Synthesis and Crystal Structure of Highly Strained [4]Cyclofluorene: Green-Emitting Fluorophore

Yu Yu Liu, Jin Yi Lin, Yi Fan Bo, Ling Hai Xie, Ming Dong Yi, Xin Wen Zhang, Hong Mei Zhang, Teck Peng Loh, Wei Huang

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

[4]Cyclo-9,9-dipropyl-2,7-fluorene ([4]CF) with the strain energy of 79.8 kcal/mol is synthesized in high quantum yield. Impressively, hoop-shaped [4]CF exhibits a green fluorescence emission around 512 nm offering a new explanation for the green band (g-band) in polyfluorenes. The solution-processed [4]CF-based organic light emitting diode (OLED) has also been fabricated with the a stronger green band emission. Strained semiconductors offer a promising approach to fabricating multifunctional optoelectronic materials in organic electronics and biomedicine.

Original languageEnglish
Pages (from-to)172-175
Number of pages4
JournalOrganic Letters
Volume18
Issue number2
DOIs
StatePublished - 15 Jan 2016
Externally publishedYes

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