Characterization and photophysical properties of XS nanoparticles. (IMAGE)

Engineering

Characterization and photophysical properties of XS nanoparticles.

Caption

(a) Emissions of 2-positioned TX powders under X-ray irradiation. (b) Mechanism and molecular structures of 2-positioned TX. (c) Transmission electron microscopy (TEM) image and size distribution of the prepared ip-TX nanoparticles. (d) Photoluminescence (black line) and radioluminescence (red line) spectra of the nanoparticles. (e) Radioluminescence spectra of ip-TX were obtained under X-ray irradiation with different tube voltages. (f) Absorbance of the clinically used PS, verteporfin, and overlay of the radioluminescence of ip-TX. (g) TEM image and hydrodynamic diameter of the prepared Vip-TX. (h) Zeta potentials of ip-TX, verteporfin, and Vip-TX. (i) Fourier-transform infrared (FT-IR) spectra of ip-TX, verteporfin, and Vip-TX. XEOL: X-ray excited optical luminescence; S: singlet; T: triplet; ip-TX: 2-alkxxythioxanthone (R = –CH(CH3)2); Vip-TX: verteporfin-conjugated ip-TX; VP: verteporfin molecules encapsulated in 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[amino(polyethylene glycol)]; ISC: intersystem crossing.

Credit

Nuo Lin et al.

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License

CC BY-NC-ND

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