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Copper(i) catalyzed alkyne azide cycloaddition is the quintessential example of ‘Click Chemistry’, provides an adaptable platform for the synthesis of nanogels for sustained drug release at targeted sites owing to their better biocompatibility.

Food waste has become a serious issue in recent years. Due toincrease in over population, solid waste also more generated and affect public health and environment. Food wastes produce methane gas that results greater impact on global warming than carbon dioxide. The composting technology is one of the alternatives, as it is the highest form of recycling of biodegradable solid waste. The study was undertaken to utilize food waste generated, into organic manure using effective micro-organism. A total of 100 kg of food wastes were collected from 100 households in Allahabad over 15 days. The pit was dug for composting using Effective Microorganisms (EM) and natural composting for remediation of organic contaminants. The compost was analyzed and the effectiveness of compost was studied through cultivation of vegetables at households. Results revealed that EM compost had fast decomposition rate, rich in nutrients, more microbial activities, good germination and more yields compared with natural compost. Thus, the study paves way for effective management of food waste in order to minimize potential human and environment risks and composting using effective microorganisms as an option of waste management operation that is cheap, Eco- friendly and sustainable. Keywords: Food waste, Effective microorganisms, Remediation, Compost, Eco­friendly

Copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) is a resourceful and stereospecific methodology that has considerably yielded promising 1,2,3-triazole-appended "click" scaffolds with the potential for selective metal ion recognition. Based on "click" methodology, this report presents a chemosensor probe (TCT) based on 4

The World Health Organization (WHO) reports on six major air pollutants, namely particulate matter, ground level ozone, carbon monoxide, sulfur oxides, nitrogen oxides and lead. Effects of these pollutants are seen in air, soil and water. This air pollutant possesses different impact on the human health, climate changes, green-house effects and global warming. Acid rain, global warming, greenhouse effect and climate changes have an important ecological impact on air pollution. Neurological effects have been observed in adults and children after exposure to air pollutants. Man is causing damage to air, water and soil. Our atmosphere on global scale is highly polluted. In this paper, our interest is mainly to focus on these pollutants, as they are related to more severe problems in human health and environmental impact. Keywords: Air pollution, Environment, Clean air, Public health, Sustainable development.

In the extensive terrain of catalytic procedures for the synthesis of organic molecules, metal–organic frameworks (MOFs) as heterogenous catalysts have been investigated in a variety of chemical processes, including Friedel–Crafts reactions, condensation reactions, oxidations, and coupling reactions, and utilized owing to their specific properties such as high porosity, tuneability, extraordinary catalytic activity, and recyclability. The eminent copper-tailored MOF materials can be exceptionally dynamic and regioselective catalysts for click reactions (1,3-dipolar cycloaddition reaction). Considering the fact that Cu(I)-catalyzed alkyne–azide cycloaddition (CuAAC) reactions can be catalyzed by several other copper catalysts such as Cu (II)-β-cyclodextrin, Cu(OAc)2, Fe3O4@SiO2, picolinimidoamide–Cu(II) complex, and Cu(II) porphyrin graphene, the properties of sorption and reusability, as well as the high density of copper-MOFs, open an efficient and robust pathway for regimented catalysis of this reaction. This review provides a comprehensive description and analysis of the relevant literature on the utilization of Cu-MOFs as catalysts for CuAAC ‘click’ reactions published in the past decade.