A particular challenge in the design of organic photosensitizers (PSs) with donor–acceptor (D‐A) structures is that it is based on trial and error rather than specific rules. Now these challenges are addressed by proposing two efficient strategies to enhance the photosensitization efficiency: polymerization‐facilitated photosensitization and the D‐A even–odd effect. Conjugated polymers have been found to exhibit a higher ¹O₂ generation efficiency than their small molecular counterparts. Furthermore, PSs with A‐D‐A structures show enhanced photosensitization efficiency over those with D‐A‐D structures. Theoretical calculations suggest an enhanced intersystem crossing (ISC) efficiency by these strategies. Both in vitro and in vivo experiments demonstrate that the resulting materials can be used as photosensitizers in image‐guided photodynamic anticancer therapy. These guidelines are applicable to other polymers and small molecules to lead to the development of new PSs.

中文翻译：

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增强光敏性的策略：聚合和供体-受体偶数-奇效应

具有供体-受体（D-A）结构的有机光敏剂（PS）设计中的一个特殊挑战是，它基于试验和错误而不是特定的规则。现在，通过提出两种提高光敏效率的有效策略来应对这些挑战：聚合促进的光敏和D-A奇偶效应。已发现共轭聚合物表现出更高的¹ O ₂发电效率要比它们的小分子同行高。此外，具有AD结构的PS与具有AD结构的PS相比，具有更高的光敏效率。理论计算表明，通过这些策略可以提高系统间穿越（ISC）的效率。体外和体内实验均表明，所得材料可在图像引导的光动力抗癌治疗中用作光敏剂。这些准则适用于其他聚合物和小分子，以导致新PS的发展。