Jump to main content
Jump to site search


Solvent-sensitive circularly polarized luminescent compounds bearing a 9,9′-spirobi[fluorene] skeleton

Author affiliations

Abstract

A series of chiral 9,9′-spirobi[fluorene] (SBF) derivatives with diphenylamino donor and cyano acceptor units were designed as a new family of circularly polarized luminescent materials. The designed SBF derivatives were successfully synthesized from 7,7′-dibromo-9,9′-spirobi[fluorene]-2,2′-diol. No racemization occurred in the synthetic sequence. Therefore, each enantiomer of the SBF derivatives can be prepared from the enantiomerically pure starting material. Absorption and fluorescence spectroscopy and theoretical calculations revealed that the phenylene linker between the donor/acceptor units and the SBF core has a great impact on their photophysical properties. In particular, the phenylene linker was found to induce a red shift in their emission bands. The obtained chiral SBF derivatives exhibited solvent-dependent circularly polarized luminescence owing to their donor–π–acceptor structures.

Graphical abstract: Solvent-sensitive circularly polarized luminescent compounds bearing a 9,9′-spirobi[fluorene] skeleton

Back to tab navigation

Supplementary files

Article information


Submitted
17 Dec 2019
Accepted
16 Mar 2020
First published
17 Mar 2020

Org. Biomol. Chem., 2020, Advance Article
Article type
Paper

Solvent-sensitive circularly polarized luminescent compounds bearing a 9,9′-spirobi[fluorene] skeleton

M. Kubo, K. Takase, K. Noguchi and K. Nakano, Org. Biomol. Chem., 2020, Advance Article , DOI: 10.1039/C9OB02681A

Social activity

Search articles by author

Spotlight

Advertisements