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Green and Red Three‐Photon Upconversion from Polymeric Lanthanide( III ) Complexes
Author(s) -
Wong KaLeung,
Kwok WaiMing,
Wong WingTak,
Phillips David Lee,
Cheah KokWai
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200460576
Subject(s) - lanthanide , photon upconversion , photochemistry , ligand (biochemistry) , energy transfer , singlet state , fluorescence , absorption (acoustics) , green light , chemistry , excitation , materials science , ion , optoelectronics , excited state , organic chemistry , atomic physics , optics , physics , chemical physics , blue light , biochemistry , receptor , quantum mechanics , composite material
Red light, green light! Emission through three‐photon upconversion processes from polymeric organic–lanthanide complexes (lanthanide, Ln=Tb, Eu) was observed upon excitation of the tripodal organic ligand at 845 nm. Multiphoton absorption by the ligand followed by a transfer of energy to Ln (see picture; S=singlet state, T=triplet state) gives rise to characteristic Eu (red) or Tb (green) emission.