Advancements in Synthesis Strategies and Optoelectronic Applications of Bio-Based Photosensitive Polyimides

Figure 8

(a) Citric acid synthesis of octahydropentanediol (OPD), (b) OAC and OOD synthesis routes, (c) biomass, oac pi, and ood pi synthesis routes [74].

(a)

(b)

(c)