Observation of dual room temperature fluorescence–phosphorescence in air, in the crystal form of a thianthrene derivative

Pander, P. et al. (2018) Observation of dual room temperature fluorescence–phosphorescence in air, in the crystal form of a thianthrene derivative. Journal of Physical Chemistry C, 122(43), pp. 24958-24966. (doi: 10.1021/acs.jpcc.8b08329)

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Abstract

Thianthrenes have been nearly forgotten as phosphors in recent years, but are now coming back, showing their strong potential in luminescent applications. Here, we present a comprehensive photophysical study of a carbazolyl derivative of thianthrene in different matrices and environments. The diffusion of oxygen is slowed down in the rigid environment of thianthrene organic crystals, suppressing their phosphorescence quenching.Triplet–triplet annihilation is also not significantly active in these systems. Both conditions facilitate the observation of simultaneous fluorescence and phosphorescence emissions at room temperature, in air, giving origin to strong white luminescence. Moreover, the color coordinates of the dual fluorescence–phosphorescence white emission, which is observed only in rigid amorphous media and in crystals, can be tuned.

Item Type:Articles
Additional Information:P.P., R.P., and A.K. thank the European Union for financial support from EU’s Horizon 2020 for funding the EXCILIGHT project under Grant Agreement No. 674990. R.T. acknowledges the EU’s Horizon 2020 for funding the ORZEL project under Grant Agreement No. 691684.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Skabara, Professor Peter and Klimash, Ms Anastasiia
Authors: Pander, P., Swist, A., Turczyn, R., Pouget, S., Djurado, D., Lazauskas, A., Pashazadeh, R., Grazulevicius, J. V., Motyka, R., Klimash, A., Skabara, P. J., Data, P., Soloducho, J., and Dias, F. B.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of Physical Chemistry C
Publisher:American Chemical Society
ISSN:1932-7447
ISSN (Online):1932-7455
Published Online:09 October 2018

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