Li H., Liu C., Dai B. et al. · Journal of Applied Polymer Science · 2015 · 42498
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.
Chiral complex 1a gives a much lower reflection loss than achiral complex 1b at the same 5 mm matching thickness, attributed to chiral-structure polarisation effects.
Caveat: Reflection loss is calculated from measured EM parameters for complex/paraffin composites rather than measured directly on neat films.
7 · Electromagnetic Wave Absorption Performance · Figure 5 · Linked to 2 structured results
The paper reports conductive poly Schiff bases and silver coordination polymers/complexes, but does not report a crystalline MOF topology, porosity, PXRD refinement, or surface-area data.
Caveat: Included because this evidence database is MOF-oriented and these materials are coordination-polymer/polymer complexes rather than fully characterised MOFs.
2-4 · Experimental and Results
Lower-frequency C=N bands in silver complexes are interpreted as coordination of imine nitrogen atoms to silver ions.
Caveat: No crystallographic structure is reported; assignment is based on spectroscopy and elemental analysis.
4 · Infrared Spectroscopy · Linked to 6 structured results
The achiral p-benzoquinone silver complex 1b has conductivity close to chiral complex 1a, so the authors state chirality has no obvious effect on conductivity.
Caveat: This comparison is only for one L-lysine/DL-lysine pair and uses pressed-tablet room-temperature conductivity.
6 · Conductivity Analysis · Table I · Linked to 2 structured results
The authors infer a positive relationship between conductivity and dielectric constant across the silver complexes.
Caveat: The relationship is qualitative across a small set of chemically different complexes.
7 · Electromagnetic Parameter Analysis · Figure 3 and Table I · Linked to 8 structured results
Silver coordination significantly increases conductivity relative to the corresponding free poly Schiff bases, with complex 4a reaching the highest reported conductivity.
Caveat: The paper reports room-temperature tablet conductivities only; no temperature-dependent transport mechanism is measured.
5 · Conductivity Analysis · Table I · Linked to 8 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| chiral poly-(L-lysine(p-benzoquinone)) Schiff base silver complex | (C24H26N4O4Ag2)nSilver coordination sites; Figure 1 depicts Ag coordination to imine/carboxylate donor atoms of the poly Schiff base. · Ag+ coordinated to the chiral poly Schiff base derived from L-lysine and p-benzoquinone | unknown · PristineSilver poly Schiff base coordination polymer/complex assigned by IR shifts, elemental Ag analysis, UV-vis charge-transfer band, GPC and optical rotation; no PXRD or crystal structure reported. | 3 · Experimental - Synthesis of Chiral Poly Schiff Bases Silver Complexes · Figure 1 |
| achiral poly-(DL-lysine(p-benzoquinone)) Schiff base silver complex | (C24H26N4O4Ag2)nSilver coordination sites; Figure 1 depicts Ag coordination to imine/carboxylate donor atoms of the poly Schiff base. · Ag+ coordinated to the achiral poly Schiff base derived from DL-lysine and p-benzoquinone | unknown · PristineSilver poly Schiff base coordination polymer/complex assigned by IR shifts, elemental Ag analysis, UV-vis charge-transfer band, GPC and optical rotation; no PXRD or crystal structure reported. | 3 · Experimental - Synthesis of Chiral Poly Schiff Bases Silver Complexes · Figure 1 |
| chiral poly-(L-lysine(1,4-naphthoquinone)) Schiff base silver complex | (C32H30N4O4Ag2)nSilver coordination sites; Figure 1 depicts Ag coordination to imine/carboxylate donor atoms of the poly Schiff base. · Ag+ coordinated to the chiral poly Schiff base derived from L-lysine and 1,4-naphthoquinone | unknown · PristineSilver poly Schiff base coordination polymer/complex assigned by IR shifts, elemental Ag analysis, UV-vis charge-transfer band, GPC and optical rotation; no PXRD or crystal structure reported. | 3 · Experimental - Synthesis of Chiral Poly Schiff Bases Silver Complexes · Figure 1 |
| chiral poly-(L-lysine(dibenzoyl)) Schiff base silver complex | (C40H38N4O4Ag2)nSilver coordination sites; Figure 1 depicts Ag coordination to imine/carboxylate donor atoms of the poly Schiff base. · Ag+ coordinated to the chiral poly Schiff base derived from L-lysine and dibenzoyl | unknown · PristineSilver poly Schiff base coordination polymer/complex assigned by IR shifts, elemental Ag analysis, UV-vis charge-transfer band, GPC and optical rotation; no PXRD or crystal structure reported. | 3 · Experimental - Synthesis of Chiral Poly Schiff Bases Silver Complexes · Figure 1 |
| chiral poly-(L-lysine(2,3-butanedione)) Schiff base silver complex | (C20H30N4O4Ag2)nSilver coordination sites; Figure 1 depicts Ag coordination to imine/carboxylate donor atoms of the poly Schiff base. · Ag+ coordinated to the chiral poly Schiff base derived from L-lysine and 2,3-butanedione | unknown · PristineSilver poly Schiff base coordination polymer/complex assigned by IR shifts, elemental Ag analysis, UV-vis charge-transfer band, GPC and optical rotation; no PXRD or crystal structure reported. | 3 · Experimental - Synthesis of Chiral Poly Schiff Bases Silver Complexes · Figure 1 |
| poly-(L-lysine(p-benzoquinone)) Schiff base | (C24H26N4O4K2)nPotassium carboxylate salt sites from KOH-deprotonated lysine; no transition-metal framework node reported. · L-lysine and p-benzoquinone imine polymer; potassium carboxylate salt | unknown · PristineConjugated poly Schiff base assigned by IR, UV-vis, GPC, elemental analysis and optical rotation; no crystallographic topology reported. | 2 · Experimental - Synthesis of the Chiral Poly Schiff Bases · Figure 1 |
| poly-(L-lysine(1,4-naphthoquinone)) Schiff base | (C32H30N4O4K2)nPotassium carboxylate salt sites from KOH-deprotonated lysine; no transition-metal framework node reported. · L-lysine and 1,4-naphthoquinone imine polymer; potassium carboxylate salt | unknown · PristineConjugated poly Schiff base assigned by IR, UV-vis, GPC, elemental analysis and optical rotation; no crystallographic topology reported. | 2 · Experimental - Synthesis of the Chiral Poly Schiff Bases · Figure 1 |
| poly-(L-lysine(dibenzoyl)) Schiff base | (C40H38N4O4K2)nPotassium carboxylate salt sites from KOH-deprotonated lysine; no transition-metal framework node reported. · L-lysine and dibenzoyl imine polymer; potassium carboxylate salt | unknown · PristineConjugated poly Schiff base assigned by IR, UV-vis, GPC, elemental analysis and optical rotation; no crystallographic topology reported. | 2 · Experimental - Synthesis of the Chiral Poly Schiff Bases · Figure 1 |
| poly-(L-lysine(2,3-butanedione)) Schiff base | (C20H30N4O4K2)nPotassium carboxylate salt sites from KOH-deprotonated lysine; no transition-metal framework node reported. · L-lysine and 2,3-butanedione imine polymer; potassium carboxylate salt | unknown · PristineConjugated poly Schiff base assigned by IR, UV-vis, GPC, elemental analysis and optical rotation; no crystallographic topology reported. | 2 · Experimental - Synthesis of the Chiral Poly Schiff Bases · Figure 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Complex 1a / paraffin toroidal microwave sampleresearch_0404__mat__mat_c1a | Pellet · Composite Sample · Composite | Poly Schiff base silver complex uniformly mixed with paraffin at mass ratio 7:3 and pressed into toroidal shapes with outer diameter 7.00 mm and inner diameter 3.00 mm.Paraffin matrix. · Toroid thickness 2.00 mm for EM-parameter measurement; reflection loss calculated for layer thicknesses 1-5 mm. | 2 · Measurements |
| Complex 1a pressed tablet / dried black powderresearch_0404__mat__mat_c1a | Pellet · Target Sample · Pristine Framework | Silver-complex precipitate collected by vacuum filtration, washed with ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Complex 1b / paraffin toroidal microwave sampleresearch_0404__mat__mat_c1b | Pellet · Pristine Control · Composite | Poly Schiff base silver complex uniformly mixed with paraffin at mass ratio 7:3 and pressed into toroidal shapes with outer diameter 7.00 mm and inner diameter 3.00 mm.Paraffin matrix. · Toroid thickness 2.00 mm for EM-parameter measurement; reflection loss calculated for layer thicknesses 1-5 mm. | 2 · Measurements |
| Complex 1b pressed tablet / dried black powderresearch_0404__mat__mat_c1b | Pellet · Pristine Control · Pristine Framework | Silver-complex precipitate collected by vacuum filtration, washed with ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Complex 2a / paraffin toroidal microwave sampleresearch_0404__mat__mat_c2a | Pellet · Composite Sample · Composite | Poly Schiff base silver complex uniformly mixed with paraffin at mass ratio 7:3 and pressed into toroidal shapes with outer diameter 7.00 mm and inner diameter 3.00 mm.Paraffin matrix. · Toroid thickness 2.00 mm for EM-parameter measurement; reflection loss calculated for layer thicknesses 1-5 mm. | 2 · Measurements |
| Complex 2a pressed tablet / dried black powderresearch_0404__mat__mat_c2a | Pellet · Target Sample · Pristine Framework | Silver-complex precipitate collected by vacuum filtration, washed with ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Complex 3a / paraffin toroidal microwave sampleresearch_0404__mat__mat_c3a | Pellet · Composite Sample · Composite | Poly Schiff base silver complex uniformly mixed with paraffin at mass ratio 7:3 and pressed into toroidal shapes with outer diameter 7.00 mm and inner diameter 3.00 mm.Paraffin matrix. · Toroid thickness 2.00 mm for EM-parameter measurement; reflection loss calculated for layer thicknesses 1-5 mm. | 2 · Measurements |
| Complex 3a pressed tablet / dried brown powderresearch_0404__mat__mat_c3a | Pellet · Target Sample · Pristine Framework | Silver-complex precipitate collected by vacuum filtration, washed with ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Complex 4a / paraffin toroidal microwave sampleresearch_0404__mat__mat_c4a | Pellet · Composite Sample · Composite | Poly Schiff base silver complex uniformly mixed with paraffin at mass ratio 7:3 and pressed into toroidal shapes with outer diameter 7.00 mm and inner diameter 3.00 mm.Paraffin matrix. · Toroid thickness 2.00 mm for EM-parameter measurement; reflection loss calculated for layer thicknesses 1-5 mm. | 2 · Measurements |
| Complex 4a pressed tablet / dried black powderresearch_0404__mat__mat_c4a | Pellet · Target Sample · Pristine Framework | Silver-complex precipitate collected by vacuum filtration, washed with ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Polymer 1 pressed tablet / dried gray powderresearch_0404__mat__mat_poly1 | Pellet · Target Sample · Pristine Framework | Precipitate collected by vacuum filtration, washed with absolute ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Polymer 2 pressed tablet / dried brown powderresearch_0404__mat__mat_poly2 | Pellet · Target Sample · Pristine Framework | Precipitate collected by vacuum filtration, washed with absolute ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Polymer 3 pressed tablet / dried buff powderresearch_0404__mat__mat_poly3 | Pellet · Target Sample · Pristine Framework | Precipitate collected by vacuum filtration, washed with absolute ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |
| Polymer 4 pressed tablet / dried gray powderresearch_0404__mat__mat_poly4 | Pellet · Target Sample · Pristine Framework | Precipitate collected by vacuum filtration, washed with absolute ethanol three times, dried in a vacuum desiccator, then pressed as a tablet at 15 MPa for conductivity testing.Approximately 1 mm for conductivity tablets. | 2 · Measurements |