RELATIONSHIP OF MOLECULAR STRUCTURE TO NONLINEAR OPTICAL PROPERTIES OF ORGANIC HETEROCYCLIC COMPOUNDS
2008 ◽
Vol 17
(03)
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pp. 275-283
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Keyword(s):
The nonlinear optical properties of heterocyclic compounds (1-7) were investigated. π-Centers benzo[1,2-b:4,3-b']dithiophene (1) and trithia[5]helicene (5) were studied. Compounds 2-4, 6 and 7 possess either donor-π (D-π) or donor-π-acceptor (D-π-A) structures. The optimized geometry of 7 shows a 3D helical structure. Two-photon absorption cross-sections related to the third-order nonlinear susceptibility were measured using open-aperture Z-scan techniques. Compound 7 has a two-photon absorption cross-section of 103 GM when excited at 720 nm. Important molecular structure-nonlinear optical property relationships are formulated.
2010 ◽
Vol 283
(7)
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pp. 1514-1518
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2016 ◽
Vol 18
(24)
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pp. 16404-16413
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2002 ◽
Vol 209
(4-6)
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pp. 461-466
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2001 ◽
Vol 190
(1-6)
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pp. 345-349
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2014 ◽
Vol 67
(17)
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pp. 2911-2924
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2008 ◽
Vol 108
(5)
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pp. 3218-3224
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2002 ◽
Vol 121
(6-7)
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pp. 339-344
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