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DC Field | Value | Language |
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dc.contributor.author | Sarkar, P. | - |
dc.contributor.author | Das, B.K. | - |
dc.contributor.author | Chakraborty, D. | - |
dc.contributor.author | Muthamma, K. | - |
dc.date.accessioned | 2020-03-31T08:18:39Z | - |
dc.date.available | 2020-03-31T08:18:39Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Journal of Molecular Structure, 2019, Vol.1195, , pp.309-314 | en_US |
dc.identifier.uri | http://idr.nitk.ac.in/jspui/handle/123456789/10145 | - |
dc.description.abstract | Synthesis and structural features of helical nanographene molecules comprising of seven benzene rings are examined. Thus dibutyl-dicarboxylate functional [7]helicene and its two regioisomers, dinaphtho[1,2 a:1?,2? h]anthracene and naphtho[2,1 c]pentahelicene, have been synthesized in two steps through Perkin approach using napthalene-2-acetic acid and ortho- or meta-phthalaldehydes. The feasibility of this approach to construct sulfur doped twisted dithiaarenes is also investigated by using thiophene-3-acetic acid. While dithiaarenes from meta-phthalaldehyde remains challenging, synthesis and characterization of planar anthra[1,2 b:5,6 b']dithiophene and twisted 1,12-dithiapentahelicene is successful from ortho-phthalaldehyde. Conformational analysis with DFT calculation shows unique helicity preference in such doubly helical carbon nanostructures. Absorption and emission behavior of these ?-extended molecules shows enhanced conjugation. 2019 Elsevier B.V. | en_US |
dc.title | Carbohelicenes and thiahelicene from phthalaldehydes through Perkin approach | en_US |
dc.type | Article | en_US |
Appears in Collections: | 1. Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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1 Carbohelicenes and thiahelicene.pdf | 1.05 MB | Adobe PDF | View/Open |
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