Photophysics of anthracene polymers: fluorescence, singlet energy migration, and photodegradation

Abstract

Poly(9-anthrylmethyl methacrylate) ( ), poly [(10-phenyl-9-anthryl)methyl methacrylate] (PPA), and poly (9-anthrylmethyl ethenyl ether) (PAE) were prepared and their photophysics studied. The fluorescence spectra of these polymers are very dependent on the degree of anthracene crowding. The singlet energy migration constant (A,) was estimated to exceed 2 X 10~5 cm2/s for PPA but to be essentially 0 for PAE and(the latter displaying the largest fluorescence shift with respect to its monomeric model compound of all the polymers studied). Singlet-singlet annihilation was observed for PPA, which strengthens the finding that , ^0. Polymers containing ester groups were photolabile with respect to loss of anthracene groups, and especially has a strong tendency to be photoreactive.

Excited-State Dynamics in Rigid Media: Evidence for Long-Range Energy Transfer

“…Anthracen-9-ylmethyl methacrylate was synthesized through a modified method. 38 To a mixture containing 9-anthracene methanol (6.0 g, 29 mmol), triethylamine (6 mL), pyridine (4 mL), and THF (24 mL), methacryloyl chloride (4.2 mL, 43 mmol) was added slowly at 0°C. After the addition, the mixture was warmed to room temperature and stirred for 1 h. Water was added slowly to quench the reaction.…”

Well‐defined diblock copolymers possessing fluorescent and metal chelating functionalities as novel macromolecular sensors for amines and metal ions

“…A widely used fluorescent molecule known for its interesting photophysical properties is anthracene, a polycyclic aromatic hydrocarbon 8–10. Because of the lack of interaction with polymeric materials, the anthracene group has been selected by various research teams to be introduced into polymers 11.…”

Fluorescence Study on the Dynamics and Structure of Polymer Chain I. Intramacromolecular Photo-crosslinking Reaction of a Polymer Containing Anthryl and Eosinyl Moieties in Dilute Solution

“…15 On the other hand, the mean distance between anthryl moieties in the sample polymer was calculated to be 9.1 nm. This distance is much larger than the critical radius of the energy migration.…”