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Despite the fact that water is a widely available, non-toxic, and safe solvent, its application in organic synthesis remains an ongoing challenge due to the insolubility of numerous catalysts, reactants and products in water. In this study, a triphenylamine modified cyanophenylenevinylene derivative (TPCI) is reported, which exhibits excellent water solubility and remarkable selectivity and efficiency for producing singlet oxygen (1O2) in water, rendering it perfectly suited for use as an efficient photosensitizer for photocatalytic reactions of hydroazaobenzenes, olefins, and hydrosilanes to obtain functional organic molecules of azoaromatics, carbonyls, and silanols with good functional-group tolerance as well as a broad substrate scope under blue light irradiation. The present study introduces a new type II photosensitizer that enables the synthesis of functional organic molecules through photocatalytic oxidation using visible light in water with high efficiency. [ABSTRACT FROM AUTHOR]

An artificial light-harvesting system (ALHS) was developed in aqueous solution by employing the electrostatic co-assembly of a tetraphenylethylene derivative modified with two sulfonate groups (TPE-BSBO) and hyperbranched polyethyleneimine (PEI) as the energy donors, and 4,7-bis(2-thienyl)-2,1,3-benzothiadiazole (DBT) as the energy acceptors. The ALHS exhibits not only high efficiency in energy transfer and conversion but also a significant enhancement in the generation of reactive oxygen species (ROS), especially superoxide anion radicals (O2˙−), facilitating its utilization in photocatalytic oxidation reactions. [ABSTRACT FROM AUTHOR]

The article titled "Carbon Neutralization" discusses the development of photocatalysts based on non-covalent strategies, which have shown promise in medical and organic materials. The focus is on designing and synthesizing effective organic photosensitizers or photocatalysts that can convert substrates into reactive oxygen species (ROS) under light for efficient photocatalytic reactions. The article specifically highlights the design and synthesis of benzothiazole derivatives (MPBT) that can form supramolecular dimers with CB[8] through host-guest interaction. These dimers produce more superoxide anion radicals, which can be used in the oxidative hydroxylation of arylboric acid. The authors of the article are Xin-Long Li, Yue-Bo Wang, Ying Wang, Rong-Zhen Zhang, Rui-Zhi Dong, Hui Liu, ShengSheng Yu, Ning Han, and Ling-Bao Xing. [Extracted from the article]

[Display omitted] In the present work, we have designed and synthesized a triphenylamine modified cyanophenylenevinylene derivative (TPCI), which can self-assembly with cucurbit[6]uril (CB[6]) and cucurbit[8]uril (CB[8]) through host-guest interactions to form supramolecular complexes (TPCI-CB[6]) and supramolecular polymers (TPCI-CB[8]) in the aqueous solution. The supramolecular assemblies of TPCI-CB[6] and TPCI-CB[8] not only exhibited high singlet oxygen (1O 2) production efficiency as photosensitizers, but also realized the application in the construction of artificial light-harvesting systems due to the excellent fluorescence properties in the aqueous solution. The production efficiency of 1O 2 has been effectively improved after the addition of CB[6] and CB[8] for TPCI, which were applied as efficient photosensitizers in the photooxidation reactions of thioanisole and its derivatives with the highest yield of 98% in the aqueous solution. The excellent fluorescence properties of TPCI-CB[6] and TPCI-CB[8] can be used as energy donors in artificial light-harvesting systems with energy acceptors sulforhodamine 101 (SR101) and cyanine dye 5 (Cy5), in which one-step energy transfer processes of TPCI-CB[6]+SR101 and TPCI-CB[8]+Cy5, and a two-step sequential energy transfer process of TPCI-CB[6]+SR101+Cy5 were constructed to simulate the natural photosynthesis system. [ABSTRACT FROM AUTHOR]