中文摘要：

C60作为一种新型纳米材料,其环境负效应日益受到关注.C60的光化学反应特性是其具有生物毒性的重要原因之一,但C60在水中形成纳米晶体颗粒后失去了C60分子本身的光化学反应活性,不能产生氧自由基.C60在水介质中光化学反应活性的转变使其生物毒性机制研究复杂化.本文综述了水介质中C60纳米晶体颗粒的光化学反应活性相关研究,包括光化学反应活性机制、水介质中的光化学反应特性、光化学反应活性诱导机制、光化学反应活性的影响因素及光化学反应活性对于生物毒性的贡献机制.为深入研究C60纳米晶体颗粒在水介质中的迁移转化归趋及生物毒性机制提供理论依据.

英文摘要：

The potential environmental risks of the novel nanomaterial,C60,have been attracting more and more attention.The cytotoxicity of C60 can be partially attributed to its photochemical properties,which may be deactivated in aqueous phase when C60 molecules forms nanocrystallines,and reactive oxygen species cannot be produced.This article reviews photochemical properties of C60 crystallines in aqueous phase,including reaction mechanisms,properties in aqueous solution,restoration of photochemical reactivity,influencing factors,and contribution to biotoxicity.Adequate knowledge of photochemical properties of C60 nanocrystallines would contribute to the research on transport,transformation,and cytotoxicity mechanism of C60 nanocrystalline in aqueous phase.