Synthesis, Structures, and Photoinduced Electron Transfer Reaction in the 9,9‘-Spirobifluorene-Bridged Bipolar Systems
摘要:
A series of 9,9'-spirobifluorene-bridged bipolar compounds DnAm bearing various n:m ratios for triarylamine (D) versus 1,3,4-oxadiazole-conjugated oligoaryl moiety (A) have been synthesized to investigate the corresponding photoinduced electron transfer (PET) property. The excitation behaviors were probed by steady-state absorption, emission, fluorescence solvatochromism, and femtosecond fluorescence up-conversion spectroscopy. The overall reaction dynamics can be rationalized by the rate of PET, in combination with solvent relaxation dynamics. It was found that the rate of PET is dependent on the anchored D/A ratio. The rate of D1A1 and D2A1 was resolved to be similar to 2.44 x 10(12) and 2.32 x 10(12) s(-1), respectively, while it is irresolvable in D1A2 and D2A2 (> 6.6 x 1011 s-1). In another approach, based on the comprehensive X-ray data, cyclicvoltammetry, and absorption/emission spectra, the rate of photoinduced electron transfer was also qualitatively estimated. Fair comparisons were made between experimental and theoretical approaches to gain detailed insight into the PET for the titled systems.
CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
申请人:Samsung Display Co., Ltd.
公开号:US20170170401A1
公开(公告)日:2017-06-15
Provided are condensed cyclic compounds and an organic light-emitting device having the compounds which has decreased driving voltage, higher efficiency, and increased overall lifespan.
The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which comprise these compounds.
Condensed cyclic compound and organic light-emitting device including the same
申请人:Samsung Display Co., Ltd.
公开号:US10879470B2
公开(公告)日:2020-12-29
Provided are condensed cyclic compounds represented by Formula 1:
and an organic light-emitting device having the compounds which has decreased driving voltage, higher efficiency, and increased overall lifespan.
Compound for organic electric device, organic electric device using same, and electronic device comprising same
申请人:DUK SAN NEOLUX CO., LTD.
公开号:US10897013B2
公开(公告)日:2021-01-19
Provided is an organic electric element including an electron blocking layer and a hole transport layer capable of improving the luminous efficiency, stability, and lifetime of the organic electric element, and an electronic device including the same.