Details

Autor(en) / Beteiligte

• Quan, Changyun
• Nie, Han
• Hu, Rongrong
• Qin, Anjun
• Zhao, Zujin
• Tang, Ben Zhong

Titel

A Silole-Based Efficient Electroluminescent Material with Good Electron-Transporting Potential

Ist Teil von

• Chinese journal of chemistry, 2015-08, Vol.33 (8), p.842-846

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2015

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• A new silole derivative, 2,5-bis（7-（dimesitylboranyl）-9,9-dimethylfluoren-2-yl）- 1 -methyl- 1,3,4-triphenylsilole （（MesBF）2MTPS）, is synthesized and characterized. （MesBF）2MTPS shows a good fluorescence efficiency of 15% in THF solution and a higher efficiency of 86% in solid film, presenting an aggregation-enhanced emission charac- teristic. It is thermally and morphologically stable, with high decomposition and glass-transition temperatures of 257 and 171 ℃, respectively. The LUMO energy level （-2.96 eV） of （MesBF）zMTPS is lower than that of TPBi, revealing its electron-transporting potential. Efficient organic light-emitting diodes （OLEDs） are fabricated using （MesBF）2MTPS as emitter, which radiates yellow light at 554 nm, and affords high maximum luminance, current efficiency, and external quantum efficiency of 48348 cd·m^-2, 12.3 cd·A^-1, and 4.1%, respectively.