Tetraphenylethylene substituted thienothiophene and dithienothiophene derivatives: synthesis, optical properties and OLED applications

Isci R., Tekin E., Kaya K., Piravadili Mucur S., Gorkem S. F., Öztürk T.

JOURNAL OF MATERIALS CHEMISTRY C, cilt.8, sa.23, ss.7908-7915, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 23
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1039/d0tc01715a
  • Dergi Adı: JOURNAL OF MATERIALS CHEMISTRY C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.7908-7915
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Thieno[3,2-b]thiophene (TT) and dithieno[3,2-b;3,2-d]thiophene (DTT) have drawn immense attention in the field of electronics and optoelectronics. In this work, the first examples of TTs (TPE2-TTandTPE3-TT) and a DTT (TPE2-DTT), having tetraphenylethylene (TPE) at the periphery exhibiting aggregation induced emission (AIE) in OLEDs, were designed and synthesized by the Suzuki coupling reaction. Their properties were investigated through experimental and computational studies, as well as X-ray diffraction and DFT optimization.TPE2-TTshowed excellent device performance with a maximum luminance of 11 620 cd m(-2), a maximum current efficiency of 6.17 cd A(-1)and a maximum external quantum efficiency of 2.43%. Moreover, these synthetically easily accessible molecules have high thermal stability, which makes them perfectly suitable for optical applications.