Abstract
A cyclen backbone was utilized to study the effect of backbone rigidity on Eu(iii) luminescence sensitization using a 1,2-HOPO derivative and 2-thenoyltrifluoroacetonate (TTA) as chromophores. The restriction of molecular movement of Eu-Cy-HOPO brought about by the increased rigidity provided a tightly packed coordination environment for the octadentate Eu(iii) center which resulted in the highest overall quantum yield (30.2%) and sensitization efficiency (64.6%) among 1,2-HOPO sensitized Eu(iii) complexes. Eu-Cy-HOPO is also the first 1,2-HOPO-based lanthanide complex to emit Eu(iii) luminescence under two-photon excitation.
Original language | English |
---|---|
Pages (from-to) | 4550-4559 |
Number of pages | 10 |
Journal | Chemical Science |
Volume | 10 |
Issue number | 17 |
DOIs | |
Publication status | Published - 1 Jan 2019 |
ASJC Scopus subject areas
- General Chemistry