1027100-93-1Relevant articles and documents
Rod-shaped oligophenyleneethynylenes modified by donor and acceptor groups in a block manner: Synthesis and light-emitting characteristics
Ochi, Takanori,Yamaguchi, Yoshihiro,Kobayashi, Shigeya,Wakamiya, Tateaki,Matsubara, Yoshio,Yoshida, Zen-Ichi
, p. 794 - 795 (2007)
Highly efficient blue light emmitters represented by BL-5 (Φf = 0.96, λem = 455 nm in CHC13) and BL-8 (Φf = 0.98, λem = 464nm in CHCl3) are created by block modification of oligophenylene ethynylenes with donor and acceptor groups. A linear relationship with positive slope between Φf and the movability of the energetically equivalent dipolar structure unit is found for the first time. Copyright
Block modification of rod-shaped π conjugated carbon frameworks with donor and acceptor groups toward highly fluorescent molecules: Synthesis and emission characteristics
Ochi, Takanori,Yamaguchi, Yoshihiro,Wakamiya, Tateaki,Matsubara, Yoshio,Yoshida, Zen-Ichi
experimental part, p. 1222 - 1231 (2008/10/09)
To create organic molecules that are highly fluorescent at a longer wavelength region, we investigated the synthesis (using Pd-catalyzed cross-coupling) and photophysical properties (Φ f, λ em, τ , λ abs, and ε ) of the following π conjugated molecular rods consisting of p-phenyleneethynylene units modified by donor (OMe) and/or acceptor (CN) groups: (1) side-donor modification systems (SD systems), (2) side-acceptor modification systems (SA systems), and (3) systems consisting of a donor block and an acceptor block (BL systems). As a consequence, very high Φ f values (>0.95) were obtained for BL systems. Bathochromic shifts of λ em for the same π conjugation length were largest for BL systems. Thus we succeeded in creating highly efficient light emitters at a longer wavelength region by block modification (e.g., Φ f = 0.97, λ em = 464 nm for BL-9). Considerably intense solid emission (Φ f ~ 0.5) at a longer wavelength region (500- 560 nm) was also found for BL systems. It has been found that BL-6 and BL-8 exhibit interesting two photon absorption characteristics. This journal is The Royal Society of Chemistry.