Primary studyCore evidenceTransport Physics

Bi-porous metal-organic framework with hydrophilic and hydrophobic channels: Selective gas sorption and reversible iodine uptake studies

Chaudhari A.K., Mukherjee S., Nagarkar S.S. et al. · CrystEngComm · 2013 · 9465-9471

1materials
3samples
3synthesis routes
9measurements
29results
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: High

Iodine uptake is reversible and iodine can be removed from the framework in dry ethanol within about 30 minutes.

Caveat: The release result is monitored by colour change and UV-vis rather than direct post-release iodine quantification.

p005 / 9469 · Results and discussion · Fig. 5c; Fig. 8 · Linked to 1 structured result

Phase AssignmentSupport assessment: High

Compound 1 is a 3D Cd(II) bi-porous MOF with separate hydrophilic and hydrophobic channels.

Caveat: Hydrophilic channel dimensions are discussed as excluding cations because cations do not form a continuous channel.

p002-p003 / 9466-9467 · Results and discussion · Fig. 1; Fig. 2 · Linked to 3 structured results

Phase AssignmentSupport assessment: High

PXRD and Raman comparisons indicate that the framework remains unaltered after iodine inclusion.

Caveat: SCXRD of activated 1' failed; phase retention is based on powder diffraction and Raman comparisons.

p004 / 9468 · Results and discussion · Fig. 7 · Linked to 2 structured results

Structure Property LinkSupport assessment: Medium

Selective CO2 uptake by activated 1' is attributed to electrostatic interactions with DMA cations and carboxylate oxygen rather than size exclusion.

Caveat: The paper reports adsorption selectivity qualitatively; no IAST selectivity values are provided.

p004 / 9468 · Results and discussion · Fig. 4; Fig. S6 · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

Iodine inclusion increases DC conductivity by about 76-fold, which the authors attribute to ordered iodine molecules facilitating n to sigma* charge transfer.

Caveat: Conductivity method is inconsistently described as two-probe in main methods and four-probe in SI.

p004 / 9468 · Results and discussion · Fig. S10 · Linked to 3 structured results

Material identities

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

MaterialCompositionStructure contextSource
{[(Me2NH2)2].[Cd3(5-tbip)4].2DMF}n (compound 1)C58H78Cd3N4O18Cd(II) centres; Cd1/Cd3 seven-coordinate, Cd2/Cd4 six-coordinate in the reported framework · 5-tert-butylisophthalate (5-tbip)3D · PristineTriclinic P-1 3D anionic bi-porous framework with hydrophilic and hydrophobic channels.p002 / 9466 · Results and discussion · Table 1; Fig. 1

Sample register

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

Show 3 sample records
SampleForm and roleProcessing and geometrySource
guest-free activated compound 1'research_0554__mat__cd_tbip_mof_1Pellet · Pristine Control · Pristine FrameworkMethanol-exchanged and vacuum-heated guest-free framework; pressed pellet for conductivity.p003 / 9467 · Results and discussion · Fig. 4
as-synthesised compound 1research_0554__mat__cd_tbip_mof_1Single Crystal · Target Sample · Pristine FrameworkSolvothermal product containing DMF guest molecules and extra-framework dimethylammonium cations.p005 / 9469 · Synthesis
iodine-loaded compound 1' subset nI2research_0554__mat__cd_tbip_mof_1Pellet · Target Sample · Guest LoadedActivated framework loaded with iodine from cyclohexane solution, filtered, washed, air-dried, and pressed as a pellet for conductivity.p011 · Details of Iodine inclusion study and electrical conductivity measurement · Fig. S10