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Ma Y, Hou Y, Zhang Y, Chang L, Li R, Niu H. Preparation and electrochromic properties of polyamides based on 3,
4‐dimethylthieno
[2,3‐b]thiophene. J Appl Polym Sci 2022. [DOI: 10.1002/app.52348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yang Ma
- Key Laboratory of Chemistry, Chemical Engineering and Materials, High‐Quality Technology Conversion, Heilongjiang Province & School of Chemistry and Chemical Engineering Heilongjiang University Harbin China
| | - Yanjun Hou
- Key Laboratory of Chemistry, Chemical Engineering and Materials, High‐Quality Technology Conversion, Heilongjiang Province & School of Chemistry and Chemical Engineering Heilongjiang University Harbin China
| | - Yuhang Zhang
- Key Laboratory of Chemistry, Chemical Engineering and Materials, High‐Quality Technology Conversion, Heilongjiang Province & School of Chemistry and Chemical Engineering Heilongjiang University Harbin China
| | - Lijing Chang
- Key Laboratory of Chemistry, Chemical Engineering and Materials, High‐Quality Technology Conversion, Heilongjiang Province & School of Chemistry and Chemical Engineering Heilongjiang University Harbin China
| | - Rui Li
- Key Laboratory of Chemistry, Chemical Engineering and Materials, High‐Quality Technology Conversion, Heilongjiang Province & School of Chemistry and Chemical Engineering Heilongjiang University Harbin China
| | - Haijun Niu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education & Department of Macromolecular Science and Engineering, School of Chemistry and Chemical Engineering Heilongjiang University Harbin China
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2
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Li R, Xu H, Zhang Y, Chang L, Ma Y, Hou Y, Miao S, Wang C. Electrochromic properties of pyrene conductive polymers modified by chemical polymerization. RSC Adv 2021; 11:39291-39305. [PMID: 35492490 PMCID: PMC9044429 DOI: 10.1039/d1ra07977h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 12/02/2021] [Indexed: 01/17/2023] Open
Abstract
Pyrene is composed of four benzene rings and has a unique planar melting ring structure. Pyrene is the smallest condensed polycyclic aromatic hydrocarbon, and its unique structural properties have been extensively studied. Pyrene has excellent properties such as thermal stability, high fluorescence quantum efficiency and high carrier mobility. This paper mainly used thiophene, EDOT and triphenylamine groups to enhance the pyrene based π-conjugated system and control the molecular accumulation of organic semiconductors, and improve their charge transport performances. Five kinds of polymer were synthesized and correspondingly characterized. The five kinds of pyrene conductive polymer had outstanding properties in terms of solubility, fluorescence intensity and thermal stability, good film-forming properties, stable electrochromic properties and high coloring efficiency. The coloration efficiency (CE) of PPYTP was as high as 277 cm2 C−1, and the switching response time was short. The coloring time of PPYEDOT was 1.3 s and the bleaching time was 3.2 s. The lower impedance will also provide the possibility of such polymers being incorporated into electrochromic devices in the future. In short, the synthesized new pyrene conductive polymers will have wide application prospects in the field of electrochromic materials. Pyrene is composed of four benzene rings and has a unique planar melting ring structure.![]()
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Affiliation(s)
- Rui Li
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion College of Heilongjiang Province & School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
| | - Haoran Xu
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion College of Heilongjiang Province & School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
| | - Yuhang Zhang
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion College of Heilongjiang Province & School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
| | - Lijing Chang
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion College of Heilongjiang Province & School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
| | - Yang Ma
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion College of Heilongjiang Province & School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
| | - Yanjun Hou
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion College of Heilongjiang Province & School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
| | - Shoulei Miao
- School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
| | - Cheng Wang
- School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou, 510641, China
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3
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Sindt AJ, DeHaven BA, McEachern DF, Dissanayake DMMM, Smith MD, Vannucci AK, Shimizu LS. UV-irradiation of self-assembled triphenylamines affords persistent and regenerable radicals. Chem Sci 2019; 10:2670-2677. [PMID: 30996983 PMCID: PMC6419929 DOI: 10.1039/c8sc04607g] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/09/2019] [Indexed: 11/21/2022] Open
Abstract
UV-irradiation of assembled urea-tethered triphenylamine dimers results in the formation of persistent radicals, whereas radicals generated in solution are reactive and quickly degrade. In the solid-state, high quantities of radicals (approximately 1 in 150 molecules) are formed with a half-life of one week with no significant change in the single crystal X-ray diffraction. Remarkably, after decay, re-irradiation of the solid sample regenerates the radicals to their original concentration. The photophysics upon radical generation are also altered. Both the absorption and emission are significantly quenched without external oxidation likely due to the delocalization of the radicals within the crystals. The factors that influence radical stability and generation are correlated to the rigid supramolecular framework formed by the urea tether of the triphenylamine dimer. Electrochemical evidence demonstrates that these compounds can be oxidized in solution at 1.0 V vs. SCE to generate radical cations, whose EPR spectra were compared with spectra of the solid-state photogenerated radicals. Additionally, these compounds display changes in emission due to solvent effects from fluorescence to phosphorescence. Understanding how solid-state assembly alters the photophysical properties of triphenylamines could lead to further applications of these compounds for magnetic and conductive materials.
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Affiliation(s)
- Ammon J Sindt
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA .
| | - Baillie A DeHaven
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA .
| | - David F McEachern
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA .
| | - D M M Mevan Dissanayake
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA .
| | - Mark D Smith
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA .
| | - Aaron K Vannucci
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA .
| | - Linda S Shimizu
- Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , USA .
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Karpiuk J, Gawryś P, Karpiuk E, Suwińska K. Electron transfer across a spiro link: extreme solvatofluorochromism of a compact spiro-bridged N, N-dimethylaniline-phthalide dyad. Chem Commun (Camb) 2019; 55:8414-8417. [DOI: 10.1039/c9cc02933h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Ultrafast intramolecular electron transfer over a spiro link leads to record-breaking solvatofluorochromism [11 600 cm−1, from 357 (hexane) to 595 nm (acetonitrile)].
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Affiliation(s)
- Jerzy Karpiuk
- Institute of Physics
- Polish Academy of Sciences
- 02-668 Warsaw
- Poland
| | - Paweł Gawryś
- Institute of Physics
- Polish Academy of Sciences
- 02-668 Warsaw
- Poland
| | - Elena Karpiuk
- Institute of Physics
- Polish Academy of Sciences
- 02-668 Warsaw
- Poland
| | - Kinga Suwińska
- Faculty of Mathematics and Natural Sciences
- Cardinal Stefan Wyszyński University in Warsaw
- 01-938 Warsaw
- Poland
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