Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/98181
Title: Synthesis and optical properties of[C60/C70]fullerene derivatives containing spirobifluorene and imidazole units
Authors: Li, C.
Zeng, H.
Ouyang, X.
Wang, R.
Ji, W. 
Keywords: [C 60/C70]fullerene derivatives
Design and synthesis
Femtosecond laser systems
Optical limiting properties
Spirobifluorene
Triphenylimidazole
Issue Date: Mar-2011
Source: Li, C.,Zeng, H.,Ouyang, X.,Wang, R.,Ji, W. (2011-03). Synthesis and optical properties of[C60/C70]fullerene derivatives containing spirobifluorene and imidazole units. Journal of Optoelectronics and Advanced Materials 13 (3) : 237-244. ScholarBank@NUS Repository.
Abstract: Aseries of [C60/C70]]fullerene derivatives containing different spirobifluorene and triphenyl imidazole were synthesized andconfirmed by IR, 1H NMR, 13C NMR, MALDI-TOF-MS. Their optical limiting properties were investigated by nanosecond and femtosecond laser systems. Results showed that fullerene derivatives exhibited high optical limiting properties.Lower OL thresholds of 13.7, 14.9, 15.3, 23.3, and 24.0 J/cm2were observed for C70-SBF, C60-TPI, C 60-SBF, C60-FSBF, and C60-BTPI respectively with the linear transmittance of 75%, which implied that these optical limiting properties increased with the degree of conjugation and electron-donating or electron-accepting abilities of donors or acceptors in donor-acceptor (D-A) structures. The strong D and A with large conjugation is an effective way to enhance OL properties.
Source Title: Journal of Optoelectronics and Advanced Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/98181
ISSN: 14544164
Appears in Collections:Staff Publications

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