Intercalation of organic sensitisers into layered europium hydroxide and enhanced luminescence property

Two organic sensitisers 4-biphenylcarboxylate (BPC) and terephthalate (TA) were intercalated into the gallery of layered europium hydroxide (LEuH). PL spectra tests indicated that BPC markedly enhanced the red luminescence of Eu3+ due to efficient energy transfer between BPC and Eu3+, forming a contrast to intercalated TA and the starting NO3- anions in the gallery. The energy level matching of the organic guests and Eu3+ was also discussed to explain the energy transfer from sensitiser to Eu3+.