Fabrication and evaluation of chitosan/NaYF₄:Yb^{3 +}/Tm^{3 +} upconversion nanoparticles composite beads based on the gelling of Pickering emulsion droplets

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• 作者：Huiqiong Yan¹ ; Xiuqiong Chen¹ ; Jia Shi ; Zaifeng Shi ; Wei Sun ; Qiang Lin ; ^{linqianggroup@163.com} ; Xianghui Wang ; Zihao Dai
• 关键词：Upconversion nanoparticles ; NaYF4 ; Yb3  ; +/Tm3  ; + ;   ; Chitosan ; Composite beads ; Pickering emulsion ; Luminescent property
• 刊名：Materials Science and Engineering: C
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：71
• 期：Complete
• 页码：51-59
• 全文大小：2003 K
• 卷排序：71

文摘

NaYF4:Yb3 +/Tm3 + UCNPs were coated by F127 to improve aqueous dispersibility. NaYF4:Yb3 +/Tm3 + UCNPs were assembled with chitosan to fabricate the composite beads (CMs). Pickering emulsions stabilized by UCNPs exhibited uniform and satisfactory emulsion droplets. The CMs prepared by the gelling of emulsion droplet preserved upconversion luminescent property. The resultant CMs showed good drug-loading capacity, release performance and biocompatibility.