Chiral templating of polycarbonate membranes by pinene using the modified atomic layer deposition approach

0533830 - ÚMCH 2021 RIV US eng J - Journal Article
Brožová, Libuše - Zazpe, R. - Otmar, Miroslav - Přikryl, J. - Bulánek, R. - Žitka, Jan - Krejčíková, Sabina - Izák, Pavel - Macák, J. M.
Chiral templating of polycarbonate membranes by pinene using the modified atomic layer deposition approach.
Langmuir. Roč. 36, č. 42 (2020), s. 12723-12734. ISSN 0743-7463
R&D Projects: GA ČR(CZ) GA20-06264S
Research Infrastructure: CEMNAT II - 90103
Institutional support: RVO:61389013 ; RVO:67985858
Keywords : chiral templating * polycarbonate * trimethylaluminum
OECD category: Polymer science; Chemical process engineering (UCHP-M)
Impact factor: 3.882, year: 2020
Method of publishing: Limited access
https://pubs.acs.org/doi/10.1021/acs.langmuir.0c02373

In this article, chiral templating of a polycarbonate (PC) membrane by (−)-α-pinene using the atomic layer deposition (ALD) approach is investigated. The templating with the enantiomer of (−)-α-pinene, used as a case compound, was performed either on the original commercial PC membrane or on the PC membrane with a beforehand deposited Al2O3 layer. The efficiency of the templating was assessed by a difference in the membrane ability to adsorb/absorb (−)-α-pinene, (+)-α-pinene, and their racemic mixture, using a very sensitive gas sorption analyzer. The results clearly show that the solution-diffusion mechanism rather than the sieving mechanism applied for adsorption/absorption of (−/+)-α-pinene enantiomers, which have the same size of the molecule. The PC membrane with the predeposited Al2O3 before the (−)-α-pinene templating shows significantly higher sorption of (−)-α-pinene compared to (+)-α-pinene and racemate, which clearly demonstrates the presence of a chiral recognition effect.
Permanent Link: http://hdl.handle.net/11104/0312698