Electron-emission properties of carbon nanotube micro-tips coated by amorphous carbon nitride films

RAFT synthesis of polyethylene glycol (PEG) and amino-functionalized amphiphilic copolymers for dispersing carbon nanofibers

“…Copolymers of St, BA, DMAEMA and PEGMA were successfully synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization. The molecular weight and PDI of the copolymers were determined by SEC and the structure by 1 H NMR. The PDIs of copolymers obtained were between 1.14 and 1.36.…”

“…CNFs have high mechanical strength, well particle erosion resistance and good electrical conductivity, making them ideal reinforcing bers in composites. [1][2][3][4][5] However, most CNFs can easily form aggregates when settled in solutions owing to strong van der Waals interactions between nanobers. The surface functionalization of CNFs is an essential step for manipulating these nanomaterials.…”

Structure and Field Emission Properties of CNx Powders Synthesized by a Polymerization Process

“…Besides, the optical band gap of carbon nitride was estimated to be as wide as diamond [3,4], which means carbon nitride might have negative electron affinity, and was suggested to possess a stable electron field emission property. Field emission research of carbon nitride has been tried by several groups [5][6][7][8][9][10][11][12][13], while extensive efforts have been devoted to deposit amorphous CNx film or CNx nanotube on the substrates. However, depositing CNx film or CNx nanotube usually needs rigid deposition conditions, or expensive and sophisticated instruments to control assistantly, is unsuitable to prepare field emission cathode (FEC) in large scale.…”