SUPPORTING INFORMATION
Soft Nanoparticles Assembled from Linear Poly(ethylene glycol) and
Linear Brush Poly(dimethylsiloxane) Diblock Copolymers
Andri Halim,1,2 Timothy Reid,1 Jing M. Ren,1 Qiang Fu,1,2 Paul A. Gurr,1,2 Anton
Blencowe,2, † Sandra E. Kentish,1 Greg G. Qiao 1,2
1
Cooperative Research Centre for Greenhouse Gas Technologies, Department of Chemical
and Biomolecular Engineering, University of Melbourne, VIC 3010, Australia
2
Polymer Science Group, Department of Chemical and Biomolecular Engineering,
University of Melbourne, VIC 3010, Australia
Current Address:
†
Mawson Institute, Division of Information Technology, Engineering and the Environment,
University of South Australia, SA 5095, Australia
Correspondence to: G. G. Qiao (E-mail: gregghq@unimelb.edu.au)
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Figure S1. 1H NMR spectra (d6-DMSO) of macroinitiator P15.
Figure S2.
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C NMR spectra (d6-DMSO) of bromo-functionalized 5 kDa MeOPEG
macroinitiator P15.
2
Figure S3. 1H NMR spectra (CDCl3) of 2-(methacryloyloxy)ethyl anthracene-9-carboxylate.
Figure S4. 13C NMR spectra (CDCl3) of 2-(methacryloyloxy)ethyl anthracene-9-carboxylate.
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a)
b)
Figure S5. 1H NMR spectra (d6-DMSO) of (a) bromo-functionalized 1 kDa MeOPEG
macroinitiator P11, and (b) bromo-functionalized 10 kDa MeOPEG macroinitiator P110.
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Figure S6. MALDI ToF mass spectra of (a) 1 kDa MeOPEG and (b) its bromofunctionalized derivative, P11, recorded in linear/positive mode using DCTB and NaTFA as
the matrix and cationization agent, respectively. The numbers on the mass spectra denote the
number of EO repeat units (n, 44 m/z).
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Figure S7. MALDI ToF mass spectra of (a) 10 kDa MeOPEG and (b) its bromofunctionalized derivative, P110, recorded in linear/positive mode using DCTB and NaTFA as
the matrix and cationization agent, respectively. The numbers on the mass spectra denote the
number of EO repeat units (n, 44 m/z).
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Figure S8. MALDI ToF mass spectra of PDMS-MA macromonomer recorded in
linear/positive mode using no matrix and KTFA as the cationization agent. Series a refers to
the PDMS-MA while series b refers to the unfunctionalized PDMS. Each peak in both series
is separated by 74 m/z which are indicative of PDMS repeat unit.
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Figure S9. (a, c, e) Intensity autocorrelation and (b, d, f) intensity-average hydrodynamic
diameter distributions of poly(ethylene glycol)/poly(dimethylsiloxane) diblock copolymers
P2 self-assemblies.
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Figure S10. (a, c, e) Intensity autocorrelation and (b, d, f) intensity-average hydrodynamic
diameter distributions of poly(ethylene glycol)/poly(dimethylsiloxane) copolymers P2 prior
to self-assembly.
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Figure S11. Ultraviolet-visible spectra of P2’s self-assemblies upon exposure to UV
radiation (365 nm) for 4 hours.
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Figure S12. (a, c, e) Intensity autocorrelation and (b, d, f) intensity-average hydrodynamic
diameter distributions of poly(ethylene glycol)/poly(dimethylsiloxane) copolymers P2 selfassemblies post photocross-linking.
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Table S1. Critical micelle concentration (CMC) of poly(ethylene
glycol)/poly(dimethylsiloxane) diblock copolymer self-assemblies.
Polymers
CMC [M]
10-7
P21/5
10-7
P21/8
10-6
P25/4
10-6
P25/7
10-6
P25/9
10-6
P210/9
10-6
P210/12
10-6
P210/15
Figure S13. (a, c, e) Intensity autocorrelation and (b, d, f) intensity-average hydrodynamic
diameter distributions of poly(ethylene glycol)/poly(dimethylsiloxane) copolymers P2 selfassemblies post photocross-linking upon dilution below their CMCs.
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Figure S14. Ultraviolet-visible spectra of various photocross-linked nanoparticles upon
exposure to UV radiation (254 nm) for 20 hours.
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Table S2. Extent of photocleavage of the anthracene groups over 20 hours.
Polymers
P21/5
P21/8
P25/4
P25/7
P25/9
P210/9
P210/12
P210/15
Extent of photocleavage (%)
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7
15
19
16
17
19
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Figure S15. (a) Intensity autocorrelation and (b) intensity-average hydrodynamic diameter
distributions of poly(ethylene glycol)/poly(dimethylsiloxane) copolymers P25/7 selfassemblies upon dilution with chloroform.
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