TY - JOUR
T1 - Convenient chirality transfer from organics to titania
T2 - Construction and optical properties
AU - Liu, Xin Ling
AU - Murakami, Ken
AU - Matsukizono, Hiroyuki
AU - Tsunega, Seiji
AU - Jin, Ren Hua
N1 - Funding Information:
This work was supported in part by MEXT-Supported Program for the Strategic Research Foundation at Private Universities: ‘‘Creation of new fusion materials by integration of highly-ordered nano inorganic materials and ultra-precisely controlled organic polymers’’ (2013–2017) and by JSPS KAKENHI Grant Number JP16H06515 (Coordination Asymmetry).
Funding Information:
This work was supported in part by MEXT-Supported Program for the Strategic Research Foundation at Private Universities: ''Creation of new fusion materials by integration of highly-ordered nano inorganic materials and ultra-precisely controlled organic polymers'' (2013-2017) and by JSPS KAKENHI Grant Number JP16H06515 (Coordination Asymmetry).
Publisher Copyright:
© 2018 The Royal Society of Chemistry.
PY - 2018
Y1 - 2018
N2 - Polyethyleneimine (PEI) complexed with chiral d- (or l-) tartaric acid (tart) in water can self-organize into chiral and crystalline PEI/tart assemblies. It has been previously confirmed that the complexes of PEI/tart could work as catalytic/chiral templates to induce the deposition of SiO2 nanofibres with optical activity but without outwards shape chirality such as helices. In this work, we found that the templating functions of PEI/tart were still effective to prompt the deposition of TiO2 to form chiral PEI/tart@TiO2 hybrid nanofibres under aqueous and room temperature conditions within two hours. Furthermore, the co-deposition of TiO2 and SiO2 was also fulfilled to yield chiral PEI/tart@TiO2/SiO2 nanofibres. These TiO2-containing hybrid nanofibres showed non-helical shapes on the length scale; however, chiroptical signals with mirror relation around the UV-Vis absorption band of TiO2 remarkably appeared on their circular dichroism (CD) spectra. By means of the protocols of XRD, TEM, SEM, UV-Vis, CD and XPS, structural features and thermoproperties of the chiral TiO2 and SiO2/TiO2 were investigated.
AB - Polyethyleneimine (PEI) complexed with chiral d- (or l-) tartaric acid (tart) in water can self-organize into chiral and crystalline PEI/tart assemblies. It has been previously confirmed that the complexes of PEI/tart could work as catalytic/chiral templates to induce the deposition of SiO2 nanofibres with optical activity but without outwards shape chirality such as helices. In this work, we found that the templating functions of PEI/tart were still effective to prompt the deposition of TiO2 to form chiral PEI/tart@TiO2 hybrid nanofibres under aqueous and room temperature conditions within two hours. Furthermore, the co-deposition of TiO2 and SiO2 was also fulfilled to yield chiral PEI/tart@TiO2/SiO2 nanofibres. These TiO2-containing hybrid nanofibres showed non-helical shapes on the length scale; however, chiroptical signals with mirror relation around the UV-Vis absorption band of TiO2 remarkably appeared on their circular dichroism (CD) spectra. By means of the protocols of XRD, TEM, SEM, UV-Vis, CD and XPS, structural features and thermoproperties of the chiral TiO2 and SiO2/TiO2 were investigated.
UR - http://www.scopus.com/inward/record.url?scp=85046694322&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046694322&partnerID=8YFLogxK
U2 - 10.1039/c8ra02926a
DO - 10.1039/c8ra02926a
M3 - Article
AN - SCOPUS:85046694322
SN - 2046-2069
VL - 8
SP - 15951
EP - 15960
JO - RSC Advances
JF - RSC Advances
IS - 29
ER -