liu.seSearch for publications in DiVA
Change search
Refine search result
1 - 5 of 5
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Gao, Lei
    et al.
    Donghua Univ, Peoples R China; Wuzhou Univ, Peoples R China.
    Baryshnikov, Glib
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering. Bohdan Khmelnytsky Natl Univ, Ukraine.
    Ali, Amjad
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
    Kuklin, Artem
    Uppsala Univ, Sweden.
    Qian, Cheng
    Donghua Univ, Peoples R China.
    Zhang, Xianrui
    Wuzhou Univ, Peoples R China.
    Chen, Fengkun
    Donghua Univ, Peoples R China.
    Yi, Tao
    Donghua Univ, Peoples R China.
    Wu, Hongwei
    Donghua Univ, Peoples R China.
    Hydrophilic Cocrystals with Water Switched Luminescence2024In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773Article in journal (Refereed)
    Abstract [en]

    Utilizing water molecules to regulate the luminescence properties of solid materials is highly challenging. Herein, we develop a strategy to produce water-triggered luminescence-switching cocrystals by coassembling hydrophilic donors with electron-deficient acceptors, where 1,2,4,5-Tetracyanobenzene (TCNB) was used as the electron acceptor and pyridyl benzimidazole derivatives were used as the electron donors enabling multiple hydrogen-bonds. Two cocrystals, namely 2PYTC and 4PYTC were obtained and showed heat-activated emission, and such emission could be quenched or weakened by adding water molecules. The cocrystal structure exhibited the donor molecule that can form multiple hydro bonds with water and acceptor molecules due to the many nitrogen atoms of them. The analyses of the photophysical data, powder X-ray diffraction, and other data confirmed the reversible fluorescence "on-off" effects were caused by eliminating and adding water molecules in the crystal lattice. The density functional theory calculations indicate that the vibration of the O-H bond of water molecules in the cocrystal can absorb the excitation energy and suppress fluorescence. Furthermore, the obtained cocrystals also showed temperature, humidity, and H+/NH4+ responsive emission behavior, which allows their applications as thermal and humidity sensors, and multiple information encryptions. This research paves the way for preparing intelligent hydrophilic organic cocrystal luminescent materials. Hydrophilic donors with electron-deficient acceptors were coassembled to achieve luminescence-switching cocrystals triggered by water molecules. The obtained cocrystals show a strong water absorption ability and excellent fluorescence properties. The emission of cocrystals can be reversibly switched by heating and water. Finally, the obtained cocrystals show potential applications in temperature-humidity and acid-base responses.+image

  • 2.
    Danyliv, Yan
    et al.
    Lviv Polytech Natl Univ, Ukraine.
    Ivaniuk, Khrystyna
    Lviv Polytech Natl Univ, Ukraine.
    Danyliv, Iryna
    Lviv Polytech Natl Univ, Ukraine.
    Bezvikonnyi, Oleksandr
    Kaunas Univ Technol, Lithuania.
    Volyniuk, Dmytro
    Kaunas Univ Technol, Lithuania.
    Galyna, Sych
    Univ Savoie Mont Blanc, France.
    Lazauskas, Algirdas
    Kaunas Univ Technol, Lithuania.
    Skhirtladze, Levani
    Kaunas Univ Technol, Lithuania.
    Agren, Hans
    Uppsala Univ, Sweden.
    Stakhira, Pavlo
    Lviv Polytech Natl Univ, Ukraine.
    Karaush-Karmazin, Nataliya
    Bohdan Khmelnytsky Natl Univ, Ukraine.
    Ali, Amjad
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
    Baryshnikov, Glib
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering. Bohdan Khmelnytsky Natl Univ, Ukraine.
    Grazulevicius, Juozas V.
    Kaunas Univ Technol, Lithuania.
    Carbazole-σ-sulfobenzimide derivative exhibiting mechanochromic thermally activated delayed fluorescence as emitter for flexible OLEDs: Theoretical and experimental insights2023In: Dyes and pigments, ISSN 0143-7208, E-ISSN 1873-3743, Vol. 208, article id 110841Article in journal (Refereed)
    Abstract [en]

    For the first time exploiting sulfobenzimide moiety as an acceptor unit, the new type of donor-sigma-acceptor emitter exhibiting thermally activated delayed fluorescence (TADF) is demonstrated. In different solutions, the synthesized compound emits light resulting from either locally excited carbazole moiety or trough-space charge transfer (exciplex-like) between carbazole and sulfobenzimide units. In the solid state, this emitter demonstrates aggregation-induced emission enhancement and different emission colours due to its different conformations. The mechanoluminescence of the donor-sigma-acceptor compound was observed and studied in detail by experimental and theoretical approaches including single-crystal and powder X-ray analyses. Electroluminescence of the different colours was observed when the compound was utilized as non-doped TADF emitter in rigid and flexible organic light-emitting diodes fabricated on glass or poly(ethylene terephthalate) substrates. The device fabricated on the rigid substrate exhibited the best performance with maximum current efficiency, power efficiency, and external quantum efficiency of 11.0 cd A(-1), 3.0 lm W-1, and 4.3%, respectively.

  • 3.
    Gusev, Alexey
    et al.
    Crimean Fed Univ, Russia.
    Braga, Elena
    Crimean Fed Univ, Russia.
    Zamnius, Ekaterina
    Crimean Fed Univ, Russia.
    Kiskin, Mikhail
    Russian Acad Sci, Russia.
    Ali, Amjad
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
    Baryshnikov, Glib
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
    Linert, Wolfgang
    Vienna Univ Technol, Austria.
    Mononuclear copper(i) complexes bearing a 3-phenyl-5-(pyridin-4-yl)-1,2,4-triazole ligand: synthesis, crystal structure, TADF-luminescence, and mechanochromic effects2023In: Dalton Transactions, ISSN 1477-9226, E-ISSN 1477-9234, Vol. 52, no 41, p. 14995-15008Article in journal (Refereed)
    Abstract [en]

    Three new mononuclear heteroleptic copper(i) halide complexes, [CuL(PPh3)(2)X] (X = Cl, Br, I), based on 3-phenyl-5-(pyridin-4-yl)-1,2,4-triazole (L) and triphenylphosphine (PPh3) ligands, have been prepared by reaction of CuX (X = Cl, Br, I), L and PPh3 in a molar ratio of 1 : 1 : 2 in MeCN solutions. The synthesized complexes exhibit blue light emission in solutions and bright green emission in the crystal state with quantum yields of up to 100%. The luminescence decay analysis and density functional theory calculations revealed that the emission of solid samples at room temperature corresponds to the thermally activated delayed fluorescence, while that at 77 K is assigned to phosphorescence. Utilizing the studied complexes in OLED heterostructures resulted in high-performing green-emitting devices with an external quantum efficiency of up to 13.4%.

  • 4.
    Ivaniuk, Khrystyna
    et al.
    Lviv Polytech Natl Univ, Ukraine.
    Stakhira, Pavlo
    Lviv Polytech Natl Univ, Ukraine.
    Yaremchuk, Iryna
    Lviv Polytech Natl Univ, Ukraine.
    Kutsiy, Stepan
    Lviv Polytech Natl Univ, Ukraine.
    Bulavinets, Tetiana
    Lviv Polytech Natl Univ, Ukraine.
    Volyniuk, Dmytro
    Kaunas Univ Technol, Lithuania.
    Klymenko, Ivan
    Kaunas Univ Technol, Lithuania.
    Sych, Galyna
    Univ Savoie Mont Blanc, France.
    Karaush-Karmazin, Nataliya
    Bohdan Khmelnytsky Natl Univ, Ukraine.
    Ali, Amjad
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
    Vaitusionak, Aliaksei
    Belarusian State Univ, BELARUS.
    Kostjuk, Sergei V
    Belarusian State Univ, BELARUS.
    Grazulevicius, Juozas Vidas
    Kaunas Univ Technol, Lithuania.
    Baryshnikov, Glib
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering. Bohdan Khmelnytsky Natl Univ, Ukraine.
    (Tetrafluorovinylphenyl)carbazole as a Multifunctional Material for OLED Applications2023In: ACS APPLIED ELECTRONIC MATERIALS, ISSN 2637-6113, Vol. 5, no 4, p. 2156-2168Article in journal (Refereed)
    Abstract [en]

    The multifunctional materials for application in organic light-emitting devices (OLEDs) based on a single structural motif are very desired but quite rare species. Such structures allow simplifying the chemical variety within OLED heterostructures and thus reducing their cost, manufacturing time, and logistic efforts. In this paper, we report the 9-(2,3,5,6-tetrafluoro-4-vinylphenyl)carbazole molecule (Cz4FS) utilized as a fluorescent emitter, host material for quantum dot based OLEDs (QLEDs), acceptor part of the exciplex active layer, and monomer that can be used for the preparation of emissive polymers and copolymers. The external quantum efficiency (EQE) of the corresponding fluorescent OLED based on a Cz4FS single emitter doped into a 1,3-bis(carbazol-9-yl)benzene matrix is 4.2%, which is close to the theoretical limit and maximum brightness at the level of 3600 cd/m2. An OLED based on exciplex emission obtained utilizing Cz4FS as an acceptor demonstrates higher efficiency (5.3%) and much higher brightness near 25 000 cd/m2. A QLED based on Cz4FS as a host for CdSeS/ZnS core-shell quantum dots demonstrates excellent energy transfer from the Cz4FS matrix that results in a clear spectrum of quantum dots with an EQE of 2.3%, maximum of 19 000 cd/m2, and narrow spectral distribution. An OLED based on a Cz4FS-based polymer and copolymer demonstrates not extraordinary efficiency but low-efficiency roll-off in a wide range of current densities.

    Download full text (pdf)
    fulltext
  • 5.
    Arif, Muhammad
    et al.
    Changzhou Univ, Peoples R China.
    Mahsud, Ayaz
    Henan Normal Univ, Peoples R China.
    Ali, Amjad
    Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
    Liao, Shipeng
    Changzhou Univ, Peoples R China.
    Xia, Jiawei
    Changzhou Univ, Peoples R China.
    Xiao, Hai
    Tsinghua Univ, Peoples R China.
    Azam, Mohammad
    King Saud Univ, Saudi Arabia.
    Muhmood, Tahir
    Nanjing Forestry Univ, Peoples R China.
    Lu, Zhansheng
    Henan Normal Univ, Peoples R China.
    Chen, Yinjuan
    Changzhou Univ, Peoples R China.
    Unraveling the synergy of interface engineering α-MnO2/Bi2WO6 heterostructures and defective active sites for superdurable photocatalysis: Mechanistic insights into charge separation/transfer2023In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 475, article id 146458Article in journal (Refereed)
    Abstract [en]

    The construction of visible-light-driven hybrid heterostructure photocatalysts is of great significance for environmental remediation, although the utilization of strong visible-light response photocatalysts with high efficiency and stability remains a major challenge. Defect engineering is an excellent way to introduce metal cation vacancies in materials, thereby ensuing in highly enhanced catalytic performance. Inspired by this, we effectively constructed a built-in interface alpha-MnO2/Bi2WO6 heterostructure with abundant intimate interfaces and defective Mn3+/Mn4+ active sites for photocatalytic tetracycline hydrochloride (TC-HCl), hexavalent chromium Cr6+ reduction, and Escherichia coli (E. coli) inactivation. The experimental results, such as the active species test and X-ray photoelectron spectroscopy, indicated that the defective sites Mn3+/Mn4+, surface oxygen vacancies, and Bi(3+x)+ boosted the visible light absorption, and highly enhanced the photoinduced charge separation/transfer. Furthermore, experimental and DFT calculations reveal the high charge density at the built-in interface heterostructure and the Z-scheme charge transfer mechanism during the photocatalytic process. The results further reveal that O-2(-) and O-1(2) are the main reactive active species contributing to the photocatalytic reaction. The exceptional TC-HCl decomposition activity of the alpha-MnO2/Bi2WO6 heterostructure (97.56%, 2.31, and 2.04 times higher than bulk), enhanced reaction kinetics (K-app = 0.041 min(-1), 6.4, and 5.2 times higher than bulk), removal rate of 80.3%, Cr6+ reduction to Cr3+ (98.56%, K-app = 0.0599 min(-1)), and almost 100% bacterial inactivation compared to bulk alpha-MnO2 (42.22%) and Bi2WO6 (47.76%), were mainly due to the enhanced charge separation/transfer at the built-in interface and high charge density. This study opens new horizons for constructing Z-scheme MnO-based interface heterostructures with abundant defect sites for exceptional photocatalytic applications.

1 - 5 of 5
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf