Fluorescent silver nanoclusters capped by polyethyleneimine with different molecular weights: Universal synthesis and application as a temperature sensor

doi:10.1016/j.jlumin.2016.04.040

NWIPB OpenIR

	Fluorescent silver nanoclusters capped by polyethyleneimine with different molecular weights: Universal synthesis and application as a temperature sensor
	Qu, Fei 1,2; Li, Qingjin 1,2; You, Jinmao 1,2,3
	2016-09-01
发表期刊	JOURNAL OF LUMINESCENCE
卷号	177 页码:133-138
文章类型	Article
摘要	In this paper, we developed a universal, applicable and simple synthetic method of Ag nanoclusters capped by polyethyleneimine (PEI) with different molecular weights (AgNC-PEIs), including Mw 600, 1300, 1800, 2000, 10,000, 25,000, 70,000, and 750,000. Using formaldehyde as the sole reducing agent, silver nanoclusters could be successfully prepared by using these templates. Subsequently, several characterization techniques were employed to investigate the properties of AgNC-PEIs, and the results suggested that these AgNC-PEIs had similar sizes, structures, and optical features. However, besides the common characteristics, different temperature sensitivities were found for these nanoclusters, in which AgNC-PEI 25000 was proper to be applied as a temperature sensor. With increasing temperature, the fluorescence quenched dramatically, and this change could be readily observed by naked eyes under UV light. Injection of these temperature sensitive nanoclusters into a glass tube, a simple thermometer could be fabricated easily, thus AgNC-PEI 25000 would be a promising candidate for temperature sensing as a visible indicator. (c) 2016 Elsevier B.V. All rights reserved.
关键词	Ag Nanoclusters Polyethyleneimine Formaldehyde Temperature Sensor
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1016/j.jlumin.2016.04.040
关键词[WOS]	GOLD NANOPARTICLES ; SENSITIVE DETECTION ; SELECTIVE DETECTION ; HYDROGEN-PEROXIDE ; AG NANOCLUSTERS ; CLUSTERS ; BLUE ; TEMPLATE ; EMISSION ; HEPARIN
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(21405093) ; Scientific Research Foundation of Qufu Normal University(BSQD20130117)
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000377997700020
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6490
专题	中国科学院西北高原生物研究所
作者单位	1.Qufu Normal Univ, Key Lab Life Organ Anal, Qufu 273165, Shandong, Peoples R China 2.Qufu Normal Univ, Key Lab Pharmaceut Intermediates & Anal Nat Med, Qufu 273165, Shandong, Peoples R China 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Peoples R China
推荐引用方式 GB/T 7714	Qu, Fei,Li, Qingjin,You, Jinmao. Fluorescent silver nanoclusters capped by polyethyleneimine with different molecular weights: Universal synthesis and application as a temperature sensor[J]. JOURNAL OF LUMINESCENCE,2016,177:133-138.
APA	Qu, Fei,Li, Qingjin,&You, Jinmao.(2016).Fluorescent silver nanoclusters capped by polyethyleneimine with different molecular weights: Universal synthesis and application as a temperature sensor.JOURNAL OF LUMINESCENCE,177,133-138.
MLA	Qu, Fei,et al."Fluorescent silver nanoclusters capped by polyethyleneimine with different molecular weights: Universal synthesis and application as a temperature sensor".JOURNAL OF LUMINESCENCE 177(2016):133-138.