Abstract
Novel compounds endowed with a high two-photon absorption (TPA) cross-section and a high singlet oxygen quantum yield, are sought after for their possible application in anti-cancer therapies. In this paper we present a prototype macromolecule bearing a distyrylbenzene dimer as TPA unit and a [60]fullerene moiety for singlet oxygen generation. Linear absorption and emission spectra are measured, to help understanding the interactions between the single molecular units. The TPA absorption properties of the distyrylbenzene alone as well as bound to the methanofullerene unit are recorded with the TPA-induced fluorescence technique. An appreciable enhancement of the TPA cross-section was observed in the molecular conjugate.Singlet oxygen generation has been detected exciting the sample both in the Vis and NIR through one- and two-photon absorption processes, respectively. Although functionalization decreases the overall singlet oxygen quantum yield of fullerene, the presence of the distyrylbenzene antenna allows two-photon generation of singlet oxygen through an energy transfer process.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.