Abstract
Abstract : We demonstrated the design, synthesis, structural characterization, and study of photophysical properties of ultrafast photoresponsive starburst and dendritic C60/C70-light harvesting antenna-based organic nanostructures for broadband nonlinear optical (NLO) nanomaterial applications. These organic NLO nanostructures exhibit both ultrafast photoresponse and a large cross-section of two-photon absorption (2PA) throughout a wide NIR spectrum may make them also suitable for use as nonlinear biophotonic materials. With hybrid C60-(antenna)x analogous as branched triad and tetrad starburst nanostructures, 2PA characteristics at multiple NIR wavelengths provided support for their suitability in uses as broadband NLO nanomaterials at 600 1100 nm that includes the 2PA ability of two antenna, DPAF (700 850 nm) and CPAF (850 1100 nm), and the fullerene cage at shorter wavelengths (600 700 nm) to build broadband NLO characteristics. A new molecular encapsulation of C70-(antenna)1or2 conjugates by helical st-PMMA was also perform.
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