Journal: iScience

Article Title: Unveiling electron transfer in a supramolecular aggregate for adaptive and autonomous photochromic response

doi: 10.1016/j.isci.2021.102956

Figure Lengend Snippet: Dynamic spectroscopic analysis and photochromic behavior of NDI in DMA solution (A) Dynamic UV/visible absorption spectra of NDI in DMA dilute solution (2 × 10 −4 M) upon irradiation using a 300 W xenon lamp for 3 min at 30-s intervals. Inset: the reversible photochromic behavior of color changes for the dilute solution. (B) Dynamic ESR spectra of NDI in DMA saturated solution (5.5 × 10 −3 M) upon irradiation using a 300-W xenon lamp for 50 s at 10-s intervals. Inset: ESR spectrum of the sample without light irradiation. (C)The photochromic behavior of NDI in DMA saturated solution (5.5 × 10 −3 M) upon light irradiation using a 300-W xenon lamp for 1 min.

Article Snippet: The UV-visible and near-IR absorption spectra of the NDI-doped polymeric films were recorded on a PerkinElmer Lambda-950 UV/Vis/NIR spectrophotometer.

Techniques: Irradiation

Journal: Journal of inorganic biochemistry

Article Title: A divergent mode of activation of a nitrosyl iron complex with unusual antiangiogenic activity

doi: 10.1016/j.jinorgbio.2020.111133

Figure Lengend Snippet: Spectral changes investigated by stopped-flow measurement during the reaction of trans-[Fe(cyclam)(NO)Cl]2+ (5 mM) with GSH (150 mM) (A) and the same reaction between of trans-[Fe(cyclam)(NO)Cl]2+ (300 μM) with GSH (9 mM) by UV–Vis (B) in 0.5 M phosphate buffer pH 7.4 solution at 37 °C and under aerobic conditions. Inset: kinetic curve monitored at 541 nm (first order equation fit, in A kobs = 6.31 s−1, R2 = 0.9936, in B kobs = 6,93 × 10−5, R2 = 0.9830).

Article Snippet: The absorption spectra in the UV–Vis range were obtained using the following spectrophotometers: Cary model 5000 UV/VIS–NIR (Varian/Agilent), Diode-Array Hewlett-Packard model 8453, Perkin-Elmer UV/Vis/NIR Spectrometer – Lambda 35, and Stopped-flow model SX 20 Applied Photophysics, where fast kinetics were obtained in the latter.

Techniques: