Carbon-rich materials with three-dimensional ordering at the angstrom level

Abstract

We discuss the preparation and application of various carbon-rich materials with three-dimensional ordering at the angstrom level.

Iron porphyrin-derived ordered carbonaceous frameworks

“…These two problems could be solved by appropriate molecular design. Unlike the conventional carbonaceous catalysts, the OCF synthesis allows a precise molecular design based on the techniques of organic chemistry, and there is plenty of room for improvement [26]. For instance, introduction of a larger number of ethynyl groups to the porphyrin framework may be effective to form highly developed three-dimensional crosslinking and its translation into highly porous OCFs.…”

“…Apart from the pyrolysis of organometallic complexes, the synthesis of nanocarbon materials with well-defined chemical structures have been achieved in C60 [19], nanocarbon molecules [20], single-walled carbon nanotubes [21], nano-graphenes [22,23], and three-dimensional graphenes [24,25]. Nevertheless, it has been difficult to achieve the precise and well-dispersed incorporation of metal centers to three-dimensionally ordered carbonaceous frameworks for catalysis [26]. In this regard, we have reported a new bottom-up method to prepare metal-incorporated ordered carbonaceous frameworks (OCFs) from Ni-based cyclic porphyrin dimer (NiP-dimer, Fig.…”

Hierarchical self-assembly of discrete bis-[2]pseudorotaxane metallacycle with bis-pillar[5]arene via host–guest interactions and their redox-responsive behaviors

“…The supramolecular chemistry of pillar[n]arenes has developed immensely over the past ten years on account of their excellent inclusion properties and many intriguing applications in the constructions of molecular switches/machines, metal-organic frameworks, pH-responsive vesicles, as well as articial transmembrane channels. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53] Pillararenes are a new family of macrocyclic host molecules that possess symmetrical and columnar geometries with rigid and p-rich cavities. Compared with other macrocyclic hosts, the most peculiar host-guest properties of pillararenes are their strong affinities towards neutral guests by CH/p hydrogen bonds in organic media.…”

Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments

“…One promising class of candidates for such catalysts is carbon-based materials synthesized by the pyrolysis of organic substances containing nitrogen. [13][14][15][16][17][18][19][20] In this method, metals such as Co and Fe are needed during the pyrolysis. The aggregated metal nanoparticles catalyze graphitization.…”