Highly Luminescent Carbon-Nanoparticle-Based Materials: Factors Influencing Photoluminescence Quantum Yield

	Highly Luminescent Carbon-Nanoparticle-Based Materials: Factors Influencing Photoluminescence Quantum Yield
	Qu S. N.; Shen D. Z.; Liu X. Y.; Jing P. T.; Zhang L. G.; Ji W. Y.; Zhao H. F.; Fan X. W.; Zhang H.
	2014
发表期刊	Particle & Particle Systems Characterization
ISSN	ISBN/0934-0866
卷号	31 期号:11 页码:1175-1182
摘要	Unravelling the factors influencing photoluminescence (PL) quantum yield of the carbon nanoparticles (CNPs) is the prerequisite for preparing highly luminescent CNP-based materials. In this work, an easy and effective method is reported for preparing highly luminescent CNP-based materials. Water-soluble luminescent CNPs (CNP-Cs) with large size distribution (1-60 nm) with PL quantum yields of 22% are synthesized through a microwave pyrolysis approach. Energy transfer (ET) is confirmed to occur from small size CNPs (CNP-Ss:1-7 nm, blue emitters) to large size CNPs (CNP-Ls:10-60 nm, green emitters). Further centrifugally separating CNP-Cs resulted in an enhancement of the PL quantum yield up to 39% of CNP-Ss aqueous solution. The PL quantum yield of CNP-Ss could even be further improved in high-viscosity solvents. PL quantum yield higher than 90% is achieved in films of commercial glue water embedded with the CNP-Ss at embedding ratio lower than 3 wt%. By contrast, the yield is greatly decreased in the CNP-C-embedding films with embedding ratio higher than 1 wt%, which is due to self-absorption, as well as enhanced ET between CNP-Ss and CNP-Ls. High-viscosity solvents and polymer matrix are proposed to act as surface passivation reagents to enhance PL quantum yield of CNPs.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44035
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Qu S. N.,Shen D. Z.,Liu X. Y.,et al. Highly Luminescent Carbon-Nanoparticle-Based Materials: Factors Influencing Photoluminescence Quantum Yield[J]. Particle & Particle Systems Characterization,2014,31(11):1175-1182.
APA	Qu S. N..,Shen D. Z..,Liu X. Y..,Jing P. T..,Zhang L. G..,...&Zhang H..(2014).Highly Luminescent Carbon-Nanoparticle-Based Materials: Factors Influencing Photoluminescence Quantum Yield.Particle & Particle Systems Characterization,31(11),1175-1182.
MLA	Qu S. N.,et al."Highly Luminescent Carbon-Nanoparticle-Based Materials: Factors Influencing Photoluminescence Quantum Yield".Particle & Particle Systems Characterization 31.11(2014):1175-1182.

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