Fluorescence photoswitching of a diarylethene-perylenebisimide dyad based on intramolecular electron transfer.
A fluorescent photochromic molecule, which is composed of a photochromic diarylethene (DE) and a fluorescent perylenebisimide (PBI), was synthesized and its fluorescence photoswitching was studied. The fluorescence quantum yield of the open-ring isomer is constant irrespective of solvent polarity, while that of the closed-ring isomer decreases with an increase in the dielectric constant of solvents. Femtosecond time-resolved transient and fluorescence lifetime measurements revealed that the fluorescence quenching of the closed-ring isomer is attributed to the intramolecular electron transfer from the PBI chromophore to the DE unit.
Fukaminato
Tuyoshi
T
Research Institute for Electronic Science, Hokkaido University, N20, W10, Kita-ku, Sapporo 001-0020, Japan. tuyoshi@es.hokudai.ac.jp
Tanaka
Masaaki
M
Doi
Takao
T
Tamaoki
Nobuyuki
N
Katayama
Tetsuro
T
Mallick
Arabinda
A
Ishibashi
Yukihide
Y
Miyasaka
Hiroshi
H
Irie
Masahiro
M
D003499:Cyclic S-Oxides / Q000138:chemical synthesis / Q000737:chemistry*; D004579:Electron Transport; D005456:Fluorescent Dyes / Q000737:chemistry*; D007094:Imides / Q000138:chemical synthesis / Q000737:chemistry*; D007536:Isomerism; D010569:Perylene / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013876:Thiophenes / Q000138:chemical synthesis / Q000737:chemistry*; D013997:Time Factors
D003499:Cyclic S-Oxides; D005456:Fluorescent Dyes; D007094:Imides; D013876:Thiophenes; C510697:perylene bisimide; D010569:Perylene