A new perfume delivery system has been developed by chemists in the UK as a way of keeping sweet smells around for longer. This cleverly designed system tags fragrance alcohols – such as 2-phenylethanol, which has a rose-like scent – onto odourless ionic liquids. In the tagged form, the material has no smell. However, when it comes into contact with water, the link is broken and the fragrance is released – along with its sweet scent.
Fragrance alcohols are typically volatile, so their scent can be lost soon after a perfumed product is applied. A lot of research has been dedicated to finding ways to keep scents around for longer.
Read the original journal article in ChemComm:
Pro-fragrant ionic liquids with stable hemiacetal motifs: water-triggered release of fragrances
H. Q. Nimal Gunaratne, Peter Nockemann and Kenneth R. Seddon
Chem. Commun., 2015,51, 4455-4457
DOI: 10.1039/C5CC00099H, Communication