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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Nanomedicine (Lond). 2013 Nov;8(11):1865–1873. doi: 10.2217/nnm.13.155

Figure 1. Nonionic surfactant commonly used to prepare niosomes (facing page).

Figure 1

Structures of alkyl ethers and alkyl glyceryl ethers (Brij®; Sigma Aldrich, MO, USA), sorbitan fatty acid esters (Span®; Sigma Aldrich), polyoxyethylene fatty acid esters (Tween®; Sigma Aldrich), Gemini surfactants 1 and 2, and Bola surfactants.