Vapor-Induced Superionic Conduction of Magnesium Ions in a Metal-Organic Framework

3materials

8samples

3synthesis routes

15measurements

48results

6claims and caveats

Evidence map

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

Electrical Transport6 measurements19 results →Diffraction Structure3 measurements11 results →Porosity2 measurements9 results →Electrochemistry Application1 measurement7 results →Computational Modelling1 measurement1 result →Other1 measurement1 result →Spectroscopy1 measurement0 results →

Author interpretations and caveats

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

CaveatSupport assessment: Medium

Mg(TFSI)2 outside the MOF is unlikely to be responsible for the observed vapour-induced conduction because the salt control did not show the same drastic enhancement and some vapour conditions could not be measured due to deliquescence.

Caveat: Control values are in SI Figure S8; deliquescence prevented direct salt-control measurements under MeOH, EtOH, and MeCN.

p005 / article p.21128 · Ionic Conductivity and Mg2+ Transport · Figure S8 · Linked to 3 structured results

Phase AssignmentSupport assessment: High

Mg(TFSI)2 salt is incorporated inside Mg-MOF-74 pores up to about x = 0.15; x = 0.17 exceeds the pore capacity and gives extra salt peaks.

Caveat: Detailed TGA/XRPD supporting figures are in available SI, but main-text XRPD and BET statements are clear.

p003 / article p.21126 · Results and Discussion - Preparation of Mg-Included MOF · Figures 1b and 2 · Linked to 3 structured results

Structure Property LinkSupport assessment: Medium

The vapour-induced conductivity enhancement is linked to adsorption of suitably small guest molecules, which likely coordinate Mg2+ and increase carrier mobility inside the size-limited pores.

Caveat: The authors state other contributions may also assist transport; exact pore structures of adsorbed species were not solved due to disorder.

p006 / article p.21129 · Adsorption Behavior for the Guest Vapors · Figure 6 · Linked to 4 structured results

Transport MechanismSupport assessment: High

The vapour-induced ionic conduction is predominantly associated with Mg2+ transport, supported by a Mg2+ transport number of 0.47 under MeCN vapour.

Caveat: Measured under MeCN vapour at 60 deg C, not under the highest-conductivity MeOH condition.

p005 / article p.21128 · Ionic Conductivity and Mg2+ Transport · Figure 4 · Linked to 3 structured results

Transport MechanismSupport assessment: Medium

The similar conductivities under protic EtOH and aprotic MeCN, plus the low vapour conductivity of x = 0 Mg-MOF-74, argue that proton conduction is not the dominant source of the vapour-induced enhancement.

Caveat: Direct proton-blocking or isotope experiments are not reported in the main text; the claim is inferential.

p004 / article p.21127 · Ionic Conductivity and Mg2+ Transport · Figure 3 and Figure S6 · Linked to 3 structured results

Transport MechanismSupport assessment: High

Organic vapour induces superionic Mg-ion conduction in Mg-MOF-74 superset {Mg(TFSI)2}0.15, reaching 2.6 x 10-4 S cm-1 at 25 deg C under MeOH vapour.

Caveat: Best conductivity is reported in text; complete Nyquist/Arrhenius details and comparison table are in available SI.

p001 / article p.21124 · Abstract · Linked to 3 structured results

Material identities

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

Material	Composition	Structure context	Source
Mg-MOF-74Browse family: Mg₂(DOBDC) / Mg–MOF-74 / CPO-27-Mg	[Mg2(dobdc)]inf / Mg2(dobdc)Mg2+ nodes · dobdc4- = 2,5-dioxido-1,4-benzenedicarboxylate	3D · PristinePorous Mg-MOF-74 mother framework with one-dimensional pores; XRPD patterns assigned to Mg-MOF-74.	p002 / article p.21125 · Materials and Methods
Mg-MOF-74 loaded with Mg(TFSI)2	Mg2(dobdc) superset {(MgTFSI)2}x; x = 0, 0.07, 0.13, 0.15, 0.17Mg2+ framework nodes plus included Mg2+ salt species · dobdc4- framework linker; TFSI- counteranion in included salt	3D · PristineMg-MOF-74 framework retained after salt loading for x <= 0.15; x = 0.17 shows additional Mg(TFSI)2 salt peaks, indicating exceeded pore capacity.	p003 / article p.21126 · Results and Discussion - Preparation of Mg-Included MOF · Figure 1b
Mg(TFSI)2 control salt	Mg(TFSI)2; synthesized as Mg(TFSI)2.8H2OMg2+ salt · none	0D · Model SystemMolecular magnesium bis(trifluoromethanesulfonyl)imide salt control, not a MOF.	p002 / article p.21125 · Materials and Methods

Sample register

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

Show 8 sample records

Sample	Form and role	Processing and geometry	Source
Mg-MOF-74 parent powderresearch_0343__mat__mat_mg_mof_74	Powder · Pristine Control · Pristine Framework	Solvothermally prepared yellow powder, washed by reflux in DMF and MeOH, dried at 250 deg C under vacuum.	p002 / article p.21125 · Materials and Methods
Mg-MOF-74 superset {Mg(TFSI)2}x loading seriesresearch_0343__mat__mat_mg_mof_74_tfsi	Powder · Paper Level Unspecified · Guest Loaded	Comparative series x = 0, 0.07, 0.13, 0.15, and 0.17 prepared by varying Mg(TFSI)2.8H2O amount in ethanol.	p002 / article p.21125 · Materials and Methods · Figure 1
Mg-MOF-74 superset {Mg(TFSI)2}0.07research_0343__mat__mat_mg_mof_74_tfsi	Powder · Target Sample · Guest Loaded	Mg(TFSI)2 included in Mg-MOF-74 pores by slow ethanol evaporation; dehydrated before adsorption/conductivity measurements.	p002 / article p.21125 · Materials and Methods · Figure 1
Mg-MOF-74 superset {Mg(TFSI)2}0.13research_0343__mat__mat_mg_mof_74_tfsi	Powder · Target Sample · Guest Loaded	Mg(TFSI)2 included in Mg-MOF-74 pores by slow ethanol evaporation; dehydrated before adsorption/conductivity measurements.	p002 / article p.21125 · Materials and Methods · Figure 1
Mg-MOF-74 superset {Mg(TFSI)2}0.15research_0343__mat__mat_mg_mof_74_tfsi	Powder · Target Sample · Guest Loaded	Mg(TFSI)2 included in Mg-MOF-74 pores by slow ethanol evaporation; dehydrated at 130 deg C before conductivity, adsorption, and transport-number tests.conductivity pellets around 0.5 mm thick	p003 / article p.21126 · Ionic Conductivity Measurements · Figure 3
Mg-MOF-74 superset {Mg(TFSI)2}0.17research_0343__mat__mat_mg_mof_74_tfsi	Powder · Target Sample · Guest Loaded	Mg(TFSI)2 included by slow ethanol evaporation; highest nominal salt loading tested.	p003 / article p.21126 · Results and Discussion - Preparation of Mg-Included MOF · Figure 1b
Mg-MOF-74 superset {Mg(TFSI)2}x, x = 0 blankresearch_0343__mat__mat_mg_mof_74	Powder · Pristine Control · Pristine Framework	Mg-MOF-74 soaked/heated in ethanol solution with 0 mg Mg(TFSI)2.8H2O, then dried/dehydrated before measurements.	p002 / article p.21125 · Materials and Methods · Figure 1
Mg(TFSI)2 salt controlresearch_0343__mat__mat_mg_tfsi2_salt_control	Powder · Model System · Model	Mg(TFSI)2.8H2O synthesized from Mg powder and HTFSI, then dried under vacuum; used as non-MOF control in conductivity tests.	p005 / article p.21128 · Ionic Conductivity and Mg2+ Transport · Figure S8