Abstract: Broadband nonlinear optical (NLO) organic nanostructures exhibiting both ultrafast photoresponse and a large cross-section of two-photon absorption throughout a wide NIR spectrum may make them suitable for use as nonlinear biophotonic materials. We report here the synthesis and characterization of two C60-(antenna)x analogous compounds as branched triad C60(>DPAF-C18)(>CPAF-C2M) and tetrad C60(>DPAF-C18)(>CPAF-C2M)2 nanostructures. 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 780–1,100 nm. Accordingly, they may be utilized as potential precursor candidates to the active-core structures of photosensitizing nanodrugs for 2γ-PDT in the biological optical window of 800–1,050 nm.
Keywords: C60-(antenna)x nanostructures; ultrafast intramolecular energy-transfer; NIR two-photon absorption; 2γ-photodynamic therapeutic agent; photosensitizer
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Jeon, S.; Wang, M.; Tan, L.-S.; Cooper, T.; Hamblin, M.R.; Chiang, L.Y. Synthesis of Photoresponsive Dual NIR Two-Photon Absorptive Fullerene Triads and Tetrads. Molecules 2013, 18, 9603-9622.
Jeon S, Wang M, Tan L-S, Cooper T, Hamblin MR, Chiang LY. Synthesis of Photoresponsive Dual NIR Two-Photon Absorptive Fullerene Triads and Tetrads. Molecules. 2013; 18(8):9603-9622.
Jeon, Seaho; Wang, Min; Tan, Loon-Seng; Cooper, Thomas; Hamblin, Michael R.; Chiang, Long Y. 2013. "Synthesis of Photoresponsive Dual NIR Two-Photon Absorptive Fullerene Triads and Tetrads." Molecules 18, no. 8: 9603-9622.