A new supramolecular sulfonated polyimide for use in proton exchange membranes for fuel cells.
Uracil-terminated telechelic sulfonated polyimides (SPI-U) were transformed into noncovalent network membranes through biocomplementary hydrogen bonding recognition in the presence of an adenine-based crosslinking agent. SPI-U membrane exhibited dramatically improved methanol permeability, oxidative stability, proton conductivity, and selectivity relative to those of the standard SPI.
Ye
Yun-Sheng
YS
Institute of Applied Chemistry, National Chiao-Tung University, Hsin-Chu, Taiwan.
Huang
Yao-Jheng
YJ
Cheng
Chih-Chia
CC
Chang
Feng-Chih
FC