1,2,3-Triazole-based conjugated porous polymers for visible light induced oxidative organic transformations

Building a Pyrazole–Benzothiadiazole–Pyrazole Photosensitizer into Metal–Organic Frameworks for Photocatalytic Aerobic Oxidation

“…Many synthetic approaches to phenol derivatives have been developed due to their wide applications in medicinal chemistry and materials science. ,,− Among them, photocatalytic hydroxylation of arylboronic acids is increasingly gaining momentum because of its benign environmental impact and mild reaction conditions. In 2012, Xiao, Jørgensen, and co-workers employed [Ru­(bpy) 3 Cl 2 ]·6H 2 O as a homogeneous photocatalyst to realize aerobic oxidation of arylboronic acids under visible light for the first time …”

Click-based conjugated microporous polymers as efficient heterogeneous photocatalysts for organic transformations

“…In addition, diethynyls, which contain different numbers of thiophene rings, were used as linker building blocks to tune the photocatalytic activities of Ta-Ths. After the copper promoted polymerization, an electronacceptor unit, 1,2,3-triazole, 39 was introduced into the polymer skeletons. Since thiophene is a widely used electrondonor unit, 29,[41][42][43][44] the obtained Ta-Ths could be employed as donor-acceptor type photocatalysts.…”

“…The energy levels of the lowest unoccupied molecular orbital (LUMO) of Ta-Th-4, Ta-Th-5 and Ta-Th-6 were determined to be −0.56, −0.79 and −0.91 V vs. SCE, respectively. It's known that the reduction potential of O 2 /O 2 ˙− is −0.52 V vs. SCE; 39 the LUMO levels of the Ta-Ths are sufficiently negative to reduce O 2 to O 2 ˙−. The corresponding highest occupied molecular orbital (HOMO) level could be obtained to be 2.01 V for Ta-Th-4, 1.70 V for Ta-Th-5 and 1.34 V for Ta-Th-6 (Fig.…”

“…The copper promoted azide-alkyne click reaction, 34,35 featuring the merits of mild reaction conditions, wide group tolerance, high efficiency and specificity, has provided an alternative choice for the construction of porous materials. [36][37][38] Due to the rigidity, aromaticity and electron-acceptor capacity of the resulting 1,2,3-triazoles, 39 the click reaction is anticipated to have good potential to construct CMP photocatalysts.…”

4,5-Dicyano-1,2,3-Triazole—A Promising Precursor for a New Family of Energetic Compounds and Its Nitrogen-Rich Derivatives: Synthesis and Crystal Structures

“…Accordingly, triazoles have extensive applications in medicinal chemistry [1], biological sciences [2], polymer material [3], and agriculture [4]. For instance, a series of novel conjugated porous polymers represented by 1,4-bis(3,5-di(thiophen-2-yl)phenyl)-1H-1,2,3-triazole were designed and synthesized, and the results revealed that these polymers taking 1,2,3-triazole as the acceptor unit exhibited prominent photocatalytic activities toward organic chemical transformations [5]. As the synthesis of 1,2,3-triazole can be easily and efficiently realized via click chemistry, 1,2,3-triazole-based derivatives have aroused growing attention for plenty of studies in recent years.…”