Page 98 - 《精细化工》2021年第7期
P. 98

第 38 卷第 7 期                             精   细   化   工                                  Vol.38, No.7
             202 1 年 7 月                             FINE CHEMICALS                                  July  2021


              功能材料
                              聚卟啉结构与单线态氧产率的关系



                                                                                 *
                                       白景佩,徐   翔,郑玉斌,郑   楠
                                        (大连理工大学  化工学院,辽宁  大连  116024)


                 摘要:分别以 5,10,15,20-四(4-羧基苯基)卟啉和 4,4′-[10,20-二(4-羧基苯基)-5,15-二(2-乙炔基苯基)]卟啉与不同长
                 度的柔性二胺为单体,通过缩合聚合制备了交联网状聚卟啉和直链聚卟啉,通过单线态氧产率的对比探究不同
                 结构对单线态氧产率的调控规律。结果表明,当柔性二胺中碳原子个数≤4 时,交联网状聚卟啉具有优于直链
                 聚卟啉的单线态氧产率性能,反之直链聚卟啉具有更加显著的优异性能。交联网状聚卟啉单线态氧产率随着柔
                 性链长度的增长先上升后下降,直链聚卟啉随着柔性链长度的增长逐渐上升,且末端为同种电荷的聚卟啉具有
                 更高的单线态氧产率,优化后的聚卟啉单线态氧产率可达单体的 2.37 倍。
                 关键词:聚卟啉;单线态氧;交联网状聚合物;直链聚合物;光敏剂;功能材料
                 中图分类号:R318.08;O633.2      文献标识码:A      文章编号:1003-5214 (2021) 07-1380-06



                Relationship between structure and singlet oxygen yield of poly-porphyrin

                                                                                    *
                                    BAI Jingpei, XU Xiang, ZHENG Yubin, ZHENG Nan
                       (College of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China)


                 Abstract: Cross-linked or  linear poly-porphyrins were prepared  via polycondensation of meso-tetra
                 (4-carboxyphenyl)porphine or  4,4'-[10,20-bis(4-carboxyphenyl)-5,15-bis(2-ethynylphenyl)]porphyrin and
                 diamines with various chain-lengths as monomers. The relationship between the structure of poly-porphyrin
                 with singlet oxygen yield was explored. The results indicated that when the number of carbon atoms in the
                 flexible diamine was less than or equal to 4, the cross-linked poly-porphyrins exhibited higher singlet oxygen
                 yield than the linear ones. On the contrary, the linear poly-porphyrins had more remarkable performance
                 when the number of carbon atoms in the flexible diamine was larger than 4. The singlet oxygen yield   of the
                 cross-linked poly-porphyrins first increased and then  decreased with the increase  of the lengths of the
                 carbon chains, while that  of linear poly-porphyrins continuously increased. Moreover, the poly-porphyrins
                 bearing the same charges on the end groups exhibited higher singlet oxygen yield. The singlet oxygen yield
                 of the optimized poly-porphyrin was 2.37-fold that of the monomer.
                 Key words: poly-porphyrin; singlet oxygen; cross-linked network polymer; linear polymer; photosensitizer;
                 functional materials


                 光动力疗法(PDT)是针对恶性肿瘤的新兴治疗                        生器,具有较高摩尔吸光系数、相对较低的暗毒性和
            方法  [1-4] 。光敏剂(PS)在将光能转移到周围氧气的                     出色的稳定性      [11-15] 。然而,TPP 具有典型的平面刚性
                                  1
            过程中,产生单线态氧( O 2 ),从而通过破坏 DNA、                      结构,疏水性极强,在人体的水性介质中由于强疏
            RNA、脂质和蛋白质诱导细胞凋亡或坏死                   [5-8] 。常见    水作用和平面作用而产生 π-π 堆积效应,随着浓度的
            的光敏剂通常为大环共轭结构,主要包括卟啉、酞                             增加从而发生聚集引发聚集诱导猝灭(ACQ)                    [16-20] ,
            菁、BODIPY 等代表性结构          [9-10] 。四苯基卟啉(TPP)        导致其光学性能显著下降,单线态氧产率下降,极
            是 PS 中常见的化学结构,是一种高效的单线态氧发                          大地限制了其在光动力治疗领域的应用。


                 收稿日期:2021-01-26;  定用日期:2021-03-22; DOI: 10.13550/j.jxhg.20210105
                 基金项目:国家自然科学基金项目(51703018);中央引导地方科技发展专项资金(2021JH6/10500148)
                 作者简介:白景佩(1996—),男,硕士生,E-mail:a134211980@qq.com。联系人:郑   楠(1988—),女,讲师,E-mail:nzheng@
                 dlut.edu.cn。
   93   94   95   96   97   98   99   100   101   102   103