The electronic structures and NMR parameters of the (4, 4) armchair and (8, 0) zigzag models of boron phosphide nanotubes (BPNTs) and the effects of Ge and As atoms doped on two these models were investigated by density functional theory (DFT). The chemical shielding (CS) tensors at the sites of 11B and 31P nuclei were computed from the optimized structures and then the computed chemical shielding tensors were converted to isotropic chemical shielding (CSI) and anisotropic chemical shielding (CSA). Due to the electron donative nature of Ge and As atoms the change in NMR parameters at the sites near the doped atoms are more significant than other sites. The results show that the CSI values for most of B and P nuclei in the doped models increase from corresponsive initial values and the charge density electron at these sites are greater than other sites.
