U 4100 absorption spectrophotometer

All reagents were commercially available and used as supplied without further purification. Deuterated solvents were purchased from Cambridge Isotope Laboratory (Andover, MA). Compounds 2, 8, and 4^{46 (link)} were prepared according to modified literature procedures. NMR experiments were recorded at room temperature. ¹H NMR spectra were recorded in the designated solvents on a Varian Inova 400 MHz or a Bruker Avance 600 spectrometer. ³¹P{¹H} NMR spectra were recorded on a Varian Unity 300 NMR spectrometer, and ³¹P{¹H} NMR chemical shifts are referenced to an external unlocked sample of 85% H₃PO₄ (δ 0.0 ppm). Mass spectra were recorded on a Micromass Quattro II triple-quadrupole mass spectrometer using electrospray ionization with a MassLynx operating system. Ultraviolet–visible experiments were conducted on a Hitachi U-4100 absorption spectrophotometer. Fluorescence experiments were conducted on a Hitachi F-7000 fluorescence spectrophotometer.

All reagents were commercially available and used as supplied without further purification. Deuterated solvents were purchased from Cambridge Isotope Laboratory (Andover, MA). Compounds 5,^{51 (link)}6,^{51 (link)}7−10^{51 (link),66 (link)} were prepared according to modified literature procedures. NMR spectra were recorded at room temperature. 1H chemical shifts are reported relative to the residual solvent signals, and ³¹P{¹H} NMR chemical shifts are referenced to an external unlocked sample of 85% H₃PO₄ (δ = 0.0). Mass spectra were recorded on a Waters synapt G2 tandem mass spectrometer using electrospray ionization with a MassLynx operating system. Ultraviolet−visible experiments were conducted on a Hitachi U-4100 absorption spectrophotometer. Fluorescence experiments were conducted on a Hitachi F-7000 fluorescence spectrophotometer. Transmission electron microscopy investigations were performed on a JEM-2100EX instrument. For TEM, dispersions of the assemblies were dried onto carbon-coated copper support grids. A Zeiss Supra55 field-emission scanning electron microscope was used to investigate the assemblies. For scanning electron microscopy, dispersions of the assemblies were dried onto silicon wafers. High-resolution TEM and elemental mapping images were obtained using a Tecnai G2 F30 S-TWIN instrument.

All reagents were commercially available and used as supplied without further purification. Deuterated solvents were purchased from Cambridge Isotope Laboratory (Andover, MA). Compounds 1,^{12b (link)}4,^{17 (link)} and 5^{17 (link)} were prepared according to the published procedures. NMR spectra were recorded on a Varian Unity 300 MHz spectrometer. ¹H and ¹³C NMR chemical shifts are reported relative to residual solvent signals, and ³¹P{¹H} NMR chemical shifts are referenced to an external unlocked sample of 85% H₃PO₄ (δ 0.0). The UV–vis experiments were conducted on a Hitachi U-4100 absorption spectrophotometer. Mass spectra were recorded on a Micromass Quattro II triple-quadrupole mass spectrometer using electrospray ionization with a MassLynx software suite. The melting points were collected on a SHPSIC WRS-2 automatic melting point apparatus.