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

Figure 5

(a) Preparation of OH-PI and t-Boc-PI resins, (b) FT-IR spectra of hydroxylated PI (OH-PI), t-Boc protected PI (t-Boc PI), and 300°C thermally cured PI (TC-PI), (c) TGA curves of p-ca pspi with different protection ratios [57].

(a)

(b)

(c)