Synthesis, one- and two-photon properties of poly[9,10-bis(3,4-bis(2-ethylhexyl-oxy)phenyl)-2,6-anthracenevinylene-alt-N-octyl-3,6-/2,7-carbazolevinylene]

• Published in: Journal of polymer science. Part A, Polymer chemistry Vol. 48; no. 2; pp. 463 - 470
• Main Authors: Zhang, Haichang, Guo, Erqian, Zhang, Xueheng, Yang, Wenjun
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15-01-2010; Wiley
• Subjects: 2,6‐anthracene‐vinylene‐based polymers; 6-anthracene-vinylene-based polymers; Applied sciences; conjugated polymers; Copolymers; Cross sections; Derivatives; Exact sciences and technology; Femtosecond; Fluorescence; Lasers; NLO; Organic polymers; photophysics; Physicochemistry of polymers; Polymers with particular properties; Preparation, kinetics, thermodynamics, mechanism and catalysts; Synthesis; Toluene; two-photon absorption; Solution polycondensation; Carbazole derivative copolymer; Fluorescence; Arylene copolymer; Experimental study; Absorption spectrum; 2,6-anthracene-vinylene-based polymers; Organic solution; NLO; Two photon transition; Conjugated copolymer; Preparation; two-photon absorption; Alternating copolymer; photophysics; conjugated polymers
• ISSN: 0887-624X; 1099-0518; 1099-0518
• DOI: 10.1002/pola.23807

The synthesis, one- and two-photon absorption (TPA) and emission properties of two novel 2,6-anthracenevinylene-based copolymers, poly[9,10-bis(3,4-bis(2-ethylhexyloxy)phenyl)-2,6-anthracenevinylene-alt-N-octyl-3,6-carbazolevinyl-ene] (P1) and poly[9,10-bis(3,4-bis(2-ethylhexyloxy)phenyl)-2,6-anthracenevinyl-ene-alt-N-octyl-2,7-carbazolevinylene] (P2) were reported. The as-synthesized polymers have the number-average molecular weights of 1.56 x 10⁴ for P1 and 1.85 x 10⁴ g mol⁻¹ for P2 and are readily soluble in common organic solvents. They emit strong bluish-green one- and two-photon excitation fluorescence in dilute toluene solution (φP₁ = 0.85, φP₂ = 0.78, λem(P1) = 491 nm, λem(P2) = 483 nm). The maximal TPA cross-sections of P1 and P2 measured by the two-photon-induced fluorescence method using femtosecond laser pulses in toluene are 840 and 490 GM per repeating unit, respectively, which are obviously larger than that (210 GM) of poly[9,10-bis-(3,4-bis(2-ethylhexyloxy) phenyl)-2,6-anthracenevinylene], indicating that the poly(2,6-anthracenevinylene) derivatives with large TPA cross-sections can be obtained by inserting electron-donating moieties into the polymer backbone.