Tunable electrical conductivity in oriented thin films of tetrathiafulvalene-based covalent organic framework

Abstract

Preorganization in a covalent organic framework leads to the generation of a more conductive mixed-valence state upon doping.

Photoactive and Conducting Covalent Organic Frameworks

“…[30] The oriented thin film architecture allowed for dopant diffusion through the COF pores. Conductivity as high as 0.28 × 10 −3 S m −1 was observed for the iodine-doped COF thin films, which is three orders of magnitude higher than that of the pristine film.…”

Low Band Gap Benzimidazole COF Supported Ni3N as Highly Active OER Catalyst

“…[8,9,11] Very recently, we demonstrated the high oxygen evolution reaction (OER) activity in a COF arising from the nanoscopic confinement of non-noble metal hydroxides within the mesopores of a N-rich COF. [13,14] For example, benzotriazole [15,16] and benzimidazole [17] based polymers, thiofulvalene, [18] and benzothiadiazole [13a] COFs show conjugation assisted photocatalytic activity and electrical conductivity and have been used in organic electronics. [13,14] For example, benzotriazole [15,16] and benzimidazole [17] based polymers, thiofulvalene, [18] and benzothiadiazole [13a] COFs show conjugation assisted photocatalytic activity and electrical conductivity and have been used in organic electronics.…”

“…[13,14] For example, benzotriazole [15,16] and benzimidazole [17] based polymers, thiofulvalene, [18] and benzothiadiazole [13a] COFs show conjugation assisted photocatalytic activity and electrical conductivity and have been used in organic electronics. [13][14][15][16][17][18] The band gap of such organic materials to a large extent is decided by the ordering of a face-to-face stacked columns of π-components, which is crucial to obtaining aligned conduction pathways. [13][14][15][16][17][18] The band gap of such organic materials to a large extent is decided by the ordering of a face-to-face stacked columns of π-components, which is crucial to obtaining aligned conduction pathways.…”

Photo‐ and Electronically Switchable Spin‐Crossover Iron(II) Metal–Organic Frameworks Based on a Tetrathiafulvalene Ligand

“…[28] Electron paramagnetic resonance (EPR) studies of the solid compounds further confirmed the effectiveness of chemical doping ( Figure 5). [30] TheE PR signal increased after I 2 doping, clearly validating the increased concentration of the TTFC + radical cation. [29] Aweak signal in the EPR spectrum of pristine 1 and 2 indicates the presence of av ery small amount of the TTF moiety in its radical cation form, which is consistent with the weak band at around 11 500 cm À1 in the UV/Vis-NIR spectra.…”