Abstract Carbon quantum dots (CQD) were prepared from three different precursors and by bottom-up synthesis methods: classical pyrolysis of citric acid (CAP), microwave irradiation glucose (GM), hydrothermal treatment glucosamine hydrochloride (GAH). CQD further functionalized using various nitrogen-containing compounds: 6-aminohexanoic acid, 1,6-diaminohexane, N-octylamine, dimethylamine, tryp...

Rapid rise in human population creates so many problems in developing countries like India. As population increased natural resources declined and increase pollution due to increased demands of urbanization, employment and healthcare. Since ancient time contraceptives have been used to control population including natural methods. In modern time many natural and synthetic agents have been used ...