104902-04-7

Basic information

• Product Name: 9,9-bis[4-(1,5-naphthylimido)phenyl]fluorene
• Synonyms: 9,9-bis[4-(1,5-naphthylimido)phenyl]fluorene
• CAS NO: 104902-04-7
• Molecular Weight: 708.772
• Mol File: 104902-04-7.mol

Chemical Properties

• CAS DataBase Reference: 9,9-bis[4-(1,5-naphthylimido)phenyl]fluorene(CAS DataBase Reference)
• NIST Chemistry Reference: 9,9-bis[4-(1,5-naphthylimido)phenyl]fluorene(104902-04-7)
• EPA Substance Registry System: 9,9-bis[4-(1,5-naphthylimido)phenyl]fluorene(104902-04-7)

Safety Data

• Hazardous Substances Data: 104902-04-7(Hazardous Substances Data)

Upstream product

• 81-84-5 1,8-Naphthalic anhydride 
• 15499-84-0 9,9-bis(4-aminophenyl)fluorene 

Relevant articles and documents

A facile approach for the preparation of cross-linked sulfonated polyimide membranes for fuel cell application

A facile approach has been successfully developed for the preparation of a series of cross-linked sulfonated polyimide (SPI) membranes via the condensation reaction between the sulfonic acid groups and the activated hydrogen atoms of SPIs in the presence of phosphorous pentoxide: methanesulfonic acid in the ratio of 1: 10 by weight (PPMA, method 1) or phosphorous pentoxide only (method 2). The resulting sulfonyl linkages are very stable and the cross-linked SPI membranes showed greatly improved water stability in comparison with the uncross-linked ones while high proton conductivity was maintained. The Royal Society of Chemistry.