Supplementary data
Template synthesis of braided gold nanowires with gemini surfactant-HAuCl4
aggregates
Wentao Wang, Yuchun Han, Mingyuan Gao* and Yilin Wang*
Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences,
Institute of Chemistry(BNLMS), Chinese Academy of Sciences, Beijing 100190, People’s Republic of China.
*To whom the correspondence should be addressed. E-mail: yilinwang@iccas.ac.cn, gaomy@iccas.ac.cn.
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Fig. S1. TEM and HRTEM images of the gold nanowires at R = 2:1 and (a, b) the gold broad braided
nanowires at R = 1:2 (d, e) from reduction of 0.2 mM HAuCl4. The XRD patterns of the nanowires (c) and
broad braided nanowires (f). Insets show the related SAED patterns.
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Fig. S2. Typical CryoTEM image shows the C12C6C12Br2-HAuCl4 aggregates obtained at R = 2:1 was in-situ
reduced by the electron beam of a Tecnai 20 TEM even at the low-dose mode (about 2000 e/nm2).
Fig. S3. The 1HNMR spectra (in D2O) of the reduction product p-phenylenediamine. The  6.708 and  4.79
can be ascribed to the aromatic hydrogen atoms and HDO signal from the solvent, respectively. The hydrogen
atom of –NH2 groups cannot detect in D2O due to the active hydrogen atoms are easy to exchange with the
deuterium atoms.
3
The calculation of Turnover Number (TON) and Turnover Frequency (TOF) (Jia et al. 2012):
TON and TOF values were calculated according to the following equations:
TON = M substrate / M catalyst
TOF = TON / time
The approximate number of the nanoparticles in the catalytic system was about 4.22×108 for nanowire,
1.65×108 for braided nanowire, 1.32×108 for broad braided nanowire, estimating by a literature method
(Kundu et al. 2009). M catalyst of the nanowires, braided nanowires and broad braided nanowires was calculated
to be
7.01×10-16, 2.74×10-16 and 2.18×10-16, using Avogadro's constant of 6.022×1023. And the approximate
numbers of 4-nitroaniline are 3.0×10-7 mol.
The TON values were about 4.28×108 mol/mol, 1.09×109 mol/mol, and 1.38×109 mol/mol for the nanowires,
braided nanowires, and broad braided nanowires, respectively. The TOF values were 2.36×106 mol/(mol·min),
6.98×106 mol/(mol·min), and 4.58×107 mol/(mol·min) for the nanowires, braided nanowires, and broad
braided nanowires, respectively.
Reference
Jia H, Gao X, Chen Z, Liu G, Zhang X, Yan H, Zhou H, Zheng L (2012) The high yield synthesis and
characterization of gold nanoparticles with superior stability and their catalytic activity. CrystEngComm
14: 7600–7606. doi: 10.1039/C2CE25840D
Kundu S, Lau S, Liang H (2009) Shape-controlled catalysis by cetyltrimethylammonium bromide terminated
gold
nanospheres,
nanorods,
and
nanoprisms.
doi: 10.1021/jp811331z
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J
Phys
Chem
C
113(13):
5150–5156.