TY - JOUR
T1 - Free-standing membranes from the chemical exfoliation of mesoporous amorphous titania thin film
AU - Malgras, Victor
AU - Matsushita, Yoshitaka
AU - Henzie, Joel
AU - Sugahara, Yoshiyuki
AU - Yamauchi, Yusuke
N1 - Funding Information:
This work was supported by the JST-ERATO Yamauchi Materials Space-Tectonics Project (JPMJER2003), the Queensland Node of the Australian National Fabrication Facility (ANFF-Q), and the NIMS ICYS. TEM observations were carried out by the TEM station, XPS and XRD have been performed by the Materials Analysis Station (NIMS).
Publisher Copyright:
© The Royal Society of Chemistry 2021.
PY - 2021/8/7
Y1 - 2021/8/7
N2 - Thin films are typically bound to their substrate, limiting their integration on rough, porous, curved or chemically/thermally sensitive surfaces. Instead of employing tedious and expensive back-etching processes, specific chemical routes can enable the exfoliation of such thin structures. Herein, we demonstrate that an alkaline treatment can exfoliate a hybrid thin film comprising amorphous titania embedded in well-ordered block-copolymer micelles, which can be redeposited elsewhere. We provide sufficient evidence of the preservation of pore ordering and the importance of neutralizing the solution to spare the system from the redissolution of the titania species.
AB - Thin films are typically bound to their substrate, limiting their integration on rough, porous, curved or chemically/thermally sensitive surfaces. Instead of employing tedious and expensive back-etching processes, specific chemical routes can enable the exfoliation of such thin structures. Herein, we demonstrate that an alkaline treatment can exfoliate a hybrid thin film comprising amorphous titania embedded in well-ordered block-copolymer micelles, which can be redeposited elsewhere. We provide sufficient evidence of the preservation of pore ordering and the importance of neutralizing the solution to spare the system from the redissolution of the titania species.
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U2 - 10.1039/d1cc02645c
DO - 10.1039/d1cc02645c
M3 - Article
C2 - 34235527
AN - SCOPUS:85111556473
SN - 1359-7345
VL - 57
SP - 7513
EP - 7516
JO - Chemical Communications
JF - Chemical Communications
IS - 61
ER -