(Supplementary Fig.2), suggesting that both dithienylethene units of compound 1 participate in the chemical process with different efficiency in these solvents except chloroform. To exclude the influence of residue acid in chloroform on the corresponding properties of compound 1, we first determine ...
nanosheets with slight curls (Fig.S33). Such nanotubes can dramatically benefit photogenerated carriers’ migration and mass transfer in photocatalysis. Moreover, the nanotube superstructure could benefit the CO2absorption ability (Fig.S34). According to reported work, distinct nanotubes may originate fro...
X-ray photoelectron spectroscopy (XPS) has suitably been developed to determine hybridization states of carbon and carbon atoms bound to non-carbon atoms to form functional groups [112,113]. As seen in Fig. 7, the de-convoluted C 1s signal of the XP spectrum of a mesoporous carbon can show...
As demonstrated in previous work [5], the scattering trials can be conducted in a vertical scan mode with a slit gap of 200 μm (or 0.2 mm) to determine the through-thickness residual strain profile of the coating-substrate system. To achieve a high-resolution profile of the through thickn...
Nuclear magnetic resonance (NMR) spectra and the high-resolution mass spectrum (MALDI-TOF) of the intermediates and Y6 are shown in Figures S1–S12. In order to better understand the 3D structure of Y6, density functional theory (DFT) calculations at the ωB97X-D/6-31+G (d,p) level ...
This procedure has been extended to include lower-energy excitation radiation, such as Cu, where the resolution of an energy-dispersion system requires that the total scattered intensity be used to determine the sample mass. Trace element weight-fraction concentrations are determined from this scheme ...
140 La is adsorbed in the column while 140 Ba is eluted with 6M LiNO 3 . After complete removal of 140 Ba, 140 La is eluted with 0.002M HNO 3 solution. The purity of 140 La is established by both its half-life and γ-spectrum....
The Use of Electron Probe MicroAnalysis to Determine the Thickness of Thin Films in Materials Science Electron Probe MicroAnalysis (EPMA) was born around 1950 when Raymond Castaing, a French graduate student working under the supervision of Andre Guinier, built his first microanalyser (Castaing & ...
Among other things, such multiphase processes help to determine the oxidative power of the atmosphere by acting as sinks for nitrogen oxides3,4. Of particular long-standing interest is the reactive uptake of N2O5 in aqueous aerosol, which is estimated to account for 15–50% of the loss of ...
Raman spectroscopy, ultraviolet-visible spectroscopy (UV-vis), and X-ray photoelectron spectroscopy (XPS) were further conducted to shed lights into potential molecular-carbon interactions in the Cu(Tpy)2-KB hybrid. As shown in Fig.1b, the Raman spectrum of Cu(Tpy)2shows some vibrational featur...