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author:

Wu, Haishan (Wu, Haishan.) [1] | Chen, Yipeng (Chen, Yipeng.) [2] | Zhang, Weiwei (Zhang, Weiwei.) [3] | Khan, Malik Saddam (Khan, Malik Saddam.) [4] | Chi, Yuwu (Chi, Yuwu.) [5] (Scholars:池毓务)

Indexed by:

EI SCIE

Abstract:

Recently emerging perovskite quantum dots (PQDs) with extremely high (near 100%) fluorescence quantum yield (FQY) may have attractive applications in sensing and bioimaging. However, practical applications of PQDs as signal probes in aqueous media, especially in long-time bioimaging, have been greatly limited by the well-known poor stability of PQDs in water. In this work, a single intact CsPbBr3 PQD nanocrystal was well encapsulated with a SiO2 shell using a simple and highly successful coating strategy. In the synthesis, polyvinyl pyrrolidone (PVP) instead of classic oleic acid (OA) and oleylamine (OAm) was used as the ligand and surfactant to increase the affinity between PQDs and SiO2, significantly increasing the coating efficiency of PQD single nanocrystals. Meanwhile, easily hydrolyzed trimethoxysilane (TMOS) was adopted as the silicon source to shorten the hydrolysis time of silane, which obviously decreased the degradation of PQDs during SiO(2 )coating. The obtained PVP-PQD@SiO2 core-shell nanoparticles were uniform in size, maintained a high FQY of PQDs, and exhibited excellent air and ultraviolet (UV) stability. Moreover, PVP-PQD@SiO2 core-shell nanoparticles could be easily modified with trimethoxyoctadecylsilane (C-18) and lecithin, in turn, to assemble a lipid layer on their surfaces, yielding very well water-dispersed, long-term water-stable, highly fluorescent, and low-cytotoxic PVP-PQD@SiO2@ C-18-PC nanoprobes. It was demonstrated that these good properties of the obtained PVP-PQD@SiO2 pC(18)-PC nanoprobes enabled their successful application in cell imaging.

Keyword:

cell imaging core-shell nanostructures fluorescence lecithin perovskite quantum dots SiO2

Community:

  • [ 1 ] [Wu, Haishan]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol, Minist Educ, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Chen, Yipeng]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol, Minist Educ, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Zhang, Weiwei]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol, Minist Educ, Fuzhou 350108, Fujian, Peoples R China
  • [ 4 ] [Khan, Malik Saddam]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol, Minist Educ, Fuzhou 350108, Fujian, Peoples R China
  • [ 5 ] [Chi, Yuwu]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol, Minist Educ, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Wu, Haishan]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 7 ] [Chen, Yipeng]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 8 ] [Zhang, Weiwei]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 9 ] [Khan, Malik Saddam]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 10 ] [Chi, Yuwu]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China

Reprint 's Address:

  • 池毓务

    [Chi, Yuwu]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol, Minist Educ, Fuzhou 350108, Fujian, Peoples R China;;[Chi, Yuwu]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China

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Source :

ACS APPLIED NANO MATERIALS

ISSN: 2574-0970

Year: 2021

Issue: 11

Volume: 4

Page: 11791-11800

6 . 1 4

JCR@2021

5 . 3 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:142

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 18

SCOPUS Cited Count: 20

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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