Molecular modification of 2,7-diphenyl[1]benzothieno[3,2-b]benzothiophene (DPh-BTBT) with diarylamino substituents

From crystalline order to amorphous state in evaporated thin films

Takafumi Izawa, Hiroki Mori, Yusuke Shinmura, Masahito Iwatani, Eigo Miyazaki, Kazuo Takimiya, Hsio Wen Hung, Masayuki Yahiro, Chihaya Adachi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Introduction of diarylamino substituents on 2,7-dipheny][1]-benzothieno[3, 2-b]benzothiophene (DPh-BTBT) caused morphological change in the evaporated thin-film state: from highly crystalline films with edge-on molecular orientation for DPh-BTBT to amorphous films for the diarylamino derivatives. The former was unsuitable as a hole-transporting layer in organic light-emitting diodes (OLEDs), whereas the latter acted as a superior hole-transporting layer in multilayered OLEDs.

Original languageEnglish
Pages (from-to)420-421
Number of pages2
JournalChemistry Letters
Volume38
Issue number5
DOIs
Publication statusPublished - 2009
Externally publishedYes

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Organic light emitting diodes (OLED)
Crystalline materials
Thin films
Molecular orientation
Amorphous films
Derivatives
benzothiophene
diphenyl

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Molecular modification of 2,7-diphenyl[1]benzothieno[3,2-b]benzothiophene (DPh-BTBT) with diarylamino substituents : From crystalline order to amorphous state in evaporated thin films. / Izawa, Takafumi; Mori, Hiroki; Shinmura, Yusuke; Iwatani, Masahito; Miyazaki, Eigo; Takimiya, Kazuo; Hung, Hsio Wen; Yahiro, Masayuki; Adachi, Chihaya.

In: Chemistry Letters, Vol. 38, No. 5, 2009, p. 420-421.

Research output: Contribution to journalArticle

Izawa, Takafumi ; Mori, Hiroki ; Shinmura, Yusuke ; Iwatani, Masahito ; Miyazaki, Eigo ; Takimiya, Kazuo ; Hung, Hsio Wen ; Yahiro, Masayuki ; Adachi, Chihaya. / Molecular modification of 2,7-diphenyl[1]benzothieno[3,2-b]benzothiophene (DPh-BTBT) with diarylamino substituents : From crystalline order to amorphous state in evaporated thin films. In: Chemistry Letters. 2009 ; Vol. 38, No. 5. pp. 420-421.
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AU - Izawa, Takafumi

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AU - Takimiya, Kazuo

AU - Hung, Hsio Wen

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