FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


CAS Number 267221-90-9

Boronates, Chemistry Building Blocks, COF Ligands, Materials, Monomers, Porous Organic Frameworks

Product Code B3681-10g
Price £175 ex. VAT

Covalent Organic Frameworks (COFs) Triarylamine Ligand

A trigonal bridging ligand linker for COFs in applications of effective iodine uptake and supercapacitors

Specifications | MSDS | Literature and Reviews

Tris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amine (TPA-3BO), CAS number 267221-90-9, is a triphenylamine with a boronic acid pinacol ester on the end of each benzene rings. The boronic acid pinacol ester functional groups are ideal for Suzuki cross-coupling reaction to extend the size of the structure. Triarylamine (TAA) derivatives are good electrode materials for their high charge mobilities, excellent thermal stabilities, and high redox activity. Polytriarylamines (PTAAs) allow reversible radical redox reactions to occur through charge/discharge.

Porous aromatic frameworks (PAFs) LNU-58, prepared through Suzuki cross-coupling polymerization of TPA-3BO and 3,5-dibromoazobenzene, can adsorb iodine effectively with an adsorption capacity of 3533.11 mg g-1 (353 wt%) for gaseous iodine, and 903.6 mg g-1 (90 wt%) for dissolved iodine, among the highest level among all porous adsorbents.

Conjugated microporous polymer (CMP) TPA-TAB, with a large BET surface area (490 m2 g -1), demonstrated great thermal stability while being employed as electrode materials in supercapacitor devices. The TPA-TAB CMP showed an outstanding specific capacitance (684 F g -1 at 0.5 A g -1) and long-term stability with a capacitance retention of 99.5% after 5000 cycles (at 10 A g -1) in a three-electrode supercapacitor system.

MOF and COF ligands

MOF and COF ligands

Bpin ligand for cross-linked COF networks

Worldwide shipping for 267221-90-9

Worldwide shipping

Quick and reliable shipping

High purity 267221-90-9

High purity

>98% High purity

Facile reactions

Facile reactions

Bpin possesses excellent reactivity

General Information

CAS Number 267221-90-9
Chemical Formula C36H48B3NO6
Full Name Tris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amine
Molecular Weight 623.2 g/mol
Synonyms TPA-3BO, 4-(Tetramethyl-1,3,2-dioxaborolan-2-yl)-n,n-bis[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]aniline
Classification / Family Triarylamine, COF ligands

Chemical Structure

267221-90-9 - tris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amine chemical structure
Tris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amine (TPA-3BO) Chemical Structure, 267221-90-9

Product Details

Purity >98%
Melting Point N/A
Appearance White powder/crystal

MSDS Documentation

267221-90-9 - tris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amineTris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amine MSDS Sheet

Literature and Reviews

  1. An Azo-Group-Functionalized Porous Aromatic Framework for Achieving Highly Efficient Capture of Iodine, Z. Yan et al., Molecules, 27, 6297 (2022); DOI: 10.3390/molecules27196297.
  2. Constructing conjugated microporous polymers containing triphenylamine moieties for high-performance capacitive energy storage, M. Samy et al., Polymer, 264, 125541 (2023); DOI: 10.1016/j.polymer.2022.125541.
  3. Ultrastable Porous Organic Polymers Containing Thianthrene and Pyrene Units as Organic Electrode Materials for Supercapacitors, M. Mohamed et al., ACS Appl. Energy Mater., 5 (5), 6442–6452 (2022); DOI: 10.1021/acsaem.2c00942.
Return to the top