Langmuir-Blodgett (LB) films have emerged as a unique platform for studying molecular aggregation and its response to external factors. J-aggregates, a distinctive class of molecular assemblies with remarkable optical and electronic properties, have garnered considerable attention for their potential applications. This research paper delves into the intricate interplay between pH and J-aggregates within the restricted geometry of LB films. By systematically investigating how pH influences J-aggregate formation and behavior, this work sheds light on the fundamental principles governing molecular self-assembly, while offering insights into the design of novel functional materials.