Jump to main content
Jump to site search

Issue 6, 2015
Previous Article Next Article

Efficient 8-oxyquinolinato emitters based on a 9,10-dihydro-9,10-diboraanthracene scaffold for applications in optoelectronic devices

Author affiliations

Abstract

A detailed experimental characterization and theoretical evaluation of the optical as well as other relevant physicochemical properties of a series of 9,10-dihydro-9,10-diboraanthracene bis(8-oxyquinolinates) and a few other related systems is reported. The obtained compounds exhibit green luminescence with quantum yields of emission of up to 63% in CH2Cl2. Single crystal X-ray diffraction studies indicate that 9,10-dihydro-9,10-diboraanthracene complexes exist either as bent conformers (stabilized by a weak intramolecular CH⋯O interaction bringing two 8-oxyquinolinato ligands closer to each other) or symmetrical ones (bearing two ligands related by a centre of symmetry and separated from each other). Theoretical calculations revealed that the LUMO levels are lower for the bent conformers than for the symmetrical ones. This suggests that the luminescent properties of the studied compounds are affected by their specific structural properties. The obtained compounds were used as emitters for the construction of organic light emitting diodes (OLEDs). The highest luminance of ca. 2000 cd m−2 was recorded for the device containing only 2.0 wt% of the 1,6-difluoro-9,10-dihydro-9,10-diboraanthracene core in the poly(N-vinylcarbazole/2-t-butylphenyl-5-biphenyl-1,3,4-oxadiazole (PVK:PBD) matrix. The fabricated OLEDs exhibit current efficiency in the range from 0.5 to 1.1 cd A−1.

Graphical abstract: Efficient 8-oxyquinolinato emitters based on a 9,10-dihydro-9,10-diboraanthracene scaffold for applications in optoelectronic devices

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Oct 2014, accepted on 24 Nov 2014 and first published on 27 Nov 2014


Article type: Paper
DOI: 10.1039/C4TC02350A
Author version
available:
Download author version (PDF)
J. Mater. Chem. C, 2015,3, 1354-1364

  •   Request permissions

    Efficient 8-oxyquinolinato emitters based on a 9,10-dihydro-9,10-diboraanthracene scaffold for applications in optoelectronic devices

    K. Durka, I. Głowacki, S. Luliński, B. Łuszczyńska, J. Smętek, P. Szczepanik, J. Serwatowski, U. E. Wawrzyniak, G. Wesela-Bauman, E. Witkowska, G. Wiosna-Sałyga and K. Woźniak, J. Mater. Chem. C, 2015, 3, 1354
    DOI: 10.1039/C4TC02350A

Search articles by author

Spotlight

Advertisements