Synthesis of Water-soluble C60 Nanoparticles Under Ultrasonication and Investigation of Their Photoluminescence Property†

doi:10.7503/cjcu20131020

Abstract

Abstract:

C₆₀ nanoparticles(C₆₀NPs) were prepared through a modified ultrasonic process. The effects of ultrasonic bath temperature on the particle size and distribution of C₆₀NPs, as well as the photoluminescence spectroscopy(PL) property of C₆₀NPs were studied. The results show that as the ultrasonic bath temperature increase, the average particle size of C₆₀NPs decrease and the dispersibility of C₆₀NPs improve obviously. Thermogravimetric analysis(TGA) and infrared(IR) spectroscopy measurements indicate that water and solvent accounte for 57% of the total mass of C₆₀NPs. After heating at 200 ℃, the particle size of C₆₀NPs is significantly reduced, and subsequently the water soluble C₆₀ quantum dots without solvent are obtained. The PL intensity from such water soluble C₆₀ quantum dots is about one order of magnitude higher than that from the as-prepared C₆₀NPs.

Key words: Soluble C60 nanoparticles, Quantum dot, Ultrasonic process, Photoluminescence(PL) property

CLC Number:

O613.7
O644

TrendMD:

LI Bing, YAO Mingguang, LI Chunjie, DU Mingrun, LIU Bingbing. Synthesis of Water-soluble C₆₀ Nanoparticles Under Ultrasonication and Investigation of Their Photoluminescence Property^†[J]. Chem. J. Chinese Universities, 2014, 35(5): 949.

Figures/Tables 5

Fig.1 Hydrodynamic diameter of C60NPs synthesized under different ultrasonic bath temperatures^ (A) 60 ℃; (B) 40 ℃; (C) 20 ℃.

Fig.2 TEM images of C60NPs synthesized under different ultrasonic bath temperatures(A—C) and TEM images of the samples after heating at 200 ℃(D—F)^ Ultrasonic bath temperature: (A), (D) 60 ℃; (B), (E) 40 ℃; (C), (F) 20 ℃.

Fig.3 TGA curve of C60NPs

Fig.4 IR spectra of pristine C60(a), C60NPs(b) andC60NP s after heating at 200 ℃(c)^* Four typical IR peaks of C60.

Fig.5 PL spectra of C60NPs and C60NPsafter heating at 200 ℃^λex= 830 nm; ↔: the missing part filtrated by notch filter.

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Synthesis of Water-soluble C₆₀ Nanoparticles Under Ultrasonication and Investigation of Their Photoluminescence Property^†

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