Static absorption (Shimadzu UV-1800) and emission (Horiba Nanolog) and other measurements were performed on dilute (μM), Ar-purged solutions in toluene at room temperature. Fluorescence quantum yields (Φf) utilized samples with A ≤ 0.1 at the excitation wavelength and were obtained by absolute measurements (Horiba QuantiPhi). Values for several arrays were also obtained by relative Φf measurements using meso-tetraphenylporphyrin in non-degassed toluene (Φf = 0.070)30 (link) as a standard and gave the same values as the absolute measurements within experimental uncertainty (±5% of the reported value).
Uv 1800
Manufactured by Horiba
The UV-1800 is a UV-Vis spectrophotometer designed for laboratory use. It measures the absorbance or transmittance of light in the ultraviolet and visible light spectrum.
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Lab products found in correlation
2 protocols using uv 1800
1
Fluorescence Quantum Yield Measurements
2
Optical Characterization of Compounds
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Static absorption (Shimadzu UV-1800), static emission (Horiba Nanolog; PTI Quantamaster), and other measurements were performed at room temperature on dilute (mM), Ar-purged solutions of compounds in toluene. Some absorption spectra were acquired at 295 or 77 K on samples in 2-methyltetrahydrofuran. Determination of F f values utilized samples with A r 0.1 at the excitation wavelength and used mesotetraphenylporphyrin in non-degassed toluene (F f = 0.070) 45 or Phen-BC (F f = 0.004) 21 as a standard. Transient absorption (TA) studies utilized an ultrafast laser system with (0.5-1 mJ) B100 fs excitation flashes from a 1 kHz Ti:sapphire laser system (Spectra Physics) and Helios spectrometer (Ultrafast Systems). TA data were analyzed using Surface Xplorer (Ultrafast Systems), CarpetView (Light Conversion), and custom routines in OriginPro (OriginLab).
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