Properties Carbon nanobud

1 properties

1.1 electrical properties
1.2 magnetic properties
1.3 structural properties

properties

carbon nanobuds (cnbs) have properties of nanotubes such one-dimensional electrical conductivity, flexibility , adaptability manufacture while having chemical properties of fullerenes. examples of these properties include engaging in cycloaddition reactions , can form chemical bonds capable of attaching other molecules complex structures. cnbs have higher chemical activity single walled carbon nanotubes (swcnts).

electrical properties

this new structure has been shown have electronic properties differ of fullerenes , carbon nanotubes (cnts). cnbs exhibit lower field thresholds , higher current densities , electric field emission swcnts. chemical bonds between nanotube s wall , fullerenes on surface can lead charge transfer between surfaces. presence of fullerenes in cnbs lead smaller bundle formation , larger chemical reactivity. cnbs can engage in cycloaddiiton reactions , form chemical bonds capable of attaching molecules complex structures. can explained greater availability of cnb surface reactants presence of π-conjugated structures, , having 5-atom rings excess pirimidization energy. formation energy indicated preparation of cnbs endothermic, meaning not favorable create.

all cnbs conducting, regardless of whether single walled cnt metallic or semiconducting base. band gap of carbon nanobuds not constant, can change through size of fullerene group. attachment of c60 added armchair orientation of swcnt opens band gap. on other hand, adding semiconducting swcnt introduce impurity states band gap, reduce band gap. band gap of cnbs can modified changing density of carbons of c60 attached sidewall of swcnt.

magnetic properties

geometrical factors integral study magnetic properties of nanobuds. there 2 structures of cnbs ferromagnetic in ground state, , 2 nonmagnetic. attached c60 molecule on surface of cnts gives more space between nanotubes , adhesion between single walled cnts can weakened prevent formation of tight bundles of cnts. carbon nanobuds can used molecular support prevent slipping of matrix in composite materials , increase mechanical strength of them.

structural properties

the stability of cnbs dependent on type of carbon-carbon bond dissociated in cycloaddition reaction. has been shown carbon atoms of swcnt near fullerene c60 molecule pulled outward original wall surface due covalent bonding cycloaddition reaction between fullerene , nanotube; in addition, bonding transformed spto sp hybridization. analysis using raman scattering spectroscopy shows cnb sample had stronger chemical modification compared cnts. indicates there carbon sp hybridization occurs after chemical addition creation of cnbs.