TY - JOUR
T1 - A fluorene-based material containing triple azacrown ether groups
T2 - Synthesis, characterization and application in chemosensors and electroluminescent devices
AU - Wu, Chia Shing
AU - Lin, Ying Ju
AU - Chen, Yun
PY - 2014/3/7
Y1 - 2014/3/7
N2 - We design a novel multifunctional fluorene-based material containing triple azacrown ether (FTC) not only for application in aqueous solution as a chemosensor towards Fe3+ but also to enhance the electroluminescence of PLEDs using an environmentally stable aluminum cathode. The photo-physical and sensing properties were investigated by absorption and photoluminescence (PL) spectroscopy. The FTC exhibited specific selectivity and high sensitivity toward Fe3+, with the Stern-Volmer coefficients (Ksv) being 1.59 × 105 M-1 in a solvent mixture of tetrahydrofuran and water (THF-H2O = 9/1, v/v). The FTC maintained high selectivity toward Fe3+ in the presence of ten interfering metal cations. The HOMO and LUMO levels were estimated to be -5.88 eV and -2.88 eV, respectively. The FTC significantly enhances the emission performance of PLEDs [ITO/PEDOT:PSS/MEH-PPV/EIL/Al] when used as an electron injection layer (EIL), especially in the presence of metal carbonates. Particularly, the device using K2CO3 doped FTC as the electron-injection layer (EIL) exhibited significantly enhanced performance compared to the one without EIL. The performance was significantly enhanced to 11630 cd m-2 and 1.47 cd A-1, respectively, from 230 cd m-2 and 0.03 cd A -1 of the non-FTC device. Current results indicate that multifunctional fluorene-based material FTC is a potential candidate for selective detection of Fe3+ and as an effective electron injection layer to enhance the performance of MEH-PPV.
AB - We design a novel multifunctional fluorene-based material containing triple azacrown ether (FTC) not only for application in aqueous solution as a chemosensor towards Fe3+ but also to enhance the electroluminescence of PLEDs using an environmentally stable aluminum cathode. The photo-physical and sensing properties were investigated by absorption and photoluminescence (PL) spectroscopy. The FTC exhibited specific selectivity and high sensitivity toward Fe3+, with the Stern-Volmer coefficients (Ksv) being 1.59 × 105 M-1 in a solvent mixture of tetrahydrofuran and water (THF-H2O = 9/1, v/v). The FTC maintained high selectivity toward Fe3+ in the presence of ten interfering metal cations. The HOMO and LUMO levels were estimated to be -5.88 eV and -2.88 eV, respectively. The FTC significantly enhances the emission performance of PLEDs [ITO/PEDOT:PSS/MEH-PPV/EIL/Al] when used as an electron injection layer (EIL), especially in the presence of metal carbonates. Particularly, the device using K2CO3 doped FTC as the electron-injection layer (EIL) exhibited significantly enhanced performance compared to the one without EIL. The performance was significantly enhanced to 11630 cd m-2 and 1.47 cd A-1, respectively, from 230 cd m-2 and 0.03 cd A -1 of the non-FTC device. Current results indicate that multifunctional fluorene-based material FTC is a potential candidate for selective detection of Fe3+ and as an effective electron injection layer to enhance the performance of MEH-PPV.
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U2 - 10.1039/c3ob42054j
DO - 10.1039/c3ob42054j
M3 - Article
AN - SCOPUS:84894197123
SN - 1477-0520
VL - 12
SP - 1419
EP - 1429
JO - Organic and Biomolecular Chemistry
JF - Organic and Biomolecular Chemistry
IS - 9
ER -