102050-25-9

Basic information

• Product Name: 2,5,8-tri(phenyl)-1,3,4,6,7,9,9b-heptaazaphenalene
• Synonyms: 2,5,8-tri(phenyl)-1,3,4,6,7,9,9b-heptaazaphenalene
• CAS NO: 102050-25-9
• Molecular Weight: 401.43
• Mol File: 102050-25-9.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 2,5,8-tri(phenyl)-1,3,4,6,7,9,9b-heptaazaphenalene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5,8-tri(phenyl)-1,3,4,6,7,9,9b-heptaazaphenalene(102050-25-9)
• EPA Substance Registry System: 2,5,8-tri(phenyl)-1,3,4,6,7,9,9b-heptaazaphenalene(102050-25-9)

Safety Data

• Hazardous Substances Data: 102050-25-9(Hazardous Substances Data)

Upstream product

• 6710-92-5 2,5,8-trichloro-1,3,4,6,7,9,9b-heptaazaphenalene 
• 71-43-2 benzene 
• 108-77-0 1,3,5-trichloro-2,4,6-triazine 

Relevant articles and documents

Structural design of small-molecule carbon-nitride dyes for photocatalytic hydrogen evolution

Carbon nitrides are an emerging class of metal-free polymeric photocatalysts but limited by the structural modifications. With the same central skeleton, small-molecule carbon-nitride dyes (also called heptazine dyes) have attracted widespread attention in the past decades. Herein, by introducing the electron-rich aryl substituents at three peripheral positions, four donor-acceptor (D-A) heptazine derivatives have been synthesized via Friedel-Crafts reactions, and their photocatalytic hydrogen evolution properties have been carefully investigated. Presumably, due to the most effective conjugation and reasonable HOMO and LUMO positions, the optimized heptazine 4 with three 4-methylbiphenyl substituents exhibited an impressive thermally activated delayed fluorescence (TADF), which indicated it possessed the maximized photoinduced charge separations, and thus presented the highest photocatalytic activity. This work not only contributes to the small-molecule carbon-nitride dyes, but also has an instructive significance on understanding the electron-transfer mechanism of carbon nitride photocatalysts at the molecular level.

NEW DERIVATIVES OF HEPTAAZAPHENALENE, METHODS FOR OBTAINING THEM, AND THEIR USE AS PROTECTING AGENTS AGAINST UV RADIATION

The present invention relates to new heptaazaphenalene derivatives of general Formula (I) and to methods for obtaining them. The physicochemical properties of said compounds allow them to be used as UV radiation absorbents.