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Cuerva C, Cano M, Schmidt R. Improving the mesomorphism in bispyrazolate Pd(II) metallomesogens: an efficient platform for ionic conduction. Dalton Trans 2023; 52:4684-4691. [PMID: 36779291 DOI: 10.1039/d2dt03754h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
The introduction of structural asymmetry in metallomesogens is an established strategy to improve their mesomorphic behaviour in terms of lower melting temperatures and higher stability ranges of the mesophase, which is particularly important for metallomesogens that have potential application as electrolytes that require wide operational temperature ranges. Here in this work, a novel series of unsymmetrical bis(isoquinolinylpyrazolate)palladium(II) compounds bearing four alkyl side-chains with different lengths are described. Rectangular and hexagonal columnar mesophases were formed with low melting temperatures of 42-45 °C in most cases, whereas the clearing temperatures reached values up to 412 °C. The charge transport properties have been studied by complex impedance spectroscopy, showing that the mesophase favours proton conduction in the absence of water or humidity. The exceptional thermal stability of these species makes them promising candidates to act as a platform for ionic conduction via the nanochannels originated in the columnar mesophases. The results presented confirm that introducing structural asymmetry in the Pd(II) metallomesogens studied is a valid strategy to enhance the liquid crystalline properties, which opens new ways to develop water-free electrolytes based on unsymmetrical bis(isoquinolinylpyrazolate) Pd(II) compounds for potential applications such as proton exchange membranes (PEMs).
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Affiliation(s)
- Cristián Cuerva
- MatMoPol Group. Department of Inorganic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Ciudad Universitaria, E-28040 Madrid, Spain.
| | - Mercedes Cano
- MatMoPol Group. Department of Inorganic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Ciudad Universitaria, E-28040 Madrid, Spain.
| | - Rainer Schmidt
- GFMC. Departamento de Física de Materiales, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain.
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2
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Xing Y, Li Z, Baryshnikov GV, Shen S, Ye D, Ågren H, Zhu L. Water Molecular Bridge-Induced Selective Dual Polarization in Crystals for Stable Multi-Emitter. Chem Sci 2022; 13:6067-6073. [PMID: 35685795 PMCID: PMC9132028 DOI: 10.1039/d2sc00908k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/25/2022] [Indexed: 11/21/2022] Open
Abstract
In the solid state, the molecular polarization of donor–acceptor (D–A) molecules can be implemented in a simple way via the use of an external polarizing source (e.g., an electric field). However, internal chemical polarization approaches are less studied due to difficulties related to controlling the charge-separation orientation in the solid state. Herein, a series of D–A molecules with both a proton donor and an acceptor were designed. Water-based molecular bridges were then established in their crystal structures, which firmly and alternately connected the proton donor of one molecule and the acceptor of another via an intermolecular H-bond network. In this way, the selective dual polarization of a phenolic hydroxyl group and a pyridinyl group could be achieved, owing to the strengthening of the charge-separation orientation upon the simultaneous deprotonation and protonation of the D–A molecules. This effect led to a 3–5-fold amplification of the molecular dipole moment in the crystal form relative to the monomeric state. On this basis, multi-excitation and multi-emission characteristics were achieved in these charge-separated crystals, endowing them with the ability to visually detect the energy of a light source, covering a wide range of the UV-Vis spectral region. This work provides a practical chemical approach for developing intrinsically polarized systems that can exhibit stable but distinct molecular photophysical properties. In the solid state, the molecular polarization of donor–acceptor (D–A) molecules can be implemented by internal chemical polarization approaches.![]()
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Affiliation(s)
- Yi Xing
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University Shanghai 200438 China
| | - Zhongyu Li
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University Shanghai 200438 China
| | - Glib V Baryshnikov
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University 60174 Norrköping Sweden
| | - Shen Shen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University Shanghai 200438 China
| | - Danfeng Ye
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University Shanghai 200438 China
| | - Hans Ågren
- Department of Physics and Astronomy, Uppsala University Box 516 SE-751 20 Uppsala Sweden
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University Shanghai 200438 China
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3
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Ono Y, Hirao T, Haino T. Solvent-directed formation of helically twisted stacking constructs via self-assembly of tris(phenylisoxazolyl)benzene dimers. Org Biomol Chem 2021; 19:7165-7171. [PMID: 34369543 DOI: 10.1039/d1ob01277k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Ureido-pyrimidinone (UPy)-appended tris(phenylisoxazolyl)benzenes were synthesized. The UPy moieties of the tris(phenylisoxazolyl)benzenes stably formed self-complementary dimers in solution. The dimers self-assembled to form helically twisted stacking constructs in a process driven by π-π stacking interactions of UPy dimer moieties and dipole-dipole interactions of isoxazole units. Strong association affinity was seen within the stacking constructs compared with the previously reported isoxazole derivatives owing to the auxiliary π-π stacking interaction. Notably, tris(phenylisoxazolyl)benzenes showed an environmentally responsive nature. The absorption bands, emission intensities, and sizes of ensembles depended significantly on the mixing ratio of CHCl3 and methylcyclohexane (MCH). Additionally, sharp on-off switching phenomena were seen in their circular dichroism (CD) and circularly polarized luminescence (CPL) spectra in response to the mixing ratio of CHCl3 and MCH. CD and CPL were activated only at a certain mixing ratio of CHCl3/MCH, thus showing potential for the creation of molecular sensors.
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Affiliation(s)
- Yudai Ono
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1, Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
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4
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Kanakala MB, Yelamaggad CV. Exceptional dual fluorescent, excited-state intramolecular proton-transfer (ESIPT) columnar liquid crystals characterized by J-stacking and large Stokes shifts. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115879] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Riebe S, Saccone M, Stelzer J, Sowa A, Wölper C, Soloviova K, Strassert CA, Giese M, Voskuhl J. Alkylated Aromatic Thioethers with Aggregation‐Induced Emission Properties—Assembly and Photophysics. Chem Asian J 2018; 14:814-820. [DOI: 10.1002/asia.201801564] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/07/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Steffen Riebe
- Institute of Organic Chemistry, University of Duisburg-Essen Universitätsstrasse 7 45117 Essen Germany
| | - Marco Saccone
- Institute of Organic Chemistry, University of Duisburg-Essen Universitätsstrasse 7 45117 Essen Germany
| | - Jacqueline Stelzer
- Institute of Organic Chemistry, University of Duisburg-Essen Universitätsstrasse 7 45117 Essen Germany
| | - Andrea Sowa
- Institute of Organic Chemistry, University of Duisburg-Essen Universitätsstrasse 7 45117 Essen Germany
| | - Christoph Wölper
- Faculty of Chemistry and Center for NanoIntegration (CENIDE)University of Duisburg-Essen Universitätsstrasse 5–7 45117 Essen Germany
| | - Kateryna Soloviova
- Institut für Anorganische und Analytische Chemie and CeNTechWestfälische Wilhelms-Universität Münster Heisenbergstrasse 11 48149 Münster Germany
| | - Cristian A. Strassert
- Institut für Anorganische und Analytische Chemie and CeNTechWestfälische Wilhelms-Universität Münster Heisenbergstrasse 11 48149 Münster Germany
| | - Michael Giese
- Institute of Organic Chemistry, University of Duisburg-Essen Universitätsstrasse 7 45117 Essen Germany
| | - Jens Voskuhl
- Institute of Organic Chemistry, University of Duisburg-Essen Universitätsstrasse 7 45117 Essen Germany
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6
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Satapathy AK, Behera SK, Kumar R, Sandhya K, Yelamaggad C, Sahoo B. Excited state intramolecular proton transfer emission in bent core liquid crystals. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.03.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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7
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Guo Y, Shi D, Luo ZW, Xu JR, Li ML, Yang LH, Yu ZQ, Chen EQ, Xie HL. High Efficiency Luminescent Liquid Crystalline Polymers Based on Aggregation-Induced Emission and “Jacketing” Effect: Design, Synthesis, Photophysical Property, and Phase Structure. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01605] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yang Guo
- Key
Laboratory of Advanced Functional Polymer Materials of Colleges and
Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
- Shenzhen
Key Laboratory of Functional Polymers, School of Chemistry and Environmental
Engineering, Shenzhen University, Shenzhen 518060, China
| | - Dong Shi
- Key
Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhi-Wang Luo
- Key
Laboratory of Advanced Functional Polymer Materials of Colleges and
Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Jia-Ru Xu
- Key
Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ming-Li Li
- Key
Laboratory of Advanced Functional Polymer Materials of Colleges and
Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Long-Hu Yang
- Key
Laboratory of Advanced Functional Polymer Materials of Colleges and
Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Zhen-Qiang Yu
- Shenzhen
Key Laboratory of Functional Polymers, School of Chemistry and Environmental
Engineering, Shenzhen University, Shenzhen 518060, China
| | - Er-Qiang Chen
- Key
Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - He-Lou Xie
- Key
Laboratory of Advanced Functional Polymer Materials of Colleges and
Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
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8
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Padalkar VS, Tsutsui Y, Sakurai T, Sakamaki D, Tohnai N, Kato K, Takata M, Akutagawa T, Sakai KI, Seki S. Optical and Structural Properties of ESIPT Inspired HBT–Fluorene Molecular Aggregates and Liquid Crystals. J Phys Chem B 2017; 121:10407-10416. [DOI: 10.1021/acs.jpcb.7b08073] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Vikas S. Padalkar
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yusuke Tsutsui
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Tsuneaki Sakurai
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Daisuke Sakamaki
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Norimitsu Tohnai
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kenichi Kato
- RIKEN SPring-8 Center, Kouto,
Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Masaki Takata
- RIKEN SPring-8 Center, Kouto,
Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tomoyuki Akutagawa
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Ken-ichi Sakai
- Department of Bio- & Material Photonics, Chitose Institute of Science and Technology, Chitose 066-8655, Japan
| | - Shu Seki
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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9
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Rahman MJ, Shimizu H, Hasegawa M, Iyoda M. Pentadecaphenylenes: synthesis, self-assembly and complexation with fullerene C60. Org Chem Front 2017. [DOI: 10.1039/c7qo00258k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Macrocyclic pentadecaphenylene incorporates fullerene C60 in its cavity to afford fibrous 2 : 1 and 1 : 1 sandwich complexes.
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Affiliation(s)
- M. Jalilur Rahman
- Department of Chemistry
- Graduate School of Science and Engineering
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hideyuki Shimizu
- Department of Chemistry
- Graduate School of Science and Engineering
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Masashi Hasegawa
- Department of Chemistry
- School of Science
- Kitasato University
- Sagamihara
- Japan
| | - Masahiko Iyoda
- Department of Chemistry
- Graduate School of Science and Engineering
- Tokyo Metropolitan University
- Hachioji
- Japan
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10
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Lin KT, Lai CK. Phase crossover in columnar tris-(1,3,4-oxadiazoles) with pendant quinoxalines. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Pathak SK, Gupta M, Pal SK, Achalkumar AS. Hexacatenars Exhibiting π-π Driven Supergelation, Aggregation Induced Blue Light Emission and Thermochromism. ChemistrySelect 2016. [DOI: 10.1002/slct.201600927] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Suraj K. Pathak
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati 781039, Assam India
| | - Monika Gupta
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, Knowledge City; Manauli 140306, Punjab India
| | - Santanu K. Pal
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, Knowledge City; Manauli 140306, Punjab India
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12
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Symmetric quinoxaline–oxadiazole conjugates: mesogenic behavior via quinoxaline–CH interactions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Padalkar VS, Seki S. Excited-state intramolecular proton-transfer (ESIPT)-inspired solid state emitters. Chem Soc Rev 2016; 45:169-202. [PMID: 26506465 DOI: 10.1039/c5cs00543d] [Citation(s) in RCA: 548] [Impact Index Per Article: 68.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Solid state emitters based on excited state intramolecular proton transfer (ESIPT) have been attracting considerable interest since the past few years in the field of optoelectronic devices because of their desirable unique photophysical properties. The photophysical properties of the solid state ESIPT fluorophores determine their possible applicability in functional materials. Less fluorescence quantum efficiencies and short fluorescence lifetime in the solid state are the shortcomings of the existing ESIPT solid state emitters. Designing of ESIPT chromophores with high fluorescence quantum efficiencies and a long fluorescence lifetime in the solid state is a challenging issue because of the unclear mechanism of the solid state emitters in the excited state. Reported design strategies, detailed photophysical properties, and their applications will help in assisting researchers to overcome existing challenges in designing novel solid state ESIPT fluorophores for promising applications. This review highlights recently developed solid state ESIPT emitters with focus on molecular design strategies and their photophysical properties, reported in the last five years.
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Affiliation(s)
- Vikas S Padalkar
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
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14
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Wöhrle T, Wurzbach I, Kirres J, Kostidou A, Kapernaum N, Litterscheidt J, Haenle JC, Staffeld P, Baro A, Giesselmann F, Laschat S. Discotic Liquid Crystals. Chem Rev 2015; 116:1139-241. [PMID: 26483267 DOI: 10.1021/acs.chemrev.5b00190] [Citation(s) in RCA: 418] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tobias Wöhrle
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Iris Wurzbach
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Jochen Kirres
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Antonia Kostidou
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Nadia Kapernaum
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Juri Litterscheidt
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Johannes Christian Haenle
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Peter Staffeld
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Angelika Baro
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Frank Giesselmann
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Sabine Laschat
- Institut für Organische Chemie, and ‡Institut für Physikalische Chemie, Universität Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
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15
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Han K, Cho BK. Monoclinic to two-dimensional hexagonal transformation in hexacatenar molecules with a 1,2,3-triazole-based conjugated rod: morphology-dependent thermochromic behavior. SOFT MATTER 2014; 10:7588-7594. [PMID: 25207835 DOI: 10.1039/c4sm01051e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel hexacatenar molecules based on a 1,2,3-triazole-extended aromatic rod self-assemble into crystalline monoclinic and liquid crystalline hexagonal columnar structures depending on temperature. The phase transition may involve a conformational change from an anisotropic transoid to a half-disk cisoid conformer upon melting. In a hexacatenar molecule with sixfold octyl chains, the crystal-to-LC transition accompanies a photoluminescence color change from sky blue to dark blue, which is attributed to the formation of higher-order aggregates in the crystalline state.
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Affiliation(s)
- Kyuwon Han
- Department of Chemistry and Institute of Nanosensor and Biotechnology, Dankook University, Gyeonggi-Do, 448-701, Korea.
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16
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Sasi R, Rao TP, Devaki SJ. Bio-based ionic liquid crystalline quaternary ammonium salts: properties and applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:4126-4133. [PMID: 24571658 DOI: 10.1021/am4057453] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present work, we describe the preparation, properties, and applications of novel ionic liquid crystalline quaternary ammonium salts (QSs) of 3-pentadecylphenol, a bio-based low-cost material derived from cashew nut shell liquid. Amphotropic liquid crystalline phase formation in QSs was characterized using a combination of techniques, such as DSC, PLM, XRD, SEM, and rheology, which revealed the formation of one, two, and three dimensionally ordered mesophases in different length scales. On the basis of these results, a plausible mechanism for the formation of specific modes of packing in various mesophases was proposed. Observation of anisotropic ionic conductivity and electrochemical stability suggests their application as a solid electrolyte.
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Affiliation(s)
- Renjith Sasi
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) , Thiruvananthapuram, 695019, India
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17
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Godbert N, Crispini A, Ghedini M, Carini M, Chiaravalloti F, Ferrise A. LCDiXRay: a user-friendly program for powder diffraction indexing of columnar liquid crystals. J Appl Crystallogr 2014. [DOI: 10.1107/s1600576714003240] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
The formulation of a standard computerized procedure for the indexing of powder X-ray diffraction (PXRD) patterns of columnar liquid crystals, with the determination of all structural information extracted from a properly indexed PXRD spectrum and the attribution of the columnar mesophase symmetry, is presented. In particular, the proposed program notably accelerates the identification of columnar mesophases together with thein situdetermination of their structural parameters such as mesophase type, space group, cell parameters, cross-section area, intermolecular stacking distance between consecutive discoids and, in the case of ordered mesophases, the estimation of the number of molecules constituting each discoid.
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18
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Ahipa TN, Kumar V, Shankar Rao DS, Prasad SK, Adhikari AV. New 4-(2-(4-alkoxyphenyl)-6-methoxypyridin-4-yl)benzonitriles: synthesis, liquid crystalline behavior and photo physical properties. CrystEngComm 2014. [DOI: 10.1039/c4ce00128a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of luminescent 4-(2-(4-alkoxyphenyl)-6-methoxypyridin-4-yl)benzonitriles containing three ring systems, with bent-core structures was synthesized as potential mesogens and characterized by spectral techniques.
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Affiliation(s)
- T. N. Ahipa
- Department of Chemistry
- National Institute of Technology Karnataka
- Mangalore - 575025, India
| | - Vijith Kumar
- Solid State Structural Chemistry Unit
- Indian Institute of Science
- Bangalore - 560 012, India
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19
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Hu R, Leung NLC, Tang BZ. AIE macromolecules: syntheses, structures and functionalities. Chem Soc Rev 2014; 43:4494-562. [DOI: 10.1039/c4cs00044g] [Citation(s) in RCA: 1080] [Impact Index Per Article: 108.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A comprehensive review of macromolecules with aggregation-induced emission attributes is presented, covering the frontiers of syntheses, structures, functionalities and applications.
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Affiliation(s)
- Rongrong Hu
- HKUST-Shenzhen Research Institute
- Shenzhen 518057, China
- Department of Chemistry
- Institute for Advanced Study
- Institute of Molecular Functional Materials
| | - Nelson L. C. Leung
- Department of Chemistry
- Institute for Advanced Study
- Institute of Molecular Functional Materials
- Division of Biomedical Engineering
- Division of Life Science and State Key Laboratory of Molecular Neuroscience
| | - Ben Zhong Tang
- HKUST-Shenzhen Research Institute
- Shenzhen 518057, China
- Department of Chemistry
- Institute for Advanced Study
- Institute of Molecular Functional Materials
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20
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Roy B, De N, Majumdar KC. Advances in Metal-Free Heterocycle-Based Columnar Liquid Crystals. Chemistry 2012; 18:14560-88. [DOI: 10.1002/chem.201200483] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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21
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Yuan WZ, Yu ZQ, Lu P, Deng C, Lam JWY, Wang Z, Chen EQ, Ma Y, Tang BZ. High efficiency luminescent liquid crystal: aggregation-induced emission strategy and biaxially oriented mesomorphic structure. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15712h] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Tang J, Huang R, Gao H, Cheng X, Prehm M, Tschierske C. Columnar mesophases of luminescent polycatenar liquid crystals incorporating a 1,3-substituted benzene ring interconnecting two 1,3,4-oxadiazoles. RSC Adv 2012. [DOI: 10.1039/c2ra01362b] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Park S, Kwon JE, Park SY. Strategic emission color tuning of highly fluorescent imidazole-based excited-state intramolecular proton transfer molecules. Phys Chem Chem Phys 2012; 14:8878-84. [DOI: 10.1039/c2cp23894b] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Sun X, Zhang X, Li X, Liu S, Zhang G. A mechanistic investigation of mechanochromic luminescent organoboron materials. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32809g] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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25
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Yuan WZ, Yu ZQ, Tang Y, Lam JWY, Xie N, Lu P, Chen EQ, Tang BZ. High Solid-State Efficiency Fluorescent Main Chain Liquid Crystalline Polytriazoles with Aggregation-Induced Emission Characteristics. Macromolecules 2011. [DOI: 10.1021/ma2021979] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wang Zhang Yuan
- Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
- School of Chemistry and Chemical engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhen-Qiang Yu
- School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Youhong Tang
- Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W. Y. Lam
- Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Ni Xie
- Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Ping Lu
- Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Er-Qiang Chen
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ben Zhong Tang
- Department of Chemistry, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
- State Key Laboratory of Molecular Neuroscience, HKUST, Clear Water Bay, Kowloon, Hong Kong, China
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Kwon JE, Park SY. Advanced organic optoelectronic materials: harnessing excited-state intramolecular proton transfer (ESIPT) process. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:3615-42. [PMID: 21780312 DOI: 10.1002/adma.201102046] [Citation(s) in RCA: 729] [Impact Index Per Article: 56.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Indexed: 05/04/2023]
Abstract
Recently, organic fluorescent molecules harnessing the excited-state intramolecular proton transfer (ESIPT) process are drawing great attention due to their unique photophysical properties which facilitate novel optoelectronic applications. After a brief introduction to the ESIPT process and related photo-physical properties, molecular design strategies towards tailored emission are discussed in relation to their theoretical aspects. Subsequently, recent studies on advanced ESIPT molecules and their optoelectronic applications are surveyed, particularly focusing on chemical sensors, fluorescence imaging, proton transfer lasers, and organic light-emitting diodes (OLEDs).
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Affiliation(s)
- Ji Eon Kwon
- Creative Research Initiative Center for Supramolecular Optoelectronic, Materials and WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Gwanak-gu, Korea
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Hanai Y, Rahman MJ, Yamakawa J, Takase M, Nishinaga T, Hasegawa M, Kamada K, Iyoda M. Synthesis and Nanostructures of Cyclic Triphenylene Trimers Having Long Alkyl and Alkoxy Side-Chains. Chem Asian J 2011; 6:2940-5. [DOI: 10.1002/asia.201100336] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Indexed: 12/24/2022]
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28
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Choi JW, Han JH, Ryu MH, Cho BK. Oblique Columnar Assemblies of Polycatenar Molecules via Click Chemistry. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.3.781] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Dai Q, Liu W, Zeng L, Lee CS, Wu J, Wang P. Aggregation-induced emission enhancement materials with large red shifts and their self-assembled crystal microstructures. CrystEngComm 2011. [DOI: 10.1039/c1ce05035d] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Gihm SH, Kim BG, Kim S, Seo J, Park SY, Park CR. Characterization of self-assembled structure of discotic liquid crystal molecules using small-angle X-ray scattering and computer simulation methods based on intermolecular interactions. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.10.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Chung MW, Lin TY, Hsieh CC, Tang KC, Fu H, Chou PT, Yang SH, Chi Y. Excited-State Intramolecular Proton Transfer (ESIPT) Fine Tuned by Quinoline−Pyrazole Isomerism: π-Conjugation Effect on ESIPT. J Phys Chem A 2010; 114:7886-91. [DOI: 10.1021/jp1036102] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Min-Wen Chung
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Tsung-Yi Lin
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Cheng-Chih Hsieh
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Kuo-Chun Tang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Hungshin Fu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Shen-Han Yang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Yun Chi
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
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Nayak M, Kim BH, Kwon J, Park S, Seo J, Chung J, Park S. Gelation-Induced Enhanced Fluorescence Emission from Organogels of Salicylanilide-Containing Compounds Exhibiting Excited-State Intramolecular Proton Transfer: Synthesis and Self-Assembly. Chemistry 2010; 16:7437-47. [DOI: 10.1002/chem.200902615] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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33
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van Houtem M, Martín-Rapún R, Vekemans J, Meijer E. Desymmetrization of 3,3′-Bis(acylamino)-2,2′-bipyridine-Based Discotics: The High Fidelity of Their Self-Assembly Behavior in the Liquid-Crystalline State and in Solution. Chemistry 2010; 16:2258-71. [DOI: 10.1002/chem.200902416] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Kimura M, Hatano T, Yasuda T, Morita J, Akama Y, Minoura K, Shimomura T, Kato T. Photoluminescent Liquid Crystals Based on Trithienylphosphine Oxides. CHEM LETT 2009. [DOI: 10.1246/cl.2009.800] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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35
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Yin S, Sun H, Yan Y, Li W, Wu L. Hydrogen-bonding-induced supramolecular liquid crystals and luminescent properties of europium-substituted polyoxometalate hybrids. J Phys Chem B 2009; 113:2355-64. [PMID: 19193055 DOI: 10.1021/jp810262c] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Eu-containing polyoxometalates, Na9EuW10O36, K11Eu(PW11O39)2, and K13Eu(SiW11O39)2, were electrostatically canned by a cationic surfactant, N-[12-(4-carboxylphenoxy)dodecyl]-N-dodecyl-N,N-dimethylammonium bromide, through the replacement of counterions, and the resulting surfactant-encapsulated polyoxometalate complexes were characterized in detail by elemental analysis as well as IR and NMR spectra. The carboxyls bearing in the complexes were confirmed existing in the dimer state through intermolecular hydrogen bonding, which leads to stable and reversible thermotropic liquid crystal properties of these complexes. The results of differential scanning calorimetry, polarized optical microscopy, and X-ray diffraction revealed that these complexes underwent smectic mesophases during the heating and cooling cycles. These complexes displayed intrinsic luminescence both in the amorphous powder states and in their mesophases. The photophysical properties showed the dependence on the existing states of samples, and the quantum yields of the complexes in the liquid crystalline structures are higher than the corresponding amorphous powders. The present investigation provides an example for developing hydrogen-bonding-induced polyoxometalate-containing hybrid liquid crystal materials with intrinsic luminescence.
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Affiliation(s)
- Shengyan Yin
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
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36
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Antharjanam PS, Jaseer M, Ragi K, Prasad E. Intrinsic luminescence properties of ionic liquid crystals based on PAMAM and PPI dendrimers. J Photochem Photobiol A Chem 2009. [DOI: 10.1016/j.jphotochem.2008.12.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Qu S, Zhao L, Yu Z, Xiu Z, Zhao C, Zhang P, Long B, Li M. Nanoparticles, helical fibers, and nanoribbons of an achiral twin-tapered bi-1,3,4-oxadiazole derivative with strong fluorescence. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:1713-1717. [PMID: 19170648 DOI: 10.1021/la802995b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A twin-tapered bi-1,3,4-oxadiazole derivative (BOXD-T8) showed a monomeric feature and intramolecular charge transition at concentrations lower than 10(-5) mol/L. BOXD-T8 molecules self-assembled to nanoparticles and further to helical nanofibers with blue fluorescence emission in DMSO, while nanoribbons resulted in an emission-enhanced gel in ethanol. The strong fluorescent emissions of BOXD-T8 in an isolated state in apolar solvents were attributed to the coplanar conformation of the rigid backbone and the strong fluorescent emissions of BOXD-T8 in the aggregation states were attributed to the coplanar conformation of the rigid backbone and J aggregation.
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Affiliation(s)
- Songnan Qu
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, Institute of Materials Science and Engineering, Jilin University, Changchun 130012, People's Republic of China
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Li AF, He H, Ruan YB, Wen ZC, Zhao JS, Jiang QJ, Jiang YB. Oxidative cyclization of N-acylhydrazones. Development of highly selective turn-on fluorescent chemodosimeters for Cu2+. Org Biomol Chem 2009; 7:193-200. [DOI: 10.1039/b811612a] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Burns CT, Lee S, Seifert S, Firestone MA. Thiophene-based ionic liquids: synthesis, physical properties, self-assembly, and oxidative polymerization. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1200] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Lavigueur C, Foster EJ, Williams VE. Self-assembly of discotic mesogens in solution and in liquid crystalline phases: effects of substituent position and hydrogen bonding. J Am Chem Soc 2008; 130:11791-800. [PMID: 18693724 DOI: 10.1021/ja803406k] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effects of functional group position on the phase behavior of discotic mesogens was examined for a series of dibenzophenazine derivatives bearing a carboxylic acid, methyl carboxylate, or nitro group. In all cases, changing the position of the group from the "top" to the "side" of the aromatic core led to dramatic differences in the phase behavior, both in terms of the stability of the liquid crystalline phases as well as the types of mesophases formed. For the non-hydrogen bonding ester and nitro derivatives, moving the substituent to the side of the core led to a lowering of the clearing temperatures or loss of liquid crystallinity. Carboxylic acid derivatives exhibit broad mesophases irrespective of the position of the acid group, but mesogens bearing this group on the side of the core exclusively form Col(h) phases, whereas those with an acid group on the top of the core exhibit more varied mesomorphism, with the formation of Col(h), Col(r), and nematic phases. Contrary to expectations, the presence of a carboxylic acid group on the side of the core does not appear to lead to the formation of dimeric structures in the liquid crystalline phase, although the columnar structures appear to be stabilized by intermolecular hydrogen bonding along the columns. These derivatives also form pi-stacked dimers in solution; the structure of these dimers are consistent with the proposed structure of the columnar phases.
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Affiliation(s)
- Christine Lavigueur
- 4D LABS and Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6
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41
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Park S, Kim S, Seo J, Park SY. Application of excited-state intramolecular proton transfer (ESIPT) principle to functional polymeric materials. Macromol Res 2008. [DOI: 10.1007/bf03218534] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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