Castaldelli E., Imalka Jayawardena K.D.G., Cox D.C. et al. · Nature Communications · 2017 · 2139
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
MOF-CoNDI-py-2 is a highly crystalline, electrochemically active MOF with electrical semiconductivity and photoactivity.
Caveat: The paper reports electrical conduction and responsivity, but does not provide text/table conductivity values; several transport magnitudes are only in plots.
6 · Summary · Linked to 3 structured results
The single-crystal model contains large solvent-accessible void volume, consistent with additional solvent content seen by TGA.
Caveat: Void analysis is crystallographic; no gas sorption measurement was reported.
3 · Results · Supplementary Fig. 2 · Linked to 3 structured results
Anisotropic electrical characteristics are attributed to different charge transport along Co...NDI-py versus directions perpendicular to aromatic rings, plus contact/facet effects at Pt/MOF interfaces.
Caveat: The claim is based on device geometry and anisotropic I-V/photoresponse; individual facet-contact properties are not independently quantified.
5 · Discussion · Fig. 7 · Linked to 3 structured results
The MOF device exhibits both photoconductive and photoresistive behaviour depending on wavelength, bias and contact direction.
Caveat: Direction- and wavelength-resolved responses are mostly graphical; exact curve data are not supplied in the text layer.
5 · Discussion · Supplementary Figs. 7 and 8 · Linked to 2 structured results
The authors propose charge transfer from Co centres to pi-acceptor NDI-py, with holes transported through the Co...TpA direction and electrons through the NDI-py direction.
Caveat: Mechanistic interpretation inferred from optical/electrochemical data and anisotropic device response, not directly from mobility measurements.
4-5 · Discussion · Fig. 8 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| MOF-CoNDI-py-2 | C27H19.5Co1.5N3O9.25 empirical formula from SI Table 3Co(II) centres; two crystallographically independent high-spin Co(II) atoms in a trinuclear cobalt fragment · N,N'-bis(4-pyridyl)-1,4,5,8-naphthalene diimide (NDI-py) and terephthalate (TpA); coordinated/included DMF and water/solvent modelled | 3D · PristineCrystalline monoclinic C2/c framework, CCDC 1517923; NDI-py molecules are oriented in layered fashion and PXRD matches the simulated pattern with preferred-orientation differences. | 2-3 · Results - Synthesis of MOF-CoNDI-py-2 · Fig. 1; Fig. 3 |
| N,N'-bis(4-pyridyl)-1,4,5,8-naphthalene diimide (NDI-py) | organic ligand/precursor; exact molecular formula not explicitly reported in extracted textnaphthalene diimide core with two 4-pyridyl substituents | 0D · Model SystemMolecular ligand used as the primary redox-active linker for MOF-CoNDI-py-2. | 2 · Introduction/Results |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| MOF-CoNDI-py-2 purple leaf-like crystals/powderresearch_0772__mat__mat_mof_condi_py_2 | Single Crystal · Target Sample · Pristine Framework | solvothermally synthesised crystals; powder portions dried for PXRD/FTIR/TGA as specified by measurement methods | 3 · Results - Synthesis of MOF-CoNDI-py-2 |
| MOF-CoNDI-py-2 single-crystal four-pad deviceresearch_0772__mat__mat_mof_condi_py_2 | Electrode · Target Sample · Pristine Framework | MOF crystals deposited from acetone suspension and connected to Au pads by Pt electrodes via FIB-assisted vapour depositionp-Si/SiO2 wafer with 200 nm SiO2; Au pads with Ti adhesion layer; Pt deposited contacts · single crystal; thickness not reported | 4,6 · Methods - Electronic device · Fig. 6 |
| NDI-py ligandresearch_0772__mat__mat_ndi_py | Powder · Model System · Model | synthesised organic ligand; recrystallised in DMF before characterisation | 6 · Methods - Synthesis of NDI-py |