dialkynyl-1,2-diones and 1,2-diamino-4,5-dicyanobenzene, show intense absorptions in the near infrared and have photooxidising properties that make them promising candidates as agents active in photodynamictherapy.
chromophores are characterised by intense UV/Vis/NIR absorptions, most notably by bands at 770 nm with extinction coefficients exceeding 500 000 M(-1) cm(-1). With a view to possible photodynamictherapy applications, the potency of the chromophores to sensitise the formation of singlet oxygen was examined, both qualitatively using a 1,3-diphenylisobenzofuran assay, and quantitatively by the determination
从功能化的hexa-1,5-diyne-3开始,分两步制备了一系列新的八炔基四-[6,7]-喹喔啉卟啉嗪(TQuiPors)脂类和亲水性衍生物,它们是萘酞菁的类似物。 4-二酮。将二价锌和镁离子引入大环核。尽管三异丙基甲硅烷基,3,5-二叔丁基苯基和4-三异丙基甲硅烷基氧基苯基的炔基TQuiPors具有亲脂性,因此可溶于标准有机溶剂,但发现聚乙二醇取代的衍生物可溶于DMSO和乙醇/水混合物。新的生色团的特征是强烈的UV / Vis / NIR吸收,最显着的特征是在770 nm处的谱带,消光系数超过500 000 M(-1)cm(-1)。为了可能的光动力疗法应用,使用1,3-二苯基异苯并呋喃测定定性地检测了发色团对单线态氧形成的敏感性,并通过确定单线态氧的量子产率进行了定量分析。发现所有TQuiPor在有空气的情况下照射时都会产生单线态氧。尤其是,八炔基Zn-TQuiPor产生单线态氧,其量