Please use this identifier to cite or link to this item:
|Title:||Large femtosecond two-photon absorption cross sections of fullerosome vesicle nanostructures derived from a highly photoresponsive amphiphilic C 60-light-harvesting fluorene dyad||Authors:||Wang, M.
|Issue Date:||29-Sep-2011||Citation:||Wang, M., Nalla, V., Jeon, S., Mamidala, V., Ji, W., Tan, L.-S., Cooper, T., Chiang, L.Y. (2011-09-29). Large femtosecond two-photon absorption cross sections of fullerosome vesicle nanostructures derived from a highly photoresponsive amphiphilic C 60-light-harvesting fluorene dyad. Journal of Physical Chemistry C 115 (38) : 18552-18559. ScholarBank@NUS Repository. https://doi.org/10.1021/jp207047k||Abstract:||We demonstrated ultrafast femtosecond nonlinear optical (NLO) absorption characteristics of bilayered fullerosome vesicle nanostructures derived from molecular self-assembly of amphiphilic oligo(ethylene glycolated) C 60-(light-harvesting diphenylaminofluorene antenna). Fullerene conjugates were designed to enhance photoresponse in a femtosecond time scale by applying an isomerizable periconjugation linker between the C60 cage and a diphenylaminofluorene antenna subunit in an intramolecular contact distance of only DPAF-EG 12C1)-based fullerosome nanovesicles in H2O was characterized to consist of a bilayered shell with a sphere diameter of 20-70 nm and a chromophore shell width of 9.0-10 nm, fitting well with a head-to-head packing configuration of the molecular length. At the estimated effective nanovesicle concentration as low as 5.5 × 10-8 MV (molecular molar concentration of 5.0 × 10-4 M) in H2O, two-photon absorption (2PA) phenomena were found to be the dominating photophysical events showing a large molar concentration-insensitive 2PA cross-section value equivalent to 8500 GM in a form of nanovesicles, on average. The observed NLO characteristics led to a sharp trend of efficient light-transmittance intensity reduction at the input laser intensity above 100 GW/cm2. © 2011 American Chemical Society.||Source Title:||Journal of Physical Chemistry C||URI:||http://scholarbank.nus.edu.sg/handle/10635/97038||ISSN:||19327447||DOI:||10.1021/jp207047k|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Apr 15, 2019
WEB OF SCIENCETM
checked on Apr 15, 2019
checked on Apr 6, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.