This brief review focuses on the synthesis and diverse applications of poly(norbornene-dicarboximides) (poly-
NDIs), shedding light on their versatile properties. and provides an overview of the simplicity of synthesizing norbornene
derived-polymers via ring-opening metathesis polymerization (ROMP). The ROMP technique is described, elucidating
the initiation, propagation, and termination steps with Grubbs’ catalysts, which play pivotal roles. Synthetic routes to
poly-NDIs were clarified, emphasizing their potential for customization through substituent modifications. In addition, it
explores numerous uses of poly-NDIs, including gas separation membranes, drug delivery systems, energy storage
devices, capacitors, and electro-optic devices. This emphasizes their excellent gas permeability, adjustable adsorption
qualities, high dielectric constants, thermal stability, and ease of production. Furthermore, poly-NDIs with aggregationinduced
emission (AIE) features have been recognized for their potential as chemical sensors, enabling sensitivity and
selectivity in detecting various analytes.