAS data, and we illustrate the usage of this data treatment to a previous study from our group comprising an amphiphilic porphyrin. For ultrathin films with a thickness of few nm, UVRAS produces positive or negative bands when p-polarized radiation is used, depending on the incidence angle and the orientation of dipole absorption. UVRAS technique provides highly valuable information on tilt of chromophores at the air-liquid interface, and moreover allows the determination of optical parameters. We propose UVRAS as a powerful technique to investigate the in situ optical properties of Langmuir monolayers.
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Osorio HM, Martín S, López MC, Marqués-González S, Higgins SJ, Nichols RJ, Low PJ, Cea P. Electrical characterization of single molecule and Langmuir-Blodgett monomolecular films of a pyridine-terminated oligo(phenylene-ethynylene) derivative. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:1145-57. [PMID: 26171291 PMCID: PMC4464395 DOI: 10.3762/bjnano.6.116] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 04/13/2015] [Indexed: 05/27/2023]
Abstract
Monolayer Langmuir-Blodgett (LB) films of 1,4-bis(pyridin-4-ylethynyl)benzene (1) together with the "STM touch-to-contact" method have been used to study the nature of metal-monolayer-metal junctions in which the pyridyl group provides the contact at both molecule-surface interfaces. Surface pressure vs area per molecule isotherms and Brewster angle microscopy images indicate that 1 forms true monolayers at the air-water interface. LB films of 1 were fabricated by deposition of the Langmuir films onto solid supports resulting in monolayers with surface coverage of 0.98 × 10(-9) mol·cm(-2). The morphology of the LB films that incorporate compound 1 was studied using atomic force microscopy (AFM). AFM images indicate the formation of homogeneous, monomolecular films at a surface pressure of transference of 16 mN·m(-1). The UV-vis spectra of the Langmuir and LB films reveal that 1 forms two dimensional J-aggregates. Scanning tunneling microscopy (STM), in particular the "STM touch-to-contact" method, was used to determine the electrical properties of LB films of 1. From these STM studies symmetrical I-V curves were obtained. A junction conductance of 5.17 × 10(-5) G 0 results from the analysis of the pseudolinear (ohmic) region of the I-V curves. This value is higher than that of the conductance values of LB films of phenylene-ethynylene derivatives contacted by amines, thiols, carboxylate, trimethylsilylethynyl or acetylide groups. In addition, the single molecule I-V curve of 1 determined using the I(s) method is in good agreement with the I-V curve obtained for the LB film, and both curves fit well with the Simmons model. Together, these results not only indicate that the mechanism of transport through these metal-molecule-metal junctions is non-resonant tunneling, but that lateral interactions between molecules within the LB film do not strongly influence the molecule conductance. The results presented here complement earlier studies of single molecule conductance of 1 using STM-BJ methods, and support the growing evidence that the pyridyl group is an efficient and effective anchoring group in sandwiched metal-monolayer-metal junctions prepared under a number of different conditions.
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Affiliation(s)
- Henrry Marcelo Osorio
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Nanociencia de Aragón (INA), Edificio I+D, Campus Rio Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, 50017 Zaragoza, Spain
- Laboratorio de Microscopias Avanzadas (LMA) C/Mariano Esquilor s/n, Campus Rio Ebro, 50018 Zaragoza, Spain
| | - Santiago Martín
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - María Carmen López
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Nanociencia de Aragón (INA), Edificio I+D, Campus Rio Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, 50017 Zaragoza, Spain
| | | | - Simon J Higgins
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Richard J Nichols
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Paul J Low
- Department of Chemistry, University of Durham, Durham DH1 3LE, United Kingdom
- School of Chemistry and Biochemistry, University of Western Australia, Crawley 6009, WA, Australia
| | - Pilar Cea
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Nanociencia de Aragón (INA), Edificio I+D, Campus Rio Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, 50017 Zaragoza, Spain
- Laboratorio de Microscopias Avanzadas (LMA) C/Mariano Esquilor s/n, Campus Rio Ebro, 50018 Zaragoza, Spain
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6
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Jiménez J, Pintre I, Gascón E, Sánchez-Somolinos C, Alcalá R, Cavero E, Serrano JL, Oriol L. Photoresponsive Liquid-Crystalline Dendrimers Based on a Cyclotriphosphazene Core. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201400190] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Josefina Jiménez
- Dpto. Química Inorgánica; Facultad de Ciencias-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Inmaculada Pintre
- Dpto. Química Inorgánica; Facultad de Ciencias-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Elena Gascón
- Dpto. Química Inorgánica; Facultad de Ciencias-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Carlos Sánchez-Somolinos
- Dpto. Física de la Materia Condensada; Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón (ICMA); Universidad de Zaragoza-CSIC; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Rafael Alcalá
- Dpto. Física de la Materia Condensada; Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón (ICMA); Universidad de Zaragoza-CSIC; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Emma Cavero
- Dpto. Química Orgánica; Facultad de Ciencias-Instituto de Nanociencia de Aragón (INA); Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - José Luis Serrano
- Dpto. Química Orgánica; Facultad de Ciencias-Instituto de Nanociencia de Aragón (INA); Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Luis Oriol
- Dpto. Química Orgánica; Facultad de Ciencias-Instituto de Ciencia de Materiales de Aragón (ICMA); Universidad de Zaragoza-CSIC; Pedro Cerbuna 12 50009 Zaragoza Spain
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7
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Roldán-Carmona C, Rubia-Payá C, Pérez-Morales M, Martín-Romero MT, Giner-Casares JJ, Camacho L. UV-Vis reflection spectroscopy under variable angle incidence at the air–liquid interface. Phys Chem Chem Phys 2014; 16:4012-22. [DOI: 10.1039/c3cp54658f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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8
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Pulido-Companys A, Albalat R, Garcia-Amorós J, Velasco D, Ignés-Mullol J. Supramolecular organization and heterochiral recognition in Langmuir monolayers of chiral azobenzene surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:9635-9642. [PMID: 23837787 DOI: 10.1021/la4006407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We study the self-assembly of novel azobenzene-based chiral surfactants at the air/water interface, and find that while the pure enantiomers lack the ability to organize in ordered mesophases, the racemic mixture spontaneously forms a hexatic phase at low lateral pressures, which we detect by means of Brewster angle microscopy. This work provides a unique example of heterochiral recognition in which the racemic monolayer is not only condensed with respect to the pure enantiomers, but causes an ordered mesophase to form. Although hexatic order vanishes at high surface pressures, long-range orientational order is regained for all compositions upon monolayer collapse, which proceeds through the formation of birefringent trilayers with a well-defined lateral microstructure, as revealed by atomic force microscopy.
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Affiliation(s)
- Alba Pulido-Companys
- Departament de Química Física, Institute of Nanoscience and Nanotechnology, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
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9
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Optical storage in azobenzene-containing epoxy polymers processed as Langmuir Blodgett films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1403-8. [DOI: 10.1016/j.msec.2012.12.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 11/13/2012] [Accepted: 12/05/2012] [Indexed: 11/24/2022]
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10
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Ballesteros LM, Martín S, Cortés J, Marqués-González S, Higgins SJ, Nichols RJ, Low PJ, Cea P. Controlling the Structural and Electrical Properties of Diacid Oligo(Phenylene Ethynylene) Langmuir-Blodgett Films. Chemistry 2013; 19:5352-63. [DOI: 10.1002/chem.201203261] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 12/23/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Luz Marina Ballesteros
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza 50009, Spain
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11
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Liu L, Zhang L, Wang T, Liu M. Interfacial assembly of amphiphilic styrylquinoxalines: alkyl chain length tunable topochemical reactions and supramolecular chirality. Phys Chem Chem Phys 2013; 15:6243-9. [DOI: 10.1039/c3cp50384d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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12
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Li BS, Lam JWY, Yu ZQ, Tang BZ. Tunable helical assemblies of L-alanine methyl ester-containing polyphenylacetylene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5770-5774. [PMID: 22413849 DOI: 10.1021/la300061u] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The self-assemblying behaviors of L-alanine methyl ester-containing polyphenylacetylene (PPA-Ala, in Chart 1 ) were investigated upon the evaporation of its solvent on mica and on air/water interfaces. The introduction of chiral amino acid attachments to the polyphenylacetylene backbone induced a helical conformation of the backbone, which was stabilized by various noncovalent interactions, especially hydrophobic effect and hydrogen bonds. The helicity of the polymer was further amplified in its higher-order self-assemblies as the formation of helical fibers on the surface of mica upon natural evaporation of its THF solution. By LB technique, the polymer chains were guided to form ordered parallel ridges and highly aligned, with their helical conformation still remaining. The reorganization of the chiral polymer chains on air/water interface was associated with the additional hydrophobic effect of PPA-Ala on an air/water interface. The polymer backbones had to adopt different arrangements to minimize their contact with water, and this adjustment led to the formation of aligned polymer ridges under proper surface pressure.
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Affiliation(s)
- Bing Shi Li
- School of Chemistry, Shenzhen University, Shenzhen, China.
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13
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Clemente MJ, Tejedor RM, Romero P, Fitremann J, Oriol L. Maltose-based gelators having azobenzene as light-sensitive unit. RSC Adv 2012. [DOI: 10.1039/c2ra21506c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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14
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Giner I, Haro M, Gascón I, Barrio JD, Carmen López M. Air–water interfacial behavior of linear-dendritic block copolymers containing PEG and azobenzene chromophores. J Colloid Interface Sci 2011; 359:389-98. [DOI: 10.1016/j.jcis.2011.03.091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 03/24/2011] [Accepted: 03/26/2011] [Indexed: 11/30/2022]
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15
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Pan X, Jiang H, Wang Y, Lei Z, Zou G, Zhang Q, Wang K. Supramolecular chirality formation of bisazobenzene-substituted polydiacetylene LB films. J Colloid Interface Sci 2011; 354:880-6. [DOI: 10.1016/j.jcis.2010.11.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Revised: 11/17/2010] [Accepted: 11/19/2010] [Indexed: 10/18/2022]
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16
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Preparation and characterization of Langmuir and Langmuir–Blodgett films from a pyridine-terminated stilbene. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.06.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage. J Colloid Interface Sci 2010; 346:87-95. [DOI: 10.1016/j.jcis.2010.02.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2009] [Revised: 02/25/2010] [Accepted: 02/26/2010] [Indexed: 11/17/2022]
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19
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Thakur G, Micic M, Leblanc RM. Surface chemistry of Alzheimer's disease: a Langmuir monolayer approach. Colloids Surf B Biointerfaces 2009; 74:436-56. [PMID: 19726167 DOI: 10.1016/j.colsurfb.2009.07.043] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 07/28/2009] [Accepted: 07/29/2009] [Indexed: 12/14/2022]
Abstract
Amyloid beta (1-40) and (1-42) peptides are the major constituents of hallmark senile plaques found in Alzheimer's disease (AD) patients. Study of aggregation of Abeta (1-40) and (1-42) peptides and the truncated Abeta fragments could lead towards the mechanism of AD. Langmuir monolayer approach is one of the excellent methods to investigate the mechanism and origin of AD. Particularly, to study the steps involved in the formation and assembly of beta-sheet structures leading to formation of amyloid fibrils. Surface pressure- and surface potential-area isotherms provide information regarding the nature of short-range and long-range interactions between the molecules especially the lipids and the Abeta peptides. Spectroscopic methods like IRRAS, PM-IRRAS, FTIR-ATR, and GIXD at the air-water interface provide insight into the structural characterization, and orientation of the molecules in the Langmuir monolayer.
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Affiliation(s)
- Garima Thakur
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146, United States
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