Figure 2 | The photothermal properties of diradicals and their nanoparticles. (IMAGE)
Caption
Figure 2 | The photothermal properties of diradicals and their nanoparticles. a, Smartphone-shot images of TTM-TTM and TT-CzPh in DMSO (concentration: 25 μg mL-1) (left) and the corresponding NIR fluorescence images captured with a 700 nm long-pass filter at excitation wavelength 655 nm (right). b, Photothermal heating and cooling curves (linear fit-ln(θ)-cooling time) for TT-CzPh (Solvent: DMSO). c, The particle size distributions of TT-CzPh NPs in aqueous solution were determined by DLS method. The insert is TEM image of TT-CzPh NPs, scale bar: 200 nm. d, NIR fluorescence images captured with a 700 nm long-pass filter at excitation wavelength 655 nm of TTM-TTM NPs and TT-CzPh NPs at different concentrations. e, Concentration-dependent temperature variation of TT-CzPh NPs in aqueous solution under 655 nm laser irradiation (1.0 W cm−2). f, Power-density-dependent temperature variation of TT-CzPh NPs aqueous solution (50 μg mL-1) under 655 nm laser irradiation. Photothermal heating and cooling curves of g TTM-TTM NPs and h TT-CzPh NPs with respect to the linear fitting −ln(θ) versus cooling time (50 μg mL-1, 655 nm, 1.0 W cm-2). i, Photothermal stability of TT-CzPh NPs after five on/off cycles of 655 nm laser irradiation (1.0 W cm−2).
Credit
Ting Liu et al.
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