Abstract
Photostable and efficient red-emitting host–guest materials have been obtained employing a ship in a bottle procedure by loading 2-thenoyltrifluoroacetone (tta) or tta and 1,10-phenthroline (phen) from gas phase into the channels of Eu3+-ZL crystals that exhibit disc-shaped morphology followed by treatment with ammonia gas. The resulting Eu3+(tta)x-ZL and Eu3+(tta)x(phen)y-ZL host–guest materials were characterized with XRD, SEM, absorption and photoluminescence spectroscopy. Two key findings have been made in this work: (1) The emission intensity and the lifetime of Eu3+ ions of the host–guest materials can be significantly increased by treatment with ammonia gas, and (2) the encapsulated europium(III) complexes in ZL crystals show remarkably increased photostability.
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