Primary studyPeripheral evidenceSensor

Ag-DNA@ZIF-8 membrane: A proton conductive photoswitch

Li P., Li Z., Guo Y. et al. · Applied Materials Today · 2020 · 100761

3materials
6samples
5synthesis routes
19measurements
92results
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

The light-controlled conductivity switch is reversible because water molecules rebind to the hydrogen-bonded network after light removal.

Caveat: Cycle data are graphical; exact absolute conductivities are not tabulated in the supplied documents.

4 · Results and discussion · Fig. 3b,c · Linked to 3 structured results

Phase AssignmentSupport assessment: High

Ag and ssDNA co-modification does not disrupt the ZIF-8 crystalline membrane phase.

Caveat: XRD evidence is qualitative in the text; detailed peak positions are graphical rather than tabulated.

3 · Results and discussion · Fig. 1 · Linked to 3 structured results

Structure Property LinkSupport assessment: Medium

The 20 mM Ag-DNA@ZIF-8 sample provides the best balance of high off/on ratio and recovery performance among the Ag loading series.

Caveat: The main-text phrase "Ag/Zn atomic ratio of 0.27" appears to use the Table S1 weight-ratio value; Table S1 gives atomic Ag/Zn = 0.16 for 20 mM.

4 · Results and discussion · Fig. 5 · Linked to 4 structured results

Synthesis MechanismSupport assessment: High

ssDNA templates/assists Ag ion adsorption and in situ reduction to Ag nanoparticles inside the ZIF-8 membrane precursor.

Caveat: Main text contains an apparent sample-label inconsistency for Fig. S7 XPS, while the SI caption identifies 20 mM Ag-DNA@ZIF-8.

3 · Results and discussion · Fig. S1, Fig. S2 · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

Proton transport in Ag-DNA@ZIF-8 follows a Grotthuss mechanism through the hydrogen-bond network between ssDNA groups and water molecules.

Caveat: Mechanistic assignment is inferred by authors mainly from activation energy and prior understanding of DNA@ZIF-8.

4 · Results and discussion · Fig. 4 · Linked to 1 structured result

Transport MechanismSupport assessment: High

Illumination triggers Ag nanoparticle LSPR heating, disrupts local water-mediated hydrogen bonding, and sharply lowers proton conductivity.

Caveat: Local temperature increase is shown qualitatively by infrared photos; no numeric thermal profile was available.

4 · Results and discussion · Fig. 3e · Linked to 4 structured results

Material identities

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

MaterialCompositionStructure contextSource
Ag-DNA@ZIF-8 membraneBrowse family: ZIF-8 / Zn(mIm)₂Ag nanoparticles/ssDNA co-modified ZIF-8Zn; Ag0 nanoparticles · 2-methylimidazolate; ssDNA guest/thread3D · CompositeCrystalline ZIF-8 membrane co-modified with Ag nanoparticles and ssDNA1 · Abstract
DNA@ZIF-8 membraneBrowse family: ZIF-8 / Zn(mIm)₂ssDNA-threaded ZIF-8Zn · 2-methylimidazolate; ssDNA guest/thread3D · CompositeZIF-8 membrane containing ssDNA/water hydrogen-bond network1 · Introduction
ZIF-8Browse family: ZIF-8 / Zn(mIm)₂Zn(2-methylimidazolate)2Zn · 2-methylimidazolate (Hmim precursor)3D · PristineZIF-8 crystalline phase1 · Introduction

Sample register

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

Show 6 sample records
SampleForm and roleProcessing and geometrySource
1 mM Ag-DNA@ZIF-8research_0873__mat__mat_ag_dna_zif8Thin Film · Target Sample · CompositeAg-DNA/ZHNs film converted to ZIF-8 membrane after 1 mM AgNO3 treatmentglass substrate during synthesis; Ag electrodes for impedance testing2 · Results and discussion
20 mM Ag-DNA@ZIF-8research_0873__mat__mat_ag_dna_zif8Thin Film · Target Sample · CompositeAg-DNA/ZHNs film converted to ZIF-8 membrane after 20 mM AgNO3 treatmentglass substrate during synthesis; Ag electrodes for impedance testing · ~1.6 um3 · Results and discussion · Fig. 1b,c
50 mM Ag-DNA@ZIF-8research_0873__mat__mat_ag_dna_zif8Thin Film · Target Sample · CompositeAg-DNA/ZHNs film converted to ZIF-8 membrane after 50 mM AgNO3 treatmentglass substrate during synthesis; Ag electrodes for impedance testing2 · Results and discussion
5 mM Ag-DNA@ZIF-8research_0873__mat__mat_ag_dna_zif8Thin Film · Target Sample · CompositeAg-DNA/ZHNs film converted to ZIF-8 membrane after 5 mM AgNO3 treatmentglass substrate during synthesis; Ag electrodes for impedance testing5 · Results and discussion · Fig. 3b
DNA@ZIF-8 membraneresearch_0873__mat__mat_dna_zif8Thin Film · Pristine Control · Guest LoadedAg-free DNA-threaded ZIF-8 control used for proton conductivity and light-response comparison5 · Results and discussion · Fig. 3a,d
ZIF-8 referenceresearch_0873__mat__mat_zif8Thin Film · Composite Component · Pristine FrameworkReference ZIF-8 pattern used in XRD comparison3 · Results and discussion · Fig. 1d