The 1H and 13C NMR spectra of the 1 and 2 ligands were
obtained in CDCl3 solution at 25 °C on a Bruker ARX-400
spectrometer. Chemical shifts are reported relative to the residual
solvent signals. FTIR spectra were measured in the 4000–400
cm–1 range on a PerkinElmer spectrum I spectrometer
with samples prepared as KBr pellets. The UV–vis spectra were
recorded using 1 mM solution on an Agilent Cary 6000 spectrometer.
Electrospray ionization (ESI) mass spectrometry was performed using
a Thermo Scientific LTQ XL LC–MS instrument for the 50–2000
amu range. PXRD data were recorded on a Rigaku Ultima IV diffractometer
equipped with 3 kW sealed-tube Cu Kα X-ray radiation (generator
power settings: 40 kV and 40 mA) and a D/tex Ultra detector using
the BB geometry over the angle range 5–50° with a scanning
speed of 2°/min with 0.02° step. (2.5° primary and
secondary solar slits and 0.5° divergence slit with 10 mm height
limit slit). The surface morphology of the as-prepared samples was
examined using FESEM (JEOL, 8 or 15 kV). Fluorescence spectra were
recorded using a HORIBA Jobin-Yvon fluorescence spectrophotometer
with stirring attachment. Lifetime measurements of1 and 2 were carried out using the time-resolved HORIBA scientific
single photon counting controller.
obtained in CDCl3 solution at 25 °C on a Bruker ARX-400
spectrometer. Chemical shifts are reported relative to the residual
solvent signals. FTIR spectra were measured in the 4000–400
cm–1 range on a PerkinElmer spectrum I spectrometer
with samples prepared as KBr pellets. The UV–vis spectra were
recorded using 1 mM solution on an Agilent Cary 6000 spectrometer.
Electrospray ionization (ESI) mass spectrometry was performed using
a Thermo Scientific LTQ XL LC–MS instrument for the 50–2000
amu range. PXRD data were recorded on a Rigaku Ultima IV diffractometer
equipped with 3 kW sealed-tube Cu Kα X-ray radiation (generator
power settings: 40 kV and 40 mA) and a D/tex Ultra detector using
the BB geometry over the angle range 5–50° with a scanning
speed of 2°/min with 0.02° step. (2.5° primary and
secondary solar slits and 0.5° divergence slit with 10 mm height
limit slit). The surface morphology of the as-prepared samples was
examined using FESEM (JEOL, 8 or 15 kV). Fluorescence spectra were
recorded using a HORIBA Jobin-Yvon fluorescence spectrophotometer
with stirring attachment. Lifetime measurements of
single photon counting controller.