Journal ArticleDOI
Water-Soluble Nonconjugated Polymer Nanoparticles with Strong Fluorescence Emission for Selective and Sensitive Detection of Nitro-Explosive Picric Acid in Aqueous Medium
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TLDR
Water-soluble nonconjugated polymer nanoparticles (PNPs) with strong fluorescence emission were prepared from hyperbranched poly(ethylenimine) and d-glucose via Schiff base reaction and self-assembly and developed as a fluorescent probe for fast, selective, and sensitive detection of nitro-explosive picric acid in aqueous medium.Abstract:
Water-soluble nonconjugated polymer nanoparticles (PNPs) with strong fluorescence emission were prepared from hyperbranched poly(ethylenimine) (PEI) and d-glucose via Schiff base reaction and self-assembly in aqueous phase. Preparation of the PEI–d-glucose (PEI-G) PNPs was facile (one-pot reaction) and environmentally friendly under mild conditions. Also, PEI-G PNPs showed a high fluorescence quantum yield in aqueous solution, and the fluorescence properties (such as concentration- and solvent-dependent fluorescence) and origin of intrinsic fluorescence were investigated and discussed. PEI-G PNPs were then used to develop a fluorescent probe for fast, selective, and sensitive detection of nitro-explosive picric acid (PA) in aqueous medium, because the fluorescence can be easily quenched by PA whereas other nitro-explosives and structurally similar compounds only caused negligible quenching. A wide linear range (0.05–70 μM) and a low detection limit (26 nM) were obtained. The fluorescence quenching mechani...read more
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Inner filter effect-based fluorescent sensing systems: A review.
TL;DR: The present review for the first time introduces the state of the art in the progress of the IFE-based fluorescent sensing systems, including sensing strategy, essential conditions, materials option, and their applications for the detection of various target analytes, e.g., ionic species, small molecules, and macromolecules.
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Conversion of Carbon Dots from Fluorescence to Ultralong Room-Temperature Phosphorescence by Heating for Security Applications
TL;DR: F-CDs, prepared with a simple heating treatment from ethylenediamine and phosphoric acid, are found to produce unexpected ultralong room-temperature phosphorescence (URTP), which lasts for about 10 s with a lifetime of 1.39 s, the first example to achieve the conversion of a fluorescence material to URTP by means of an external heating stimulus.
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Clusterization-triggered emission: Uncommon luminescence from common materials
Haoke Zhang,Zheng Zhao,Paul R. McGonigal,Ruquan Ye,Shunjie Liu,Jacky Wing Yip Lam,Ryan T. K. Kwok,Wang Zhang Yuan,Jianping Xie,Andrey L. Rogach,Ben Zhong Tang,Ben Zhong Tang +11 more
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Non-traditional intrinsic luminescence: inexplicable blue fluorescence observed for dendrimers, macromolecules and small molecular structures lacking traditional/conventional luminophores
Donald A Tomalia,Donald A Tomalia,Barbara Klajnert-Maculewicz,Kayla A.-M. Johnson,Hannah F. Brinkman,Anna Janaszewska,David M. Hedstrand +6 more
TL;DR: Recently, a new photoluminescence phenomenon involving inexplicable blue fluorescence emissions was observed in simple aliphatic amines and poly(amidoamine) (PAMAM) dendrimers over two decades ago.
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The polymeric characteristics and photoluminescence mechanism in polymer carbon dots: A review
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References
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TL;DR: This review intends to provide an update of work published since then and focuses on the photoluminescence properties of MOFs and their possible utility in chemical and biological sensing and detection.
Journal ArticleDOI
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Journal ArticleDOI
Polymer sensors for nitroaromatic explosives detection
Sarah J. Toal,William C. Trogler +1 more
TL;DR: Several polymers have been used to detect nitroaromatic explosives by a variety of transduction schemes as mentioned in this paper, which relies on both electronic and structural interactions between the sensing material and the analyte.
Journal ArticleDOI
Economical, Green Synthesis of Fluorescent Carbon Nanoparticles and Their Use as Probes for Sensitive and Selective Detection of Mercury(II) Ions
Wenbo Lu,Xiaoyun Qin,Sen Liu,Guohui Chang,Yingwei Zhang,Yonglan Luo,Abdullah M. Asiri,Abdulrahman O. Al-Youbi,Xuping Sun,Xuping Sun +9 more
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Journal ArticleDOI
Polyamine-Functionalized Carbon Quantum Dots as Fluorescent Probes for Selective and Sensitive Detection of Copper Ions
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