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Product Code B1931-100g
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A benzophenone-cored dianhydride building block

As an intermediate for the synthesis of polyimides in application of photosensitizers, high-performance polymers and OFETs

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) is derived from benzophenone with two dianhydride on both terminals. The primary use of 3,3',4,4'-Benzophenonetetracarboxylic dianhydride is for synthesizing polyimide with primary amines undergoing nucleophilic substitution followed by condensation reactions. Benzophenone-cored polyimide is used in photocatalytic dye degradation applications such as methylene blue in water. Potentially it can extend its applications to dye-sensitized solar cells (DSSCs) and photocatalytic reactions.

The polyimide/copolymer formed by BTDA has shown high thermal stability and good mechanical properties. This polyimide is an electret and used as a dielectric layer for high performance OFET memory devices.

General Information

CAS Number 2421-28-5
Chemical Formula C17H6O7
Full Name 3,3',4,4'-Benzophenonetetracarboxylic dianhydride
Molecular Weight 322.23 g/mol
Synonyms Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride
4,4′-Carbonyldiphthalic anhydride
Classification / Family Benzophenone derivatives, Dianhydride building blocks, Polyimides, OFETs, Photosensitizers

Chemical Structure

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) chemical structure, CAS 2421-28-5
3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA),chemical structure, CAS 2421-28-5

Product Details

Purity >98.5%
Melting Point Tm = 218 °C – 222 °C
Appearance White to off-white powder

MSDS Documentation

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA)3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) MSDS Sheet

Literature and Reviews

  1. Developing high-efficiency π conjugated polymer semiconductor for photocatalytic degradation of dyes under visible light irradiation, S. Chu et al., RSC Adv., 4, 57153-57158(2014); DOI: 10.1039/C4RA11345D.
  2. Electrospun antibacterial poly(vinyl alcohol)/Ag nanoparticles membrane grafted with 3,3′,4,4′-benzophenone tetracarboxylic acid for efficient air filtration, S. Li., Appl. Surf. Sci., 533, 147516(2020); DOI: 10.1016/j.apsusc.2020.147516.
  3. Intrinsically negative photosensitive polyimides with enhanced high-temperature dimensional stability and optical transparency for advanced optical applications via simultaneous incorporation of trifluoromethyl and benzanilide units: preparation and properties, Y. Gao et al., polymers, 14, 3733(2022), DOI: 10.3390/polym14183733.
  4. Nonvolatile transistor memory devices using high dielectric constant polyimide electrets, Y.-H. Chou et al., J. Mater. Chem. C, 1, 3235–3243(2013); DOI: 10.1039/c3tc30252k.
  5. Polymeric charge storage electrets for nonvolatile organic field effect transistor memory devices, Y.-H. Chou et al., Polym. Chem., 6, 341-352(2015); DOI: 10.1039/C4PY01213E.
  6. 4,4',4''-triaminotriphenylamine-based porous polyimide as visible light-driven photocatalysts, Q. Wang et al., New J. Chem., 42, 12205-12211(2018); DOI: 10.1039/C8NJ02173B.
  7. Synthesis and properties of new clay-reinforced aromatic polyimide/nanocomposite-based 3,3′,4,4′-benzophenonetetracarboxylic dianhydride and 1,3-bis(4-aminophenoxy)propane, K. Faghihi et al., Sci. Eng. Compos. Mater., 21(2), 151–157(2014); DOI: 10.1515/secm-2012-0136.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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