Synthesis of NaYF4:Ho3+/Yb3+ colloidal upconversion phosphor and its application for OCT-based imaging, temperature sensing, fingerprinting and security ink

被引：17
|
作者：
Shwetabh, Kumar [1 ]
Maurya, Sachin K. [1 ]
Banerjee, Abhishek [2 ]
Poddar, Raju [2 ]
Kumar, K. [1 ]
机构：
[1] Indian Inst Technol, Indian Sch Mines, Dept Phys, Opt Mat & Bioimaging Res Lab, Dhanbad 826004, India
[2] Birla Inst Technol, Dept Bioengn & Biotechnol, Biophoton Lab, Ranchi 835215, Jharkhand, India
来源：
NEW JOURNAL OF CHEMISTRY | 2022年 / 46卷 / 45期
关键词：
OPTICAL COHERENCE TOMOGRAPHY; CONTRAST AGENTS; QUANTUM DOTS; NANOPARTICLES; EMISSION; DYES;
D O I：
10.1039/d2nj03878a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this work, an NaYF4:Ho3+/Yb3+ upconversion phosphor in colloidal form was synthesized and then its suitability for image contrast enhancement in optical coherence tomography (OCT) and photothermal (PT) OCT imaging was analysed. A prepared sample showed intense upconversion emission in the green region (541 nm) due to the F-5(4)(S-5(2)) -> I-5(8) transition of the Ho3+ ion. The colloidal stability of the particles was tested in several organic media and the best stability of the particles was found in dimethylformamide (DMF) medium. The applicability of the prepared particles is also demonstrated for temperature sensing, fingerprint detection, and security ink.
引用
收藏
页码：21950 / 21961
页数：12
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