光致发光
纳米点
煅烧
材料科学
纳米技术
碳纤维
金属有机骨架
化学工程
光电子学
吸附
化学
催化作用
有机化学
复合数
工程类
复合材料
作者
Zhengbiao Gu,De‐Jing Li,Chan Zheng,Kang Yao,Christof Wöll,Jian Zhang
标识
DOI:10.1002/ange.201702162
摘要
Abstract Arrays of ultrasmall and uniform carbon nanodots (CDs) are of pronounced interest for applications in optical devices. Herein, we describe a low‐temperature calcination approach with rather inexpensive reactants. After glucose molecules had been loaded into the pores of metal–organic frameworks (MOFs), well‐defined CD arrays were produced by heating to 200 °C. The size and spacing of the CDs could be controlled by the choice of templating MOF: HKUST‐1, ZIF‐8, or MIL‐101. The sizes of the obtained CDs were approximately 1.5, 2.0, and 3.2 nm, which are close to the corresponding MOF pores sizes. The CD arrays exhibited interesting photophysical properties, including photoluminescence with tunable emission and pronounced nonlinear optical (NLO) effects. The NLO properties of the obtained CD arrays were significantly different from those of a CD suspension, thus indicating the existence of collective phenomena.
科研通智能强力驱动
Strongly Powered by AbleSci AI