Ten-gram grinding makes lanthanum coordination polymers
Manual grinding of LaCl3 with 5-sulfosalicylate and 8-hydroxyquinoline yields ternary CPs whose IR/XPS/MS match a chelated nanocomposite.
Source
Ten-Gram-Scale Mechanochemical Synthesis of Ternary Lanthanum Coordination Polymers for Antibacterial and Antitumor Activities
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Ten-gram grinding makes lanthanum coordination polymers
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How were the 10-gram lanthanum CPs made?
The 10-gram-scale ternary lanthanum CPs were synthesized using a facile and manual grind method
ICP-MS lanthanum content?
The elemental analysis found (%) C 35.28, H 1.9, N 3.4, S 3.15, and O 12.54; ICP-MS: 27.81% La.
What they did
Authors ground 5-SSA, 8-hq and LaCl3·7H2O for 1 h at 25 °C, compared a solution-phase analogue, and characterized products by NMR, ESI-MS, XPS, XRD, BET and TG.
What they found
ESI-MS 912.6347 g mol–1; COO IR bands shift on La chelation; XPS shows N–La and O–S; BET 5.58 m2 g–1 mesopores. Solution-phase LCP-3 has different UV/IR, proving method-dependent nanostructures.
The limits
What it doesn't show
No single-crystal structure of LCP-1; antibacterial/antitumor assays are cellular screens, not a molecular MIC mechanism.
Key terms
- Mechanochemistry
- Solvent-free reactions driven by grinding or milling.
- Coordination polymer (CP)
- Extended solid of metal nodes linked by organic ligands.
- 8-Hydroxyquinoline (8-hq)
- N,O-chelating ligand used with 5-SSA on La3+.
- 5-Sulfosalicylate (5-SSA)
- Sulfonated salicylate co-ligand in the ternary CP.
- ESI-MS
- Electrospray mass spectrometry confirming the molecular ion of the CP fragment.
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Quiz yourself
Synthesis method for 10 g LCPs:
Common questions
How is the CP made?
Manual grinding 1 h at 25 °C, no solvent.
What proves La–ligand chelation?
COO IR blue shifts and XPS N–La components.
Does solution synthesis give the same material?
No—LCP-3 UV/IR/morphology differ.
ESI-MS mass?
912.6347 g mol–1 for [MS–2H]+.
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