IR spectroscopy 31P NMR spectroscopy 1 4-nonylphenol 1 Bader charge analysis 1 CPMD 1 DFT 1 History of engineering & technology 1 IINS 1 IR 1 Lewis acid-Lewis base interactions 1 Lithium salts 1 NMR 1 PMMA 1 QTAIM 1 Raman 1 Reaction mechanism 1 Research & information: general 1 activation energy 1 adenine 1 adsorption 1 aromaticity 1 azo dyes 1 benchmark 1 biodegradable polymer 1 carboxyl group 1 computation of low-frequency Raman spectra 1 condensed matter 1 confinement 1 conventional and non-conventional H-bonds 1 crazing 1