Carbonization mechanisms of polyimide: Methodology to analyze carbon materials with nitrogen, oxygen, pentagons, and heptagons

  title={Carbonization mechanisms of polyimide: Methodology to analyze carbon materials with nitrogen, oxygen, pentagons, and heptagons},
  author={Tomofumi Kato and Yasuhiro Yamada and Yasushi Nishikawa and Hiroki Ishikawa and Satoshi Sato},

Bottom-up synthesis of carbon materials with high pyridinic-nitrogen content from dibenzacridine isomers with zigzag and armchair edges

Nitrogen-doped carbon materials, especially pyridinic nitrogen, have attracted attention because of the high performance for various applications such as electrodes for fuel cells and other catalytic

Bottom-up synthesis of oxygen-containing carbon materials using a Lewis acid catalyst

Oxygen-containing carbon materials have been studied extensively because of their excellent dispersibility, absorptivity, separability, and supportability of catalysts. However, structural control by

Origins of peaks of graphitic and pyrrolic nitrogen in N1s X-ray photoelectron spectra of carbon materials: quaternary nitrogen, tertiary amine, or secondary amine?

X-ray photoelectron spectroscopy (XPS) is among the most powerful techniques to analyse structures of nitrogen-doped carbon materials. However, reported assignments of (1) graphitic nitrogen

Effects of molecular shapes, molecular weight, and types of edges on peak positions of C1s X-ray photoelectron spectra of graphene-related materials and model compounds

Nanocarbon materials such as graphene and graphene nanoribbons (GNRs) have been studied for various applications such as electrodes and catalysts. For precise analyses of nanocarbon materials,

Pentagons and Heptagons on Edges of Graphene Nanoflakes Analyzed by X-ray Photoelectron and Raman Spectroscopy.

X-ray photoelectron spectroscopy and Raman spectroscopic analyses used to analyze the spectral features of GNFs according to the position of pentagons and heptagons introduced onto their zigzag and armchair edges provided the groundwork for the analysis of graphene-related materials.

Influence of NIPS on the structure and gas separation performance of asymmetric carbon molecular sieve membranes

Asymmetric carbon molecular sieve (ACMS) membranes derived from PMDA-ODA polyimide were prepared via nonsolvent-induced phase separation (NIPS) and carbonization. The effects of NIPS parameters on

Pyrolysis of Porous Organic Polymers under a Chlorine Atmosphere to Produce Heteroatom-Doped Microporous Carbons

Three types of cross-linked porous organic polymers were carbonized under a chlorine atmosphere to obtain chars in the form of microporous heteroatom-doped carbons to elucidate the influence of pyrolysis and additional annealing conditions on the carbon materials’ porosity and chemical composition.



Carbonization in polyacrylonitrile (PAN) based carbon fibers studied by ReaxFF molecular dynamics simulations.

The carbonization mechanism in polyacrylonitrile (PAN) based carbon nanofibers is studied using ReaxFF molecular dynamics simulations and Elimination mechanisms for the gaseous molecules are found that are in agreement with previously proposed mechanisms; however, alternative mechanisms are also proposed.

Carbon materials with high pentagon density

Pentagons in carbon materials have attracted attentions because of the potential high chemical reactivity, band gap control, and electrochemical activity. However, it is challenging to prepare a

Bottom-up synthesis of highly soluble carbon materials

Oxygen-containing carbon materials such as graphene oxide have been studied intensively for a decade because of the high oxygen content, which is beneficial to disperse carbon materials in solutions

Atomistic Scale Analysis of the Carbonization Process for C/H/O/N-Based Polymers with the ReaxFF Reactive Force Field.

An improved force field was developed for C/H/O/N chemistry based on the density functional theory data with a particular focus on N2 formation kinetics and its interactions with polymer-associated radicals formed during the carbonization process.

Role of the in‐plane orientation of polyimide films in graphitization

Poly(amide acid) labeled with perylenetetracarboxydiimide (PEDI) was prepared from 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA), p-phenylenediamine (PDA), and diamino-PEDI. Poly(amide acid)