The preparation of a series of mesoporous polymers containing nitrogen-based functional groups and nitrogen-doped mesoporous carbons derived from the same precursor system through soft templating remains challenging, because most nitrogen sources are transformed at an elevated temperature or because the nitrogen-doped carbon matrix decomposes upon calcination. Herein we demonstrate the successful preparation of well-ordered nanostructured polyimides and nitrogen-doped mesoporous carbons with high regularity, tunable morphology, and high surface area, by using highly stable oligoimides and/or polyimides as the nitrogen source. Poly(amic acid)s, the precursors of polyimides, undergo a co-self-assembly process with amphiphilic block copolymer template and transform into polyimides under heating. Upon calcination at 350�C the template is removed without damaging the imide linkage, leading to a highly ordered polymer network with intrinsic imide functionality. Further carbonization at 600 �C allows the formation of nitrogen-doped mesoporous carbon. This newly developed system, which exhibits a high degree of flexibility, allows precise morphological control of 1-dimensional lamellar, 2-dimensional hexagonal and 3-dimensional cubic mesostructures on the basis of adjustments of each component in the system . This homologous series of well-ordered nanostructured polyimides and nitrogen-doped mesoporous carbons have potential applications in the fields of advanced materials.

Well-ordered nanostructured polyimide films and nitrogen-doped mesoporous carbons by a soft-template approach

247th National Meeting (2014)

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