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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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