A study of thermal stability, vibrational spectroscopy, electric response and linear and nonlinear optical properties of pure PVP polymer for solar cell and NLO devices

Ag‐Co3O4‐CoOOH‐Nanowires Tandem Catalyst for Efficient Electrocatalytic Conversion of Nitrate to Ammonia at Low Overpotential via Triple Reactions

“…The dominant bands located at 692, 749, 832, 943,1062, 1142, and 1267 cm −1 are ascribed to the N─C═O bend vibration, the symmetric stretch vibration of heterocyclic C─N─C, the in-plane pyrrolidinone ring breathing, C─C in-plane bending, the stretch vibration of C─N, the weak ring CH 2 twist, and the in-plane C─H of PVP, respectively. [73][74][75] The distinct bands of PVP are derived from the absorption of the introduced PVP onto the [100] facet of Ag NWs during the synthesis process. [76] The reason for the attenuation of Raman peaks is that the PVP ligand will desorption from Ag NWs surface at a more negative potential.…”

Transformation of SBUs and Synergy of MOF Host–Guest in Single Crystalline State: Ingenious Strategies for Modulating Third‐Order NLO Signals

“…The UV/vis diffuse‐reflectance spectrum shows that the absorption of pure PVP in the range of 200–350 nm is due to electron transitions of unsaturated bonds, while there is almost no absorption in the long wavelength range of 400–800 nm, indicating that PVP has good optical transparency. [ 28 ] Heavy doping affects the transmittance of laser light (suggested to maintain a transmittance value of 0.44). Therefore, by comparing the membranes with different doping levels, the membranes with 2% doping (mass fraction) were selected in this study as having an overall optical transmittance of around 0.6–0.8.…”