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Proceedings Paper

Synthesis of dual NIR two-photon absorptive [60]fullerenyl multiadducts for nonlinear light-transmittance reduction application
Author(s): Seaho Jeon; Min Wang; Taizoon Canteenwala; Loon-Seng Tan; Wei Ji; Thomas Cooper; Long Chiang
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Paper Abstract

Synthesis of several C60-(antenna)x conjugates was performed to demonstrate high flexibility in the design of organic nonlinear optical (NLO) nanostructures showing broadband characteristics with capability to absorb light over a wide range of wavelengths. It was achieved by covalent attachment of a hybrid combination of two types of light-harvesting fluorescent antenna chromophores on a C60 cage. Ultrafast photoresponsive intramolecular Föster resonance energy-transfer among antenna units and shared excited energy-accepting C60 cage is proposed as a plausible mechanism to enhance the broadband NLO ability. Characterization of the branched triad C60(>DPAF-C18)(>CPAF-C2M) and the tetrad C60(>DPAF-C18)(>CPAF-C2M)2 was carried out by various spectroscopic techniques. These compounds showed approximately equal extinction coefficients of optical absorption over 400‒550 nm that corresponds to near-IR two-photon based excitation wavelengths at 780‒1100 nm. These nanomaterials may be utilized in NLO coatings for achieving efficient light-transmittance reduction at the same NIR wavelengths.

Paper Details

Date Published: 7 October 2014
PDF: 10 pages
Proc. SPIE 9181, Light Manipulating Organic Materials and Devices, 918105 (7 October 2014); doi: 10.1117/12.2060935
Show Author Affiliations
Seaho Jeon, Univ. of Massachusetts Lowell (United States)
Min Wang, Univ. of Massachusetts Lowell (United States)
Taizoon Canteenwala, Univ. of Massachusetts Lowell (United States)
Loon-Seng Tan, Air Force Research Lab. (United States)
Wei Ji, National Univ. of Singapore (Singapore)
Thomas Cooper, Air Force Research Lab. (United States)
Long Chiang, Univ. of Massachusetts Lowell (United States)

Published in SPIE Proceedings Vol. 9181:
Light Manipulating Organic Materials and Devices
Jean-Michel Nunzi, Editor(s)

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