Miyao K., Funabiki A., Takahashi K. et al. · New Journal of Chemistry · 2014 · 739-743
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.
The iodine-loaded salt Cu(TCNQ)I4 has valence formulation [Cu+ I- (TCNQ0)](I2)1.5 rather than a triiodide-containing alkali-TCNQ-like structure.
Caveat: Local structure is proposed/schematic; the remaining iodine molecules are described as probably located between units.
p003-p004 / article pages 741-742 · Electronic state; Conclusion · Fig. 7 · Linked to 3 structured results
Nonporous Cu(TCNQ) reversibly absorbs iodine through solid-state grinding or liquid-phase reaction to form Cu(TCNQ)I4 and can release iodine to regenerate Cu(TCNQ) via Cu(TCNQ)I.
Caveat: Regenerated products contain amorphous Cu(TCNQ) and CuI impurity; repeated cycling decreases crystallinity.
p004 / article page 742 · Conclusion · Linked to 5 structured results
Affinity between I- and Cu+ and Cu-I bond formation are central to the Cu(TCNQ) iodine absorption mechanism, distinguishing it from alkali-TCNQ salts.
Caveat: Redox-potential comparisons are cited from literature; local structure is proposed.
p004 / article page 742 · Electronic state; Conclusion · Fig. 7 · Linked to 3 structured results
Liquid-phase iodine absorption proceeds by surface reaction and phase separation, whereas grinding induces diffusion and homogeneous iodine reaction.
Caveat: This interpretation is based on XRD/TG evidence and mechanistic reasoning rather than direct diffusion imaging.
p003 / article page 741 · Iodine absorption by liquid-phase reaction · Fig. S6 · Linked to 2 structured results
Phase II Cu(TCNQ) absorbs iodine much more slowly than phase I in liquid-phase reaction because it is more thermodynamically stable, while solid-state grinding is efficient for both phases due to mechanochemical effects.
Caveat: The phase-II liquid-phase result is reported as approximate n about 0.7 after two months; no full kinetic curve is tabulated.
p003 / article page 741 · Iodine absorption by liquid-phase reaction · Linked to 3 structured results
Iodine absorption decreases Cu(TCNQ) conductivity because TCNQ changes from anionic in Cu(TCNQ) to neutral in Cu(TCNQ)I4.
Caveat: The phase I Cu(TCNQ) comparator value is cited from prior work, not remeasured numerically in the assigned paper.
p004 / article page 742 · Electronic state; Conclusion · Linked to 3 structured results
Cu(TCNQ)In (n = 3.7) remains semiconducting, with room-temperature conductivity 3.1 x 10-3 S cm-1 and activation energy 0.1 eV.
Caveat: No error bars or fitting uncertainty are reported for the activation energy.
p004 / article page 742 · Electronic state · Fig. S8 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu(TCNQ) | Cu(TCNQ); TCNQ = 7,7',8,8'-tetracyanoquinodimethaneCu(I) · TCNQ radical anion | unknown · PristineNonporous coordination polymer; two polymorphs, phase I and phase II. | p001 / article page 739 · Introduction · Fig. 1 |
| Cu(TCNQ)I iodine-desorption intermediate | Cu(TCNQ)I; described as [CuI(TCNQ)]Cu(I) with iodide · TCNQ | unknown · PristineStable intermediate formed during iodine desorption. | p002 / article page 740 · Results and discussion · Fig. 2 and Fig. 4 |
| Cu(TCNQ)I2 / [CuI(TCNQ)](I2)0.5 | Cu(TCNQ)I2; [CuI(TCNQ)](I2)0.5Cu(I) with iodide · TCNQ | unknown · PristinePartially iodine-loaded material formed by stepwise solid-state iodine addition or milling of liquid-phase product. | p002-p003 / article pages 740-741 · Results and discussion · Fig. 5; Fig. S4; Fig. S6 |
| iodine-loaded Cu(TCNQ)I4 | Cu(TCNQ)I4; represented as [Cu+ I- (TCNQ0)](I2)1.5Cu(I) coordinated by iodide and neutral TCNQ · neutral TCNQ | unknown · PristineIodine-containing salt; local model has Cu+I-, neutral TCNQ and iodine between coordination networks. | p003-p004 / article pages 741-742 · Electronic state; Conclusion · Fig. 7 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| homogeneous [CuI(TCNQ)](I2)0.5 after ball-milling liquid-phase n = 2.1 productresearch_0366__mat__mat_cutcq_i2 | Powder · Target Sample · Guest Loaded | ball-milled liquid-phase n = 2.1 product | p003 / article page 741 · Iodine absorption by liquid-phase reaction · Fig. S6 |
| Cu(TCNQ)I2 from phase I by stepwise solid-state iodine additionresearch_0366__mat__mat_cutcq_i2 | Powder · Target Sample · Guest Loaded | stepwise solid-state iodine-loaded powder, n = 2 | p002 / article page 740 · Results and discussion · Fig. 5; Fig. S4 |
| Cu(TCNQ)I2 from phase II by stepwise solid-state iodine additionresearch_0366__mat__mat_cutcq_i2 | Powder · Target Sample · Guest Loaded | stepwise solid-state iodine-loaded powder, n = 2 | p002 / article page 740 · Results and discussion · Fig. S4b |
| Cu(TCNQ)I4 from grinding CuI, TCNQ, and iodineresearch_0366__mat__mat_cutcq_i4 | Powder · Target Sample · Guest Loaded | solid-state grinding product from CuI, TCNQ and I2 | p003 / article page 741 · Results and discussion |
| Cu(TCNQ)I4 from phase I by liquid-phase iodine absorptionresearch_0366__mat__mat_cutcq_i4 | Powder · Target Sample · Guest Loaded | black powder after immersion in hexane iodine solution | p003 / article page 741 · Iodine absorption by liquid-phase reaction · Fig. 6 |
| Cu(TCNQ)I4 from phase I by solid-state grindingresearch_0366__mat__mat_cutcq_i4 | Powder · Target Sample · Guest Loaded | black powder after ball-milling Cu(TCNQ) phase I with iodine | p001-p002 / article pages 739-740 · Iodine absorption by solid-state reaction · Fig. 3a |
| Cu(TCNQ)I4 from phase II by solid-state grindingresearch_0366__mat__mat_cutcq_i4 | Powder · Target Sample · Guest Loaded | black powder after ball-milling Cu(TCNQ) phase II with iodine | p001-p002 / article pages 739-740 · Iodine absorption by solid-state reaction · Fig. 3b |
| Cu(TCNQ)I produced by iodine desorption in hexaneresearch_0366__mat__mat_cutcq_i | Powder · Target Sample · Guest Loaded | Cu(TCNQ)I4 immersed in hexane for 40 days | p002 / article page 740 · Results and discussion · Fig. 2 |
| Cu(TCNQ)In n = 2.1 liquid-phase short-reaction mixtureresearch_0366__mat__mat_cutcq_i4 | Powder · Target Sample · Composite | short liquid-phase iodine absorption product | p003 / article page 741 · Iodine absorption by liquid-phase reaction · Fig. S6 |
| partially iodine-loaded phase II Cu(TCNQ), n about 0.7research_0366__mat__mat_cutcq_i4 | Powder · Target Sample · Guest Loaded | phase II powder after two months in hexane iodine solution | p003 / article page 741 · Iodine absorption by liquid-phase reaction |
| Cu(TCNQ)In (n = 3.7) compaction pellet from liquid-phase reactionresearch_0366__mat__mat_cutcq_i4 | Pellet · Target Sample · Guest Loaded | compaction pellet with carbon paste electrodes | p004 / article page 742 · Electronic state · Fig. S8 |
| Cu(TCNQ) phase II powderresearch_0366__mat__mat_cutcq | Powder · Target Sample · Pristine Framework | polycrystalline powder; phase II polymorph | p001 / article page 739 · Introduction |
| Cu(TCNQ) phase I powderresearch_0366__mat__mat_cutcq | Powder · Target Sample · Pristine Framework | polycrystalline dark-blue powder; phase I polymorph | p001 / article page 739 · Results and discussion · Fig. 1 |
| regenerated phase II Cu(TCNQ) after iodine desorption by annealingresearch_0366__mat__mat_cutcq | Powder · Target Sample · Pristine Framework | annealed iodine-containing salt, 200 C, 1.5 h, vacuum | p002 / article page 740 · Results and discussion · Fig. 3 |
| regenerated phase I Cu(TCNQ) after iodine desorption by annealingresearch_0366__mat__mat_cutcq | Powder · Target Sample · Pristine Framework | annealed iodine-containing salt, 200 C, 1.5 h, vacuum | p002-p003 / article pages 740-741 · Results and discussion · Fig. 3; Fig. 6 |