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Carbazole-fluorene copolymers with various substituents at the carbazole nitrogen: structure-properties relationship

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F23%3A00573524" target="_blank" >RIV/61389013:_____/23:00573524 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.mdpi.com/2073-4360/15/13/2932" target="_blank" >https://www.mdpi.com/2073-4360/15/13/2932</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/polym15132932" target="_blank" >10.3390/polym15132932</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Carbazole-fluorene copolymers with various substituents at the carbazole nitrogen: structure-properties relationship

  • Original language description

    Carbazole derivatives, carbazole-containing polymers and iridium complexes are of interest due to many possible applications in photonics, electronics and biology, particularly as active or hole-transporting layers in organic as well as perovskite devices due to their interesting properties. Here, a series of carbazole-fluorene conjugated copolymers with various substituents at the N-carbazole position (2-methoxycarbonylethyl, 2-carboxyethyl, 2-ethylhexyl, and nonan-2,4-dionatoiridium(III)bis(2-phenylpyridine-N,C2′)-9-yl) was prepared by Suzuki coupling. Their photophysical, electrochemical and electroluminescence (EL) properties were studied. Effects of molecular weight and substituents attached to carbazole unit on their properties are reported. The carbazole-fluorene copolymers in dilute solutions exhibited intense photoluminescence (PL) emission in the blue spectral region with high PL quantum yields (78–87%) except for the copolymer with the iridium complex (23%). Similar PL spectra were observed in dilute solutions. More pronounced differences were found in thin film PL and EL properties due to excimer/aggregate formation. Light-emitting devices (LEDs) made of copolymers with 2-ethylhexyl as N-carbazole substituent exhibited efficient EL emission with the best performance and the lowest EL onset voltages (3–4 V), while the LEDs made of copolymers with other substituents were not as efficient, but showed anomalous behavior and memory effects in current-voltage characteristics promising also for bio-inspired electronics.n

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10404 - Polymer science

Result continuities

  • Project

    <a href="/en/project/GC20-15498J" target="_blank" >GC20-15498J: Polymer - perovskite hybrid materials for photonics</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Polymers

  • ISSN

    2073-4360

  • e-ISSN

    2073-4360

  • Volume of the periodical

    15

  • Issue of the periodical within the volume

    13

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    21

  • Pages from-to

    2932

  • UT code for WoS article

    001028291600001

  • EID of the result in the Scopus database

    2-s2.0-85164735888