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2,2'-Bipyridine-4,4'-dicarboxylic acid

Product Name: 2,2'-Bipyridine-4,4'-dicarboxylic acid
Catalog Number: ALCM6813383
CAS Number: 6813-38-3

Product Description

Chemical Structure of 2,2'-Bipyridine-4,4'-dicarboxylic acid (dcbpy)

2,2'-Bipyridine-4,4'-dicarboxylic acid (dcbpy) is a high-purity bipyridyl compound bearing carboxylic acid groups at the 4,4'-positions. As a versatile building block for self-assembled monolayers (SAMs), its terminal carboxyl groups enable strong and stable attachment to metal oxide surfaces, especially nanocrystalline TiO₂.

The rigid aromatic backbone and electron-withdrawing carboxylic acid groups endow dcbpy with strong coordination ability and chemical stability. It plays a key role in the synthesis of metal–organic complexes widely applied in dye-sensitized solar cells (DSSCs). Dcbpy-based ligands are essential in ruthenium dyes such as N3, N719, Z907, and K19, contributing to efficient charge injection and improved interface stability.

In SAM-related applications, the dual carboxylic acid groups form robust ester-like linkages with semiconductor surfaces, enhancing molecular alignment and electronic coupling. These features make dcbpy well-suited for constructing electron-selective contact layers in optoelectronic devices.

Beyond photovoltaics, dcbpy is also employed as a ligand in metal-organic frameworks (MOFs) and covalent organic frameworks (COFs), where it's predictable coordination behavior supports the formation of extended porous networks.

Key Features

Functionalized with dual carboxylic acid anchoring groups
High chemical purity and thermal stability
Enables stable SAM formation on metal oxide surfaces
Integral to DSSC dye molecule design and performance
Applicable in MOF/COF network construction and electron transport layers

Product Information

Item	Details
CAS Number	6813-38-3
Catalog Number	ALCM6813383
Synonyms	Dcbpy, 2,2'-Bipyridyl-4,4'-dicarboxylic acid
Chemical Formula	C12H8N2O4
Molecular Weight	244.20 g/mol
Purity	> 98% (¹H NMR)
Appearance	White powder
Melting Point	> 250 °C