A theoretical investigation reveals that pyrazylene-doped grephene oxide nanosheets have remarkable stability and...

The group of organic compounds known as pyrazylene is incredibly versatile, especially in nonlinear optical (NLO) materials, whose special qualities have significant uses. Using graphene oxide as a central core/π-spacer between the donor and acceptor, we have systematically designed Graphene Oxide-Pyrazylene complexes, known as GO-PA1 to GO-PA5. Density functional theory (DFT) technique B3LYP/6-31G(d,P) is used to optimize purposed systems, and to verify the properties of NLOs materials. In the solvent phase, GO-Pa5 exhibits a maximum absorption at 753.50 nm and a minimum energy gap of 2.18 eV. Different fragments contribute differently to the creation of HOMO and LUMO orbitals, which leads to effective intramolecular charge transfer (ICT), according to the (DOS) analysis. Our findings clarify the design and development of innovative NLO materials with GO-PA derivatives. For GO-PA1, their vertical IP (VIP) values were 5.02 eV, while for GO-PA5, they were 4.32 eV. The chromosphere GO-PA5 exhibits a solvent phase with an absorption peak (λ_max) of 753.50 nm, oscillator strength (f) of 0.0181, and excitation energy (E) of 1.6519 eV. The chromosphere GO-PA3 exhibits gas phase properties, with an E value of 1.049 eV, f of 0.0008, and λ_max of 751.42 nm. Our research shed light on the creation of novel GO-PA-containing NLO materials and their design.