Benzoindolic squaraine dyes with a large two-photon absorption cross-section
文献类型：期刊论文
| 作者 | Sun, Chun-Lin1,2; Lv, Shao-Kai3; Liu, Yan-Ping1; Liao, Qing3; Zhang, Hao-Li2; Fu, Hongbing1,3; Yao, Jiannian1,3 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2017 |
| 卷号 | 5期号:5页码:1224-1230 |
| 英文摘要 | Near-infrared (NIR) emission and two-photon excited fluorescence (TPEF) are both desirable features for bioimaging because they offer several advantages, such as deep tissue penetration, high spatial resolution and low background noise. However, incorporation of NIR emission and TPEF into the same labeling dye molecule remains a formidable challenge as it requires three features simultaneously: large two-photon absorption cross-section (delta), high fluorescence quantum yield (Phi) and an appropriate NIR absorption/emission wavelength. Herein, we report a theory-assisted design of novel benzoindolic squaraine (BIS) dye molecules that exhibit a high-performance NIR emission and TPEF properties simultaneously. First, the planarity of the BIS core extended the p-framework, which leads to NIR emission at 682 nm with a quantum yield greater than 40%. Second, we utilized the local electric field effect by the addition of non-conjugated D/A moieties to the BIS core to modulate the two-photon absorption (TPA) cross-section (delta) values. Natural transition orbital calculations suggest that non-conjugated D or A groups do not affect the one-photon photophysical properties of BIS dyes, but can alter the molecular orbitals involved in the S-n <- S-0 (n >= 2) TPA process. With this new strategy, we successfully obtained a methoxyl-modified molecule (BIS-1), which presents a TPA window between 780 and 950 nm, with the largest d value above 12 000 GM. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38188]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 2.Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Special Funct Mat & Struct Design MOE, State Key Lab Appl Organ Chem, Lanzhou 73000, Peoples R China 3.Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Chun-Lin,Lv, Shao-Kai,Liu, Yan-Ping,et al. Benzoindolic squaraine dyes with a large two-photon absorption cross-section[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(5):1224-1230. |
| APA | Sun, Chun-Lin.,Lv, Shao-Kai.,Liu, Yan-Ping.,Liao, Qing.,Zhang, Hao-Li.,...&Yao, Jiannian.(2017).Benzoindolic squaraine dyes with a large two-photon absorption cross-section.JOURNAL OF MATERIALS CHEMISTRY C,5(5),1224-1230. |
| MLA | Sun, Chun-Lin,et al."Benzoindolic squaraine dyes with a large two-photon absorption cross-section".JOURNAL OF MATERIALS CHEMISTRY C 5.5(2017):1224-1230. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。