A novel D-A type terpyridine-based carbazole Zn(II) complex with enhanced two-photon absorption and its bioimaging application

被引：29

作者：

Kong, Chengcheng ^{[1
]}

Peng, Muhua ^{[2
]}

Shen, Hong ^{[1
]}

Wang, Yiming ^{[1
]}

Zhang, Qiong ^{[1
]}

Wang, Hui ^{[1
]}

Zhang, Jun ^{[1
]}

Zhou, Hongping ^{[1
]}

Yang, Jiaxiang ^{[1
]}

Wu, Jieying ^{[1
]}

Tian, Yupeng ^{[1
,3
]}

机构：

[1] Anhui Univ, Dept Chem, Key Lab Funct Inorgan Mat Chem Anhui Prov, Hefei 230039, Peoples R China

[2] Anhui Univ, Dept Biol, Sch Anhui Prov, Ctr Stem Cell & Translat Med, Hefei 230039, Peoples R China

[3] Nanjing Univ, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China

来源：

DYES AND PIGMENTS | 2015年 / 120卷

基金：

中国国家自然科学基金;

关键词：

Terpyridine; Complex; Crystal structures; Two-photon absorption properties; Biomaging; ICT; NONLINEAR-OPTICAL PROPERTIES; LIGANDS;

D O I：

10.1016/j.dyepig.2015.04.039

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novel 2,2':6',2 ''-terpyridine-based ligand L and its Zn(II) complex [ZnL2](PF6)(2) were designed, synthesized and fully characterized. The crystal structures of L and [ZnL2](PF6)(2) were confirmed by single crystal X-ray diffraction analysis. Photophysical optical properties of the ligand and its complex were investigated systemically. The results reveal that the complex exhibits a new strong absorption band at about 400 nm compared to its free ligand, which is assigned to the intramolecular charge transfer (ICT) transitions. The complex displays lower fluorescence intensity, due to the better planarity of the ligand, higher electronic mobility, and leading to easier ICT. However, two-photon absorption (2PA) cross-sections of the complex is much enhanced than that of the free ligand in the near-infrared region (NIR). Furthermore, [ZnL2](PF6)(2) can be penetrated into living cells without cell-penetrating molecular transporter, stained with cytoplasm in the NIR (830 nm). Therefore such complex is promising for further biomaging applications. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：328 / 334

页数：7

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