Ossila 4CzPN-tBu M2379A2

4CzPN-tBu (3,4,5,6-tetrakis(3,6-di-t-butylcarbazol-9-yl)-1,2-dicyanobenzene, CAS 1469705-93-8) is a carbazolyl benzonitrile derivative valued as an efficient thermally activated delayed fluorescence (TADF) material. It serves as a green emitter and as a photosensitizer, and is offered in sublimed (>99%, HPLC) and unsublimed (>98.0%, 1H NMR) grades as an orange powder or crystals.

Its structure is built on a phthalonitrile core carrying four carbazole units arranged adjacent to and across from the two nitrile groups. Bulky tert-butyl substituents at the 3,6-positions of every carbazole improve solubility and hinder dimer and excimer formation between molecules, which helps limit exciton quenching.

Because it contains no heavy atoms, 4CzPN-tBu can act as a triplet photosensitizer, using its thermally accessible triplet energy to drive visible-to-ultraviolet photon up-conversion through triplet-triplet annihilation (TTA). Among 4CzPN-R derivatives, luminescence intensity decreases in the order H > tBu > Ph.

• Green or orange dopant emitter in TADF organic light-emitting diode research.
• Heavy-atom-free triplet photosensitizer for visible-to-ultraviolet photon up-conversion via triplet-triplet annihilation.
• Organic photocatalyst studies, including energy transfer photocatalysis such as [2+2] photodimerization.
• Organic photosensitizer research for photocatalytic water reduction.

• Product code: M2379A2
• Full Name: 3,4,5,6-tetrakis(3,6-di-t-butylcarbazol-9-yl)-1,2-dicyanobenzene
• Synonyms: 4TCzTPN, 4CzPN-Bu
• M​olecular Weight: 1237.74 g/mol
• HOMO/LUMO: HOMO = ~5.8 eV, LUMO = ~3.4 eV (estimated with 4CzPN as reference)
• Classification: Carbazole derivatives, Phthalonitriles, TADF materials, Green dopant materials, Orange dopant materials, Sublimed materials

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