Diketopyrrolopyrrole-doped hybrid FONs as two-photon absorbing and dual-emission fluorescent nanosensors for Hg2+
| Autor: | Kaixuan Nie, Shuai Xu, Mengqiu Long, Huanhuan Shi, Bo Dong, Xiao-Fang Jiang, Hui Xu, Xiangyan Duan, Zhengchun Liu |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Nanostructure Materials science Metals and Alloys Nanoparticle 02 engineering and technology Tetraphenylethylene 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences Fluorescence 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Two-photon excitation microscopy chemistry Nanosensor Materials Chemistry Electrical and Electronic Engineering 0210 nano-technology Absorption (electromagnetic radiation) Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical. 265:1-9 |
| ISSN: | 0925-4005 |
| Popis: | Fluorescent organic nanoparticles (FONs) with dual-emission and two-photon fluorescence emission are promising sensing tools. In this work, novel hybrid FONs with two-photon absorption and dual-emission properties were used to detect Hg2+. The FONs were prepared by the co-self-assembly of amphiphilic furyl diketopyrrolopyrrole (DPP1) and tetraphenylethylene (TPE1) in water. Inside the water-soluble FONs, DPP1 worked as a two-photon absorption material and an effective Hg2+ receptor with emission peak at 540 nm. Meanwhile, TPE1, a typical aggregation-induced emission (AIE) molecule, maintained the nanostructure’s stability and offered another distinguishable fluorescent signal at 470 nm as the internal reference. These hybrid FONs were successfully used in the ratiometric and two-photon fluorescence detection of Hg2+ in water. The FONs showed selective and sensitive Hg2+ detection with a limit of detection of ca. 13 nM. Tests on tap-water samples indicated good reliability of the FONs in practical application. Furthermore, the FONs were used in cell imaging, and results demonstrated their potential application in biological sensing. |
| Databáze: | OpenAIRE |
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