Nanocomposites of carbon nanotubes and photon upconversion nanoparticles for enhanced optical limiting performance†,Journal of Materials Chemistry C

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Nanocomposites of carbon nanotubes and photon upconversion nanoparticles for enhanced optical limiting performance†
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-06-12 00:00:00 , DOI: 10.1039/c8tc01576g
Kun Chen _{1,

2,

3,

4,

5} , Wenhong Su _{1,

2,

3,

4,

5} , Yue Wang _{6,

7,

8,

9} , Huan Ge _{1,

2,

3,

4,

5} , Kun Zhang _{1,

2,

3,

4,

5} , Yangbo Wang _{1,

2,

3,

4,

5} , Xiaoji Xie _{1,

2,

3,

4,

5} , Vincent G. Gomes _{10,

11,

12,

13} , Handong Sun _{6,

7,

8,

9} , Ling Huang _{1,

2,

3,

4,

5}

Affiliation

Studies have proved that large nonlinearities, fast responses, and broadband spectra are pre-requisites for designing materials with good optical limiting performance. Carbon nanotubes (CNTs) have shown promising optical limiting effects with the best performance at 532 nm. However CNTs can only be dissolved in limited types of solvents, such as chloroform, dichlorobenzene, and toluene, making their general processability an actual challenge. On the other hand, photon upconversion nanoparticles (UCNPs) have strong absorption in the near infrared (NIR) region, e.g., 980 nm. Thus, in situ synthesis of nanocomposites containing UCNPs and oxidized CNTs via coordination interactions would provide both solubility in water and good optical limiting behavior in the NIR region. Experimental results have indicated that the optical limiting performance of nanocomposites is better than that of either CNTs or UCNPs, which is reasonable due to synergistic effects. Luminescence decay studies of UCNPs have suggested that Förster resonance energy transfer is responsible for the good optical limiting performance under 980 nm laser illumination.

中文翻译：

碳纳米管和光子上转换纳米颗粒的纳米复合材料，可增强光学限制性能†

研究证明，大的非线性，快速响应和宽带光谱是设计具有良好光学限制性能的材料的先决条件。碳纳米管（CNT）已显示出有希望的光学限制效应，并在532 nm处具有最佳性能。但是，碳纳米管只能溶解在有限类型的溶剂中，例如氯仿，二氯苯和甲苯，这使它们的一般加工性能成为实际挑战。另一方面，光子上转换纳米颗粒（UCNP）在近红外（NIR）区域（例如980 nm ）具有很强的吸收能力。因此，通过UCNPs和氧化的CNTs的纳米复合材料的原位合成可通过配位相互作用将同时提供在水中的溶解度和在NIR区域的良好光学限制行为。实验结果表明，纳米复合材料的光限制性能优于CNTs和UCNPs，由于协同效应，这是合理的。UCNPs的发光衰减研究表明，Förster共振能量转移是在980 nm激光照射下良好的光限制性能的原因。

更新日期：2018-06-12

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