A hollow molecular sphere has been created by chemists in South Korea by polymerization of simple, flat building blocks without any aid of template for creation of 3 D shapes. Cucurbituril which is a hollow building block was used in the form of molecular ribbons. The name Cucurbituril is derived from the plant family to which pumpkin belongs. The hollow cylinders were polymerized into higher order structures and were modified with 12 allyl groups pointing radially outwards. A polymerization reaction was triggered with the aid of linker and UV light. As a result a normal bell shaped curve distribution of sphere sizes is obtained for every set of physical and chemical conditions. The researchers also showed that polymerised nanocapsules could accommodate guest molecules like carboxyfluorescein and also carry surface modifications which could lead them towards specific targets and this combination could be used in imaging and targeted delivery too.