92
3 Luminescent Mechanochromism of a Chiral Complex: Distinct …
mechanochromism of racemic and homochiral compounds that display distinct emission colors. These results indicate that the introduction of chirality can be a promising
structure modification to fine tune the properties of mechanochromic materials.
3.7 Experimental Section
3.7.1 General
All commercially available reagents and solvents are of reagent grade and were
used without further purification unless otherwise noted. Solvents for the synthesis
were purchased from commercial suppliers, degassed by three freeze-pump-thaw
cycles and further dried over molecular sieves (4 Å). NMR spectra were recorded
on a JEOL JNM-ECX400P or JNM-ECS400 spectrometer (
1 H: 400 MHz;
13 C:
99.5 MHz) using tetramethylsilane and CDCl 3 as internal standards, respectively.
Emission spectra were recorded on a Hitachi F-7000 spectrometer. The emission
quantum yields of the solid samples were recorded on a Hamamatsu QuantaurusQY spectrometer with an integrating sphere. Emission lifetime measurements were
recorded on a Hamamatsu Quantaurus-Tau spectrometer. Elemental analyses and
low- and high-resolution mass spectra were recorded at Global Facility Center, Creative Research Institution, Hokkaido University. Photographs were obtained using
Olympus BX51 or SZX7 microscopes with Olympus DP72, Nikon D5100 or RICOH
CX1 digital cameras. Thermal gravimetric analysis profiles were recorded on Bruker
TG-DTA2010SAT.
3.7.2 Optical Properties of Solution Phase
See Figs. 3.6 and 3.7.
3.7.3 Photophysical Properties of Each Solid Phase
See Fig. 3.8 and Table 3.2.
3.7.4 TGA Profiles
See Fig. 3.9.
3 Luminescent Mechanochromism of a Chiral Complex: Distinct …
mechanochromism of racemic and homochiral compounds that display distinct emission colors. These results indicate that the introduction of chirality can be a promising
structure modification to fine tune the properties of mechanochromic materials.
3.7 Experimental Section
3.7.1 General
All commercially available reagents and solvents are of reagent grade and were
used without further purification unless otherwise noted. Solvents for the synthesis
were purchased from commercial suppliers, degassed by three freeze-pump-thaw
cycles and further dried over molecular sieves (4 Å). NMR spectra were recorded
on a JEOL JNM-ECX400P or JNM-ECS400 spectrometer (
1 H: 400 MHz;
13 C:
99.5 MHz) using tetramethylsilane and CDCl 3 as internal standards, respectively.
Emission spectra were recorded on a Hitachi F-7000 spectrometer. The emission
quantum yields of the solid samples were recorded on a Hamamatsu QuantaurusQY spectrometer with an integrating sphere. Emission lifetime measurements were
recorded on a Hamamatsu Quantaurus-Tau spectrometer. Elemental analyses and
low- and high-resolution mass spectra were recorded at Global Facility Center, Creative Research Institution, Hokkaido University. Photographs were obtained using
Olympus BX51 or SZX7 microscopes with Olympus DP72, Nikon D5100 or RICOH
CX1 digital cameras. Thermal gravimetric analysis profiles were recorded on Bruker
TG-DTA2010SAT.
3.7.2 Optical Properties of Solution Phase
See Figs. 3.6 and 3.7.
3.7.3 Photophysical Properties of Each Solid Phase
See Fig. 3.8 and Table 3.2.
3.7.4 TGA Profiles
See Fig. 3.9.