Primary studyCore evidenceTransport Physics

Three-Dimensional-Coordination Polymer of Zn(II)-Carboxylate: Structural Elucidation, Photoelectrical Conductivity, and Biological Activity

Chandra A., Das M., Pal K. et al. · ACS Omega · 2019 · 17649-17661

3materials
7samples
3synthesis routes
14measurements
49results
5claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: Medium

Compound 1 shows antibacterial and anticancer activity, attributed to intracellular ROS generation.

Caveat: Biological activity is outside the conductive-MOF transport evidence focus and is included as contextual application data.

17656-17657 · Results and Discussion, Biological Study; Conclusions · Figures 13-15 · Linked to 3 structured results

Application RelevanceSupport assessment: High

The compound 1 device has better photodetector potential than the ppmh ligand device, with larger photosensitivity, responsivity, detectivity and on/off ratios and lower series resistance.

Caveat: Results are from one device architecture; no device-to-device statistical spread is reported for transport parameters.

17652-17654 · Results and Discussion, I-V Measurement and Analysis · Table 1 · Linked to 10 structured results

Phase AssignmentSupport assessment: High

Compound 1 is a crystalline Zn(II)-carboxylate coordination polymer whose 2D coordination structure is assembled into a 3D supramolecular framework through C-H...pi and pi...pi interactions.

Caveat: The formula is reported inconsistently between the synthesis section and Table 2.

17649-17651 · Abstract; Results and Discussion, Structural Descriptions · Figures 2-4 · Linked to 2 structured results

Structure Property LinkSupport assessment: High

The lower optical band gap and higher light absorption of compound 1 relative to ppmh are used to explain the higher photoconductivity of the compound 1 Schottky diode.

Caveat: The mechanistic explanation is qualitative; no carrier mobility or time-resolved transport value is reported.

17652 · Results and Discussion, I-V Measurement and Analysis · Figures 5-8 · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

DFT-calculated HOMO-LUMO gaps are smaller for compound 1 than for ppmh and H2bdc, supporting the interpretation that compound 1 is more conductive than its component ligands.

Caveat: DFT model is molecular/coordination-unit based and qualitative for bulk/device transport.

17654 · Results and Discussion, DFT Computation and the Band Gap · Figure 11 · Linked to 3 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
compound 1; [Zn4(bdc)4(ppmh)2(H2O)]n[Zn4(bdc)4(ppmh)2(H2O)]n; elemental formula reported as C54H36N8O19Zn4 in synthesis section and C54H36N10O17Zn4 in Table 2Zn(II); four Zn centres in the asymmetric unit, assigned Zn01, Zn02, Zn03 and Zn04 · 1,4-benzenedicarboxylate (bdc2-) and N-pyridin-2-yl-N'-pyridin-4-ylmethylene-hydrazine (ppmh)3D · PristineMonoclinic P21 coordination polymer: bdc propagates 1D chains, the coordination framework forms a 2D network, and noncovalent C-H...pi and pi...pi contacts generate a 3D supramolecular assembly.17650-17651 · Results and Discussion, Structural Descriptions · Figures 2-4; Table 2
1,4-benzene dicarboxylic acid (H2bdc)H2bdcnone · 1,4-benzene dicarboxylic acid ligand0D · Model SystemFree organic linker used as precursor, biological control and DFT model system.17649 · Abstract
N-pyridin-2-yl-N'-pyridin-4-ylmethylene-hydrazine (ppmh)C11H10N4none · pyridylhydrazone ligand0D · Model SystemMolecular ligand control; monoclinic P21/n, Z = 8.17650 · Results and Discussion, Structural Descriptions · Figure 1; Table 2

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 7 sample records
SampleForm and roleProcessing and geometrySource
as-synthesised brown crystals of compound 1research_0204__mat__compound_1Single Crystal · Target Sample · Pristine FrameworkBrown crystals obtained after 3 weeks by layering; powdered/grinded portions used for PXRD and thermal analysis.17657 · Experimental Section, Synthesis of Compound
compound 1 thin-film Schottky dioderesearch_0204__mat__compound_1Thin Film · Target Sample · Pristine FrameworkCompound 1 in DMF ultrasonicated, spin-coated at 600 rpm for 1 min, repeated four times, dried under vacuum; Al electrode evaporated at 10^-6 Torr.ITO-coated glass with Al top electrode · 1 um17658 · Experimental Section, Schottky Device and I-V Measurements
DFT model of compound 1research_0204__mat__compound_1Model · Model System · ModelSCXRD-coordinate-based DFT/TDDFT model.17658 · Experimental Section, Computational Method
DFT model of H2bdcresearch_0204__mat__h2bdcModel · Model System · ModelDFT model of free carboxylate precursor.17658 · Experimental Section, Computational Method
ppmh yellow rod-shaped crystalsresearch_0204__mat__ppmhSingle Crystal · Pristine Control · ModelYellow rod-shaped crystals from reflux synthesis and MeOH recrystallisation.17657 · Experimental Section, Synthesis of Compound
ppmh ligand thin-film Schottky dioderesearch_0204__mat__ppmhThin Film · Pristine Control · ModelLigand-based Schottky barrier diode; detailed fabrication wording is given for Schottky devices and compound 1, while Figure 7/Table 1 report ppmh device results.ITO-coated glass with Al top electrode17652-17653 · Results and Discussion, I-V Measurement and Analysis · Figure 7; Table 1
DFT model of ppmhresearch_0204__mat__ppmhModel · Model System · ModelDFT/TDDFT model of free ligand.17658 · Experimental Section, Computational Method