Yildirim M., Kaya I. · Polymer · 2009 · 5653-5660
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.
P-2 and P-3 are proposed as active layers for gas sensors against electro-acceptor gases such as iodine.
Caveat: No actual gas-sensor device response/recovery measurement is reported; application relevance is inferred from iodine doping response and absorption changes.
5659 (p007) · 3.4 Doping procedure and electrical conductivities; Conclusions · Figure 8 · Linked to 3 structured results
No porosity or surface-area measurement is reported for these soluble Cr(III) chelate polymers.
Caveat: Based on full main-text review and absence of BET/porosity section, table or figure.
5653-5660 (p001-p008) · Experimental; Results and discussion
P-1 is the most thermally stable polymer among the synthesised Cr(III) chelate polymers.
5659 (p007) · 3.5 Thermal analysis; Conclusions · Table 4 · Linked to 4 structured results
P-2 is the most electro-conductive polymer and this is linked to its lowest optical and electrochemical band gaps.
Caveat: Absolute conductivity values are mostly plot-derived estimates, but the ranking and band gaps are reported directly.
5658-5659 (p006-p007) · 3.4 Doping procedure and electrical conductivities; Conclusions · Figure 7; Table 3 · Linked to 5 structured results
The synthesised Cr(III)-containing chelate polymers are semiconductors with polyconjugated structures.
Caveat: The materials are soluble chelate/coordination polymers; no crystallographic conductivity pathway or porosity is reported.
5653; 5659 (p001, p007) · Abstract; Conclusions · Linked to 6 structured results
Iodine doping increases conductivity by forming a charge-transfer complex between the polymers and dopant iodine.
Caveat: Mechanistic assignment is inferred from conductivity changes and literature mechanism, not directly measured charge-transfer species.
5657-5658 (p005-p006) · 3.4 Doping procedure and electrical conductivities · Figures 6-7 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| 3,4-HBA-Cr model compound | Cr-coordinated dialdehyde molecule from 3,4-dihydroxybenzaldehyde; empirical formula not statedCr(III) coordinated by 3,4-dihydroxybenzaldehyde-derived O donors · 3,4-dihydroxybenzaldehyde | 0D · Model SystemMonomeric model compound/preformed Cr-coordinated dialdehyde used before polymer-forming condensation. | 5654-5655 (p002-p003) · 2.2 Syntheses of the polymers · Scheme 2; Figure 5 |
| P-1 Cr(III)-coordinated polyazomethine chelate polymer | Cr(III)-coordinated 3,4-HBA/OPDA polyazomethine repeat structure; empirical formula not statedCr(III) ions coordinated by catecholato/phenolate O donors from 3,4-dihydroxybenzaldehyde units · 3,4-dihydroxybenzaldehyde-derived dialdehyde coordinated to Cr(III), condensed with o-phenylenediamine (OPDA) | 1D · PristineSoluble Type III metal coordination chelate polymer with Cr(III) in the backbone and polyconjugated imine structure; no crystallographic topology reported. | 5654-5655 (p002-p003) · 2.2 Syntheses of the polymers; Scheme 2 · Scheme 2 |
| P-2 Cr(III)-coordinated polyazomethine chelate polymer | Cr(III)-coordinated 3,4-HBA/PPDA polyazomethine repeat structure; empirical formula not statedCr(III) ions coordinated by catecholato/phenolate O donors from 3,4-dihydroxybenzaldehyde units · 3,4-dihydroxybenzaldehyde-derived dialdehyde coordinated to Cr(III), condensed with p-phenylenediamine (PPDA) | 1D · PristineSoluble Type III metal coordination chelate polymer with Cr(III) in the backbone and polyconjugated imine structure; no crystallographic topology reported. | 5654-5655 (p002-p003) · 2.2 Syntheses of the polymers; Scheme 2 · Scheme 2 |
| P-3 Cr(III)-coordinated polyazomethine chelate polymer | Cr(III)-coordinated 3,4-HBA/NDA polyazomethine repeat structure; empirical formula not statedCr(III) ions coordinated by catecholato/phenolate O donors from 3,4-dihydroxybenzaldehyde units · 3,4-dihydroxybenzaldehyde-derived dialdehyde coordinated to Cr(III), condensed with naphthalene-1,5-diamine (NDA) | 1D · PristineSoluble Type III metal coordination chelate polymer with Cr(III) in the backbone and polyconjugated imine structure; no crystallographic topology reported. | 5654-5655 (p002-p003) · 2.2 Syntheses of the polymers; Scheme 2 · Scheme 2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| 3,4-HBA-Cr model compound in methanolresearch_0581__mat__mat_34_hba_cr_model | Model · Model System · Model | model compound compared by UV-vis absorption in methanol at 25 C | 5656-5657 (p004-p005) · 3.3 Optical and electrochemical properties · Figure 5 |
| P-1 iodine-doped ITO filmresearch_0581__mat__mat_p1_cr_chelate_polymer | Thin Film · Target Sample · Doped | dip-coated P-1 film exposed to iodine vapour at atmospheric pressure in a desiccatorindium-tin-oxide (ITO) glass plate | 5655; 5658-5659 (p003, p006-p007) · 2.5 Electrical properties; 3.4 Doping procedure and electrical conductivities · Figures 6-8 |
| P-1 dip-coated ITO film, undopedresearch_0581__mat__mat_p1_cr_chelate_polymer | Thin Film · Target Sample · Pristine Framework | dip-coated from methanol solution, 50 mg/mL, 50 dipping/withdrawal cycles with 1 min drying after each dipindium-tin-oxide (ITO) glass plate | 5655 (p003) · 2.5 Electrical properties · Figure 7a |
| P-1 as-synthesised polymerresearch_0581__mat__mat_p1_cr_chelate_polymer | Powder · Target Sample · Pristine Framework | precipitated into toluene, washed with toluene and water, dried in vacuum oven for 24 h | 5654 (p002) · 2.2 Syntheses of the polymers |
| P-2 iodine-doped ITO filmresearch_0581__mat__mat_p2_cr_chelate_polymer | Thin Film · Target Sample · Doped | dip-coated P-2 film exposed to iodine vapour at atmospheric pressure in a desiccatorindium-tin-oxide (ITO) glass plate | 5655; 5658 (p003, p006) · 2.5 Electrical properties; 3.4 Doping procedure and electrical conductivities · Figures 7b, 7d, 8b |
| P-2 dip-coated ITO film, undopedresearch_0581__mat__mat_p2_cr_chelate_polymer | Thin Film · Target Sample · Pristine Framework | dip-coated from methanol solution, 50 mg/mL, 50 dipping/withdrawal cycles with 1 min drying after each dipindium-tin-oxide (ITO) glass plate | 5655 (p003) · 2.5 Electrical properties · Figure 7c |
| P-2 as-synthesised polymerresearch_0581__mat__mat_p2_cr_chelate_polymer | Powder · Target Sample · Pristine Framework | precipitated into toluene, washed with toluene and water, dried in vacuum oven for 24 h | 5654 (p002) · 2.2 Syntheses of the polymers |
| P-3 iodine-doped ITO filmresearch_0581__mat__mat_p3_cr_chelate_polymer | Thin Film · Target Sample · Doped | dip-coated P-3 film exposed to iodine vapour at atmospheric pressure in a desiccatorindium-tin-oxide (ITO) glass plate | 5655; 5658-5659 (p003, p006-p007) · 2.5 Electrical properties; 3.4 Doping procedure and electrical conductivities · Figures 7b, 8b |
| P-3 dip-coated ITO film, undopedresearch_0581__mat__mat_p3_cr_chelate_polymer | Thin Film · Target Sample · Pristine Framework | dip-coated from methanol solution, 50 mg/mL, 50 dipping/withdrawal cycles with 1 min drying after each dipindium-tin-oxide (ITO) glass plate | 5655 (p003) · 2.5 Electrical properties · Figure 7b |
| P-3 as-synthesised polymerresearch_0581__mat__mat_p3_cr_chelate_polymer | Powder · Target Sample · Pristine Framework | precipitated into toluene, washed with toluene and water, dried in vacuum oven for 24 h | 5654 (p002) · 2.2 Syntheses of the polymers |