Question!

not directly........
best you can do, is this.
if u or friend are clan leader or lt.... and you are both in the same clan, u can donate the zp into the clan bank. then your friend or you can use it to by your friend a clan item from the mall....... not sure what you can get,, i know you can buy 40k gp for 4900 zp... so if he can chip in the extra 100 zp that is the best bet.

AGAIN this only works if you are in a clan together, and you will be limited on what can be bought.