title: The high-throughput synthesis and phase characterisation of amphiphiles: a sweet case study.
abstract: A new method for the discovery of amphiphiles by using high-throughput (HT) methods to synthesise and characterise a library of galactose- and glucose-containing amphiphilic compounds is presented. The copper-catalysed azide–alkyne cycloaddition (CuAAC) “click” reaction between azide-tethered simple sugars and alkyne-substituted hydrophobic tails was employed to synthesise a library of compounds with systematic variations in chain length and unsaturation in a 24-vial array format. The liquid–crystalline phase behaviour was characterised in a HT manner by using synchrotron small-angle X-ray scattering (SSAXS). The observed structural variation with respect to chain parameters, including chain length and degree of unsaturation, is discussed, as well as hydration effects and degree of hydrogen bonding between head groups. The validity of our HT screening approach was verified by resynthesising a short-chain glucose amphiphile. A separate phase analysis of this compound confirmed the presence of numerous lyotropic liquid–crystalline phases.
authors.forename: George C
authors.initials: GC
authors.lastname: Feast
authors.forename: Oliver E
authors.initials: OE
authors.lastname: Hutt
authors.forename: Xavier
authors.initials: X
authors.lastname: Mulet
authors.forename: Charlotte E
authors.initials: CE
authors.lastname: Conn
authors.forename: Calum J
authors.initials: CJ
authors.lastname: Drummond
authors.forename: G Paul
authors.initials: GP
authors.lastname: Savage
mesh_terms: D000480:Alkynes / Q000737:chemistry; D001386:Azides / Q000737:chemistry; D002384:Catalysis; D057930:Click Chemistry; D003300:Copper / Q000737:chemistry; D018360:Crystallography, X-Ray; D003500:Cyclization; D005947:Glucose / Q000138:chemical synthesis* / Q000737:chemistry*; D006017:Glycolipids / Q000737:chemistry*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D013501:Surface-Active Agents / Q000138:chemical synthesis* / Q000737:chemistry*; D017356:Synchrotrons
chemical_list: D000480:Alkynes; D001386:Azides; D006017:Glycolipids; D013501:Surface-Active Agents; D003300:Copper; D005947:Glucose