Nitrogen-Doped Carbon Nanotubes Synthesised by Pyrolysis of (4-{[(pyridine-4-yl)methylidene]amino}phenyl)ferrocene

Table 1

Products obtained by pyrolysis of (4-{[(pyridine-4-yl)methylidene]amino}phenyl)ferrocene (2.5 wt.%) in a solution of toluene or acetonitrile.

Temperature (°C)	Carbon source	Yield (mg)	Composition of the product*	Avg. ID (nm)	Avg. OD (nm)
800	Toluene	176	40% T; 60% Ac	10.19	60.19
	Acetonitrile	100	60% T; 40% Ac	31.309	50.64
850	Toluene	300	50% T; 45% CS; 5% Ac	15.62	68.31
	Acetonitrile	178	85% T; 15% Ac	54.248	60.709
900	Toluene	570	2% T; 98% CS	25.36	73.76
	Acetonitrile	240	20% T; 80% CS	65.69	76.47

∗The composition of the products is based on acceptable counting procedures using electron micrographs; at least 50 images were used in each case and over 200 SCNMs were counted per sample.
T: carbon nanotubes; Ac: amorphous carbon; CS: carbon spheres; Avg. ID: average inner diameter; Avg. OD: average outer diameter.