General Conclusion

This Ph.D. thesis presents the fabrication of flexible, free-standing 2D coordination polymer membranes with specific proton-conducting properties. The study explores the principles of proton conduction, fabricates CP membranes, and demonstrates robust proton conduction under mechanical stress. A record rectification ratio was achieved with a heterogeneous membrane, and the membranes show excellent bending stability, indicating potential for flexible protonic devices without a polymer matrix.