荧光碳纳米颗粒基复合体界面的设计及其对光致电子转移效率的影响

项目名称： 荧光碳纳米颗粒基复合体界面的设计及其对光致电子转移效率的影响

项目编号： No.51272301

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 胡胜亮

作者单位： 中北大学

项目金额： 80万元

中文摘要： 碳纳米颗粒荧光发射能否高效可调决定于sp2和sp3的混合杂化、尺寸和表面态。尺寸诱导的量子限域效应促使了混合杂化结构成为了发光中心，而该发光结构更容易形成在表面，因此光致激发电子能否发生辐射复合及其效率受制于碳纳米颗粒的表面态。基于其它元素原子与碳纳米颗粒表面结合，形成的界面会表现出独特的电子/带隙结构，可降低非辐射复合的发生或者导致激发电子（能量）的转移。为了提高光能的利用率，本项目拟把荧光碳纳米颗粒与金属及其氧化物、硫化物复合并对其界面结构、尺寸和形态调控；再把所得荧光碳纳米颗粒基复合体嫁接海藻酸盐通孔结构上，实现回收以避免二次污染；通过测试表征和理论分析明确出荧光碳纳米颗粒基复合体界面与光致电子转移效率的关系。已在J. Chem. Mater.、Carbon、 Appl. Phys. Lett.等期刊发表学术论文13篇，申请发明专利2项，授予山西省高等学校青年学术带头称号。

中文关键词： 荧光碳纳米颗粒；能量转换；复合物；；

英文摘要： The fluorescent efficiency and tunability of carbon nanoparticles (CNPs) are determined by the sp2- and sp3-hybridized mixture, size and surface state. The size-induced quantum confinement makes the nanostructures from mixed hybridization, which generally takes place on the surface, become luminescent centers. Thus whether the radiative recombination of excitons can be realized or not depends on the surface states of CNPs. When other element atoms combine with the superficial carbon atoms, their interface could exhibit special electron/bandgap structures, leading to reduce nonradiative recombination of excitons or photoinduced electron transfers. To improve the utilization rate of light, the composites of fluorescent CNPs and the other nanostructure including of metal and its oxide and sulfide will be fabricated. Importantly, the interface structure, size and morphology will be regulated to discover the relationship between the interfaces of CNP-matrix composites and photoinduced electron transfers with the help of theoretical models. On the other hand, CNP-matrix composites will be grafted on through-hole structures of the alginates for recycling and then preventing secondary pollution. Many results have been obtained under the support of present NSFC. More than thirteen papers have been published on the famou

英文关键词： Fluorescent carbon nanoparticles；energy conversion；composites；；