6710-92-5Relevant articles and documents
Heptazine: an Electron-Deficient Fluorescent Core for Discotic Liquid Crystals
Bala, Indu,Singh, Harpreet,Battula, Venugopala Rao,Gupta, Santosh Prasad,De, Joydip,Kumar, Sunil,Kailasam, Kamalakannan,Pal, Santanu Kumar
, p. 14718 - 14722 (2017)
Herein, room-temperature discotic liquid crystals based on heptazine, an electron deficient central core, are reported for the first time. Mesomorphic behaviors of the materials are also investigated. Supramolecular assembly of the mesophase derivatives were confirmed by X-ray scattering experiments. Heptazine-based solid thin films are strong blue light emitters, whereas in the solution state, they are weakly emissive or non-emissive. The band gap energy is found to be low in this class of compounds. Formation of room-temperature mesophases, low band-gap behavior, and strong blue-light emission in the solid state are promising attributes for optoelectronic applications of the materials.
Tri-s-triazine derivatives. Part I. From trichloro-tri-s-triazine to graphitic C3N4 structures
Kroke, Edwin,Schwarz, Marcus,Horath-Bordon, Elisabeth,Kroll, Peter,Noll, Bruce,Norman, Arlan D.
, p. 508 - 512 (2002)
The first detailed structural characterisation of a functionalised tri-s-triazine derivative, trichloro-tri-s-triazine, is reported, which is a promising starting material for numerous compounds including graphitic C3N4 phases. DFT calculations show that a C3N4 structure based on tri-s-triazine should exist and that it is ～30 kJ mol-1 more stable than the previously reported C3N4 phase of lowest energy.
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Redemann,Lucas
, p. 842,844 (1940)
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Synthesis of some heptazine derivatives
Krūkle-Bērzi?a, Kristīne,Bērzi??, Kārlis,Shubin, Kirill
, p. 1281 - 1284 (2019)
[Figure not available: see fulltext.] New derivatives of heptazine were prepared from 2,5,8-trichloroheptazine by a Friedel–Crafts reaction and Pd-catalyzed amination. New triamino-substituted heptazine derivative represents a soluble carbon nitride monomeric unit suitable for the assembly of metal–organic and covalent–organic frameworks. Aromatic substituents in heptazine ring can be displaced by an alkylamine in a pseudo-nucleophilic substitution reaction.
Integrating active C3N4moieties in hydrogen-bonded organic frameworks for efficient photocatalysis
Li, Tao,Liu, Bai-Tong,Fang, Zhi-Bin,Yin, Qi,Wang, Rui,Liu, Tian-Fu
supporting information, p. 4687 - 4691 (2021/03/09)
Hydrogen-bonded organic frameworks (HOFs) provide a platform to self-assemble numerous functional species into an ordered structure. Herein, a well-known photoactive C3N4moiety was integrated into an HOF structure (PFC-42) with the merits of high porosity and crystallinity. Under visible-light irradiation, the Pt nanoparticle-loaded PFC-42 (PFC-42-Pt) continuously produces hydrogen from water in the presence of scavengers with the evolution rate of 11.32 mmol g?1, which is outstanding among all the reported Pt/porous composite materials. The significantly high H2evolution of PFC-42-Pt compared with that of amorphous analogue bulk C3N4-Pt and nanosheet C3N4-Pt demonstrates that the ordered arrangement of photosensitizers dramatically improves the photocatalytic activity of the material, which is further proved by the recrystallization experiment. This study represents the first example of HOF capable of photocatalysis, not only demonstrating the great application potentials of HOF in heterogeneous photocatalysis but also rendering an excellent opportunity to reveal structure-activity relations.
