1H NMR spectra were recorded on
a Bruker AV-300N spectrometer at 300 MHz. Deuterated chloroform (CDCl3) was used as the solvent, and tetramethylsilane as an internal
standard. High-performance liquid chromatography (HPLC) was performed
using a Hitachi L-7150/L-2400 HPLC system equipped with a Kanto Chemical
Mightysil Si 60 column. PXRD profiles were recorded on a Rigaku MiniFlex
600 diffractometer using Cu Kα radiation (λ = 1.54184
Å). The nanoparticle size was determined by the DLS (Sysmex Zetasizer
Nano ZS) analysis. DSC was performed using a Hitachi DSC7000X instrument.
Absorption spectra were measured with a JASCO V-560 absorption spectrophotometer.
Photoirradiation in solution was conducted using a 200 W mercury-xenon
lamp (MORITEX MUV-202) as a light source. Monochromatic light was
obtained by passing the light through a monochromator (Jobin Yvon
H10 UV) and glass filters. Fluorescence spectra were measured with
a Hitachi F-2700 fluorescence spectrophotometer. Fluorescence quantum
yields were determined with a JASCO FP-8300 fluorescence spectrophotometer
equipped with a JASCO ILF-835 integrating sphere. All samples in solutions
were deaerated by bubbling with argon gas for 5 min before the measurements.
a Bruker AV-300N spectrometer at 300 MHz. Deuterated chloroform (CDCl3) was used as the solvent, and tetramethylsilane as an internal
standard. High-performance liquid chromatography (HPLC) was performed
using a Hitachi L-7150/L-2400 HPLC system equipped with a Kanto Chemical
Mightysil Si 60 column. PXRD profiles were recorded on a Rigaku MiniFlex
600 diffractometer using Cu Kα radiation (λ = 1.54184
Å). The nanoparticle size was determined by the DLS (Sysmex Zetasizer
Nano ZS) analysis. DSC was performed using a Hitachi DSC7000X instrument.
Absorption spectra were measured with a JASCO V-560 absorption spectrophotometer.
Photoirradiation in solution was conducted using a 200 W mercury-xenon
lamp (MORITEX MUV-202) as a light source. Monochromatic light was
obtained by passing the light through a monochromator (Jobin Yvon
H10 UV) and glass filters. Fluorescence spectra were measured with
a Hitachi F-2700 fluorescence spectrophotometer. Fluorescence quantum
yields were determined with a JASCO FP-8300 fluorescence spectrophotometer
equipped with a JASCO ILF-835 integrating sphere. All samples in solutions
were deaerated by bubbling with argon gas for 5 min before the measurements.