Convenient chirality transfer from organics to titania: Construction and optical properties

Xin Ling Liu, Ken Murakami, Hiroyuki Matsukizono, Seiji Tsunega, Ren Hua Jin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)15951-15960
Number of pages10
JournalRSC Advances
Volume8
Issue number29
DOIs
Publication statusPublished - 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Convenient chirality transfer from organics to titania: Construction and optical properties'. Together they form a unique fingerprint.

Cite this