Primary studyCore evidenceTransport Physics

Semiconductive Coordination Polymer with Multi-Channel Charge Transfer for High-Performance Direct X-ray Detection

Yu X.-Q., Sun L.-B., Li Q.-Y. et al. · Angewandte Chemie - International Edition · 2025 · e202419266

1materials
6samples
1synthesis routes
17measurements
43results
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

The detector maintains favourable ambient-air/moisture stability and operational cycling stability.

Caveat: Cycle and drift values are device-level tests; long-term ambient claim is three-month exposure rather than continuous operation under all conditions.

7 · Results and Discussion · Figure 4e-g; Figure S1; Figure S13 · Linked to 5 structured results

Application RelevanceSupport assessment: High

The Ag/1/Ag pellet detector achieves 8.05 x 10^-3 cm2 V^-1 mobility-lifetime product, 172 μC Gyair^-1 cm^-2 sensitivity at 35 V, and 0.128 μGyair s^-1 measured low-dose response, reported as record or superior values among CP-based direct X-ray detectors.

Caveat: Leaderboard claim relies on the authors' literature comparison in Table S6; no external documents were fetched by protocol.

1, 7 · Abstract; Results and Discussion · Figure 4; Table S6 · Linked to 4 structured results

Phase AssignmentSupport assessment: High

Compound 1 is a phase-pure triclinic P-1 Co(II) coordination polymer in which DIPA-bridged 2D layers are assembled into a 3D framework by BPTTz ligands.

Caveat: Lattice solvent is described as highly disordered.

2-3 · Results and Discussion · Figure 1; Table S1 · Linked to 3 structured results

Structure Property LinkSupport assessment: High

The pellet detector has high bulk resistivity and pA-level dark current, supporting low-noise X-ray detection.

Caveat: Dark-current magnitude is visually estimated from Figure 3d; resistivity is directly reported.

4-5 · Results and Discussion · Figure 3b-d · Linked to 3 structured results

Transport MechanismSupport assessment: Medium

Ligand-mediated electronic-state regulation and compact BPTTz/DIPA interactions create multiple charge-transfer pathways that reduce carrier recombination/quenching.

Caveat: Mechanistic attribution combines spectroscopy and calculations; direct device performance is measured, but pathway assignment is interpretive.

3-4 · Results and Discussion · Figure 2; Table S3-S4 · Linked to 5 structured results

Material identities

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

MaterialCompositionStructure contextSource
{[Co(BPTTz)(DIPA)]·DMA}n (compound 1)C26H19CoI2N5O5S2; reported polymer formula {[Co(BPTTz)(DIPA)]·DMA}nCo(II) ions octahedrally coordinated by four carboxylate O atoms from DIPA2- ligands and two N atoms from BPTTz ligands · BPTTz = 2,5-bis(pyridine-4-yl)thiazolo[5,4-d]thiazole; DIPA2- from H2DIPA = 2,5-diiodoterephthalic acid; lattice DMA3D · PristineTriclinic P-1; DIPA-bridged 2D layers assembled into a 3D framework through BPTTz ligands; highly disordered lattice DMA, two DMA molecules per unit cell.1-3 · Abstract; Results and Discussion · Figure 1; Table S1-S2 referenced

Sample register

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

Show 6 sample records
SampleForm and roleProcessing and geometrySource
as-synthesised orange plate single crystals of 1research_0285__mat__m_co_bpttz_dipa_dma_1Single Crystal · Target Sample · Pristine FrameworkWashed with water and DMA, dried in vacuum; all crystal samples selected under microscope.S7 · 1.11 Syntheses · Figure S1
DFT model of compound 1 from crystal structureresearch_0285__mat__m_co_bpttz_dipa_dma_1Model · Model System · ModelCrystallographic data of 1 used to build DFT and molecular models.S5 · 1.5 Theoretical calculations · Figure 2; Table S4
1_moistureresearch_0285__mat__m_co_bpttz_dipa_dma_1Powder · Target Sample · Pristine FrameworkAs-prepared crystalline sample placed in the dark under 85%-100% relative humidity for 24 h.S8 · 2 Supplementary Figures · Figure S1
Ag/1/Ag pellet detector deviceresearch_0285__mat__m_co_bpttz_dipa_dma_1Pellet · Target Sample · Pristine FrameworkMicrocrystalline powder pressed in 3 x 3 mm2 mould at approximately 0.15 tons; silver paste contacts and silver wires.Ag contacts/silver paste on both sides · about 0.50 mm; SI also reports three pellets of about 0.50 mm, 0.50 mm, and 0.75 mmS4 · 1.4 X-ray detection measurements · Figure 3; Figure 4
Sample 2 pellet detectorresearch_0285__mat__m_co_bpttz_dipa_dma_1Pellet · Target Sample · Pristine FrameworkRepeat pellet detector from same material batch/fabrication protocol.Ag contacts/silver paste · not specified for Sample 2; pellet set includes about 0.50, 0.50, and 0.75 mm7 · Results and Discussion · Figures S14-S15
Sample 3 pellet detectorresearch_0285__mat__m_co_bpttz_dipa_dma_1Pellet · Target Sample · Pristine FrameworkRepeat pellet detector from same material batch/fabrication protocol.Ag contacts/silver paste · not specified for Sample 3; pellet set includes about 0.50, 0.50, and 0.75 mmS14-S15 · 2 Supplementary Figures · Figures S16-S17