Heidari Alireza, Esposito Jennifer, Caissutti Angela, Tetrodotoxin (TTX) Time–Resolved Absorption and Resonance FT–IR and Raman Biospectroscopy and Density Functional Theory (DFT) Investigation of Vibronic–Mode Coupling Structure in Vibrational Spectra Analysis, Journal of New Developments in Chemistry, Volume 2, Issue 3, 2019, Pages 26-48, ISSN 2377-2549, https://doi.org/10.14302/issn.2377-2549.jndc-19-2765. (https://openaccesspub.orgjndc/article/1109) Keywords: Vibronic Structure; Vibrational Spectra Analysis; Density Functional Theory (DFT); Tetrodotoxin (TTX); Non–Focal Functions of Becke; Correlation Functions of Lee–Yang–Parr; Time–Resolved Absorption and Resonance; FT–IR and Raman Biospectroscopy.