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Supporting Information
Hairy Polymer Nanofibers via Self-assembly of Block Copolymers
Jit Pal,a Sunita Sanwaria,a Rajiv Srivastava,a Bhanu Nandan,*a
Andriy Horechyy,b Manfred Stamm,b,c Hsin-Lung Chend
a Department of Textile Technology, Indian Institute of
Technology Delhi, Hauz Khas, New Delhi 110016, India b Leibniz
Institute of Polymer Research Dresden, Hohe strasse 6, Dresden
01069, Germany c Technische Universität Dresden, Physical Chemistry
of Polymer Materials, Dresden 01062, Germany d Department of
Chemical Engineering, National Tsing-Hua University, Hsinchu 30013,
Taiwan
* Corresponding author: E-Mail: [email protected]
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Figure 1S: SAXS plot of neat PS-b-P4VP block copolymer obtained
at room temperature.
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Figure 2S: SEM image of polymer nanofibres immobilized on the
silicon wafer obtained by drop casting.
1 µm
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0 100 200 300 4000
20
40
60
80
X[nm]
Z[nm
]
Figure 3S: AFM topography image of spin-coated polymer
nanofibres prepared from PS-b-P4VP on the silicon wafer a) Height
image and (b) corresponding cross-sectional profile of the
nanofibre across the line marked on (a).
(a)
(b)
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(a)
(b)
100 nm
100 nm
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Figure 4S: SEM images of gold/polymer hybrid nanofibres prepared
using ex-situ approach and obtained after different exposure time
of the nanofibres to the Au nanoparticle dispersion a) 1 min; b) 10
min; c) 2 hours
(c)
100 nm
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Figure 5S: EDX spectra of gold-polymer hybrid nanorods obtained
from the sample where gold salt was first coordinated with the P4VP
chains in the solution before depositing the polymer nanofibres on
the substrate. The EDX spectra clearly show the presence of Au on
the nanofibres.
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Figure 6S: SEM image of gold/polymer hybrid nanofibres obtained
using the ex-situ approach where the polymer nanofibres were
cross-linked with UV before exposing it to Au nanoparticle
dispersion.
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Figure 7S: Size-distribution histogram of gold nanoparticles
prepared using the in-situ approach on the P4VP hairy shell of the
PS nanofibres (corresponding to TEM image shown in Figure 5 of the
manuscript).
0 4 8 12 16 20 24 280
10
20
30
40
Freq
uenc
y co
unts
(%)
Particle size (nm)
= 10.6 ± 2.8 nm
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Figure 8S: AFM topography image of spin-coated polymer
nanofibres on the silicon wafer. The sample was prepared from the
methanol dispersion of PS-b-P4VP copolymer aged for more than four
weeks. The image clearly shows the presence of spherical structures
apart from nanofibres which suggest that the nanofibres formed
spherical micelles when kept in methanol for long time.
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