Abstract
We report herein the two step synthesis of asymmetrically substituted fused heterocyclic ladder oligomer, 11-nitrobenzo[a][1,4]benzothiazino[3,-c]phenoxazine (2) and its single crystal structure. Compound 2 crystallizes in the orthorhombic space group Fdd2 with unit cell dimensions: a = 6.7497(9) Å; b = 52.478(7) Å; c = 18.832(3) Å and α = β = γ = 90°. Each unit cell contains 16 molecules. π–π Stack distances of 3.9 and 3.39 Å and short contacts of N–O…H–C distance of 2.43 Å were observed within the unit cell. Furthermore, its optical band gap was estimated be 1.85 eV. These materials are of interest for variety of applications due to their unique optical and electrical properties.
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Acknowledgments
We are very grateful for the help of Dr. Victor Young Jr. and director of the X-Ray facility at the Department of Chemistry, University of Minnesota with solving the crystal structure reported.
Funding
We would like to thank the funding from Wilkes University Department of Chemistry and Biochemistry and the Department of Electrical Engineering and Physics for funding of the project. P. Pham acknowledges support from Penn State Scranton for Professional and Research Development funding.
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Fiester, C., Pham, PT.T., Bradley, A. et al. Synthesis and characterization of a novel asymmetric fused ladder oligomer for applications as organic semiconductor. MRS Advances 8, 889–893 (2023). https://doi.org/10.1557/s43580-023-00609-y
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DOI: https://doi.org/10.1557/s43580-023-00609-y