Triethylene glycol chemical structure

Fig. 6 EGF-containing chimeric proteins anchored to the Ni-chelated surface through coordination. Bold lines in the molecular structures represent chelate bonding. TEG-thiol triethylene glycol-containing alkanethiol. Reproduced from Nakaji-Hirabayashi et al. [87] with permission from American Chemical Society, copyright 2009...

Ligands A, B, and C have similar chemical structures. They all carry an end thiol functional group (for attaching onto a gold surface of a QCM device), an alkane chain (to form the well-packed SAM ), and a triethylene glycol linker (to prevent nonspecific adsorption ). The resulting 1 1 mixed SAMs... 

In the formation of microemulsions, both ionic and nonionic surfactants are used. Cosurfactants are alcohols or amines [1,5,6,13,14]. It has been shown [23] that straight chain amines are quite different from their corresponding alkanols as cosurfactant. For example, butylanfine is a more effective one on mass basis than triethylene glycol monobutyl ether. It is because the primary amine head group is more hydrophilic than alcohol, nitrile, carboxylic add, ketone, and aldehyde head groups. In the case of amine cosurfactants, the addition of acid makes the cosurfactant more hydrophilic whereas the addition of base makes it less hydrophilic. The relative degree of hydrophilidty at the oil/water interface determines the volume of microemulsion formation. Microanulsions represent complex phase behavior, and the chemical structure of the cosurfactant has a pivotal role to play on their phase behaviors. 

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