Hi Rizwan,

this might be useful to you.

http://pubs.acs.org/doi/abs/10.1021/ja8057327

Yes you can.

All the ways are described in review:

CurrentOrganic Chemistry 2011, 15(8), 1133-1150

Yes it is possible. Amine groups can be easily grafted on any carbon substrate.. for reference please see 

Nature Communications 4, Article number: 1920 doi:10.1038/ncomms2937

Nano Lett., 2008, 8 (6), pp 1679–1682

Journal of Materials Chemistry 22 (34), 17560-17567

It  maybe easily grafted because of OH.but you must   choose some kind of catalyst.