Fluorinated polyaromatics with linear, branched or crosslinked structure for anion exchange membranes and ionomers
AssigneeEcole Polytechnique Federale De Lausanne (Epfl)
InventorsXile HU, Nanjun CHEN, Xingyu WU
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Abstract
The present specification relates to a fluorinated polyaromatic polymer comprising at least one fluorinated unit FU of formula I and at least one cationic unit CU of formula B or C
Claims13
A fluorinated polyaromatic polymer comprising
- at least one fluorinated unit FU of formula I
- wherein
- X is C or N,
- Y is C,
- R1, R2, R5 and R6 are independently selected from
- H,
- —C1-C10 alkyl, wherein the —C1-C10 alkyl is substituted or unsubstituted, particularly —C1-C6 alkyl,
- —C2-C10 alkenyl, wherein the —C2-C10 alkenyl is substituted or unsubstituted, particularly —C2-C6 alkenyl,
- —C2-C10 alkynyl, wherein the —C2-C10 alkynyl is substituted or unsubstituted, particularly C2-C6 alkynyl,
- wherein at least one of R1, R2, R5 and R6 is
- Ra3, Rb4 and Rd7 are independently selected from
- —C1-C10 alkyl, wherein the —C1-C10 alkyl is substituted or unsubstituted, particularly —C1-C6 alkyl,
- —C2-C10 alkenyl, wherein the —C2-C10 alkenyl is substituted or unsubstituted, particularly —C2-C6 alkenyl,
- —C2-C10 alkynyl, wherein the —C2-C10 alkynyl is substituted or unsubstituted, particularly C2-C6 alkynyl,
- a and b are independently 0, 1, 2, or 3, particularly 0 or 1, more particularly 0,
- d is 0, 1, 2, 3 or 4, particularly 0 or 1, more particularly 0,
- n is 0 or 1,
- r is, 1, 2, 3, 4, 5 or 6, particularly, 1, 2, or 3, more particularly 1 or 2,
- p is independently between 1 and 20, particularly 1 and 15, more particularly 1 and 9, and
- q is independently between 0 and 20, particularly 0 and 15, more particularly 0 and 9,
- and
- at least one cationic unit CU of formula B or C
- wherein
- R8 is a partially or fully fluorinated C1-C6 alkyl, particularly CF3,
- R9 is selected from
- —C1-C10 alkyl, wherein the —C1-C10 alkyl is substituted or unsubstituted, particularly —C1-C6 alkyl,
- —C2-C10 alkenyl, wherein the —C2-C10 alkenyl is substituted or unsubstituted, particularly —C2-C6 alkenyl,
- —C2-C10 alkynyl, wherein the —C2-C10 alkynyl is substituted or unsubstituted, particularly C2-C6 alkynyl,
- —(CH2)s—N(R12)2,
- —(CH2)s—NHR12,
- —(CH2)s—N+(R12)3,
- wherein R12 is independently selected from
- —C1-C10 alkyl, wherein the —C1-C10 alkyl is substituted or unsubstituted, particularly —C1-C6 alkyl,
- —C2-C10 alkenyl, wherein the —C2-C10 alkenyl substituted or unsubstituted, particularly —C2-C6 alkenyl,
- —C2-C10 alkynyl, wherein the —C2-C10 alkynyl is substituted or unsubstituted, particularly C2-C6 alkynyl,
- s is between 0 and 20
- -Ph-Rf13,
- R10 and R11 are independently selected from
- H
- —C1-C10 alkyl, wherein the —C1-C10 alkyl is substituted or unsubstituted, particularly —C1-C6 alkyl,
- —C2-C10 alkenyl, wherein the —C2-C10 alkenyl is substituted or unsubstituted, particularly —C2-C6 alkenyl,
- —C2-C10 alkynyl, wherein the —C2-C10 alkynyl is substituted or unsubstituted, particularly C2-C6 alkynyl,
- or R10 and R11 are connected to each other to form a cycloalkyl comprising 4 to 10 C atoms,
- z is 0 or 1,
- A− is an anion.
A method for preparing a fluorinated polyaromatic polymer comprising one or more linear units LU comprising reacting at least one fluorinated unit precursor FUP and optionally at least one cationic unit precursor CUP and optionally at least one bifunctional aromatic moiety precursor BAP.
A method for preparing a fluorinated polyaromatic polymer comprising a crosslinking unit CU comprising two or more linear units LU connected through one or more crosslinkers CL comprising
- reacting at least one fluorinated unit precursor FUP and at least one cationic unit precursor CUP and optionally at least one bifunctional aromatic moiety precursor BAP yielding an intermediate polymer, and
- reacting the intermediate polymer with at least one crosslinking unit precursor CLU.
Dependencies are inferred from the claim text.