Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers
AssigneeBend Research, Inc.
InventorsHarold K. Lonsdale, Carl C. Wamser
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Abstract
The preparation of a novel class of thin film membranes by interfacial polymerization is disclosed, said membranes incorporating as part of their polymeric structure the functionality of monomeric or oligomeric precursors. Specific embodiments include porphyrin and phthalocyanine derivatives that are photochemically or electrochemically active, as well as chemically asymmetric membranes.
Claims18
A thin film composite membrane comprising a microporous polymeric membrane support and an ultrathin membrane comprising the interfacial polymerization reaction product made from at least one prepolymer of the type M.sub.F X.sub.m, M.sub.F.sup.' Y.sub.n and N.sub.F Y.sub.n wherein
- M.sub.F and M.sub.F.sup.' are monomeric or oligomeric moieties that can initiate photochemical redox reactions,
- N.sub.F is a linkable or crosslinkable monomeric or ologiomeric moiety that cannot initiate photochemical redox reactions,
- X and Y are groups which render said prepolymers reactive in an interfacial polymerization reaction,
- m and n are integers .gtoreq.2, and wherein said interfacial polymerization reaction product possesses substantially the same selective photochemical redox reactivity as M.sub.F and M.sub.F.sup.'.
A composition of matter comprising the interfacial polymerization reaction product of monomers that are mutually reactive in a condensation reaction, at least one of said monomers being of the formula ##STR7## wherein M is a metal ion or --H H--,
- R is H, alkyl, aryl, pyridinyl, R', alkyl-R', or aryl-R',
- R' is H, Hal, NH.sub.2, CH.sub.2 NH.sub.2 SH, OH, COHal, COOH, NCO, or SO.sub.2 Hal, and
- Hal is a halide.
A thin film composite membrane comprising a micorporous polymeric membrane support and an ultrathin membrane comprising the interfacial polymerization reaction product of monomers that are mutually reactive in a condensation reaction, at least one of said monomers being of the formula ##STR8## wherein M is a metal ion or --H H--,
- R is H, alkyl, aryl, pyridinyl, R',
- alkyl-R', or aryl-R',
- R' is H, Hal, NH.sub.2, CH.sub.2 NH.sub.2, SH, OH, COHal, COOH, NCO, or SO.sub.2 Hal, and
- Hal is a halide.
A method of making a polymer containing recurring linked and crosslinked groups selected from M.sub.F and M.sub.F.sup.' wherein M.sub.F and M.sub.F.sup.' are prepolymeric moieties that can initiate photochemical redox reactions, comprising:
- (a) forming a first solution of M.sub.F X.sub.m in a first liquid;
- (b) forming a second solution containing a second prepolymeric compound selected from M.sub.F X.sub.n , M.sub.F.sup.' Y.sub.n and N.sub.F Y.sub.n in a second liquid which is immiscible with said first liquid;
- (c) combining said first and second solutions so as to form an interface between the two;
- and
- (d) reacting M.sub.F X.sub.m and said second prepolymeric compound at the interface of said first and second solutions wherien X and Y are different groups which are mutually reactive in an interfacial polymerization reaction, N.sub.F is a linking or a crosslinking group, and m and n are integers .gtoreq.2.
A method of making a polymer containing recurring linked and crosslinked groups of porphyrins, phthalocyanines and derivatives thereof comprising:
- (a) forming a first solution of a first reactive compound of the formula ##STR9## wherein M is a metal ion or --H H--,
- R is H, alkyl, aryl, pyridinyl, R', alkyl-R', or aryl-R',
- R' is H, Hal, NH.sub.2, CH.sub.2 NH.sub.2, SH, OH, COHal, COOH, NCO, or SO.sub.2 Hal, and
- Hal is halide;
- (b) forming a second solution of a second reactive compound that is reactive with said first reactive compound in an interfacial polymerization reaction, said second solution being immiscible with said first solution;
- (c) combining said first and second solutions so as to form an interface between the two;
- and
- (d) reacting said first and second reactive compounds at the interface of said first and second solutions.
Dependencies are inferred from the claim text.