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Title 

Photophysical properties and singlet oxygen generation efficiencies of water-soluble fullerene nanoparticles

 

수용성 풀러렌 나노입자의 광물리 특성과 일항산소 발생 효율

Authors 

A S StasheuskiV A GalievskyA P StupakB M DzhagarovMi Jin ChoiBong Hyun ChungJin Young Jeong

Publisher 

Wiley-Blackwell

Issue Date 

2014

Citation 

Photochemistry and Photobiology, vol. 90, no. 5, pp. 997-1003

Abstract 

As various fullerene derivatives have been developed, it is necessary to explore their photophysical properties for potential use in photoelectronics and medicine. Here, we address the photophysical properties of newly synthesized water-soluble fullerene-based nanoparticles and polyhydroxylated fullerene as a representative water-soluble fullerene derivative. They show broad emission band arising from a wide-range of excitation energies. It is attributed to the optical transitions from disorder-induced states, which decay in the nanosecond time range. We determine the kinetic properties of the singlet oxygen (1O2) luminescence generated by the fullerene nanoparticles and polyhydroxylated fullerene to consider the potential as photodynamic agents. Triplet state decay of the nanoparticles was longer than 1O2 lifetime in water. Singlet oxygen quantum yield of a series of the fullerene nanoparticles is comparably higher ranging from 0.15 to 0.2 than that of polyhydroxylated fullerene, which is about 0.06. Conventional and time-resolved spectroscopy has been used to investigate polyhydroxylfullerene molecule and five fullerene-based nanoparticles. Our results demonstrate formation of disorder-induced states both in the polyhydroxylfullerene and in the nanoparticles.

ISSN 

0031-5764

Link 

http://dx.doi.org/10.1111/php.12294

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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