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Summary: Solar light active oxygenation reactions and coenzyme regenerations are play crucial role in the area of pharmaceutical industry. The highly selective and efficient synthesis of oxygen‐containing molecules in an environmental friendly manner is challenging at both industrial and laboratory level. Here, we proposed a new synthetic approach for oxygenation reactions along with coenzyme regenerations using flexible‐activated carbon cloth (FACC) oriented covalent (C) tetrakis(4‐carboxyphenyl) porphyrin (P) and thiourea (T)‐based framework (F), namely, CPTF@FACC photocatalyst. CPTF@FACC exhibits excellent solar light‐harvesting ability, well‐distinct photocatalytic centers, high molar extinction coefficient, excellent charge transport ability, and suitable optical band gap, which make the photocatalyst more efficient for oxygenation (sulfoxidation and epoxidation) reactions along with coenzyme regenerations. The oxygenation reactions were carried out in isopropyl alcohol via in situ production of hydrogen peroxide (H2O2) under solar light using CPTF@FACC photocatalyst with high yields (~97%‐98%). Finally, the CPTF@FACC photocatalyst also show a benchmark example in the coenzymes regeneration with high yields 81.1% and 73.1% for NADH and NADPH in 2 h, respectively. [ABSTRACT FROM AUTHOR]

Summary: Direct conversion of sunlight into value‐added chemicals through artificial photosynthesis has been recognized as one of the most promising ways to address the global energy needs and to utilize the sustainable energy source. Even though the various semiconducting materials have been used for the solar‐driven production of chemicals, many experimental efforts have been still focusing on developing clean and reusable photocatalysts. In this study, we report the new metal‐free graphitic carbon nitride (g‐C3N4) composite including anthracene moieties as a primary photosensitizer. The morphological and electronic structure of anthracene‐based g‐C3N4 (An‐g‐C3N4) composite were characterized by optical spectroscopies, electrochemical measurements, and theoretical calculations based on density‐functional theory. The An‐g‐C3N4 composite exhibited outstanding photocatalytic efficiency for the regenerations of NAD(P)H cofactors owing to the prominent charge‐transferred character and the superb light absorption. This study demonstrates that the catalytic reaction employing the combination of An‐g‐C3N4 photocatalyst and Z‐scheme nature would be a suitable option for artificial photosynthesis. [ABSTRACT FROM AUTHOR]

Summary: Development of ecofriendly and low‐cost highly efficient photocatalysis is of importance in the field of chemical synthesis. Currently, various metals‐based organic materials, metal oxide nanoparticles, and metal nanomaterials have been urbanized as light harvesting photocatalysts for direct carbon (C)‐hydrogen (H) arylation of aryl diazonium salts and heteroarenes. These light harvesting photocatalysts, however, still suffer from poor stability, reusability problem, high cost, or less selectivity. Herein, we report the fabrication of a novel chitosan‐based fluorescein isothiocyanate (CBFITC) film photocatalyst and demonstrate its tremendous photocatalytic activity, high yields (97 ± 0.015%), selectivity (99%), and reusability to catalyze the metal free solar‐light‐mediated direct CH arylation of aryl diazonium salts and heteroarenes at ambient temperature. Moreover, CBFITC film photocatalyst can be recycled more than five times without loss of activity, verifying this photocatalyst excellent light harvesting ability and stability. The present approach to fabricate a metal‐free film photocatalyst with the suitable band gap will be a new platform for efficient photocatalytic reaction and provide a new insight into the solar chemical synthesis. [ABSTRACT FROM AUTHOR]