Exceptional Intersystem Crossing in Di(perylene bisimide)s: A Structural Platform toward Photosensitizers for Singlet Oxygen Generation

被引:102
作者
Wu, Yishi [1 ]
Zhen, Yonggang [1 ]
Ma, Yuchao [1 ]
Zheng, Renhui [1 ]
Wang, Zhaohui [1 ]
Fu, Hongbing [1 ]
机构
[1] Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China
来源
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2010年 / 1卷 / 17期
基金
中国国家自然科学基金;
关键词
TRIPLET EXCITED-STATE; PHOTODYNAMIC THERAPY; PERYLENE BISIMIDE; CHARGE-TRANSFER; DYES; POLYMERS;
D O I
10.1021/jz1008328
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Photosensitized reactions of molecular oxygen have found far-reaching applications in various fields, and the development of new photosensitizer compounds is of crucial importance. We here describe a new class of triply linked bay fused diperylene bisimides (DiPBIs) which exhibited several unique features, rendering them a new structural platform for the development of highly efficient and photostable photosensitizers. (i) The extended pi-conjugation shifts its absorption into the body's therapeutic window. (ii) The nonplanarity of the distorted cores enhances the spin-orbit coupled intersystem crossing. (iii) The long-lasting high-energy T-1 state facilitates singlet oxygen generation via energy-transfer reaction between T-1 and ground-state oxygen.
引用
收藏
页码:2499 / 2502
页数:4
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