Naphthalenetetracarboxylic dianhydride → Naphthalene

Participants

Reaction Conditions

Reaction Steps

To a solution of 15.82 g (100 mmol) of 2,3-diamino naphthalene in 100 mL of NMP was added 3.4 g (50 mmol) of 1,4,5,8-naphthalenetetracarboxylic dianhydride (NDA), and the formulation was mixed on a roller mill for 16 hours to form the 2:1 amic adduct. Ten grams of this solution was added to 75 g of a 16% solution of polyamic ethyl ester (PAETE). The NMP solution was spin coated on a quartz substrate to a thickness of 2 μm and heated at 350° C. for 20 min. The resulting film exhibited absorbance of 0.68 at 405 nm and 0.35 at 436 nm; thermogravimetric analysis (TGA) indicated a weight loss of 0.18% when heated from 350° to 450° over a period of 100 minutes.

Provenance & Evidence