Tröger`s Base Decorated Arylketones for Application in PhOLEDs

Ishita Neogi ishitaneogi@yahoo.in Partha Jyoti Das Flavio Grynszpan
Chemical Sciences, Ariel University, Ariel, Israel

Tröger`s Base (TB) has fascinated chemists for decades due to its unique rigid V-shaped structure, chirality, C2-symmetry and potential applications as a building block in molecular recognition.1 The intrinsic V-shapeto TB facilitates the formation of molecular cavities for guest inclusion, and renders amorphous characteristics in the solid state.2 Therefore, we sought to exploit TB derivatives to develop materials that will allow uniform and pin-hole free thin films for application in phosphorescent organic light emitting diodes (PhOLEDs).3 We functionalized the TB-scaffold in order to generate high triplet energy host materials (TB-Bzs) towards applications as host layers in PhOLED devices, (Fig. 1). These TB-based host materials are decorated with different arylketones, In addition, TB-scaffold bestows high thermal stability to the prepared derivatives as required for PhOLEDs. The design rational, synthesis and studies of the photo-physical properties of our novel TB-substituted host materials will be presented.

Figure 1: TB-based host materials.

References:

1) Rúnarsson, O.V., Artacho, J., Wärnmark. K. Eur. J. Org. Chem. 2012, 7015-7041.

2) Neogi, I., Bajpai, A., Moorthy, J.N. J. Chem. Sci., 2014, 126, 1323-1329.

3) Neogi, I., Jhulki, S., Ghosh, A., Chow, T.J., Moorthy, J. N. ACS Appl. Mater. Interfaces 2015, 7, 3298-3305









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