Fluorescent detection of Cu(II) by chitosan-based AIE bioconjugate

Liu, Yalan; Wang, Zhengke; Qin, Wei; Hu, Qiaoling; Tang, Ben Zhong

doi:10.1007/s10118-017-1876-y

Cited by 45 publications

(23 citation statements)

References 41 publications

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“…The absorption due to -C-O-Cstretching vibration is appeared at 1262 cm À1 . 44 The IR spectrum of FGO, the appearance of peak at 1168 cm À1 , indicates the presence of fluorine C-F stretching vibration. 45 The XRD patterns of graphene oxide, graphite powder, and FGO has been plotted in Figure 1(B).…”

Section: S C H E M E 1 Synthesis Of Bis(quinoline Amine) Based Amine (Bqa)mentioning

confidence: 99%

Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties

Subalakshmi

Arumugham

Roy

et al. 2021

Polymers for Advanced Techs

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Polyimide nanocomposites having low-k and UV shielding properties have been developed using fluorine functionalized graphene oxide and bis(quinoline amine) based polyimide. The polyimide was synthesized using bis(quinoline amine) and pyromellitic dianhydride at appropriate experimental conditions, and its molecular structure was confirmed through various spectral analysis such as FTIR and NMR.The polyimide (PI) composites were prepared using bis(quinoline amine), pyromellitic dianhydride, and separately filled with 1, 5, 10 wt% of fluorinated graphene oxide (FGO) through in situ polymerization. The polymer composites were characterized using thermo gravimetric analysis (TGA), X-ray powder diffraction (XRD), and scanning electron microscopy (SEM). In addition, the water contact angle, dielectric behavior, and UV-Vis shielding behavior of FGO/PI composites were evaluated. The value of the water contact angle of the polyimide was increased with increment of FGO in the polyimide matrix. The highest water contact angle of polyimide composites observed 108 was obtained for 15 wt% FGO reinforced polyimide composite.The value of the dielectric constant for neat, 1, 5, and 15 wt% FGO reinforced polyimide composites was obtained as 4.5, 3.7, 2.6, and 2.0, respectively. It is also observed from by UV-Vis spectroscopy analysis that the FGO reinforced polyimide composites have good UV shielding behavior.bis(quinoline amine), fluorine functionalized graphene oxide, hydrophobic behavior, low dielectric constant, polyimide matrix and composites, thermal stability, UV shielding behavior | INTRODUCTIONPolymeric composites used in high performance applications have exceptional optical, chemical, thermal, dielectric constant, UV shielding behavior, and physical properties. [1][2][3][4][5] Low conductivity materials are widely used in computers, telecommunications, automotive, printed circuit boards, and consumer electronics systems and are mainly equipped with integrated circuit device to reduce resistancecapacitance time delay, power dissipation, and cross talk. [6][7][8][9][10][11][12] The next generation of consumers can expect demand in miniature electronic products with low cost, high efficiency, and improved functionality. 13 Polyimides (PIs) has been used in various advanced industrial applications such as optoelectronics, aerospace engineering, adhesives, non-linear optical devices, interconnections, and packaging applications due to its high-performance properties, excellent mechanical properties, high thermal stability, low dielectric values (low k value), and good UV radiation-resistant properties. [14][15][16][17] Heterocyclic core contain polyimides and nanocomposites provide high-temperature resistant

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Section: S C H E M E 1 Synthesis Of Bis(quinoline Amine) Based Amine (Bqa)mentioning

confidence: 99%

Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties

Subalakshmi

Arumugham

Roy

et al. 2021

Polymers for Advanced Techs

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“…The development of non-conjugated polymers provides more possibilities for their applications in the biological field such as imaging, detection, trace analysis and so on. [25,26]…”

Section: Chemistryselectmentioning

confidence: 99%

“…In brief, the non‐conjugated AIE‐polymers can be directly prepared from the accessible non‐AIE monomers. The development of non‐conjugated polymers provides more possibilities for their applications in the biological field such as imaging, detection, trace analysis and so on [25,26] …”

Section: Introductionmentioning

confidence: 99%

Synthesis and Aggregation‐Induced Emission of Polyamide‐Amines as Fluorescent Switch Controlled by Hg²⁺‐Glutathione

et al. 2022

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In this study, a series of polyamide‐amines (PAAs) were prepared by Michael addition reaction of piperazine derivatives with N, N‐bisacrylamidepiperazine (BAP). An obvious aggregation‐induced emission (AIE) effect was observed for PAAs with fluorescence emission at 425–525 nm and affected by the structure, excitation wavelength, pH value, temperature, PAAs concentration and precipitant (acetone). The piperazine rings and amides groups on PAAs backbone contribute to their AIE by the clusterization‐triggered emission (CTE) mechanism, in accordance with the red‐shift of time‐dependent density functional theory (DFT). The DFT results proved the influence of packing way on aggregation luminescence, clarified the cluster mechanism of luminescences, and the ultraviolet absorption spectrum of PAAs. Additionally, based on the coordination, Hg2+ ions effectively quenched the fluorescence intensity of PAAs and showed enhanced quenching effect with the increase of concentration of Hg2+ ions. And also, a reducing agent, glutathione, can restore the fluorescence of PAAs solution mixed with Hg2+ ions, by which realizes the reversible switching process between fluorescence on and fluorescence off.

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“…This is in consistent with the phenomenon of "crystallization-induced blue emission". [18] The emission peaks of E-BFBM-TPE and BFBM-TPE in crystal state and as-prepared state were both at about 423 and 420 nm, which also blueshifted compared to that of Z isomer. When E-BFBM-TPE crystal was sheared by a glass or spatula, no TL emission could be observed, even in dark.…”

mentioning

confidence: 92%

Fluorine‐Substituted Tetraphenylethene Isomers with Different Triboluminescence Properties

Liu

Wang

et al. 2019

ChemPhotoChem

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Three isomers of fluorine‐substituted tetraphenylethenes (TPE) demonstrate totally different triboluminescence (TL) properties resulting from minor structural differences. Studying the photophysical properties, packing models, and the single‐crystal structure combined with density functional theory (DFT) calculations confirmed that bright TL emission can be attributed to the high emission intensity, strongintermolecular interactions and large dipole moments in the solid state, indicating that the introduction of fluorine atoms is an effective approach to obtain and modify the TL performance.

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Fluorescent detection of Cu(II) by chitosan-based AIE bioconjugate

Cited by 45 publications

References 41 publications

Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties

Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties

Synthesis and Aggregation‐Induced Emission of Polyamide‐Amines as Fluorescent Switch Controlled by Hg²⁺‐Glutathione

Fluorine‐Substituted Tetraphenylethene Isomers with Different Triboluminescence Properties

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Fluorescent detection of Cu(II) by chitosan-based AIE bioconjugate

Cited by 45 publications

References 41 publications

Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties

Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties

Synthesis and Aggregation‐Induced Emission of Polyamide‐Amines as Fluorescent Switch Controlled by Hg2+‐Glutathione

Fluorine‐Substituted Tetraphenylethene Isomers with Different Triboluminescence Properties

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Synthesis and Aggregation‐Induced Emission of Polyamide‐Amines as Fluorescent Switch Controlled by Hg²⁺‐Glutathione