Structure-property relationship of 4-substituted-spirobifluorenes as hosts for phosphorescent organic light emitting diodes: an overview
Abstract
The aim of the present review is to report the state of the art of an emerging family of molecules, namely 4-substituted spirobifluorenes (SBFs). Their syntheses, physico-chemical and photophysical properties and applications as hosts in Phosphorescent Organic Light-Emitting diodes (PhOLEDs) are described through a structure-property relationship approach. Although substitution at position 2 of a SBF core has been widely developed, substitution at position 4 is very recent (less than 10 years) and stills need to be explored.
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