Foundry staff and users created chemically robust two-dimensional metallophthalocyanine covalent organic frameworks (COFs) which show anisotropic hole hopping behavior and high carrier mobility.
Significance and Impact
This work provides a thorough understanding of the mechanisms controlling the electronic properties in these chemically robust two-dimensional COFs, which paves the way for their practical applications in opto-electronic and energy-related devices.
- The research made three chemically robust 2D metallophthalocyanine frameworks based on new arylether linkages and tested their growth on different substrates (e.g., SiO2/Si; ITO; quartz).
- Combined DFT calculations and experiments revealed anisotropic carrier transport inside the framework, which makes with hole hopping along the columnar stacked phthalocyanine planes more feasible, yielding a high mobility of ~ 19.4 cm2 V-1 s-1.
- The team also tested the porous material as an electrode for all-solid-state supercapacitors. The capacitance was shown to be mostly attributed from the redox process with a maximum contribution of ~88%.