Expanded porphyrins as third order non-linear optical materials: Some structure-function correlations |
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| Authors: | Sabapathi Gokulnath and Tavarekere K Chandrashekar |
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| Institution: | (1) Department of Chemistry, Indian Institute of Technology, Kanpur, 208 016, India;(2) Present address: National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, 695 019, India |
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| Abstract: | In this paper, the non-linear optical properties of representative core-modified expanded porphyrins have been investigated
with an emphasis on the structure-property relationship between the aromaticity and conformational behaviour. It has been
shown that the measured two-photon absorption cross section (σ
2) values depend on the structure of macrocycle, its aromaticity and the number of π-electrons in conjugation. |
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| Keywords: | Expanded porphyrins conjugation aromaticity conformation TPA cross section |
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