Influence of carbon chain length on the synthesis and yield of fatty amine-coated iron-platinum nanoparticles

Table 3 Comparison of SIPPs made with tetradecylamine and a 30-min reflux

Value	Description	Units	TDA-SIPP no. 1	TDA-SIPP no. 2
d	Diameter	nm	7.34 ± 1.22	7.86 ± 0.76
CV	Coefficient of variation	%	16.6	9.6
V _p	Particle volume	cm³	2.07 × 10⁻¹⁹	2.55 × 10⁻¹⁹
S	Surface area	cm²	1.69 × 10⁻¹²	1.94 × 10⁻¹²
C _p	Suspension concentration	mg/mL	4.29 ± 0.47	5.97 ± 0.14
C _Fe	Iron concentration	mg/mL	0.214 ± 0.00007	0.729 ± 0.004
C _Pt	Platinum concentration	mg/mL	0.583 ± 0.0003	2.503 ± 0.005
N ^a _Fe	Iron atoms in 1.0 mL	-	2.31 × 10¹⁸	7.87 × 10¹⁸
N _SIPP	Nanoparticles per mL	SIPP/mL	5.90 × 10¹⁴	1.83 × 10¹⁵
A _Fe	Atomic percent Fe	at.%	56.2	50.4
A _Pt	Atomic percent Pt	at.%	43.8	49.6
Fe/Pt	Fe/Pt stoichiometry	-	1.28	1.02
M ^P _FePt	Mass per particle	g	2.9 × 10⁻¹⁸	3.56 × 10⁻¹⁸
N ^a _FePt	Total Fe + Pt atoms per particle	-	6,964	8,551
N ^P _Fe	Iron atoms per particle	-	3913.8	4309.9
N ^P _Pt	Platinum atoms per particle	-	3050.3	4241.5