DSPE-PEG4-DBCO is a PEG linker containing DSPE and DBCO moieties. The DSPE-PEGs have been FDA approved for medical applications. The hydrophobic properties of the DSPE allow for the encapsulation and congregation of other hydrophobic drugs. The hydrophilic PEG linker increases the water solubility of the overall compound allowing for the delivery of the drug. The DBCO group can be used for copper-free Click Chemistry reactions.