Electronic Supplementary Material (ESI) for Dalton Transactions
This journal is © The Royal Society of Chemistry 2013
Magnetism and spin dynamics of novel encapsulated iron oxide
superparamagnetic nanoparticles
Paolo Arosio,a Giovanni Baldi,b Federica Chiellini,c Maurizio Corti,d Alberto Dessy,c Pietro
Galinetto,d Matteo Gazzarri,c Marco Simone Grandi,d Claudia Innocenti,e Alessandro Lascialfari,*a,d
, Giada Lorenzi,b Francesco Orsini,a Anna Maria Piras,c Costanza Ravaglib and Claudio
Sangregorioe,f
a
Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, and Consorzio INSTM, Milano Unit, Italy; E-mail:
[email protected]
b
CERICOL, Colorobbia, via Pietramarina 123, 50053 Sovigliana – Vinci, Firenze – Italy
c
BIOlab, Laboratorio di Materiali Polimerici Bioattivi per Applicazioni Biomediche ed Ambientali, Dipartimento di Chimica e Chimica Industriale,
Università di Pisa, UdR INSTM, Italy
d
Università degli Studi di Pavia, Dipartimento di Fisica, I-27100, Pavia, and Consorzio INSTM, Pavia Unit, Italy
e
Dipartimento di Chimica “Ugo Shiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), and INSTM,
Research Unit of Florence – Italy
100
25
@2.5K
@310K
Hprobe = 50 Oe
20
M (emu/gr)
50
M(emu/gr)
15
10
0
80
40
0
-50
5
-40
-80
-0.16
-0.08
0.00
0.08
0.16
-100
0
0
50
100
150
T (K)
200
250
300
-6
-4
-2
0
2
H (T)
Fig SI1. ZFC/FC magnetization curves (left panel) and magnetizations (right panel) curves collected at high (310K) and low
temperature (2.5K) for Endorem. In the inset of the right panel, low field details of the hysteresis loop are shown.
4
6
Electronic Supplementary Material (ESI) for Dalton Transactions
This journal is © The Royal Society of Chemistry 2013
80
M (emu/gr)
60
40
20
0
0
10000
20000
30000
40000
50000
60000
H (Oe)
Fig SI2. Magnetization curves at room temperature (300K) for sample VP-MAG-raw (squares), sample VP-MAG-pure (triangles)
and uncoated nanoparticles dispersed in a DEG solution (continuous line).
Electronic Supplementary Material (ESI) for Dalton Transactions
This journal is © The Royal Society of Chemistry 2013
Fig SI3. Longitudinal, r1, relaxivity for encapsulated magnetite samples compared to a commercial CA. The arrows indicate the
frequencies of the most commonly used MRI clinical Imagers.