Editing Boron nitride (section)

===Boron nitride nanotubes===
{{Main|Boron nitride nanotube}} Boron nitride tubules were first made in 1989 by Shore and Dolan This work was patented in 1989 and published in 1989 thesis (Dolan) and then 1993 Science. The 1989 work was also the first preparation of amorphous BN by B-trichloroborazine and cesium metal.

Boron nitride nanotubes were predicted in 1994<ref>{{cite journal | doi = 10.1103/PhysRevB.49.5081 | pmid = 10011453 | title = Theory of Graphitic Boron Nitride Nanotubes | year = 1994 | author = Rubio, A. | journal = Physical Review B | volume = 49 | issue = 7 | pages = 5081–5084 |bibcode = 1994PhRvB..49.5081R | url = https://zenodo.org/record/1233727 |display-authors=etal}}</ref> and experimentally discovered in 1995.<ref name="N.G. Chopra, R.J. Luyken 1995">{{cite journal | doi = 10.1126/science.269.5226.966 | title = Boron Nitride Nanotubes | year = 1995 | author = Chopra, N. G. | journal = Science | volume = 269 | pages = 966–7 | pmid = 17807732 | issue = 5226 |bibcode = 1995Sci...269..966C | s2cid = 28988094 |display-authors=etal}}</ref> They can be imagined as a rolled up sheet of h-boron nitride. Structurally, it is a close analog of the [[carbon nanotube]], namely a long cylinder with diameter of several to hundred nanometers and length of many micrometers, except carbon atoms are alternately substituted by nitrogen and boron atoms. However, the properties of BN nanotubes are very different: whereas carbon nanotubes can be metallic or semiconducting depending on the rolling direction and radius, a BN nanotube is an electrical insulator with a bandgap of ~5.5 eV, basically independent of tube chirality and morphology.<ref>{{cite journal | doi = 10.1209/0295-5075/28/5/007 | title = Stability and Band Gap Constancy of Boron Nitride Nanotubes | year = 1994 | author = Blase, X. | s2cid = 120010610 | journal = Europhysics Letters | volume = 28 | page = 335 | issue = 5 |bibcode = 1994EL.....28..335B |display-authors=etal}}</ref> In addition, a layered BN structure is much more thermally and chemically stable than a graphitic carbon structure.<ref>{{cite journal | url = http://www.glue.umd.edu/~cumings/PDF%20Publications/15.APL81han.pdf | doi = 10.1063/1.1498494 | title = Transformation of B<sub>x</sub>C<sub>y</sub>N<sub>z</sub> Nanotubes to Pure BN Nanotubes | year = 2002 | author = Han, Wei-Qiang | journal = Applied Physics Letters | volume = 81 | page = 1110 | issue = 6 |bibcode = 2002ApPhL..81.1110H |display-authors=etal}}</ref><ref name="golberg">{{cite journal | title = Boron Nitride Nanotubes | doi = 10.1002/adma.200700179 | journal = Advanced Materials | volume = 19 | year = 2007 | page = 2413 | issue = 18 | last1 = Golberg | first1 = D. | last2 = Bando | first2 = Y. | last3 = Tang | first3 = C. C. | last4 = Zhi | first4 = C. Y. | bibcode = 2007AdM....19.2413G | s2cid = 221149452}}</ref>