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Temperature-Regulated Core Swelling and Asymmetric Shrinkage for Tunable Yolk@Shell Polydopamine@Mesoporous Silica Nanostructures

文献类型：期刊论文

作者Qiao, Minghang1; Xing, Yi1; Xie, Lei2; Kong, Biao2; Kleitz, Freddy3; Li, Xiaoyu4,5; Du, Xin1
刊名SMALL
出版日期2022-11-18
页码10
ISSN号1613-6810
关键词mesoporous silica nanomotors polydopamine swelling and shrinkage yolk@shell particles
DOI10.1002/smll.202205576
英文摘要Facile and controllable synthesis of functional yolk@shell structured nanospheres with a tunable inner core ('yolk') and mesoporous shell is highly desirable, yet it remains a great challenge. Herein, xx developed a strategy based on temperature-regulated swelling and restricted asymmetric shrinkage of polydopamine (PDA) nanospheres, combined with heterogeneous interface self-assembly growth. This method allows a simple and versatile preparation of PDA@mesoporous silica (MS) nanospheres exhibiting tunable yolk@shell architectures and shell pore sizes. Through reaction temperature-regulated swelling degree and confined shrinkage of PDA nanospheres, the volume ratio of the hollow cavity that the PDA core occupies can easily be tuned from ca. 2/3 to ca. 1/2, then to ca. 2/5, finally to ca. 1/3. Owing to the presence of PDA with excellent photothermal conversion capacity, the PDA@MS nanocomposites with asymmetric yolk distributions can become a colloidal nanomotor propelled by near-infrared (NIR) light. Noteworthily, the PDA@MS with half PDA yolk and microcracks in silica shell reaches 2.18 mu m(2) s(-1) of effective diffusion coefficient (De) in the presence of 1.0 W cm(-2) NIR light. This temperature-controlled swelling approach may provide new insight into the design and facile preparation of functional PDA-based yolk@shell structured nanocomposites for wide applications in biology and medicine.
WOS关键词NANOREACTOR ; NANOSPHERES ; NANOMOTORS ; REDUCTION
资助项目Fundamental Research Funds for the Central Universities[FRF-TP-19-017B1] ; Fundamental Research Funds for the Central Universities[FRF-BD-20-14A] ; Youth Teacher International Exchange Growth Program[QNXM20210042] ; National Natural Science Foundation of China[51971208] ; National Natural Science Foundation of China[21501009] ; Beijing Municipal Science and Technology Commission[z131102002813058] ; University of Vienna (Austria)
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者WILEY-V C H VERLAG GMBH
WOS记录号WOS:000888668000001
资助机构Fundamental Research Funds for the Central Universities ; Youth Teacher International Exchange Growth Program ; National Natural Science Foundation of China ; Beijing Municipal Science and Technology Commission ; University of Vienna (Austria)
源URL[http://ir.ipe.ac.cn/handle/122111/55847]  
专题中国科学院过程工程研究所
通讯作者Du, Xin
作者单位1.Univ Sci & Technol Beijing, Dept Chem & Biol Engn, Beijing Key Lab Bioengn & Sensing Technol, Beijing 100083, Peoples R China
2.Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200438, Peoples R China
3.Univ Vienna, Fac Chem, Dept Inorgan Chem Funct Mat, A-1090 Vienna, Austria
4.Univ Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr green recycling Strateg Met Reso, Key Lab Green Proc & Engn,Chinese Acad Sci, Beijing 100190, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Qiao, Minghang,Xing, Yi,Xie, Lei,et al. Temperature-Regulated Core Swelling and Asymmetric Shrinkage for Tunable Yolk@Shell Polydopamine@Mesoporous Silica Nanostructures[J]. SMALL,2022:10.
APA Qiao, Minghang.,Xing, Yi.,Xie, Lei.,Kong, Biao.,Kleitz, Freddy.,...&Du, Xin.(2022).Temperature-Regulated Core Swelling and Asymmetric Shrinkage for Tunable Yolk@Shell Polydopamine@Mesoporous Silica Nanostructures.SMALL,10.
MLA Qiao, Minghang,et al."Temperature-Regulated Core Swelling and Asymmetric Shrinkage for Tunable Yolk@Shell Polydopamine@Mesoporous Silica Nanostructures".SMALL (2022):10.

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来源：过程工程研究所

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