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Yu L, Li S, Lu Y, Wang Z, Fu M, Wei S, Xu C, Wang Q, Liu X, Wang L. Phase Transitions of Naphthalene-2,3-carbonitride Steered by Solvent Effects and Metal Ion Concentration Variation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1072-1078. [PMID: 38154099 DOI: 10.1021/acs.langmuir.3c03328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
The delicate regulation of structural phase transition can provide advanced approaches for fabricating desired and well-organized nanoarchitectures on surfaces. Introduction of metal ions into pure organic systems can facilitate the phase transition from hydrogen-bonded structures to metal-organic structures by coordinating with organic molecules. However, it remains a challenge to attain a phase transition dominated by variable metal coordination configurations through adjustment of the metal ion concentration. Herein, we report the phase transitions of naphthalene-2,3-carbonitride (2,3-DCN) molecules on highly oriented pyrolytic graphite (HOPG) under varying solvents and Cu2+ ion concentrations. By integrating data from scanning tunneling microscopy imaging and density functional theory calculations, it is demonstrated that phase transitions of 2,3-DCN occur through forming diverse coordination configurations where Cu2+ ions can coordinate with 2,3-DCN and 1-nonanoic acid or Cl- ions to form different ligand components with a coordination number of 4 when varying the molar ratios of 2,3-DCN to Cu2+ ion in the 1-nonanoic acid solvent. However, in the case of 1-heptanoic acid as a solvent, the self-assembly structure of 2,3-DCN only changes via the alteration of hydrogen bonding sites and Cu2+ ions do not coordinate with 2,3-DCN molecules. These findings provide valuable insights into the coordination behavior of metal ions in different solvents.
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Affiliation(s)
- Longnan Yu
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Sihao Li
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Yan Lu
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Zhongping Wang
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Mingming Fu
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Sheng Wei
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Changgang Xu
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Qing Wang
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Xiaoqing Liu
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Li Wang
- Department of Physics, Nanchang University, Nanchang 330031, China
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2
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Peng X, Meng T, Wang L, Cheng L, Zhai W, Deng K, Ma CQ, Zeng Q. Self-assembled nanostructures of a series of linear oligothiophene derivatives adsorbed on surfaces. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Miao X, Cai Z, Li J, Liu L, Wu J, Li B, Ying L, Silly F, Deng W, Cao Y. Elucidating Halogen‐Assisted Self‐Assembly Enhanced Mechanochromic Aggregation‐Induced Emission. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100041] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Xinrui Miao
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Zhengkai Cai
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Jinxing Li
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Liqian Liu
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Juntian Wu
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Bang Li
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Lei Ying
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Fabien Silly
- Université Paris-Saclay CEA CNRS SPEC TITANS Gif sur Yvette 91191 France
| | - Wenli Deng
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices College of Materials Science and Engineering South China University of Technology Guangzhou 510640 P.R. China
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4
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Pang P, Wang Y, Miao X, Li B, Deng W. Halogen bonding controlled 2D self-assembled polymorphism of regioisomeric thienophenanthrene derivatives by coadsorption. NEW J CHEM 2021. [DOI: 10.1039/d1nj00203a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
5,10-BTD-C14 molecules display self-assembled polymorphism in different bromo-hydrocarbons with different solution concentrations at the liquid/solid interface.
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Affiliation(s)
- Peng Pang
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Yi Wang
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Xinrui Miao
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Bang Li
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Wenli Deng
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
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5
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Wei Li, Xu S, Cai Y, Wu S, He H. Direct Observation of Guanine and Water Supramolecular Assemblies. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420130129] [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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6
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Halogen Bonds Fabricate 2D Molecular Self-Assembled Nanostructures by Scanning Tunneling Microscopy. CRYSTALS 2020. [DOI: 10.3390/cryst10111057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Halogen bonds are currently new noncovalent interactions due to their moderate strength and high directionality, which are widely investigated in crystal engineering. The study about supramolecular two-dimensional architectures on solid surfaces fabricated by halogen bonding has been performed recently. Scanning tunneling microscopy (STM) has the advantages of realizing in situ, real-time, and atomic-level characterization. Our group has carried out molecular self-assembly induced by halogen bonds at the liquid–solid interface for about ten years. In this review, we mainly describe the concept and history of halogen bonding and the progress in the self-assembly of halogen-based organic molecules at the liquid/graphite interface in our laboratory. Our focus is mainly on (1) the effect of position, number, and type of halogen substituent on the formation of nanostructures; (2) the competition and cooperation of the halogen bond and the hydrogen bond; (3) solution concentration and solvent effects on the molecular assembly; and (4) a deep understanding of the self-assembled mechanism by density functional theory (DFT) calculations.
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Ramya S, Nataraj D, Krishnan S, Premkumar S, Thrupthika T, Sangeetha A, Senthilkumar K, Thangadurai TD. Aggregation induced emission behavior in oleylamine acetone system and its application to get improved photocurrent from In 2S 3 quantum dots. Sci Rep 2020; 10:19712. [PMID: 33184365 PMCID: PMC7661720 DOI: 10.1038/s41598-020-76703-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 09/22/2020] [Indexed: 11/09/2022] Open
Abstract
Blue emission giving nanoscale molecular clusters of Oleylamine-Acetone system was formed by an aging assisted hydrogen bond formation between the interacting molecular systems, at room temperature. The as-formed nanoscale molecular clusters were found to be self-assembled into flower-like aggregates and shifted the emission wavelength to red colour depicting an exciton delocalization in the aggregate system. Interestingly aging process has also produced imine type binding between Oleylamine and Acetone due to the condensation reaction. The experimental conditions and formation mechanism of hydrogen bond assisted Oleylamine-Acetone molecular aggregates and imine bond assisted Oleylamine-Acetone is elaborated in this paper in a systematic experimental approach with suitable theory. Finally we have introduced this Acetone assisted aging process in In2S3 QD system prepared with Oleylamine as functional molecules. It was found that the aging process has detached Oleylamine from QD surface and as a consequence In2S3 QD embedded Oleylamine-Acetone aggregates was obtained. When this In2S3 QD embedded molecular cluster system was used as an active layer in a photo conductor device then a maximum photo current value of the order of milli Ampere was obtained. The surfactant molecules normally inhibit the charge transport between QD systems and as a result it is always problematic to have the functional molecules in the QD based transport devices. Our approach has a solution to this problem and the present paper discusses the outcome of the results in detail.
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Affiliation(s)
- Subramaniam Ramya
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Devaraj Nataraj
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India.
- UGC-CPEPA Centre for Advanced Studies in Physics for the Development of Solar Energy Materials and Devices, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India.
| | - Sangameswaran Krishnan
- Molecular Quantum Mechanics Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Sellan Premkumar
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
- School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
- School of Material Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Thankappan Thrupthika
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Arumugam Sangeetha
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Kittusamy Senthilkumar
- Molecular Quantum Mechanics Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - T Daniel Thangadurai
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, 641022, India
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Caballero-Quintana I, Amargós-Reyes O, Maldonado JL, Nicasio-Collazo J, Romero-Borja D, Barreiro-Argüelles D, Molnár G, Bousseksou A. Scanning Probe Microscopy Analysis of Nonfullerene Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29520-29527. [PMID: 32466653 DOI: 10.1021/acsami.0c06048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, scanning probe microscopies (SPMs) are used for the analysis of PBDB-T, ITIC, and PBDB-T:ITIC layers of solar cells (OSCs). Scanning tunneling microscopy (STM) images of PBDB-T reveal that thin films (<1 nm) tend to form worm-like pattern (amorphous type) domains with an average chain-to-chain distance of 950 pm; likewise, STM images of ITIC show that side arms form chain-like patterns. STM images of PBDB-T:ITIC blend suggest why PBDB-T domains could facilitate charge dissociation. Further, a strong interchain π-π interaction of the ITIC molecules could promote self-organization, and under the mutual interaction with the PBDB-T polymer, it could influence the pathway formation for electron transport. Moreover, when correlating electrostatic force microscopy (EFM) and photoconductive atomic force microscopy (pc-AFM), the blend morphology and its electrical/electronic properties are determined; the ideal domain size of PBDB-T:ITIC blend phases for maximizing the generated photocurrent is 15-35 nm. Furthermore, phase contrast and surface electric potential characteristics with Kelvin probe force microscopy (KPFM) are measured to examine additional details about the surface and potential changes due to the domain differences in the active layer. OSCs based on the nonfullerene PBDB-T:ITIC active layer reach an average power conversion efficiency (PCE) of 9.1% (best 9.2%).
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Affiliation(s)
- Irving Caballero-Quintana
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, A.P. 1-948, 37150 León, Guanajuato, México
| | - Olivia Amargós-Reyes
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, A.P. 1-948, 37150 León, Guanajuato, México
| | - José-Luis Maldonado
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, A.P. 1-948, 37150 León, Guanajuato, México
| | - Juan Nicasio-Collazo
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, A.P. 1-948, 37150 León, Guanajuato, México
| | - Daniel Romero-Borja
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, A.P. 1-948, 37150 León, Guanajuato, México
| | - Denisse Barreiro-Argüelles
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, A.P. 1-948, 37150 León, Guanajuato, México
- Laboratorio de Fisicoquı́mica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), CU, Coyoacán, 04510, Ciudad de México, México
| | - Gábor Molnár
- LCC, CNRS & University of Toulouse, 205 Route de Narbonne, BP44099, 31077 Toulouse Cedex 4, France
| | - Azzedine Bousseksou
- LCC, CNRS & University of Toulouse, 205 Route de Narbonne, BP44099, 31077 Toulouse Cedex 4, France
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9
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Li JK, Shao MY, Yu M, Zhang W, Yang ZY, Yu G, Xu J, Cui W. Revealing the Influences of Solvent Boiling Point and Alkyl Chains on the Adlayer Crystallinity of Furan-Diketopyrrolopyrrole-Thienylene Copolymer at Molecular Level. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:141-147. [PMID: 31841009 DOI: 10.1021/acs.langmuir.9b02604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Crystallinity of the polymer poly(3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-altthieylenevinylene) (PDVF) adlayers casted from low-boiling-point (L-bp), medium-bp (M-bp), and high-bp (H-bp) solvents was investigated through scanning tunneling microscopy (STM) and analyzed by the assistance of Hansen solubility parameter (HSP) theory and molecular dynamics (MD) simulations. Crystallinity of the PDVF adlayers increases evidently from the L- to H-bp solvents. Also, the solvent with an alkyl chain such as ethylbenzene (EB) facilitates in improving the crystallinity than the one without an alkyl chain such as chlorobenzene (CB) if the solvent bp is present in the same group. The HSP space discloses that EB is a marginal solvent for PDVF in contrast to CB. Quasi-isolate PDVF in the EB solution revealed by MD simulations facilitates the formation of crystallized domains through surface assembling mechanism. However, in CB, interconnected PDVF molecules through intermolecular overlapping tend to generate amorphous structures through direct deposition of the preformed structures in solution.
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Affiliation(s)
- Jin-Kuo Li
- School of Chemical Sciences , University of Chinese Academy of Sciences , 19A Yuquanlu , Beijing 100049 , P. R. China
| | - Ming-Yue Shao
- School of Chemical Sciences , University of Chinese Academy of Sciences , 19A Yuquanlu , Beijing 100049 , P. R. China
| | - Miao Yu
- School of Chemical Sciences , University of Chinese Academy of Sciences , 19A Yuquanlu , Beijing 100049 , P. R. China
| | - Weifeng Zhang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , 2 Zhongguancun North First Street , Beijing 100190 , P. R. China
| | - Zhi-Yong Yang
- School of Chemical Sciences , University of Chinese Academy of Sciences , 19A Yuquanlu , Beijing 100049 , P. R. China
| | - Gui Yu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , 2 Zhongguancun North First Street , Beijing 100190 , P. R. China
| | - Jingcheng Xu
- School of Materials Science and Engineering , University of Shanghai for Science and Technology , 516 Jungong Road , Shanghai 200093 , P. R. China
| | - Wei Cui
- School of Chemical Sciences , University of Chinese Academy of Sciences , 19A Yuquanlu , Beijing 100049 , P. R. China
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10
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Peng X, Zhao F, Peng Y, Li J, Zeng Q. Dynamic surface-assisted assembly behaviours mediated by external stimuli. SOFT MATTER 2020; 16:54-63. [PMID: 31712788 DOI: 10.1039/c9sm01847f] [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
Supramolecular self-assembly behaviors on solid substrates have been widely investigated in the last few decades. Owing to the complexity of interfacial assembly systems, the precise regulation of supramolecular nanostructures is still challenging and waits to be solved. The supramolecular nanostructures are governed by non-covalent bonds, so they can be disrupted and influenced by an external environment. In this review, the dynamic supramolecular nanostructures that are mediated by external stimuli containing guest species, light irradiation, temperature and electric field are discussed in detail. The research studies mentioned in this article are all accomplished by STM, and the effects of these external stimuli on the assembled nanostructures have been elucidated exhaustively here.
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Affiliation(s)
- Xuan Peng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China. and Center of Materials Science and Optoelectonics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fengying Zhao
- Jiangxi College of Applied Technology, Ganzhou 341000, China. and Engineering Research Center of Nano-Geo Materials of Ministry of Education, P. R. China University of Geosciences, Wuhan 430074, China
| | - Yang Peng
- Jiangxi College of Applied Technology, Ganzhou 341000, China. and Engineering Research Center of Nano-Geo Materials of Ministry of Education, P. R. China University of Geosciences, Wuhan 430074, China
| | - Jing Li
- Jiangxi College of Applied Technology, Ganzhou 341000, China. and Engineering Research Center of Nano-Geo Materials of Ministry of Education, P. R. China University of Geosciences, Wuhan 430074, China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China. and Center of Materials Science and Optoelectonics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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11
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Nishitani N, Hirose T, Matsuda K. 2-D Self-assembly of Alkyl-substituted Oligophenylene Derivatives at the Liquid/Solid Interface: Influence of Core Size and Hydrogen Bonds on the Nucleation–Elongation Process. CHEM LETT 2019. [DOI: 10.1246/cl.180944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Nobuhiko Nishitani
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takashi Hirose
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kenji Matsuda
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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12
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Zha B, Li J, Wu J, Miao X, Zhang M. Cooperation and competition of hydrogen and halogen bonds in 2D self-assembled nanostructures based on bromine substituted coumarins. NEW J CHEM 2019. [DOI: 10.1039/c9nj04726c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three coumarin derivatives (Co16, 6-Br-Co16 and 6,8-Br-Co16) with ester, ether, and carbonyl groups and different numbers of bromine substituents on the coumarin cores were synthesized.
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Affiliation(s)
- Bao Zha
- School of Electronic and Computer Engineering
- Peking University
- Shenzhen 518055
- People's Republic of China
- Shenzhen China Star Optoelectronics Technology Co., Ltd
| | - Jinxing Li
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
| | - Juntian Wu
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
| | - Xinrui Miao
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
| | - Min Zhang
- School of Electronic and Computer Engineering
- Peking University
- Shenzhen 518055
- People's Republic of China
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13
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Xu X, Li W, Xu C, Liu N. Construction of halogen and hydrogen bond-based multicomponent nanostructures at liquid-solid interface. SURF INTERFACE ANAL 2018. [DOI: 10.1002/sia.6459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xuming Xu
- Department of Physics; Nanchang University; Nanchang 330031 China
| | - Wei Li
- Department of Science; Nanchang Institute of Technology; Nanchang 330099 China
| | - Chengyong Xu
- Department of Science; Nanchang Institute of Technology; Nanchang 330099 China
| | - Ning Liu
- Department of Science; Nanchang Institute of Technology; Nanchang 330099 China
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14
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Ayzac V, Raynal M, Isare B, Idé J, Brocorens P, Lazzaroni R, Etienne T, Monari A, Assfeld X, Bouteiller L. Probing halogen-halogen interactions in solution. Phys Chem Chem Phys 2017; 19:32443-32450. [PMID: 29186230 DOI: 10.1039/c7cp06996k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Halogen-halogen interactions are a particularly interesting class of halogen bonds that are known to be essential design elements in crystal engineering. In solution, it is likely that halogen-halogen interactions also play a role, but the weakness of this interaction makes it difficult to characterize or even simply detect. We have designed a supramolecular balance that allows detecting BrBr interactions between CBr3 groups in solution and close to room temperature. The sensitivity and versatility of the chosen platform have allowed accumulating consistent data. In halogenoalkane solvents, we propose estimates for the free energy of these weak halogen bond interactions. In toluene solutions, we show that the interactions between Br atoms and the solvent aromatic groups dominate over the BrBr interactions.
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Affiliation(s)
- V Ayzac
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France.
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15
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Halogen Bonds Formed between Substituted Imidazoliums and N Bases of Varying N-Hybridization. Molecules 2017; 22:molecules22101634. [PMID: 28961202 PMCID: PMC6151534 DOI: 10.3390/molecules22101634] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 12/16/2022] Open
Abstract
Heterodimers are constructed containing imidazolium and its halogen-substituted derivatives as Lewis acid. N in its sp³, sp² and sp hybridizations is taken as the electron-donating base. The halogen bond is strengthened in the Cl < Br < I order, with the H-bond generally similar in magnitude to the Br-bond. Methyl substitution on the N electron donor enhances the binding energy. Very little perturbation arises if the imidazolium is attached to a phenyl ring. The energetics are not sensitive to the hybridization of the N atom. More regular patterns appear in the individual phenomena. Charge transfer diminishes uniformly on going from amine to imine to nitrile, a pattern that is echoed by the elongation of the C-Z (Z=H, Cl, Br, I) bond in the Lewis acid. These trends are also evident in the Atoms in Molecules topography of the electron density. Molecular electrostatic potentials are not entirely consistent with energetics. Although I of the Lewis acid engages in a stronger bond than does H, it is the potential of the latter which is much more positive. The minimum on the potential of the base is most negative for the nitrile even though acetonitrile does not form the strongest bonds. Placing the systems in dichloromethane solvent reduces the binding energies but leaves intact most of the trends observed in vacuo; the same can be said of ∆G in solution.
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Nishitani N, Hirose T, Matsuda K. Influence of Multidirectional Interactions on Domain Size and Shape of 2-D Molecular Assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:9151-9159. [PMID: 28783345 DOI: 10.1021/acs.langmuir.7b02094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The effect of molecule-molecule interactions on the size and shape of two-dimensional (2-D) ordering domains was investigated using scanning tunneling microscopy (STM) at the liquid/solid interface. Synthesized alkoxybenzene derivatives bearing amide group tend to form very large domains of 2-D orderings (>0.25 μm2), whereas the domain size of corresponding urea derivatives was significantly small in the same condition. The quantitative analysis of the concentration dependence of surface coverage using a nucleation-elongation model suggests that the replacement of amide functionality by urea increased the equilibrium constant of the nucleation process of 2-D self-assembly, which is a key factor for the domain size at the liquid/solid interface. Interestingly, the STM observation revealed that a slight difference of molecular structure influences the shape of 2-D ordering domains, and needle-shaped domains with large aspect ratio around 10 were observed by tuning molecule-molecule intramolecular interactions in 2-D self-assembly formed at a liquid/graphite interface.
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Affiliation(s)
- Nobuhiko Nishitani
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University , Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takashi Hirose
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University , Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kenji Matsuda
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University , Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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