Design and preparation of poly(tannic acid) nanoparticles with intrinsic fluorescence: A sensitive detector of picric acid

Zhao, Yanfang; Xu, Lubin; Kong, Fanlei; Lei, Yu

doi:10.1016/j.cej.2021.129090

Cited by 54 publications

(22 citation statements)

References 42 publications

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“…Importantly, a new absorption can be observed at 1121 cm −1 when CPBI 2 interacts with Cu 2+ . It is consistent with the results in the literature [ 16 , 60 , 61 , 62 ]. In addition, the results of SEM further demonstrate that the original nanoparticle structure of CPBI 2 ( Figure 7 d) has aggregated into a massive flaky structure ( Figure 7 c) after the interaction of CPBI 2 with Cu 2+ .…”

Section: Resultssupporting

confidence: 93%

Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

et al. 2021

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A new type of conjugated polybenzimidazole (CPBI) was synthesized through a simple polycondensation reaction without metal catalysis, and N-alkylation modification was carried out to solve the problems of solubility and fluorescence properties. A series of nano-microsphere polymers CPBIn with large conjugation, good solubility, and strong fluorescence has been successfully used as “turn-off” fluorescent probes for the first time. The results show that, under suitable N-alkylation conditions, the obtained CPBIn can be used as a highly sensitive and selective fluorescent probe for the detection of Cu2+ and Zn2+ at the same time, and their detection limits are both nM levels. In addition, CPBI2 can be designed as an ultra-sensitive IMPLICATION logic gate at the molecular level, cyclically detecting Cu2+. With the test paper containing CPBI2, easy and quick on-site detection can be achieved. This research provides a new idea for the brief synthesis of multifunctional materials.

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Section: Resultssupporting

confidence: 93%

Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

et al. 2021

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“…As important industrial raw materials, nitroaromatic compounds (NACs) are widely used in the dye industries, pharmaceuticals, fireworks and manufacture of explosives, etc. [62,63] If the posttreatment for NACs is improper, there may be serious environmental contamination and deterioration. More seriously, NACs can result in the chronic poisoning of organs, and even cell canceration.…”

Section: Sensing and Mechanism Studies Of Compound 4 A To Nacsmentioning

confidence: 99%

“…Among them, fluorescence detection is more attractive owing to its good selectivity, high sensitivity, operational simplicity and on-site detection. [62][63][64][65] It is worth noting that, although there are many kinds of NACs fluorescent sensing materials reported before, such as porous organic polymers, [62] metal-organic frameworks [69] and metal complexes, [70] etc., most of probes suffer from the different disadvantages, for example, the single detection mode. Therefore, it is remaining a challenge to develop a new platform for NACs practical detection in multiple modes with distinguishing fluorescence signals.…”

Section: Sensing and Mechanism Studies Of Compound 4 A To Nacsmentioning

confidence: 99%

“…of PA. It indicates a strong interaction and the formation of new complexes between 4 a and PA. [63] The quenching behavior was thus further analyzed using the Stern-Volmer plots (Figure S69). When the concentration of PA is below 50 μM a good linear curve versus PA can be observed from the inset of Figure S69.…”

Section: Sensing and Mechanism Studies Of Compound 4 A To Nacsmentioning

confidence: 99%

“…As shown in Figure S77, the fluorescence lifetime of 4 a is almost unchanged before and after the addition of PA, DNP, NP, NA, NBA and NBAc, indicating that the quenching process is static quenching. [63,77] To further demonstrate the mechanism of fluorescence quenching, the dynamic light scattering (DLS) was measured, and the particle size of 4 a upon addition of PA, DNP, NP, NA, NBA and NBAc were analyzed. As shown in Figure S78, the average particle size is almost unchanged before and after the addition of NACs, indicating that there is no aggregation for compound 4 a in the solution before and after interaction with NACs.…”

Section: Sensing and Mechanism Studies Of Compound 4 A To Nacsmentioning

confidence: 99%

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Rational Design and Facile Synthesis of Dual‐State Emission Fluorophores: Expanding Functionality for the Sensitive Detection of Nitroaromatic Compounds

Chen

Luo

Xing

et al. 2021

Chemistry A European J

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Six novel benzimidazole-based D-π-A compounds 4 a-4 f were concisely synthesized by attaching different donor/acceptor units to the skeleton of 1,3-bis(1H-benzimidazol-2-yl)benzene on its 5-position through an ethynyl link. Due to the twisted conformation and effective conjugation structure, these dual-state emission (DSE) molecules show intense and multifarious photoluminescence, and their fluorescence quantum yields in solution and solid state can be up to 96.16 and 69.82 %, respectively. Especially, for excellent photostability, obvious solvatofluorochromic and extraordinary wide range of solvent compatibility, DSE molecule 4 a is a multifunctional fluorescent probe for the visual detection of nitroaromatic compounds (NACs) with the limit of detection as low as 10 À 7 M. The quenching mechanism has been proved as the results of photoinduced electron transfer and fluorescence resonance energy transfer processes. Importantly, probe 4 a can sensitively detect NACs not only in real water samples, but also on 4 a-coated strips and 4 a@PBAT thin films.

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Free‐Standing Janus Nanosheets: Ultrafast Self‐Assembly and Versatile Biphase‐Application

Li,

Jiang,

Wang

et al. 2024

Adv Funct Materials

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The development of stable Janus architectures suitable for biphasic applications holds significant importance. A novel approach is introduced for interfacial supramolecular self‐assembly, resulting in 2D Janus nanosheets (OA‐TA/Fe) exhibiting an amphiphilic nature. These nanosheets consist of hydrophilic coordination complexes of ferric ions (Fe3+) and tannic acid (TA) on one side of both surfaces and hydrophobic alkyl chains on the other side of both surfaces. The synthesis of these 2D Janus nanosheets involves a simple, ultrafast, and environmentally benign process, eliminating the need for time‐consuming multistep procedures and harsh synthetic conditions typically associated with Janus architecture formation. By exploiting the inherent singular anisotropic wettability inherent in OA‐TA/Fe‐2, the efficacy of these innovative Janus nanosheets in the efficient separation of various organic liquid‐in‐water and water‐in‐organic liquid emulsions is elucidated. Subsequent post‐modification of OA‐TA/Fe has facilitated the highly efficient remediation of contaminated oily wastewater, serving as a model biphasic catalysis reaction, wherein the Janus nanosheets function simultaneously as emulsifiers and catalysts within biphasic mixtures. The methodology establishes a rapid self‐assembly approach for the creation of amphiphilic free‐standing Janus nanosheets, offering compelling prospects for their application in diverse fields, as exemplified by, but not limited to, the case studies presented herein.

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Design and preparation of poly(tannic acid) nanoparticles with intrinsic fluorescence: A sensitive detector of picric acid

Cited by 54 publications

References 42 publications

Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

Rational Design and Facile Synthesis of Dual‐State Emission Fluorophores: Expanding Functionality for the Sensitive Detection of Nitroaromatic Compounds

Free‐Standing Janus Nanosheets: Ultrafast Self‐Assembly and Versatile Biphase‐Application

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