A unique dansyl-based chromogenic chemosensor for rapid and ultrasensitive hydrazine detection

Zhao, Xuan-Xuan; Zhang, Jinfeng; Liu, Wei; Zhou, Shuai; Zhou, Zequan; Xiao, Yu-Hao; Xi, Gang; Jiang, Miao; Zhao, Bao‐Xiang

doi:10.1039/c4tb01192a

Cited by 88 publications

(70 citation statements)

References 38 publications

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“…It can hence be concluded that NTPE-DCV has a wide working pH range of 3-10 for hydrazine detection, which shows general suitability and better tolerance to acidic or basic conditions compared to previous reports. [42][43][44] The same trend is also observed for TPE-DCV and MTPE-DCV. …”

Section: Hydrazine Detection In Solutionsupporting

confidence: 81%

AIEgens for real-time naked-eye sensing of hydrazine in solution and on a paper substrate: structure-dependent signal output and selectivity

Zhang

Song

et al. 2016

J. Mater. Chem. C

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Paper-based assay is a promising alternative sensing technology due to its portability, low cost and ease of operation compared to solution sensing method. Most of the current fluorophores suffer from aggregation-caused quenching, which affects their signal output in the solid state. Although fluorogens with aggregation-induced emission (AIEgens) have attracted intense research interest for solution assays, they have been rarely employed for solid phase detection due to their high emissivity in aggregated state. In this work, three fluorogens TPE-DCV, MTPE-DCV and NTPE-DCV were designed and synthesized by integration of intramolecular charge transfer and AIE characteristics to fine-tune their absorption and emission maxima. Among the three AIEgens, NTPE-DCV gives the best response to hydrazine, with a detection limit of 143 ppb in solution. In addition, the NTPE-DCV stained paper strip offers fluorescence turn-on from dark to yellow for 1 mM hydrazine solution or 1% hydrazine vapor for naked-eye sensing. It was also found that the fluorogen with stronger electron donor (e.g. NTPE-DCV) showed better selectivity to hydrazine over glutathione. The practical example of hydrazine detection elucidates a general strategy for design of AIE probes that are compatible with both solution and paper-based assays with high sensitivity and rapid signal readout.

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Section: Hydrazine Detection In Solutionsupporting

confidence: 81%

AIEgens for real-time naked-eye sensing of hydrazine in solution and on a paper substrate: structure-dependent signal output and selectivity

Zhang

Song

et al. 2016

J. Mater. Chem. C

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“…35,40,57 In our case the outstanding electrochemical response of GAP3 for N 2 H 4 was further promoted to detect this toxic molecule in low concentration level through the adopted electrochemical pathway. 0.31 µM.…”

Section: Calibration Curve and Limit Of Detectionmentioning

confidence: 79%

“…The GAP material was successfully employed as an electrochemical sensor for the low level detection of hydrazine (N 2 H 4 ). In contrast to other adopted methods (luminescence, 35,40 spectrometry, 36, 41 chromatography 42 etc. [35][36][37] It is important to note that N 2 H 4 is highly carcinogenic and mutagenic.…”

Section: Introductionmentioning

confidence: 95%

Au@Pd core–shell nanoparticles-decorated reduced graphene oxide: a highly sensitive and selective platform for electrochemical detection of hydrazine

et al. 2015

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Tailored fabrication of noble metal based bimetallic nanoparticles decorated reduced graphene oxide (rGO) is highly demanding for their use as a clean, recyclable substrate for electrochemical performances. Here, we have successfully prepared Au core @Pd shell with an average size of ~11.5 nm on rGO support (denoted as GAP) through a surfactant-free, one step synthetic protocol. Use of 2-propanol as a solvent as well as reducing agent for the precursors demonstrates the designed process is economically preferable for scalable synthesis of the desired GAP material. Comparative electrocatalytic efficiency in term of hydrazine (N 2 H 4 ) oxidation discloses the optimized noble metals loading on rGO nanosheets and also the composition to capitalize maximum advantage from the as-synthesized GAP material. Then the most effective electrocatalyst GAP3 with optimized constituents was applied as a substrate to determine N 2 H 4 electrochemically down to a trace concentration level with high selectivity and sensitivity. The limit of detection (LOD) from GAP3 is calculated to be 0.08 µM with a linear range of 2−40 µM from the chronoamperometric (CA) result at -0.15 V vs. SCE. The novelty of N 2 H 4 detection by the designed substrate becomes

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“…[45][46][47] For the pattern of the cationic PS, the characteristic broad peak at around 2θ=20.04° is obtained, which indicates the amorphous structure. 48 The pattern of PS/GO core-shell microspheres from 3 wt % cationic PS 002 and 1 wt % GO is similar to that of the cationic PS, and an only difference is the appearance of a weak peak at about 10.26°, which contributed from GO binding to the microspheres surface. 44 …”

Section: Electrostatic Self-assemblymentioning

confidence: 88%

A method to construct perfect 3D polymer/graphene oxide core–shell microspheres via electrostatic self-assembly

Liu

Zhou

et al. 2015

RSC Adv.

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ARTICLE This journal isIn this study, a method to construct perfect three-dimensional (3D) polymer/graphene oxide (GO) core-shell microspheres was proposed using the electrostatic self-assembly. 2D GO nanosheets were successfully wrapped onto polymer microsphere to form a perfect 3D coreshell structure with a uniform shell thickness under the action of the electrostatic attraction force. The GO nanosheets with 1.5-2 nm thickness and the area over 2×1 μm 2 were firstly prepared from graphite, and then the cationic polystyrene (PS) microspheres with 0.246% and 0.715% surface concentration of -N(CH 3 ) 3 + were successfully synthesized. After that, PS/GO core-shell microspheres were constructed between GO nanosheets and the cationic PS microspheres. It was found that different cationic PS microspheres leaded to different assembly speed. The SEM and TEM images of rippled silk waves on the surface of PS/GO core-shell microspheres not only indicated the perfect polymer/GO core-shell structure, but also presented a strong binding between two materials. It was also revealed that the thickness of the shell of PS/GO core-shell microspheres was under good control, and the thickness of the shell from different cationic PS microspheres was 9-13 nm and 80-100 nm, respectively. The method proposed here has proved to be a valuable tool for the assembly of 3D microstructures from polymers and graphene oxide (or graphene).

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A unique dansyl-based chromogenic chemosensor for rapid and ultrasensitive hydrazine detection

Cited by 88 publications

References 38 publications

AIEgens for real-time naked-eye sensing of hydrazine in solution and on a paper substrate: structure-dependent signal output and selectivity

AIEgens for real-time naked-eye sensing of hydrazine in solution and on a paper substrate: structure-dependent signal output and selectivity

Au@Pd core–shell nanoparticles-decorated reduced graphene oxide: a highly sensitive and selective platform for electrochemical detection of hydrazine

A method to construct perfect 3D polymer/graphene oxide core–shell microspheres via electrostatic self-assembly

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