Abstract To obtain self-healing phosphorescent composites, four Re(I) complexes, Re-Ura-a (a = 1–4) with uracil group were synthesized. The ultraviolet-visible (UV-Vis) absorption spectra of Re-Ura-a (a = 1–4) are mainly comprised of the π→π* transitions (200–400 nm) and the metal-to-ligand charge transfer transitions (400–450 nm). The photoluminescence (PL) spectra of Re-Ura-a (a = 1–4) peaking at 576–584 nm possess the biexponential excited-state decay lifetimes (τ) of 0.19–0.43 μs. The PL spectra of Re-Ura-a@PAA (a = 1–4, PAA = polyacrylic acid) gel blocks redshift to ca. 600 nm with τ values of ca. 0.33 μs. The Re-Ura-1(0.6 wt%)@PAA gel blocks could bear maximum stress of 0.191 MPa and maximum strain of 525%, and they could be ca. 40% self-healed in 5 min after being severed. Finally, the energies of the H-bonds between the carboxylic group of PAA and different parts of Re-Ura-1 were theoretically simulated to investigate the intermolecular interactions between Re-Ura-1 and PAA. Graphical Abstract

中文翻译：

---

含有 Re(I) 配合物的磷光自修复复合材料：制备和性能

摘要 为了获得自修复磷光复合材料，合成了四种 Re(I) 配合物，Re-Ura-a (a = 1-4) 与尿嘧啶基团。Re-Ura-a (a = 1–4) 的紫外-可见 (UV-Vis) 吸收光谱主要由 π→π* 跃迁 (200–400 nm) 和金属到配体的电荷转移跃迁组成（400–450 纳米）。Re-Ura-a (a = 1-4) 的光致发光 (PL) 光谱在 576-584 nm 处达到峰值，其双指数激发态衰变寿命 (τ) 为 0.19-0.43 μs。Re-Ura-a@PAA（a = 1-4，PAA = 聚丙烯酸）凝胶的 PL 光谱阻止红移至约。600 nm 的 τ 值约为 0.33 微秒。Re-Ura-1(0.6 wt%)@PAA 凝胶块可承受 0.191 MPa 的最大应力和 525% 的最大应变。被切断后5分钟内自愈率40%。最后，理论上模拟了 PAA 的羧基与 Re-Ura-1 不同部分之间的 H 键的能量，以研究 Re-Ura-1 和 PAA 之间的分子间相互作用。图形概要