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Substituent effects on the luminescence and charge transport properties of novel bis-lactam-based molecules
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Web of Science
Cited 1 time in Scopus
- Authors
- Issue Date
- 2022-08
- Publisher
- Elsevier BV
- Citation
- Dyes and Pigments, Vol.204, p. 110465
- Abstract
- A series of bis-lactam-based molecules were synthesized and applied in organic field-effect transistors (OFETs) and organic light-emitting diodes (OLEDs). Among the derivatives, 1,5-dioctyl-3,7-bis(9-phenyl-9H-carbazol-2-yl)-1,5-naphthyridine-2,6-dione (NTD-pCz) exhibited the highest maximum hole mobility of 0.11 cm(2) V-1 s(-1) , with on-off current ratios (Ion/Ioff) of > 105 in OFETs, which was attributed to NTD-pCz exhibiting the lowest reorganization energy, extended it-conjugation with a relatively small dihedral angle between the NTD core and the side group, and the strongest intermolecular interaction in the thin-film state. In addition, NTD-pCz exhibited the highest maximum external quantum efficiency of 3.56%, with a current efficiency of 9.95 cd A(-1), when incorporated into nondoped OLEDs, which is ascribed to its excellent solid-state photoluminescence quantum yield of 83%. These results reveal the potential of NTD-based molecules for use in efficient next generation multifunctional optoelectronic devices.
- ISSN
- 0143-7208
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