Besides thermodynamic information, vibration can identify modes of a molecule by comparison of the spectroscopy and parameterize force field. By the application of group theory with the state of projection operators, a systematic method for getting the vibration model of molecule the zigzag single-walled Boron nitride nanotube (BNNT) with (8, 0) structure was proposed. The combination and their normalization coefficients of (8, 0) nanotube in C6V point group was calculated, and the effect of dielectric constants on the mechanism of these vibrations in nanotubes was studied. Normal mode analysis in chemistry was originally developed for describing the vibrational spectra of molecules, even though the interpretation is often in terms analysis is not very large. We found that in the high dielectric the frequency of vibration has alternative behavior, but by decreasing the dielectric this behavior changed to stable situation of geometry.
27 May 2014 in Monatshefte für Chemie - Chemical Monthly
A computational study based on density functional theory calculations was performed to investigate the potential possibility of using Zn12O12 fullerene-like cage as an electronic sensor for SO2 detection. For adsorption of SO2 on the Zn12O12 nanocage, three stable configurations were identified. The energy gap of Zn12O12 nanocage is very sensitive to the presence of SO2 molecule. The energy gap decreases from 4.19 eV in the free nanocage to 1.88 eV in the SO2-adsorbed form. This phenomenon increases the electrical conductivity of the nanocage. Considerable changes in the highest occupied molecular orbital/lowest unoccupied molecular orbital energy gap, short recovery time, high sensitivity, high electrical conductivity and also energetic favourability of the Zn12O12 nanocage suggest that Zn12O12 may be a potential sensor for SO2 detection.