A π-conjugated polymer consisting of an alloxazine-6,9-diyl unit and 9,9-dihexylfluorene-2,7-diyl units was prepared from a newly synthesized monomer by a Pd-complex-catalyzed condensation reaction. A novel model compound, 6,9-bis(9,9-dihexylfluorene-2-yl)alloxazine, was also synthesized by the same reaction using the monomer. The M_n and M_w of the polymer are 13,500 and 21,600, respectively. The onset position of the UV-vis spectrum of the polymer is observed at a longer wavelength (λ_onset = 540 nm) than the model compound (λ_onset = 520 nm), thus revealing the presence of a π-conjugated system extending along the polymer chain. The polymer and model compound are both photoluminescent in solution (λ_em = 581 nm for the polymer and λ_em = 557 nm for the model compound), and their photoluminescence (PL) gradually decreases with the addition of nucleosides (adenosine (A) and guanosine (G)) as well as metal ions (Cu(I), Cu(II), and Zn(II)). This decrease in the PL intensity upon the addition of nucleosides and metal salts is most likely caused by electron transfer from the initially excited polymer to the complexes generated by hydrogen bonding between the polymer alloxazine unit and the nucleoside. Stern-Volmer constants of the polymer are K_SV(A) = 0.8 × 10³ M⁻¹, K_SV(G) = 7.4 × 10³ M⁻¹, K_SV(Cu(I)) = 98 × 10³ M⁻¹, K_SV(Cu(II)) = 560 × 10³ M⁻¹, and K_SV(Zn(II)) = 4.1 × 10³ M⁻¹ and those of the model compound are K_SV(A) = 0.3 × 10³ M⁻¹, K_SV(G) = 1.4 × 10³ M⁻¹, K_SV(Cu(I)) = 4.2 × 10³ M⁻¹, and K_SV(Zn(II)) = 4.1 × 10³ M⁻¹. Cyclic voltammetry analysis of the polymer and model compound revealed their electrochemically active nature.

由新合成的单体通过Pd络合物催化的缩合反应制备由四氧嘧啶-6，9-二基单元和9，9​​-二己基芴-2，7-二基单元组成的π共轭聚合物。还使用单体通过相同的反应合成了新型模型化合物6,9-双（9,9-二己基芴-2-基）四恶嗪。聚合物的 M _n和M _w分别为13,500和21,600。在 比模型化合物（λ_起始）更长的波长（λ_起始= 540 nm）处观察到聚合物的UV-vis光谱的起始位置。 ＝ 520nm），因此揭示存在沿着聚合物链延伸的π-共轭体系。所述聚合物和模型化合物在溶液中都光致发光（λ _EM  =对于该聚合物581纳米和λ _EM  =对于模型化合物557纳米），和它们的光致发光（PL）通过添加核苷（腺苷（A）和逐渐减小鸟嘌呤（G））以及金属离子（Cu（I），Cu（II）和Zn（II））。添加核苷和金属盐后PL强度的降低很可能是由于电子从最初激发的聚合物转移到由聚合物Alloxazine单元和核苷之间的氢键生成的络合物而引起的。聚合物的Stern-Volmer常数为K _SV（A）= 0.8×10 ³  M ^-1，K _SV（G）= 7.4×10 ³  M ^-1，K _SV（Cu（I））= 98×10 ³  M ^-1，K _SV（Cu（II） ）= 560×10 ³  M ^-1，K _SV（Zn（II））= 4.1×10 ³  M ^-1，模型化合物的K _SV（A）= 0.3×10 ³  M ^-1，K _SV（G）= 1.4×10 ³  M ^-1，K _SV（Cu（I））＝ 4.2×10 ³  M ^-1，K _SV（Zn（II））＝ 4.1×10 ³  M ^-1。聚合物和模型化合物的循环伏安分析表明它们具有电化学活性。