Guanidine cyclic diimides and their polymers. Issue 69 (30th July 2019)

• Record Type: Journal Article
• Authors: An, Taeyang; Kang, Byeongwoo; Kang, Sunyoung; Pac, Jinyoung; Youk, Jihea; Lin, Dian; Lee, Yan
• Is Part Of: Chemical communications. Volume 55:Issue 69(2019)
• Page Start: 10222
• Page End: 10225
• Publication Date: 2019-07-30
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc04522h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : We report the formation and degradation of a unique guanidine cyclic diimide (GCDI) structure under mild conditions. Furthermore, the GCDI-based polymers can be readily synthesized from guanidine and dianhydride monomers. Abstract : We report the formation and degradation of a unique guanidine cyclic diimide (GCDI) structure and GCDI-based polymers. The GCDI structure is readily formed under mild conditions. The X-ray crystal structure showed that the delocalized π-orbitals in the guanidine plane are significantly disrupted in the GCDI structure. Unlike amine-based imides, the GCDI structure readily degrades into the initial guanidine in protic solvents at ambient temperatures. Furthermore, poly(GCDI)s, a new category of polymers with the GCDI backbones, can be synthesized from guanidines and dianhydrides. Similar to the monomeric GCDIs, poly(GCDI)s are degraded in protic solvents unlike polyimides with high chemical stability.