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Enhanced three-photon activity trigged by AIE behavior of a novel terpyridine-based Zn(II) complex bearing thiophene bridge

Abstract

Multiphoton bioimaging benefits from greater tissue penetration, low phototoxicity and high resolution. As a result, the development of efficient multiphoton imaging agents is highly desirable and remains challenging. Herein, a novel terpyridine-based Zn(II) complex bearing thiophene bridge has been rational designed and fabricated. Thanks to its aggregation induced emission (AIE) characteristic, DZ1 emits bright yellow-green fluorescence (λem = 575 nm) in physiological conditions. The three-photon spectral changes of DZ1 when binding with RNA unambiguously reflect its RNA-specific targeting behavior, resulting in 2.0 times enhancement in three-photon action cross-sections located at the second near-infrared window (NIR-II, 1700 nm).

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Publication details

The article was received on 08 Apr 2019, accepted on 06 Jun 2019 and first published on 11 Jun 2019


Article type: Edge Article
DOI: 10.1039/C9SC01705D
Chem. Sci., 2019, Accepted Manuscript
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    Enhanced three-photon activity trigged by AIE behavior of a novel terpyridine-based Zn(II) complex bearing thiophene bridge

    Z. Feng, D. Li, M. Zhang, T. Shao, Y. shen, X. Tian, Q. Zhang, S. Li, J. Wu and Y. Tian, Chem. Sci., 2019, Accepted Manuscript , DOI: 10.1039/C9SC01705D

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