Deposition of Nanosized Amino Acid Functionalized Bismuth Oxido Clusters on Gold Surfaces. / Morgenstern, Annika; Thomas, Rico; Sharma, Apoorva et al.
In: Nanomaterials, Vol. 12, No. 11, 1815, 26.05.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Deposition of Nanosized Amino Acid Functionalized Bismuth Oxido Clusters on Gold Surfaces
AU - Morgenstern, Annika
AU - Thomas, Rico
AU - Sharma, Apoorva
AU - Weber, Marcus
AU - Selyshchev, Oleksandr
AU - Milekhin, Ilya
AU - Dentel, Doreen
AU - Gemming, Sibylle
AU - Tegenkamp, Christoph
AU - Zahn, Dietrich R T
AU - Mehring, Michael
AU - Salvan, Georgeta
N1 - Funding: A.S. and G.S. would like to acknowledge financial support from DFG project no. 282193534. The publication of this article was funded by Chemnitz University of Technology and by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—491193532. SG acknowledges support by the Deutsche Forschungsgemeinschaft via project INST 270/290-1 FUGB.
PY - 2022/5/26
Y1 - 2022/5/26
N2 - Bismuth compounds are of growing interest with regard to potential applications in catalysis, medicine, and electronics, for which their environmentally benign nature is one of the key factors. One thing that currently hampers the further development of bismuth oxido-based materials, however, is the often low solubility of the precursors, which makes targeted immobilisation on substrates challenging. We present an approach towards the solubilisation of bismuth oxido clusters by introducing an amino carboxylate as a functional group. For this purpose, the bismuth oxido cluster [Bi38O45(NO3)20(dmso)28](NO3)4·4dmso (dmso = dimethyl sulfoxide) was reacted with the sodium salt of tert-butyloxycabonyl (Boc)-protected phenylalanine (L-Phe) to obtain the soluble and chiral nanocluster [Bi38O45(Boc-Phe-O)24(dmso)9]. The exchange of the nitrates by the amino carboxylates was proven by nuclear magnetic resonance, Fourier-transform infrared spectroscopy, as well as elemental analysis and X-ray photoemission spectroscopy. The solubility of the bismuth oxido cluster in a protic as well as an aprotic polar organic solvent and the growth mode of the clusters upon spin, dip, and drop coating on gold surfaces were studied by a variety of microscopy, as well as spectroscopic techniques. In all cases, the bismuth oxido clusters form crystalline agglomerations with size, height, and distribution on the substrate that can be controlled by the choice of the solvent and of the deposition method.
AB - Bismuth compounds are of growing interest with regard to potential applications in catalysis, medicine, and electronics, for which their environmentally benign nature is one of the key factors. One thing that currently hampers the further development of bismuth oxido-based materials, however, is the often low solubility of the precursors, which makes targeted immobilisation on substrates challenging. We present an approach towards the solubilisation of bismuth oxido clusters by introducing an amino carboxylate as a functional group. For this purpose, the bismuth oxido cluster [Bi38O45(NO3)20(dmso)28](NO3)4·4dmso (dmso = dimethyl sulfoxide) was reacted with the sodium salt of tert-butyloxycabonyl (Boc)-protected phenylalanine (L-Phe) to obtain the soluble and chiral nanocluster [Bi38O45(Boc-Phe-O)24(dmso)9]. The exchange of the nitrates by the amino carboxylates was proven by nuclear magnetic resonance, Fourier-transform infrared spectroscopy, as well as elemental analysis and X-ray photoemission spectroscopy. The solubility of the bismuth oxido cluster in a protic as well as an aprotic polar organic solvent and the growth mode of the clusters upon spin, dip, and drop coating on gold surfaces were studied by a variety of microscopy, as well as spectroscopic techniques. In all cases, the bismuth oxido clusters form crystalline agglomerations with size, height, and distribution on the substrate that can be controlled by the choice of the solvent and of the deposition method.
KW - AFM
KW - Boc-protected amino acid functionalized chiral bismuth oxido nanocluster
KW - FTIR
KW - SEM
KW - XPS
KW - dip coating
KW - drop coating
KW - film growth mechanisms
KW - optical microscopy
KW - spin coating
UR - https://www.mendeley.com/catalogue/ca64a737-8c68-3433-8aa1-f55f38b4b101/
U2 - 10.3390/nano12111815
DO - 10.3390/nano12111815
M3 - Article
C2 - 35683672
VL - 12
JO - Nanomaterials
JF - Nanomaterials
SN - 2079-4991
IS - 11
M1 - 1815
ER -
ID: 43513528