Geng Y., Wang X.-J., Chen B. et al. · Chemistry - A European Journal · 2009 · 5124-5129
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 amorphous nature of the infinite coordination polymers prevents a detailed understanding of structural connectivity and the metal coordination environment.
5126 · Results and Discussion · Figures 1-2 · Linked to 1 structured result
Changing the metal ion from Pb2+ to Zn2+ transforms compound-1 coordination-polymer morphology from one-dimensional wirelike microstructures to spherical particles.
Caveat: Detailed coordination environment is not resolved because the polymers are amorphous.
5126 · Results and Discussion · Figures 1-2 · Linked to 2 structured results
Stronger pyridyl-metal coordination in compound 1 is proposed as a prerequisite for uniform coordination-polymer morphology; weaker Pb2+ binding by compound 3 gives micro-nest-like structures.
Caveat: Compound 3 evidence is a mechanistic control rather than a conductive target material.
S12-S14 · Supporting Information · Figures S10-S12 · Linked to 2 structured results
Coordination of ligand 1 to Pb2+ or Zn2+ greatly increases conductivity relative to ligand-only or phenyl analogue aggregates.
Caveat: Control conductivities are upper bounds from no-signal measurements rather than direct finite values.
5127 · Results and Discussion · Linked to 3 structured results
Intermolecular pi-pi stacking and TTF framework overlap are proposed to support charge transport in the neutral coordination polymers.
Caveat: The article states the origin of conductivity is not totally clear; XRD/ESR support is indirect.
5127-5128 · Results and Discussion · Figure S15 and Figure 4 · Linked to 3 structured results
The neutral Pb- and Zn-linked TTF coordination polymers are semiconducting at room temperature and conductive without external oxidation, doping, or manipulation.
Caveat: The SI curve is graphical and no activation energy is reported.
S15 · Supporting Information · Figure S13 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Compound 2 phenyl-substituted TTF control aggregates | 4,4'(5')-[bis-(4-phenylethenyl)]tetrathiafulvalene aggregate; exact aggregate formula not reportednone or metal salts in control experiments; coordination polymer not formed · 4,4'(5')-[bis-(4-phenylethenyl)]tetrathiafulvalene (compound 2) | 0D · Model SystemPhenyl-substituted TTF control lacking pyridyl coordination sites; forms needlelike solids rather than coordination polymers. | 5126 · Results and Discussion · Figure S9 referenced |
| Compound 3 Pb2+ micro-nest control | compound 3 with Pb2+; exact aggregate formula not reportedPb2+ in binding/morphology experiment · 4,4'(5')-[bis-(4-pyridineethynyl)]tetrathiafulvalene (compound 3) | unknown · Model SystemTriple-bond pyridyl TTF analogue binds Pb2+ more weakly and gives micro-nest-like structures rather than microwires. | 5126-5127 · Results and Discussion · Figure S10 referenced |
| Compound 1 ligand aggregates without metal ions | C20H14N2S4 ligand 1 aggregate; exact aggregate formula not reportednone · 4,4'(5')-[bis-(4-pyridineethenyl)]tetrathiafulvalene (compound 1) | 0D · Model SystemNeedlelike ligand-only aggregate used as non-coordination control; no four-probe signal detected. | 5127 · Results and Discussion |
| compound 1 solution complexes with Pb2+ or Zn2+ | compound 1 with M(ClO4)2 in solution, M = Pb2+ or Zn2+; isolated formula not applicablePb2+ or Zn2+ in solution binding experiments · 4,4'(5')-[bis-(4-pyridineethenyl)]tetrathiafulvalene (compound 1) | 0D · Model SystemSolution model complexes used to establish 1:1 ligand/metal binding before solid coordination-polymer formation. | 5125 · Results and Discussion · Figures S1-S5 |
| Pb2+-linked TTF coordination polymer microwires | [1.Pb(ClO4)2].7H2O by elemental-analysis stoichiometry; 1 = bis-(4-pyridineethenyl)tetrathiafulvalenePb2+ from Pb(ClO4)2 · 4,4'(5')-[bis-(4-pyridineethenyl)]tetrathiafulvalene (compound 1) | 1D · PristineInfinite neutral TTF coordination polymer formed by pyridyl-metal coordination; amorphous by SAED; wirelike microstructure; 1:1 ligand/Pb(ClO4)2 composition from elemental analysis. | 5126 · Results and Discussion · Figure 1 |
| Zn2+-linked TTF coordination polymer spherical particles | [1.Zn(ClO4)2].7H2O by elemental-analysis stoichiometry; 1 = bis-(4-pyridineethenyl)tetrathiafulvaleneZn2+ from Zn(ClO4)2 · 4,4'(5')-[bis-(4-pyridineethenyl)]tetrathiafulvalene (compound 1) | 1D · PristineNeutral TTF coordination polymer produced by Zn2+ coordination, giving spherical particles rather than microwires; composition supported by EDX and FT-IR. | 5126 · Results and Discussion · Figure 2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| compound 2 needlelike control aggregatesresearch_0575__mat__mat_compound2_control | Pellet · Pristine Control · Model | Needlelike aggregates of compound 2, in absence and presence of metal ions, tested by four-probe PPMS-9.10 x 2.5 x 0.1 mm aggregate used for control I-V | 5127-5128 · Results and Discussion / Experimental Section · Figure S9 referenced |
| compound 3 plus Pb2+ micro-nest-like structuresresearch_0575__mat__mat_compound3_pb_control | Powder · Model System · Model | Compound 3 was examined with Pb2+ as a typical metal-ion binding and morphology control. | 5126-5127 · Results and Discussion · Figure S10 referenced |
| needlelike aggregates of compound 1 without metal ionsresearch_0575__mat__mat_ligand1_aggregate | Pellet · Pristine Control · Model | Aggregated form of compound 1 without metal ions, prepared under control conditions and tested by four-probe PPMS-9.10 x 3 x 0.1 mm aggregate used for control I-V | 5127-5128 · Results and Discussion / Experimental Section · Figure S14 referenced |
| compound 1 plus Pb2+ or Zn2+ solution binding samplesresearch_0575__mat__mat_ligand1_solution_model | Model · Model System · Model | Solution UV/Vis and 1H NMR titration/binding samples in CH3CN or CD3COCD3 with perchlorate salts. | S3-S7 · Supporting Information · Figures S1-S5 |
| two-probe TTF-Pb microwire deviceresearch_0575__mat__mat_pb_ttf_cp | Electrode · Target Sample · Pristine Framework | Microwires dispersed in water, dropped onto SiO2/p+-Si, and contacted with Au electrodes deposited by high-vacuum e-beam evaporation using a mesh-grid mask.SiO2(300 nm)/p+-Si(100) with Au electrodes · single/contacted microwire; device inset scale bar 1 um | 5128 · Experimental Section · Figure 3 |
| compressed pellet of TTF-Pb microwiresresearch_0575__mat__mat_pb_ttf_cp | Pellet · Target Sample · Pristine Framework | Compressed pellet used for four-probe PPMS-9 electrical conductivity measurements.8 x 6 x 0.1 mm | 5127 · Results and Discussion |
| TTF-Pb coordination-polymer microwiresresearch_0575__mat__mat_pb_ttf_cp | Powder · Target Sample · Pristine Framework | Purple precipitate collected after four weeks of room-temperature solvent diffusion.none for isolated precipitate; silicon substrate and carbon-coated copper grid for microscopy · wire diameters about 1 um; lengths up to several hundreds of microns | 5126 · Results and Discussion · Figure 1 |
| compressed pellet of TTF-Zn spherical particlesresearch_0575__mat__mat_zn_ttf_cp | Pellet · Target Sample · Pristine Framework | Compressed pellet used for four-probe PPMS-9 electrical conductivity measurements.2 x 3 x 0.1 mm | 5127 · Results and Discussion |
| TTF-Zn spherical coordination-polymer particlesresearch_0575__mat__mat_zn_ttf_cp | Powder · Target Sample · Pristine Framework | Purple precipitate collected after two weeks of room-temperature solvent diffusion.none for isolated precipitate; silicon substrate and carbon-coated copper grid for microscopy · sphere diameters about 500 nm | 5126 · Results and Discussion · Figure 2 |