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Luce e benessere.
Luigi Campanella, già Presidente SCI
Da chimico ho sempre rispettato il ruolo della luce nei processi biologici che regolano la nostra vita. Questo rispetto si è trasformato in interesse per la fotochimica soprattutto riferita alla fotocatalisi ed alla capacità di alcuni composti semiconduttori di esercitare all’interno di questo processo un ruolo fondamentale di agenti foto-catalizzatori.
Tale ruolo è strettamente correlato alla capacità di alcune radiazioni luminose di promuovere un elettrone dalla banda di valenza a quella di conducibilità esaltando il passaggio di un composto isolante nella categoria dei conduttori. Partendo da questi dati e dalla analisi completa di queste reazioni i cui prodotti secondari sono radicali liberi dell’ossigeno si resta affascinati dal confronto diretto con quanto avviene nel corpo umano.
La luce è essenziale per la vita umana perché regola il nostro ritmo circadiano, influenzando il sonno e l’umore attraverso la serotonina e la melatonina, il primo ormone del benessere, il secondo ormone del sonno.
La luce stimola inoltre la produzione di vitamina D, importante per la salute di ossa e cervello. La luce naturale migliora le prestazioni cognitive e la concentrazione, mentre la luce artificiale può svolgere un ruolo nel trattamento di disturbi come la depressione stagionale e la sindrome del tramonto.
Oltre a benefici fisici, la luce ha un forte valore simbolico, rappresentando la conoscenza, la verità e la salvezza. Nella filosofia infatti la luce è spesso associata alla conoscenza e all’intelletto, guidando l’essere umano verso la verità e la comprensione del mondo.
La luce naturale regola il ciclo sonno-veglia, ma un’esposizione eccessiva alla luce, soprattutto a quella artificiale notturna, può alterare questo ritmo, riducendo la produzione di melatonina e peggiorando la qualità del riposo. La luce naturale favorisce migliori prestazioni in termini di concentrazione, memoria e reattività. L’uso di luci brillanti può essere utile per i malati di demenza, contribuendo a ridurre i sintomi depressivi e il deterioramento cognitivo.
L’eccessiva luce artificiale, soprattutto nelle città, può alterare i ritmi biologici, portando a un aumento delle ore di sonno più tardive e a disturbi del sonno. Da quanto ora detto emerge, come spesso avviene discutendo di fenomeni naturali, che anche rispetto al ruolo della luce mondo animale e mondo minerale, che sembrano così lontani fra loro, in effetti lo siano molto meno di quanto sembri.
Promozione di un elettrone e produzione di un ormone quanto sono sconnessi e distanti??
Consultati:
Luce e benessere: l’influenza dell’illuminazione | Freelight https://share.google/VvJ3IZKbGEsHM097g
Giulia Fabriani, Storia della luce, Il Saggiatore, 2024
Mechanochemical induced interfacial wetting and radical synergism for enhanced gallium recovery from waste gallium nitride
DOI: 10.1039/D5GC03311J, PaperLanbin Wang, Beikai Zhang, Chaocheng Zeng, Jiadong Yu, Jinhui Li
A mechanochemical strategy integrates interfacial wetting and radical synergism for Ga recovery from waste GaN.
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A three-way deep eutectic solvent integrating solubilization-Brønsted/Lewis acids for efficient 5-hydroxymethylfurfural production from cellulose
DOI: 10.1039/D5GC03124A, PaperXinyi Xing, Rui Hu, Wanni Liu, Xian Shi, Gaojin Lyu, Hui Gao, Siquan Xu
A three-way deep eutectic solvent (DES) integrating solubilization-Brønsted/Lewis acids was developed for the efficient synthesis of HMF in a one-pot method without additional catalysts.
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Life cycle assessment and techno-economic analysis of naphtha cracking electrification using plasma for carbon neutrality
Green Chem., 2025, Accepted Manuscript
DOI: 10.1039/D5GC02106E, PaperSerang Kwon, Seongkyun Im
Plasma cracking of naphtha represents a promising electrification pathway for carbon-neutral ethylene production. It operates at high temperatures (3,000–6,000 K) in non-oxidative environments, achieving superior ethylene yields (50–60%) while eliminating...
The content of this RSS Feed (c) The Royal Society of Chemistry
DOI: 10.1039/D5GC02106E, PaperSerang Kwon, Seongkyun Im
Plasma cracking of naphtha represents a promising electrification pathway for carbon-neutral ethylene production. It operates at high temperatures (3,000–6,000 K) in non-oxidative environments, achieving superior ethylene yields (50–60%) while eliminating...
The content of this RSS Feed (c) The Royal Society of Chemistry
Direct electrochemical deoxygenation reaction of ketones using leaded bronze cathode in formic acid
DOI: 10.1039/D5GC03495G, Paper
Open Access 
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Sebastian Kissel, Marcel Nicolas Perner, Rok Narobe, Kyra Hochadel, Martin Klein, Bertram Cezanne, Philipp Schnieders, Volker Derdau, Siegfried R. WaldvogelA mild, resource efficient electrochemical deoxygenation reaction of ketones with a reusable leaded bronze cathode and recyclable electrolyte is reported. Simple workup by phase separation provides pre-requisites for potential technical applications.
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Metal-free synthesis of diverse 2-deoxy-β-N-glycosides through regio- and stereospecific aminoselenenylation of glycals
DOI: 10.1039/D5GC02716K, PaperYimeng Xiong, Xiao Tan, Wenjie Yang, Shao-Fei Ni, Yuanwei Dai
An efficient and metal-free method to access structurally diverse 2-phenylseleno-β-N-glycosides and 2-deoxy-β-N-glycosides through regio- and stereospecific aminoselenenylation of glycals with commercially available N-heterocycles was disclosed.
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A visible light promoted cascade cyclization reaction via a PCET process: easy access to indolinone-fused polycycles
DOI: 10.1039/D5GC03208C, CommunicationYuxuan Han, Jie Chen, Hong Zhang, Xiuling Cui
Indolinone-fused polycycles were rapidly synthesized via a PCET process under Brønsted base- and transition metal-free conditions, forming C–N and C–C bonds in one pot with atom utilization up to 98%, and produced water as the sole by-product.
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Insights into the Excited State of Phenalenyl-Based Photocatalyst for Facile Divergent Synthesis of Sulfoxides and Sulfones
Green Chem., 2025, Accepted Manuscript
DOI: 10.1039/D5GC02770E, PaperVishali Pathania, Mall Akanksha, Shubhangi Majumdar, Pramit Kumar Chowdhury, Sudipta Raha Roy
A divergent and tunable photocatalytic protocol has been established under mild and green conditions by exploiting two distinct excited-state pathways of a phenalenyl-based organic photocatalyst. Femtosecond transient absorption spectroscopy (fs-TAS)...
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DOI: 10.1039/D5GC02770E, PaperVishali Pathania, Mall Akanksha, Shubhangi Majumdar, Pramit Kumar Chowdhury, Sudipta Raha Roy
A divergent and tunable photocatalytic protocol has been established under mild and green conditions by exploiting two distinct excited-state pathways of a phenalenyl-based organic photocatalyst. Femtosecond transient absorption spectroscopy (fs-TAS)...
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From lithium-last technology to lithium-first technology: technical mapping and collaborative strategies for sustainable lithium-ion battery recycling
DOI: 10.1039/D5GC02804C, Critical ReviewJiefeng Xiao, Bo Niu, Pengwei Li, Weiqiang Chen, Zhenming Xu
The lithium-ion battery (LIB) industry faces a critical challenge in achieving sustainable resource circularity amid surging global demand.
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Photoelectrocatalytic heteroarene C(sp2)–H borylation
DOI: 10.1039/D5GC03231H, CommunicationLina Song, Jin-Liang Zhuang, Peng Xiong, Hai-Chao Xu
A photoelectrocatalytic strategy enables direct C(sp2)–H borylation of (hetero)arenes with Lewis base–borane complexes under mild, external-oxidant-free conditions.
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Correction: Advancing solar-driven redox processes: pyrene-based covalent organic frameworks for efficient environmental remediation and H2O2 production
Green Chem., 2025, 27,10033-10033
DOI: 10.1039/D5GC90151K, Correction Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Yaxuan Zheng, Siyu Han, Yuxin Sun, Zhangpei Chen, Yuqiu Huo, Jianshe Hu
The content of this RSS Feed (c) The Royal Society of Chemistry
DOI: 10.1039/D5GC90151K, Correction
Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Yaxuan Zheng, Siyu Han, Yuxin Sun, Zhangpei Chen, Yuqiu Huo, Jianshe HuThe content of this RSS Feed (c) The Royal Society of Chemistry
Correction: Atom-efficient aldol condensation via magnetically recyclable nanoreactors: sol–gel imprinting enables template-switchable triple selectivity
Green Chem., 2025, 27,10032-10032
DOI: 10.1039/D5GC90150B, Correction Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Ya Liu, Haiyan Jing, Yi Hao, Xuemeng Tian, Yue Wang, Xueyi Liu, Ruixia Gao
The content of this RSS Feed (c) The Royal Society of Chemistry
DOI: 10.1039/D5GC90150B, Correction
Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Ya Liu, Haiyan Jing, Yi Hao, Xuemeng Tian, Yue Wang, Xueyi Liu, Ruixia GaoThe content of this RSS Feed (c) The Royal Society of Chemistry
Switchable mechanical-force-induced selective reduction of nitroarenes via piezoelectric perovskite materials
DOI: 10.1039/D5GC02613J, PaperMinxia Liu, Huiying Chen, Fiona Jiani Zhang, Mingxiang Zhu
A perovskite mechanocatalytic strategy enables switchable nitroarene reduction to anilines or azoxybenzenes under mild conditions, achieving unprecedented selectivity via intermediate regulation without complex catalysts or harsh conditions.
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Copper-catalyzed amidoalkylation of amines via C–C bond cleavage from cyclic oxaziridines
DOI: 10.1039/D5GC03001C, CommunicationXin-Xin Liu, Shaohong Wang, Yuan Zhang, Fan Yang, Hong-Jie Miao, Peng-Chen Ma, Li-Na Guo, Pin Gao
We have successfully established an efficient copper-catalyzed C–C bond cleavage of cyclic oxaziridines and the C(sp3)-N coupling reaction with amines under mild and redox neutral conditions with 100% atom-economy.
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Lignin refinement based on efficient thermo-photo-catalysis of Ru–RuO2/TiO2-deep eutectic solvents
DOI: 10.1039/D5GC02098K, PaperHekun Ding, Yue Pan, Ao Zhan, Jie Lv, Yang Yang, Zhiyuan Yang, James H. Clark, Qiang Yu
A highly effective thermo-photo-catalysis system was developed combining deep eutectic solvents (DESs) and a Ru–RuO2/TiO2 composite to enable efficient catalytic depolymerization of lignin into phenol under clean and mild conditions.
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Electroenzymatic cascade synthesis of 2,3-diaminophenazine on HRP-ZnGa2O4 nano-biohybrids
DOI: 10.1039/D5GC03726C, PaperYuxuan Cheng, Zhe Wang, Siqi Li, Meixuan Li, Shuni Li, Xue Xiao, Yucheng Jiang, Yu Chen
In this work, a novel nano-biohybrid has been developed for the efficient synthesis of 2,3-diaminophenazine (DAP), a biologically significant heterocyclic compound, via an electroenzymatic cascade catalysis system.
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Advancing lignocellulosic conversion though biosensor-enabled metabolic engineering
DOI: 10.1039/D5GC03618F, Tutorial Review
Open Access 
  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Qi Gan, Jianli Zhang, Xinyu Gong, Yusong Zou, Yajun YanBiosensor-aided metabolic engineering is advancing the conversion of lignocellulosic biomass by enabling regulation and optimization of microbial production pathways.
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Improved rare earth element recycling using a sustainable diglycolamide-based hydrophobic eutectic solvent
DOI: 10.1039/D5GC01707F, Paper
Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.B. Bernicot, G. Arrachart, S. Dourdain, N. Schaeffer, A. C. Dias, S. Pellet-RostaingA hydrophobic eutectic solvent is shown to efficiently recover rare earth elements from waste leachates with a lower environmental impact than the comparable traditional solvent extraction system.
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Photoinduced carbonylative multicomponent reaction of anilines and arylaldehydes
DOI: 10.1039/D5GC02973B, Communication
Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Mao-Lin Yang, Xiao-Feng WuA photoinduced carbonylative amination strategy with arylaldehydes, enabling the efficient synthesis of valuable α-aminoketones has been developed.
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Phosphatidylcholine-driven cell-like assembly of lignin for reinforcing and toughening rubber materials
DOI: 10.1039/D5GC01947H, PaperJunqi Zhang, Jianlong Wen, Zhenwei Liu, Fangwei Ling, Zhengtian Xie, Yijing Nie, Jinrong Wu
This work employs phosphatidylcholine to modulate the polarity of lignin, enabling lignin to form a self-assembled ‘cell-like structure’ within HPIP. The resulting composites achieve a remarkable strength of 26 MPa while maintaining excellent recycling capability.
The content of this RSS Feed (c) The Royal Society of Chemistry