One-step synthesis of fluorescent silver nanoparticles with modulated emission wavelength using oligo-polyarylene ether nitrile as surface capping agent
One-step synthesis of fluorescent silver nanoparticles with modulated emission wavelength using oligo-polyarylene ether nitrile as surface capping agent
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以低聚聚亚芳基醚腈为表面封端剂一步合成发射波长调制的荧光银纳米颗粒
DOI：
10.1007/s10854-017-7589-8
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发表时间：
2017-07
期刊：
影响因子：
--
通讯作者：
Xiaobo Liu
中科院分区：
文献类型：
--
作者：
Kun Jia;Hongguo Shou;Pan Wang;Wenjin Chen;Xiaobo Liu
众所周知，银纳米粒子的光子学性质与其尺寸密切相关，传统上光致发光主要是从尺寸为2 nm的超小尺寸银纳米粒子（又称银纳米团簇）中检测到的。采用不同主链结构的聚芳醚腈（PEN）低聚物作为表面封端剂，一步合成了粒径在20-70 nm之间的荧光银纳米粒子。结果表明，用含有羧基和磺酸基的PEN低聚物（oligo-PEN/CS）稳定的银纳米粒子比用羧基化PEN低聚物（oligo-PEN/C）封端的银纳米粒子具有更强的发光。此外，通过简单地改变在70 °C下在N，N-二甲基甲酰胺（DMF）中通过oligo-PEN/CS还原银离子的反应时间，可以将所得Ag纳米颗粒的荧光发射波长从490 nm调制到600 nm。基于其可调控的发光特性，所合成的银纳米粒子在生物化学传感和先进光学器件方面具有潜在的应用前景。
It is well-known that the photonic properties of silver nanoparticles are strongly dependent on their sizes, and the photoluminescence is traditionally detected from the silver nanoparticles with ultra-small sizes <2 nm, which are also named as silver nanoclusters. In this work, a facile one-step protocol for synthesis of fluorescent silver nanoparticles with much larger size in the range of 20–70 nm was reported, where the fluorescent polyarylene ether nitrile (PEN) oligomers with different backbone structures were employed as the surface capping agents. It was found that the silver nanoparticles stabilized with PEN oligomer containing both carboxylic and sulfonic side groups (oligo-PEN/CS) exhibited much stronger luminescence when compared to those capped with carboxylated PEN oligomer (oligo-PEN/C). Furthermore, the fluorescence emission wavelength of obtained Ag nanoparticles can be modulated from 490 nm to 600 nm by simply changing the reaction time of silver ions reduction via oligo-PEN/CS at 70 °C in N,N-dimethylformamide (DMF). Based on their tailorable luminescence, the synthesized silver nanoparticles could find potential applications in biochemical sensing and advanced optical devices.
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影响因子：
--
作者：
F. Meng;R. Zhao;Yingqing Zhan;Xiaobo Liu
通讯作者：
F. Meng;R. Zhao;Yingqing Zhan;Xiaobo Liu
影响因子：
4
作者：
Hai‐Yan Liu;Hua Wu;Jian-Fang Ma;Jin Yang;Ying‐Ying Liu
通讯作者：
Hai‐Yan Liu;Hua Wu;Jian-Fang Ma;Jin Yang;Ying‐Ying Liu
影响因子：
3.8
作者：
Coskun, Sahin;Aksoy, Burcu;Unalan, Husnu Emrah
通讯作者：
Unalan, Husnu Emrah
影响因子：
10.8
作者：
Wei W;Li S;Qin L;Xue C;Millstone JE;Xu X;Schatz GC;Mirkin CA
通讯作者：
Mirkin CA
影响因子：
6.7
作者：
Jia, Kun;Shou, Hongguo;Liu, Xiaobo
通讯作者：
Liu, Xiaobo