Carbazole, the well-known electron donor and hole-transporting organic light-emitting molecule was modified into 1,5-bis[N-carbazolyl]pentane (1,5-BNCP) by introducing the saturated pentane spacer. Such insertion fixed the certain space between growing polymer chains and demonstrated π–π stacking effect over its morphology and structure. Its contribution in improving the thermal stability and photosensitization was also investigated. The FT-IR and 1H NMR was used to characterize monomer. Morphology of subsequently polymerized material was seen under SEM. The position of polymerization and structural change were studied by FT-IR and XRD, respectively. Thermal study with reference to glass transition temperature and stability was analyzed by DSC and TGA. Optical properties of monomer and polymer were investigated by UV–visible and photoluminescent spectrophotometer. The material was found crystalline, thermally stable, highly photosensitized and white light emitter.

中文翻译：

---

1,5-双(N-咔唑基)戊烷的合成和聚合及其结构和行为亮点

通过引入饱和戊烷间隔基，咔唑是众所周知的电子供体和空穴传输有机发光分子，被修饰成 1,5-双[N-咔唑基]戊烷 (1,5-BNCP)。这种插入固定了增长的聚合物链之间的一定空间，并证明了其形态和结构的 π-π 堆叠效应。还研究了其在改善热稳定性和光敏性方面的贡献。FT-IR 和 1H NMR 用于表征单体。随后聚合材料的形态在 SEM 下可见。分别用FT-IR和XRD研究了聚合位置和结构变化。通过DSC和TGA分析参考玻璃化转变温度和稳定性的热研究。通过紫外-可见光和光致发光分光光度计研究单体和聚合物的光学性质。发现该材料具有结晶性、热稳定性、高度光敏性和白光发射体。