Allotropy is the ability of an element to exist in different structural forms while in the same state of matter. For example, elemental carbon can exist in many well-known forms such as diamond, graphite, fullerenes and more recently, carbon nanotubes. Such different things yet the same element. I find the phenomenon very fascinating, especially because a pure and unadulterated form of a single element can exhibit so many different properties just by changes in its core structural form.

But why the fascination especially with (elemental) allotropes alone? Chemistry is all about chemical transformations, replace the hydrogen in hydrogen sulfide with iron and you get Fool’s gold but replace the hydrogen with cadmium and you can make photocells. Fleming discovered penicillin in 1928 and in a few decades we have been able to make many analogues of it. Isn’t it fascinating enough to be able to build complex molecules from smaller simpler pieces? To be able to play around at the molecular level? Yes, that fascinates me equally but what is special about allotropy is that it never requires any external ingredients to be added to achieve the transformation. Though I must admit that I like the phenomenon more for its philosophical meaning.
What if we are able to apply the concept of allotropy in real life?