Solvent-modulated second harmonic generation in N -alkylated thiohydantoin derivatives: synthesis, characterization, and first-principle insights

= 8.8 ns for MAS3) further underscore the promise of these derivatives for optoelectronic applications. This work not only validates the solvent modulated EFISHG and EOPE capabilities of thiohydantoin-based systems but also provides a robust framework for designing advanced organic materials for photonics and telecommunications.