Long-Lifetime and Asymmetric Singlet Oxygen Photoluminescence from Aqueous Fullerene Suspensions
文献类型：期刊论文
| 作者 | Wang, Junhui; Leng, Jing; Yang, Heping; Sha, Guohe; Zhang, Cunhao |
| 刊名 | langmuir
 |
| 出版日期 | 2013-07-23 |
| 卷号 | 29期号:29页码:9051-9056 |
| ISSN号 | 0743-7463 |
| 产权排序 | 1,1 |
| 通讯作者 | 冷静 |
| 英文摘要 | the photoexcited aqueous fullerene (c-60) suspension was shown to exhibit an asymmetric photoluminescence (pl) spectrum, which, different from the symmetric spectrum observed previously in c-60 solutions or suspensions, still stems from the characteristic phosphorescence of singlet oxygen (o-2(a(1)delta)) owing to its dependence on oxygen concentration. in contrast to the microsecond-level lifetime of o-2(a(1)delta) in water solutions, that in our c-60 suspensions was measured at room temperature to be relatively long, about 2-3 ms, which is similar to 1000 times longer than the value reported by bilski et al. the physical mechanism for the asymmetric o-2(a(1)delta) pl from c-60 suspensions was studied in depth, indicating that it in fact originates from 02 molecules trapped in the c-60 lattice within the suspended c-60 aggregates (nc(60)). this mechanism, which can explain well our above results, was further validated by the nc(60)'s high-resolution transmission electron microscopy (hrtem) images with lattice fringes and the experimental temperature dependence of o-2(a(1)delta) lifetimes in nc(60) suspensions. our findings suggest that the bulk-phase o-2(a(1)delta) in aqueous nc(60) suspensions results from the diffusion of the o-2(a(1)delta) generated within the interior of nc(60) aggregates. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, multidisciplinary ; chemistry, physical ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; materials science |
| 关键词[WOS] | uv-irradiation ; c-60 clusters ; water ; c60 ; photochemistry ; transformation ; nanomaterials ; dispersions ; solubility ; generation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000322416700004 |
| 公开日期 | 2013-10-11 |
| 源URL | [http://159.226.238.44/handle/321008/117668]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Junhui,Leng, Jing,Yang, Heping,et al. Long-Lifetime and Asymmetric Singlet Oxygen Photoluminescence from Aqueous Fullerene Suspensions[J]. langmuir,2013,29(29):9051-9056. |
| APA | Wang, Junhui,Leng, Jing,Yang, Heping,Sha, Guohe,&Zhang, Cunhao.(2013).Long-Lifetime and Asymmetric Singlet Oxygen Photoluminescence from Aqueous Fullerene Suspensions.langmuir,29(29),9051-9056. |
| MLA | Wang, Junhui,et al."Long-Lifetime and Asymmetric Singlet Oxygen Photoluminescence from Aqueous Fullerene Suspensions".langmuir 29.29(2013):9051-9056. |
入库方式： OAI收割
来源：大连化学物理研究所
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