ionophores

/AY0 AA0 N AH0 F AO1 R Z/
noun
  1. 1

    Any substance that can transfer ions from a hydrophilic medium (such as water) to a hydrophobic medium, or across a biological membrane, normally by forming a reversible complex with it; an ion carrier

Source: https://en.wiktionary.org/wiki/ionophore, https://en.wiktionary.org/wiki/ionophores