Water-capturing agent and organic EL device

An organic EL device comprising:

• an organic EL light-emitting portion having a hole-injecting layer, a hole-transporting layer and a light-emitting layer formed of an organic compound laminated between a pair of electrodes at least one of which is transparent;
• a sealed container for sealing the organic EL light-emitting portion;
• and
• a water-capturing agent placed in the sealed container, wherein said water-capturing agent is represented by the chemical structural formula (1).
• wherein R are independently a substituent selected from the group consisting of a substituted or non-substituted alkyl group, a substituted or non-substituted alkenyl group, a substituted or non-substituted aryl group, a substituted or non-substituted cycloalkyl group, a substituted or non-substituted alkoxy group, a substituted or non-substituted acyl group and a substituted or non-substituted heterocyclic group having an unsaturated bond and one or more of a hydrogen atom and a carbon atom, and wherein M is a metal, and
• wherein R′ are independently a substituent selected from the group consisting of a substituted or non-substituted alkylene group, a substituted or non-substituted alkylidene group, a substituted or non-substituted alkenylene group, a substituted or non-substituted alkenylidene group, a substituted or non-substituted arylene group, a substituted or non-substituted cycloalkylene group, a substituted or non-substituted cycloalkylidene group, a substituted or non-substituted oxyalkylene group, a substituted or non-substituted divalent radical derived from an acyl group and a divalent radical derived from a substituted or non-substituted heterocyclic group having an unsaturated bond and one or more of a hydrogen atom and a carbon atom.