Abstract
A difluoroboron β-diketonate derivative(BF2-bisUPy)and a porphyrin derivative (Por(Pt)-bisUPy)bearing bis-2-ureido-4[1H]-pyrimidinone (bisUPy)were assembled into a supramolecular polymer by quadruple hydrogen bonding, which afforded uniformly water-dispersed supramolecular polymer nanoparticles by microemulsion method. Scanning electron microscopy shows that the obtained nanoparticles have a particle size of about 60 nm. Ultraviolet-visible absorption spectroscopy, fluorescence emission spectroscopy and lifetime decay experiments have demonstrated the occurrence of efficient energy transfer between BF2-bisUPy and Por(Pt)-bisUPy. BF2-bisUPy has excellent two-photon absorption performance, which can be used as an energy donor to enhance the luminescence properties of Por(Pt)-bisUPy under two-photon excitation by fluorescence resonance energy transfer(FRET). The prepared supramolecular polymer nanoparticles have strong fluorescence and phosphorescence dual-emission under two-photon excitation. The nanomaterials can enter cells and exhibit excellent biocompatibility. It also exhibits bright bioimaging with dual-emission under two-photon excitation.
| Translated title of the contribution | Construction of Two-photon Excited Supramolecular Polymer Nanoparticles and Their Bioimaging Application |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 136-145 |
| Number of pages | 10 |
| Journal | Yingxiang Kexue yu Guanghuaxue/Imaging Science and Photochemistry |
| Volume | 37 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1 Mar 2019 |
| Externally published | Yes |