Liu K., Xu Y., Tian X. et al. · npj Flexible Electronics · 2025 · 67
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.
PCA/regression/kNN processing of Zn-TCPP-6 sensor signals enables NH3 concentration prediction and six-gas classification, supporting non-invasive breath-analysis applications.
Caveat: The breath/clinical validation is preliminary and based on only four HE patients.
p006-p007 · Gas type and concentration prediction; Potential application · Figure 6; Figure 7 · Linked to 4 structured results
Zn-TCPP-6 provides room-temperature NH3 detection with high response, 36 ppb detection limit and selectivity coefficient 5.12 against tested organic interferents.
Caveat: Selectivity was tested against selected reducing gases; unassessed breath components such as CO2, water vapour and isoprene may contribute under real-world conditions.
p006 · Potential application of Zn-TCPP-6 gas sensor · Figure 7 · Linked to 5 structured results
High humidity above 70% RH reduces Zn-TCPP sensor resistance and may produce false positives or inaccurate detection limits unless water vapour is blocked.
p004 · Performance of the Zn-TCPP-6 sensor · Figure 4a · Linked to 1 structured result
Stacking Zn-TCPP on porous biofabric enables a flexible composite sensor with controllable thickness, broad substrate adaptability and mechanical bending tolerance.
Caveat: Very high humidity causes substantial background response unless encapsulation is added.
p004 · Performance of the Zn-TCPP-6 sensor · Figure 4 · Linked to 6 structured results
Zn-TCPP forms a crystalline lamellar TCPP-based MOF with Zn2(COO)4 paddlewheel units, porphyrin Zn-N coordination and sharper lattice patterns than Zn-HHTP, supporting efficient ion transport.
Caveat: No CIF or full crystallographic refinement was supplied in the assigned documents.
p002 · Characteristics of Zn-HHTP and Zn-TCPP · Figure 2 · Linked to 4 structured results
The Zn-TCPP IC-MOF sensor outperforms EC-MOF HHTP analogues and Ni/Cu TCPP analogues for NH3 because open Zn2+ porphyrin sites provide stronger NH3 interaction.
Caveat: Quantitative ion-transport analysis is stated as future work.
p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a; Figure 5 · Linked to 6 structured results
NH3 sensing in Zn-TCPP is attributed to Zn/N active sites and Zn2+-NH3 interaction that increases mobile ionic carriers, rather than C or O framework sites.
Caveat: Direct quantitative ion conductivity or carrier mobility measurements were not reported.
p004-p005 · Sensing mechanism of Zn-TCPP · Figure 5; Figure S6 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu-HHTP electrically conductive MOFBrowse family: Cu₃(HHTP)₂ / Cu–HHTP | Cu-HHTPCu2+ coordinated with HHTP ligands · HHTP | 2D · PristineM-HHTP EC-MOF analogue prepared by LBL-LPE. | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Cu-TCPP ionically conductive MOF | Cu-TCPPCu2+ coordinated to TCPP porphyrin nitrogen/carboxylate sites · TCPP | 2D · PristineM-TCPP IC-MOF analogue prepared by LBL-LPE. | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Ni-HHTP electrically conductive MOFBrowse family: Ni₃(HHTP)₂ / Ni–HHTP | Ni-HHTPNi2+ coordinated with HHTP ligands · HHTP | 2D · PristineM-HHTP EC-MOF analogue prepared by LBL-LPE. | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Ni-TCPP ionically conductive MOF | Ni-TCPPNi2+ coordinated to TCPP porphyrin nitrogen/carboxylate sites · TCPP | 2D · PristineM-TCPP IC-MOF analogue prepared by LBL-LPE. | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Zn-HHTP electrically conductive MOFBrowse family: Zn–HHTP family | Zn-HHTPZn2+ coordinated with HHTP ligands · 2,3,6,7,10,11-hexahydroxytriphenylene hydrate (HHTP) | 2D · PristineGraphene-analogous porous honeycomb AB-stacked M-HHTP framework with ca. 3.3 A interlayer spacing. | p002 · Preparation and structures of M-HHTP and M-TCPP · Figure 1b |
| Zn-TCPP ionically conductive MOF | Zn-TCPP; zinc paddlewheel metalloporphyrin frameworkZn2+ nodes; Zn2(COO)4 paddlewheel units and Zn coordinated to porphyrin nitrogen atoms · 4,4',4'',4'''-(Porphine-5,10,15,20-tetrayl)tetrakis(benzoic acid) (TCPP) | 2D · PristineLamellar AB sliding-parallel stacked porphyrin MOF with ca. 18 A interlayer spacing; assigned as IC-MOF in the paper. | p002 · Preparation and structures of M-HHTP and M-TCPP · Figure 1b |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu-HHTP-6 sensor on alginate fabricresearch_0843__mat__cu_hhtp | Thin Film · Pristine Control · Composite | EC-MOF comparison sensor.alginate fibre fabric · 6 LBL-LPE layers | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Cu-TCPP-6 sensor on alginate fabricresearch_0843__mat__cu_tcpp | Thin Film · Pristine Control · Composite | IC-MOF metal-node comparison sensor.alginate fibre fabric · 6 LBL-LPE layers | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Ni-HHTP-6 sensor on alginate fabricresearch_0843__mat__ni_hhtp | Thin Film · Pristine Control · Composite | EC-MOF comparison sensor.alginate fibre fabric · 6 LBL-LPE layers | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Ni-TCPP-6 sensor on alginate fabricresearch_0843__mat__ni_tcpp | Thin Film · Pristine Control · Composite | IC-MOF metal-node comparison sensor.alginate fibre fabric · 6 LBL-LPE layers | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Zn-HHTP-6 sensor on alginate fabricresearch_0843__mat__zn_hhtp | Thin Film · Pristine Control · Composite | EC-MOF comparison sensor.alginate fibre fabric · 6 LBL-LPE layers | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3a |
| Zn-HHTP computational NH3 adsorption modelresearch_0843__mat__zn_hhtp | Model · Model System · Model | Optimised NH3 adsorption configuration. | p005 · Sensing mechanism of Zn-TCPP · Figure 5c |
| Hydrothermal Zn-HHTP powder thin filmresearch_0843__mat__zn_hhtp | Thin Film · Pristine Control · Pristine Framework | Zn-HHTP powder made hydrothermally, dispersed in ethanol, then deposited as a film.finger electrodes for gas sensor testing | p008 · Fabrication of Zn-TCPP and Zn-HHTP powder thin film · Figure 3b |
| Zn-TCPP layer-thickness variants on alginate fabricresearch_0843__mat__zn_tcpp | Thin Film · Pristine Control · Composite | Layer-number controls for Zn-TCPP gas sensing.alginate fibre fabric · 2, 4, and 8 LBL-LPE layers; total thicknesses 70, 79, and 100 um | p003 · Performance comparison of M-HHTP and M-TCPP · Figure 3d |
| Zn-TCPP-6 sensor on alginate fabricresearch_0843__mat__zn_tcpp | Thin Film · Target Sample · Composite | LBL-LPE Zn-TCPP film on biofabric; screen printed with Ag electrodes for gas sensingalginate fibre fabric with Ag fork-finger electrodes for sensing tests · 6 LBL-LPE layers; total composite film thickness 91 um; MOF deposition increment ca. 31 um relative to 60 um alginate substrate | p002 · Preparation and structures of M-HHTP and M-TCPP · Figure 1a |
| Zn-TCPP-6 sensor on cellulose fabricresearch_0843__mat__zn_tcpp | Thin Film · Composite Sample · Composite | Substrate-adaptability sensor prepared by LBL-LPE.cellulose fabric · 6 layers | p004 · Performance of the Zn-TCPP-6 sensor · Figure 4d |
| Zn-TCPP-6 sensor on Dacron fabricresearch_0843__mat__zn_tcpp | Thin Film · Composite Sample · Composite | Substrate-adaptability sensor prepared by LBL-LPE.Dacron fabric · 6 layers | p004 · Performance of the Zn-TCPP-6 sensor · Figure 4d |
| Zn-TCPP computational NH3 adsorption modelresearch_0843__mat__zn_tcpp | Model · Model System · Model | Optimised NH3 adsorption configuration. | p005 · Sensing mechanism of Zn-TCPP · Figure 5d |
| Hydrothermal Zn-TCPP powder thin filmresearch_0843__mat__zn_tcpp | Thin Film · Pristine Control · Pristine Framework | Zn-TCPP powder made hydrothermally, dispersed in ethanol, then deposited as a film.finger electrodes for gas sensor testing | p008 · Fabrication of Zn-TCPP and Zn-HHTP powder thin film · Figure 3b |