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|Title:||Nonlinear optical transmission properties of C60 dyads consisting of a light-harvesting diphenylaminofluorene antenna|
|Authors:||Elim, H.I. |
|Citation:||Elim, H.I., Jeon, S.-H., Verma, S., Ji, W., Tan, L.-S., Urbas, A., Chiang, L.Y. (2008-08-14). Nonlinear optical transmission properties of C60 dyads consisting of a light-harvesting diphenylaminofluorene antenna. Journal of Physical Chemistry B 112 (32) : 9561-9564. ScholarBank@NUS Repository. https://doi.org/10.1021/jp8050356|
|Abstract:||Highly enhanced nonlinear absorption cross section values of C 60(>DPAF-C2M), C60(>DPAF-C9), and C60(>DPAF-C10) dyads were detected up to 5400, 9700, and 14000 GM, respectively, in the 2.0 ps region in toluene at the concentration of 1.5 × 10-3 M. They were correlated to a trend showing higher efficiency in light transmittance attenuation down to 39-46% for the dyads C60(>DPAF-C10) and C60DPAF-C 9) with the increase of irradiance intensity up only to 140 GW/cm2. The phenomena were attributed to additional enhancement on the excited-state absorption of 1C60*(>DPAF- Cn) in the subpicosecond to picosecond region over the two-photon absorption of C60(>DPAF-Cn) in the femtosecond region. Its accumulative 2.0 ps absorption cross sections were estimated to be 8900 GM for 1C60*(>DPAF-C9), roughly one order of magnitude higher than its intrinsic femtosecond 2PA cross sections. © 2008 American Chemical Society.|
|Source Title:||Journal of Physical Chemistry B|
|Appears in Collections:||Staff Publications|
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