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ACS Nano. 2017 Feb 28;11(2):1973-1981. doi: 10.1021/acsnano.6b08140. Epub 2017 Feb 8.

Terbium-Aspartic Acid Nanocrystals with Chirality-Dependent Tunable Fluorescent Properties.

Author information

1
State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, China.
2
Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing 100191, China.
3
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
4
School of Physical Science and Technology, Shanghai Tech University , Shanghai 201210, China.

Abstract

Terbium-aspartic acid (Tb-Asp) nanocrystals with chirality-dependent tunable fluorescent properties can be synthesized through a facile synthesis method through the coordination between Tb and Asp. Asp with different chirality (dextrorotation/d and levogyration/l) changes the stability of the coordination center following fluorescent absorption/emission ability differences. Compared with l-Asp, d-Asp can coordinate Tb to form a more stable center, following the higher quantum yield and longer fluorescence life. Fluorescence intensity of Tb-Asp linearly increases with increase ratio of d-Asp in the mixed chirality Tb-Asp system, and the fluorescent properties of Tb-Asp nanocrystals can be tuned by adjusting the chirality ratio. Tb-Asp nanocrystals possess many advantage, such as high biocompatibility, without any color in visible light irradiation, monodispersion with very small size, and long fluorescent life. Those characteristics will give them great potential in many application fields, such as low-cost antifake markers and advertisements using inkjet printers or for molds when dispersed in polydimethylsiloxane. In addition, europium can also be used to synthesize Eu-Asp nanoparticles. Importantly, the facile, low-cost, high-yield, mass-productive "green" process provides enormous advantages for synthesis and application of fluorescent nanocrystals, which will have great impact in nanomaterial technology.

KEYWORDS:

chirality; print; stereo visualization; tunable fluorescence

PMID:
28145694
DOI:
10.1021/acsnano.6b08140

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