Abstract
Alternating and random copolymers of 1-naphthylmethyl methacrylates (1NpMMA) and/or 2-vinylnaphthalene (VNp) were synthesized, and their fluorescence properties compared in tetrahydrofuran (THF) or 1,4-dioxane. The alternating copolymer of 1NpMMA and styrene (a-1NpSt) was found to form an excimer as freely as the corresponding random copolymer, and poly(1NpMMA- alt-VNp) (a-1NpVNp) also showed an excimer emission, indicating that excimer formation between the naphthyl (Np) chromophores in the alternating methacrylate sequences cannot be inhibited. The observation of monomer emission for 1NpVNp-type copolymers suggests that energy transfer occurs favourably from the 1NpMMA units to the VNp ones at room temperature, and that the transfer in the opposite direction, i.e., the transfer from the VNp units to the 1NpMMA ones, is possible at higher temperatures. The fluorescence-quenching study, however, showed no enhancement of the quenching efficiency for a-1NpVNp at room temperature. The predominant one-way energy transfer might not facilitate the long-range energy migration along the polymer chain.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.