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Title: Carbon dot-dispersed hexabutyloxytriphenylene discotic mesogens: structural, morphological and charge transport behavior†
Authors: Mahesh, Pruthvi
Shah, Asmita
Swamynathan, K
Kumar, Sandeep
+2 Co-Authors
Issue Date: Jul-2020
Publisher: Royal Society of Chemistry
Citation: Journal of Materials Chemistry C, 2020, Vol.8, p9252-9261
Abstract: Triphenylene-core grafted 2,3,6,7,10,11-hexabutyloxytriphenylene (HAT4) discotic mesogens were synthesized and their composite matrices have been prepared by dispersing different concentrations of carbon dots (C-dots). The structural, morphological, and charge transport behaviors of the neat and composite matrices have been studied as a function of dopant concentration. The triphenylene matrix remains invariant after the controlled dispersion of quantum sized C-dots; nevertheless, the electronic and transport properties of the neat matrix have been changed significantly. The percolated network of C-dots in the HAT4 matrix offers 102 and 103 times higher conduction current in the columnar and crystalline phases, respectively; however, the charge carrier mobility is found to be reduced due to the surface-recombination and the change in the columnar ordering. In the Colhp phase, the HAT4/C-dots matrix exhibited maximum conductivity and charge mobility of the order of 10−6 S m−1 and 10−2 cm2 V−1 s−1, respectively. The superior behavior of the HAT4/C-dot composites, which could overcome the poor conductivity of organic semiconductors, indicates their potential for practical applications in organic semiconducting devices and optoelectronics.
Description: Restricted Access
ISSN: 2050-7526
Alternative Location:
Copyright: 2020 Royal Society of Chemistry
Additional information: Supplementary Information Available
Appears in Collections:Research Papers (SCM)

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