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New furan fused 1,10-phenanthroline pentacyclic derivatives: synthesis and photophysical properties
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SYSNO ASEP 0492618 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title New furan fused 1,10-phenanthroline pentacyclic derivatives: synthesis and photophysical properties Author(s) Liu, Y. (CN)
Gong, Z. (CN)
Cimrová, Věra (UMCH-V) RID, ORCID
Výprachtický, Drahomír (UMCH-V) RID, ORCID
Liu, J. (CN)
Luo, S. (CN)
Yuan, J. (CN)
Hu, Y. (CN)
Su, S.-J. (CN)
Zou, Y. (CN)Source Title Dyes and Pigments. - : Elsevier - ISSN 0143-7208
Roč. 160, January (2019), s. 353-360Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords furan-fused 1,10-phenanthroline ; D-A-D molecules ; high photoluminescence quantum yield Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GC18-14683J GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000447816700042 EID SCOPUS 85052068833 DOI 10.1016/j.dyepig.2018.07.056 Annotation Two new donor-acceptor-donor (D-A-D) small molecules, named L1 and L2, based on furan-fused and fluorinated furan-fused 1,10-phenanthroline as electron-acceptor units and 4-(bis(4-methoxyphenyl)amino)phenyl as electron-donor units, were designed and synthesized. The photophysical and electrochemical properties were studied. The results are compared and discussed with respect to the influence of attached fluorine and solvent polarity. L1 and L2 emit intense blue light in non-polar solvent with high photoluminescence (PL) quantum yield (ηPL) of 1 for L2. The absorption and PL spectra of L2 with attached fluorine atoms are red-shifted compared with those of L1. Red shifts of PL maxima are observed with the increasing solvent polarity in solution spectra for both L1 and L2. ηPL values in solutions decrease as solvent polarity increases and the ηPL difference for L1 and L2 in solution is not so pronounced as for L1 and L2 thin films. In addition, the effect of protonation on the nitrogen atoms of phenanthroline in thin films is shown. L1 and L2 were tested in the light-emitting devices and their electroluminescent properties are also reported. The preliminary results show L1 and L2 are almost pure white emitter and greenish blue emitter, respectively. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/pii/S0143720818312671?via%3Dihub
Number of the records: 1