TY - JOUR
T1 - Thin Film Polyamide Membranes with Photoresponsive Antibacterial Activity
AU - Phuoc, Duong
AU - Hong, Pei-Ying
AU - Musteata, Valentina-Elena
AU - Peinemann, Klaus-Viktor
AU - Nunes, Suzana Pereira
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was funded by King Abdullah University of Science and Technology (KAUST). The authors would like to thank N.L. Le for her help with the PEI membrane preparation.
PY - 2017/8/9
Y1 - 2017/8/9
N2 - Membranes containing a photosensitizer molecule as part of the selective layer are proposed with demonstrated anti-biofouling activity. For the membrane preparation, mixtures of an amine-functionalized photosensitizer molecule, (5,10,15,20-(tetra-4-aminophenyl)porphyrin) and m-phenylene diamine (MPD) reacted with trimesoyl chloride (TMC) by interfacial polymerization to form thin polyamide films on top of an asymmetric porous support. A highly permeable membrane (35.4 Lm−2h−1bar−1) with 99 % rejection of Brilliant Blue R (826 g/mol) was obtained using 0.25 wt% porphyrin and 0.75 wt% MPD as amine monomers. Under visible light exposure, singlet oxygen (1O2) is generated in the porphyrin containing-polyamide film, reaching the bacteria in the feed by diffusion and enhancing the biofouling resistance and anti-microbial activity. Anti-biofouling and anti-microbial photoactivity in solution are demonstrated on Staphylococcus aureus at different porphyrin concentrations and light exposure time.
AB - Membranes containing a photosensitizer molecule as part of the selective layer are proposed with demonstrated anti-biofouling activity. For the membrane preparation, mixtures of an amine-functionalized photosensitizer molecule, (5,10,15,20-(tetra-4-aminophenyl)porphyrin) and m-phenylene diamine (MPD) reacted with trimesoyl chloride (TMC) by interfacial polymerization to form thin polyamide films on top of an asymmetric porous support. A highly permeable membrane (35.4 Lm−2h−1bar−1) with 99 % rejection of Brilliant Blue R (826 g/mol) was obtained using 0.25 wt% porphyrin and 0.75 wt% MPD as amine monomers. Under visible light exposure, singlet oxygen (1O2) is generated in the porphyrin containing-polyamide film, reaching the bacteria in the feed by diffusion and enhancing the biofouling resistance and anti-microbial activity. Anti-biofouling and anti-microbial photoactivity in solution are demonstrated on Staphylococcus aureus at different porphyrin concentrations and light exposure time.
UR - http://hdl.handle.net/10754/625731
UR - http://onlinelibrary.wiley.com/doi/10.1002/slct.201701279/abstract
UR - http://www.scopus.com/inward/record.url?scp=85037743746&partnerID=8YFLogxK
U2 - 10.1002/slct.201701279
DO - 10.1002/slct.201701279
M3 - Article
SN - 2365-6549
VL - 2
SP - 6612
EP - 6616
JO - ChemistrySelect
JF - ChemistrySelect
IS - 22
ER -