The present study sought to obtain a hyperbranched polyester polyol derivative with fluorescent properties. Initially, a 4-((4-(9H-carbazol-9-yl)benzyl)oxy)-4-oxobut-2-enoic acid (CAV) was synthesized and esterified with a hyperbranched polyester polyol obtained from fourth generation (HBP) to synthesize carbazole-based hyperbranched polyester polyols (HBPCAV). The proportions employed of CAV were 5, 10, 15, and 20 wt% relative to that of HBP. The grafted CAV percentage (P_gCAV) increased with the CAV content. The conversion percentages (CP) of the reactions for obtaining HBPCAV were higher than 95% and the hydroxyl values (OHV) were lower than that of HBP. The modification percentage (MP) of the HBP was between 9.33 and 27.38%. Using proton nuclear magnetic resonance (¹H NMR) and infrared (IR) analyses was evidenced the formation of CAV and HBPCAV. Dynamic light scattering (DLS) analysis showed that HBPCAV exhibited aggregations. The number average molar mass (M_n), viscosity (η), and glass transition temperature (T_g) values of the HBPCAV samples were higher than those of the HBP, and also increased with the P_gCAV values. The rheological behaviors of the HBP and HBPCAV samples were mainly Newtonian and shear-thinning, respectively. All HBPCAV exhibited electroluminescent properties.

本研究试图获得具有荧光性质的超支化聚酯多元醇衍生物。最初，合成4-（（4-（9H-咔唑-9-基）苄基）氧基）-4-氧代丁-2-烯酸（CAV），并用从第四代（HBP）获得的超支化聚酯多元醇酯化合成咔唑基超支化聚酯多元醇（HBPCAV）。相对于HBP，CAV的使用比例为5、10、15和20wt％。嫁接的CAV百分率（P _gCAV）随CAV含量的增加而增加。得到HBPCAV的反应的转化率（CP）高于95％，羟值（OHV）低于HBP。HBP的修饰百分比（MP）在9.33和27.38％之间。利用质子核磁共振（¹1 H NMR）和红外（IR）分析证明了CAV和HBPCAV的形成。动态光散射（DLS）分析表明，HBPCAV表现出聚集。HBPCAV样品的数均摩尔质量（M _n），粘度（η）和玻璃化转变温度（T _g）值均高于HBP，并且随P _gCAV值的增加而增加。HBP和HBPCAV样品的流变行为分别主要是牛顿和剪切稀化。所有HBPCAV均具有电致发光特性。