Photochemical and antimicrobial properties of novel C60 derivatives in aqueous systems

Jaesang Lee, Yuri Mackeyev, Min Cho, Dong Li, Jae Hong Kim, Lon J. Wilson, Pedro J J Alvarez

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Four novel hexakis C60 derivatives with varying functionalities were synthesized, and their photochemical properties and photodynamic disinfection efficiencies were quantitatively evaluated. All these C 60 derivatives generated 1O2 more efficiently than commercial multihydroxylated C60 (fullerol), as assessed by furfuryl alcohol consumption and electron paramagnetic resonance analysis. Despite significant agglomeration/aggregation in the aqueous phase to micrometer-sized particles, nanosecond laser flash photolysis showed that the lifetime of triplet state (a key intermediate for energy transfer responsible for 1O2 production) was comparable to reported values for pristine C60 in organic phase. As a result of facile 1O2 production, the C60 derivatives efficiently inactivated Escherichia coli and MS-2 bacteriophage. Cationic aminofullerene hexakis, which likely exerted electrostatic attraction, exhibited exceptionally rapid virus inactivation even compared to commercial nano-TiO2 photocatalyst. These unique photodynamic, hydrophilic and cationic properties may be instrumental for the development of next generation photocatalysts for disinfection applications. The high ROS (reactive oxygen species) production activity and associated cytotoxicity are concerns for potential releases of functionalized C60 to the environment, and require careful assessment apart from other forms of C60 (e.g., nC60) that have been widely studied as model nanomaterials but behave differently.

Original languageEnglish
Pages (from-to)6604-6610
Number of pages7
JournalEnvironmental Science and Technology
Volume43
Issue number17
DOIs
Publication statusPublished - 2009 Sep 1
Externally publishedYes

Fingerprint

Disinfection
disinfection
Photocatalysts
Virus Inactivation
Derivatives
Nanostructures
Photolysis
bacteriophage
Energy Transfer
Electron Spin Resonance Spectroscopy
electron spin resonance
Agglomeration
photolysis
Static Electricity
agglomeration
Alcohol Drinking
Bacteriophages
alcohol
Reactive Oxygen Species
virus

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Lee, J., Mackeyev, Y., Cho, M., Li, D., Kim, J. H., Wilson, L. J., & Alvarez, P. J. J. (2009). Photochemical and antimicrobial properties of novel C60 derivatives in aqueous systems. Environmental Science and Technology, 43(17), 6604-6610. https://doi.org/10.1021/es901501k

Photochemical and antimicrobial properties of novel C60 derivatives in aqueous systems. / Lee, Jaesang; Mackeyev, Yuri; Cho, Min; Li, Dong; Kim, Jae Hong; Wilson, Lon J.; Alvarez, Pedro J J.

In: Environmental Science and Technology, Vol. 43, No. 17, 01.09.2009, p. 6604-6610.

Research output: Contribution to journalArticle

Lee, J, Mackeyev, Y, Cho, M, Li, D, Kim, JH, Wilson, LJ & Alvarez, PJJ 2009, 'Photochemical and antimicrobial properties of novel C60 derivatives in aqueous systems', Environmental Science and Technology, vol. 43, no. 17, pp. 6604-6610. https://doi.org/10.1021/es901501k
Lee, Jaesang ; Mackeyev, Yuri ; Cho, Min ; Li, Dong ; Kim, Jae Hong ; Wilson, Lon J. ; Alvarez, Pedro J J. / Photochemical and antimicrobial properties of novel C60 derivatives in aqueous systems. In: Environmental Science and Technology. 2009 ; Vol. 43, No. 17. pp. 6604-6610.
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