Primary studyPeripheral evidenceSensor

Ultra-Stable Metal-Organic Framework with Concurrent High Proton Conductivity and Fluorescence Sensing for Nitrobenzene

Lu Y.-B., Liao Y.-Q., Dong L. et al. · Chemistry of Materials · 2021 · 7858-7868

1materials
4samples
1synthesis routes
13measurements
45results
6claims 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: High

Compound 1 shows notable thermal and chemical stability: TGA stable to about 330 °C, PXRD retention after water/organic solvents, and pH 3-11 stability for 2 weeks.

Caveat: Stability is mainly phase-retention by PXRD and TGA; no post-treatment surface area or defect quantification reported.

p003 / 7860 · Thermal and Chemical Stabilities · Figures 2 and 3 · Linked to 4 structured results

Application RelevanceSupport assessment: High

Compound 1 acts as a selective aqueous fluorescence sensor for nitrobenzene with KSV = 680.52 M^-1 and a 2.89 x 10^-4 M detection limit.

Caveat: Application is solution fluorescence quenching; device-level sensor fabrication was not reported.

p008 / 7865 · Luminescence Sensing Properties · Figure 7 · Linked to 4 structured results

Phase AssignmentSupport assessment: High

Compound 1 is a pristine 3D anionic Cu(I)-tetrazolate MOF, [Cu3(mtz)4]-, charge-balanced by Na+ cations and containing 1D channels.

Caveat: Main article Table 1 formula line appears to contain a typo; CIF formula is used for exact elemental formula.

p003 / 7860 · Structure Description and Discussion · Figure 1 · Linked to 3 structured results

Structure Property LinkSupport assessment: High

Water vapour adsorption and uncoordinated tetrazolate N atoms in 1D channels enable water-assisted proton transport in compound 1.

Caveat: Hydrogen-bonding pathway is mechanistic interpretation rather than direct proton-position measurement.

p004-p006 / 7861-7863 · Proton Conduction · Figures 4 and 5c · Linked to 3 structured results

Synthesis MechanismSupport assessment: Medium

Nitrobenzene fluorescence quenching is attributed to charge transfer from tetrazole rings of mtz ligands to electron-deficient nitrobenzene adsorbed on the MOF surface.

Caveat: Mechanism is inferred from molecular orbital considerations and DOS assignments, not from direct time-resolved or adsorption spectroscopy.

p008 / 7865 · Luminescence Sensing Properties · Linked to 3 structured results

Transport MechanismSupport assessment: Medium

The authors assign proton conduction in compound 1 to a Grotthuss mechanism rather than Na+ ion migration or vehicle transport.

Caveat: Based primarily on activation energy threshold and structural plausibility; the figure label and text differ slightly for Ea.

p005 / 7862 · Proton Conduction · Figure 4d · Linked to 2 structured results

Material identities

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

MaterialCompositionStructure contextSource
compound 1; NaCu3(mtz)4; sodium copper(I) 5-methyltetrazolate MOFNaCu3(mtz)4; CIF formula sum C8 H12 Cu3 N16 NaCu(I) centres in distorted tetrahedral CuN4 environments; Na+ counter-cations occupy one channel · mtz = 5-methyltetrazolate / C2H3N4-; two crystallographically independent mtz- ligands3D · Pristine3D anionic [Cu3(mtz)4]- framework with 1D channels; tetragonal I4(1)/acd by single-crystal XRDp003 / 7860 · Results and Discussion - Structure Description and Discussion · Figure 1; Table 1

Sample register

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

Show 4 sample records
SampleForm and roleProcessing and geometrySource
aqueous suspension of ground compound 1research_0854__mat__mof_1_nacu3_mtz4Powder · Target Sample · Pristine Framework2 mg ground 1 dispersed in 2 mL water and ultrasonicated for 0.5 h before fluorescence measurementsp007 / 7864 · Luminescence Sensing Properties · Figures 6 and 7
crystal-structure model of compound 1research_0854__mat__mof_1_nacu3_mtz4Model · Model System · Modelexperimental crystal structure used for DFT, band-structure, DOS and TOPOND bond-property calculationsp002 / 7859 · Experimental Section - Computation Procedures
compressed microcrystalline pellet of compound 1research_0854__mat__mof_1_nacu3_mtz4Pellet · Target Sample · Pristine Frameworkmicrocrystalline sample compressed to 1.19 mm thickness and 2.5 mm diameter under 0.1 GPa; two sides connected to gold wires with gold paste1.19 mmp002 / 7859 · Experimental Section - Materials and Instruments
yellow block single crystals of compound 1research_0854__mat__mof_1_nacu3_mtz4Single Crystal · Target Sample · Pristine Frameworkas-synthesised single crystals filtered from mother liquor and dried in airp002 / 7859 · Experimental Section - Synthesis of NaCu3(mtz)4 (1)