DataVXACS Applied Nano MaterialsPaper
journal article·2026-01-09

Efficient Ultraviolet and Violet Upconversion Emissions in Highly Er 3+ -Doped Nanoparticles under 660 nm Excitation

Longfei Song, Kaiwei Zhang, Xiangyu Peng, Yu Chen, Zichen Li, Xukai Chen, Yongjun Hu, Qiuqiang Zhan, Guangxue Feng, Anjun Qin, Wei Wei

ACS Applied Nano Materials· Volume 9· Issue 1
Publisher page
Source abstract

Abstract

Ultraviolet- and violet-emitting upconversion nanoparticles (UCNPs) are promising for applications in photobiology, photochemistry, solid-state lasing, and energy storage. However, their use has been constrained by an inherently low upconversion efficiency. Here, we report that highly Er 3+ -doped NaYF 4 UCNPs (20% Er 3+ ) exhibit efficient ultraviolet (380 nm) and violet (410 nm) upconversion emissions under 660 nm excitation. The coating of an inert shell can effectively suppress surface quenching, further boosting their ultraviolet and violet upconversion efficiencies. We demonstrate that NaYF 4:Er20%@NaYF 4 enables rapid 9,10-phenanthrenequinone-electron-rich alkene (PQ-ERA) photocycloadditions even after light transmission through 2 mm of chicken tissue. Remarkably, their ultraviolet and violet outputs outperform those of conventional Tm 3+ -doped UCNPs. These results establish 660 nm-excited Er 3+ -doped UCNPs as highly efficient red-to-ultraviolet/violet luminescent probes with strong potential for deep-tissue photobiological applications.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials · Nanoplatforms for cancer theranostics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, School of Optoelectronic Science and Engineering

South China Normal University

Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, School of Optoelectronic Science and Engineering

State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, Center for Aggregation-Induced Emission, AIE Institute

South China University of Technology

Centre for Optical and Electromagnetic Research, Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics

Funding

Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology · Basic and Applied Basic Research Foundation of Guangdong Province · State Key Laboratory of Luminescent Materials and Devices · National Natural Science Foundation of China

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