Novel Fe3+ fluorescence probe based on the charge-transfer (CT) molecules

Zhang, Zhaoxia; Li, Feng; He, Chuanyou; Ma, Hongwei; Feng, Yuting; Zhang, Yanan; Zhang, Ming

doi:10.1016/j.snb.2017.08.211

Cited by 55 publications

(25 citation statements)

References 47 publications

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“…In other cases of TPA‐based fluorescent probe, FL quenching was ascribed to fluorescence resonance energy transfer (FRET) or CT mechanism. Based on IR spectroscopic analysis of probe T2 before and after adding Fe 3+ , Zhang believes Fe 3+ is coordinated to alicyclic amine of triazole to form the complex between T2 molecule and Fe 3+ , which could influence the ICT of CT molecule and then lead to FL quenching . In our case, N atom in TPA donor is suspected to serve as a single binding site to target Fe 3+ .…”

Section: Resultsmentioning

confidence: 99%

Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe³⁺: An Insight into the Mechanism Based on A Single Binding Site

et al. 2019

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Triphenylamine (TPA) and binaphthyl (BINAP) have been widely used as building blocks in optoelectronics materials for their good electron donating and transport capability. However, TPA-bonded BINAP type of fluorescent probe towards Fe 3 + , a kind of important metal ion, has not been studied. Herein, a series of TPA-bonded BINAP DÀ A-D type derivatives, 6,6-TB-1, 6,6-TB-2, 7,7-TB-1, 7,7-TB-2, and 7,7-OMeTB-1, was synthesized to investigate their fluorescence (FL) chemosensor properties and electronic effect on sensitivity. Results showed that these probes exhibited highly selective FL quenching toward Fe 3 + in the presence of other common metal ions, and an enhanced sensitivity (limit of detection 1.7 × 10 À 7 M) not inferior to that of other works, could be achieved by introducing electron-donating substituent into TPA group. Then, comprehensive studies, such as NMR, EPR, MALDI-TOF-MS, and XPS combined with Mulliken atomic charges analysis were performed to gain an insight into the probe's binding with Fe 3 + to understand the detection mechanism. Compared with other works on TPAbased fluorescent probes ascribed to fluorescence resonance energy transfer (FRET) or charge transfer (CT) mechanism, we reveal the interaction between Fe 3 + and N atom of TPA and the formation of probe-Fe 3 + complex leading to FL quenching. This work provides a simple strategy for designing a costeffective Fe 3 + fluorescent probe based on a single binding site to target one specific analyte.

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Section: Resultsmentioning

confidence: 99%

Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe³⁺: An Insight into the Mechanism Based on A Single Binding Site

et al. 2019

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“…Intermolecular charge transfer (ICT) is based on electron donors and acceptors, and it governs various classes of technologies such as organic light emitting diodes (OLEDs) and solar cells. On interaction with donor or acceptor groups of organic conjugated molecules, depending on the charge distribution and conjugation extent, the emission intensity might increase or decrease or even lead to highly variable color changes [26].…”

Section: Sensing Mechanism and Mode Of Sensingmentioning

confidence: 99%

“…Among various applications, sensory application is dominating due to the emerging organic chemist skills on tuning the CPs functionalities and fine-tuning it to the desired applications. Various sensing mechanism and modes of sensing furnish unprecedented CCPs sensory responses with ultrahigh sensitivity and selectivity [20][21][22][23][24][25][26]. Huge no of analytes have been monitored with good sensitivity utilizing the high end instrumental techniques such as high performance liquid chromatography (HPLC), gas liquid chromatography (GLC), gel permeation chromatography (GPC), energy dispersive X-ray spectroscopy (EDS), inductive couple plasma-atomic emission spectroscopy (ICP-AES), UV-Vis, and so on.…”

Section: Introductionmentioning

confidence: 99%

Conjugated Copolymers through Electrospinning Synthetic Strategies and Their Versatile Applications in Sensing Environmental Toxicants, pH, Temperature, and Humidity

et al. 2020

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Conjugated copolymers (CCPs) are a class of polymers with excellent optical luminescent and electrical conducting properties because of their extensive π conjugation. CCPs have several advantages such as facile synthesis, structural tailorability, processability, and ease of device fabrication by compatible solvents. Electrospinning (ES) is a versatile technique that produces continuous high throughput nanofibers or microfibers and its appropriate synchronization with CCPs can aid in harvesting an ideal sensory nanofiber. The ES-based nanofibrous membrane enables sensors to accomplish ultrahigh sensitivity and response time with the aid of a greater surface-to-volume ratio. This review covers the crucial aspects of designing highly responsive optical sensors that includes synthetic strategies, sensor fabrication, mechanistic aspects, sensing modes, and recent sensing trends in monitoring environmental toxicants, pH, temperature, and humidity. In particular, considerable attention is being paid on classifying the ES-based optical sensor fabrication to overcome remaining challenges such as sensitivity, selectivity, dye leaching, instability, and reversibility.

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“…Lots of transition metal ions, such as Cu 2+ , Mn 2+ , Ni 2+ , Co 2+ , Mo 2+ , Fe 3+ , Zn 2+ , etc., are beneficial to body function. Among these, Fe 3+ ion is one of the most dominant and abundant in the earth [31] . Fe 3+ ions play a crucial role in many physiological and pathological processes such as enzyme catalysis, oxygen metabolism, electron transfer, RNA and DNA replication, blood production and thermoregulation [32] .…”

Section: Introductionmentioning

confidence: 99%

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

Huang

Shen

et al. 2020

Journal of Materials Science & Technology

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Due to increasingly serious environmental problems, many researchers are investigating green clean-energy to solve the world's energy supply issues. So a strategy that Au nanoparticles (Au NPs) and bismuth sulfide (Bi2S3) NPs are used to evenly decorate TiO2 nanotube arrays (TiO2 NTAs) was carried out. Composite materials demonstrated enhanced solar light absorption ability and excellent photoelectrochemical performance. This was attributed to the presence of Bi2S3 NPs with a narrow band gap and the decoration with noble metallic Au NPs which resulted in local surface plasmon resonance (LSPR) effects. The Au/Bi2S3@TiO2 NTAs composites exhibit improved photocatalytic activity for the degradation of methylene blue (MB) under irradiation of UV and visible light. Moreover, the Au/Bi2S3@TiO2NTAs exhibits high fluorescence emission at 822 nm. Due to the better binding affinity between Bi2S3, TiO2 and Fe 3+ ions, the synthesized nanocomposites exhibit high selectivity to Fe 3+ ions. The number of binding sites for Au/Bi2S3@TiO2 NTAs was estimated to be 1.41 according to the double logarithmic regression method. The calculated value of "K" was 1862 M -1 . Fluorescence emission intensity decreases with increasing concentration (30 μM to 5000 μM). The detection limit of the synthesized sensor is 0.221 µM.

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Novel Fe3+ fluorescence probe based on the charge-transfer (CT) molecules

Cited by 55 publications

References 47 publications

Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe³⁺: An Insight into the Mechanism Based on A Single Binding Site

Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe³⁺: An Insight into the Mechanism Based on A Single Binding Site

Conjugated Copolymers through Electrospinning Synthetic Strategies and Their Versatile Applications in Sensing Environmental Toxicants, pH, Temperature, and Humidity

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

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Novel Fe3+ fluorescence probe based on the charge-transfer (CT) molecules

Cited by 55 publications

References 47 publications

Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe3+: An Insight into the Mechanism Based on A Single Binding Site

Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe3+: An Insight into the Mechanism Based on A Single Binding Site

Conjugated Copolymers through Electrospinning Synthetic Strategies and Their Versatile Applications in Sensing Environmental Toxicants, pH, Temperature, and Humidity

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

Contact Info

Product

Resources

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Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe³⁺: An Insight into the Mechanism Based on A Single Binding Site

Triarylamine‐Bonded Binaphthyl Derivatives as Fluorescence Quenching Probes for Fe³⁺: An Insight into the Mechanism Based on A Single Binding Site