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Molecules. 2013 Aug 12;18(8):9603-22. doi: 10.3390/molecules18089603.

Synthesis of photoresponsive dual NIR two-photon absorptive [60]fullerene triads and tetrads.

Author information

1
Department of Chemistry, Institute of Nanoscience and Engineering Technology, University of Massachusetts, Lowell, MA 01854, USA.

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-C(2M)) and tetrad C₆₀(>DPAF-C₁₈)(>CPAF-C(2M))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.

PMID:
23941881
PMCID:
PMC3830959
DOI:
10.3390/molecules18089603
[Indexed for MEDLINE]
Free PMC Article

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