(a,b) HR-TEM images of (a) Py-1-SWNT and (b) Py-2-SWNT. Scale bar, 1 nm. (c,d) Model structures of (c) paired PP groups on the (9,4) SWNT model and (d) one PP and three phenyl groups on the (6,6)SWNT model optimized by DFT calculations at the RB97D/3-21G* level. (e,f) Corresponding image simulations of HR-TEM are shown in (e) and (f).
Tomokazu Umeyama et al
CC BY 4.0
<a rel="nofollow" class="external free" href="http://www.nature.com/ncomms/2015/150715/ncomms8732/abs/ncomms8732.html">http://www.nature.com/ncomms/2015/150715/ncomms8732/abs/ncomms8732.html</a>