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Title: Charge Transport in Novel Phenazine Fused Triphenylene Supramolecular Systems
Authors: Gowda, Ashwathanarayana
Jacob, Litwin
Singh, Dharmendra Pratap
Douali, Redouane
Kumar, Sandeep
Issue Date: 20-Jun-2018
Publisher: Wiley
Citation: Chemistry Select, 2018, Vol.3, p6551 – 6560
Abstract: Novel phenazine–fused triphenylene discotic liquid crystals (DLCs) tethered with alkanethiols and alkoxy chains are synthesized. The condensation of 4,5‐dibromobenzene‐1,2‐diamine with triphenylene‐1,2‐diquinone discotic core, followed by the reaction with alkanethiols gives heterocyclic phenazine–fused triphenylene based DLCs. The intermediate dibromo–substituted phenazine and final alkanethiol substituted phenazine–fused triphenylene derivatives exhibit a wide range of stable enantiotropic hexagonal columnar phase, which was characterised by polarized optical microscopy (POM), differential scanning calorimetry (DSC) and X‐ray diffraction (XRD) studies. We have also investigated the photophysical properties of all phenazine compounds using dilute solution of anhydrous chloroform. The charge carrier mobility was measured for one representative compound by time of flight method which revealed that phenazine–fused triphenylene discotic mesogen exhibits p‐type (hole) mobility of the order of 10−4 cm2 V−1 s−1. The novel mesogens reported here present a wide temperature stability with good charge mobility and optical properties. These mesogens have shown potential applications for solar cells, sensors, organic light emitting diodes and other electro‐optical device applications.
Description: Open Access
ISSN: 2365-6549 (Online)
Alternative Location:
Copyright: 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Appears in Collections:Research Papers (SCM)

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