Raman Spectroscopy and Structural Analysis of Polyphenylene Sulfide (PPS)

Abstract

Polyphenylene sulfide (PPS) emerges as a novel and promising material in the field of optical materials, owing to its distinctive crystal structure. This structure, characterized by phenyl rings arranged at angles ranging from +45° to −45° along the [100] plane, with two chains in the orthorhombic unit cell, sets PPS apart. Our research delves into the unique sensitivity of the Raman line at 1079.83 cm⁻¹ to the alignment of polymer chains within PPS. This sensitivity serves as a powerful tool, enabling us to unravel the structural complexities of PPS and illuminate the dynamics governing its optical behavior. Our study adopts a synergistic approach, combining the precision of Raman spectroscopy with the broader perspective offered by nonlinear optical (NLO) evaluations. This integration aims to deepen our understanding of PPS, behavior, particularly in relation to its optical properties. Furthermore, it seeks to underscore the untapped potential of PPS in the field of nonlinear optics, thereby paving the way for its application in advanced optical technologies.