4,4',4''-Tri-tert-butyl-2,2':6',2''-Terpyridine (CAS 115091-29-7): A High-Performance Tridentate Ligand for Advanced Coordination Chemistry

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Author : Nina He
Update time : 2026-07-20 17:26:27

When your research demands tridentate coordination with electronic tunability, 4,4',4''-Tri-tert-butyl-2,2':6',2''-terpyridine delivers on every front. This is not just another terpyridine - the three strategically placed tert-butyl groups transform the ligand’s behavior in ways that matter for real-world applications.

The tert-butyl substituents at all three 4-positions create a synergistic electron-donating effect that substantially modulates the electronic environment of the coordinated metal center. Simultaneously, the steric shielding around the binding pocket prevents dimerization and decomposition pathways that plague simpler terpyridine complexes, especially under photochemical and electrochemical stress. The result: metal complexes that are more stable, more soluble, and more catalytically active - all at once.

 

Why This Terpyridine Stands Out

Advantage

Impact

Enhanced Electron Density

Three tert-butyl donors push electron density toward the metal center, lowering reduction potentials

Steric Protection

Bulky substituents shield the metal-ligand bond from decomposition pathways

Superior Solubility

Lipophilic tert-butyl groups dramatically improve solubility in organic solvents vs. unsubstituted terpyridine

Strong Tridentate Binding

N,N,N coordination provides exceptional thermodynamic and kinetic stability to metal complexes

 

Key Applications

•Iron-Based Photosensitizers - Enabling earth-abundant alternatives to ruthenium in solar energy conversion and photocatalysis

•Luminescent Materials - Ir(III) and Zn(II) complexes for OLEDs, LECs, and electrochemiluminescent (ECL) devices

•Molecular Magnetism - Fe(II) and Co(II) complexes exhibiting spin-crossover behavior for molecular switches and sensors

•Supramolecular Assembly - Building block for stimuli-responsive polymers and self-healing materials

•Electrocatalysis - CO₂ reduction and water oxidation catalysts with tunable redox potentials

•Bioinorganic Chemistry - DNA-binding metallo-intercalators and luminescent probes for cellular imaging

 

 

In Stock - Competitive Pricing - Fast Global Shipping

Both products are available from stock at Shanghai UCHEM with:

•Gram to kilogram scale - no minimum order barriers for R&D; bulk pricing for production

•Consistent batch-to-batch quality - full COA provided with every shipment

•Global shipping - ambient conditions; inert packaging available

•Technical support - our team can assist with formulation and application questions

 

FAQ

What is 4,4',4''-Tri-tert-butyl-2,2':6',2''-terpyridine used for?

It is widely used as a tridentate ligand in coordination chemistry, photocatalysis, electrocatalysis, OLED materials, molecular magnetism, and supramolecular chemistry.

 

What are the advantages over unsubstituted terpyridine?

The three tert-butyl groups improve electron donation, increase steric protection, enhance solubility in organic solvents, and provide greater stability to metal complexes.

 

Can UCHEM supply this product in bulk?

Yes. UCHEM supplies this product from gram to kilogram quantities with COA, competitive pricing, and worldwide shipping.

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