Shining light on green chemistry: BODIPY-infused porphyrin nanocomposite-enzymatic photocatalyst boosts selective aldehydes hydrogenation and organic transformation under solar spectrum.

• A photo bio-reactor system has been constructed consist of light harvesting complex formed via poly-condensation method. • The photocatalyst synthesized is a metal-free, cost effective and light harvesting moiety which have capability to perform photocatalytic activities. • The light harvesting photocatalyst have ability to regenerate NADH from NAD+ co-factor. • Bio-transformation of aldehyde (benzaldehyde and formaldehyde) to respective alcohols (reduction) takes place simultaneously with NADH regeneration. • This work also deals with performing organic transformation i.e. benzylamines to imines in an effective manner. Photo-bio enzyme coupled biotransformation solar radiation driven processes grasp promising in the production of solar driven organic chemicals. Here we reported the synthesis and development of (NH 2) 4 TPP@BODIPY photocatalyst, which was constructed from 5,10,15,20 tetrakis (4 amino phenyl) porphyrin and BODIPY {5,5-difluoro-3,7-bis((E)-4-nitrobenzylidene)-10-(4-nitrophenyl)-5,7-dihydro-3H-4l4,5l4-dipyrrolo[1,2-c:2′,1′-f][1,3,2]diazaborinine} molecule through poly-condensation mechanism resulting in the composite formation which manifest excellent light harvesting properties and photocatalytic reactions with suitable satisfactory band gap and formation of huge electrons channels which bears the organic transformation (98 %) and photo-regeneration of NADH (66.92 %) in 60 min which further enhances reduction of aldehyde resulting alcohol production. The highly selective aldehyde hydrogenation process is proposed via coordination of alcohol dehydrogenase with (NH 2) 4 TPP@BODIPY assistant reduces from the coupling process; regeneration of nicotinamide adenine dinucleotide (NADH). Our results show an excellent benchmark for the NAD+ co-factor coupled solar-driven alcohol production via (NH 2) 4 TPP@BODIPY photocatalyst. [ABSTRACT FROM AUTHOR]