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Fluorine Effects in New Indenofluorenedione Derivatives for Electron Transporting Layer in OLED Devices

Fluorine Effects in New Indenofluorenedione Derivatives for Electron Transporting Layer in OLED Devices

Jaehyun Lee, Beomjin Kim, Youngil Park, Seungho Kim, Jongwook Park

J Nanosci Nanotechnol. 2014 Aug;14(8):6431-4.

PMID: 25936131

Abstract:

New three indenofluorenedione derivatives were synthesized and proposed for electron transporting layer (ETL). Three compounds are indeno[1,2-b]fluorene-6,12-dione (IF-dione), 2,8-Difluoro-indeno[1,2-b]fluorene-6,12-dione (Mono-F-lF-dione), and 1,2,3,7,8,9-Hexafluoro-indeno[1,2- b]fluorene-6,12-dione (Tri-F-IF-dione). UV-visible (UV-Vis) absorption of three compounds in THF solution state showed different absorption maximum values as follows: 292, 318 and 334 nm (IF-dione), 289, 314 and 329 nm (Mono-F-IF-dione), 285, 319 and 334 nm (Tri-F-IF-dione). Three compounds were inserted between emitting layer (EML) and cathode electrode as an ETL in OLED device: ITO/2-TNATA (60 nm)/NPB (15 nm)/Alq3 (30 nm)/synthesized compounds (30 nm)/LiF (1 nm)/Al (200 nm). I-V characteristics of three devices were investigated at 20 mA/cm2. Operating voltages of three compounds were 7.06 V (IF-dione), 6.42 V (MonoF-IF-dione), 5.36 V (TriF-IF-dione), respectively.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP5695136	Indeno[1,2-b]fluorene-6,12-dione		5695-13-6	Price

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