This is a collection of data, input and output files for the publication: "Quasiparticle Effects and Strong Excitonic Features in Exfoliable 1D Semiconducting Materials", ACS Nano 2026, 20, 3, 2664–2677, DOI: https://doi.org/10.1021/acsnano.5c14061 If you use any part of the data contained in this Archive, please cite the corresponding publication. The folder contains the following sub-folders: - IR: data used to calculate the IR spectra by "Quantum ESPRESSO" - Phonons: data used to calculate the phonon dispersions by "Quantum ESPRESSO" - volume: 'scf' input and output files to calculate the quantum volume by "Quantum ENVIRON" - GW: band structures (with and without spin-orbit coupling) obtained using "Quantum ESPRESSO" and self-consistent GW quasiparticle corrections and BSE absorption spectra obtained with "YAMBO" The results are organized inside subfolders, one for each of the four materials studied: S3 Te3 As2Se3 Bi2Te3, and named correspondingly.