Bright and Multicolor Chemiluminescent Carbon Nanodots for Advanced Information Encryption

Shen, Cheng‐Long; Lou, Qing; Lv, Chunxiao; Zang, Jinhao; Qu, Songnan; Dong, Lin; Shan, Chongxin

doi:10.1002/advs.201802331

Cited by 144 publications

(89 citation statements)

References 54 publications

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“…DEF, as polar aprotic solvents, can exacerbate dehydration reaction and increase the conjugation degree of CDs due to effective dehydration reaction happened between citric acid and intramolecules with longer carbon chains (ethyl group from DEF). [ 29,40 –42] Transmission electron microscopy (TEM) has been used to characterize the morphology of the CDs, as shown in Figure a, where the CDs display a broad particle size distribution with an average diameter of around 4 nm. The high‐resolution TEM (HRTEM) image and selected area electron diffraction (SAED) pattern reveal that the CDs have well‐resolved lattice spacing of 0.34 nm, which corresponds to the (002) crystallographic plane of graphitic carbon.…”

Section: Resultsmentioning

confidence: 99%

Near‐Infrared Chemiluminescent Carbon Nanodots and Their Application in Reactive Oxygen Species Bioimaging

et al. 2020

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the ROS molecules, hydrogen peroxide (H 2 O 2 ) is prime reactive species, whose overproduction is closely related to various diseases, including inflammation, cancer, or neurological diseases. [5][6][7][8][9] Thus it is of great importance in monitoring the concentration of H 2 O 2 in living specimens. To this end, a number of mapping tools including "dark" biological processes and radiative recombination mechanism have been developed. Chemiluminescence (CL), a kind of light emission induced by energy transfer from chemical reactions, has evoked considerable interest as one ultrasensitive chemical analysis method with quantification and localization. [10][11][12] Without auto-fluorescent interference and phototoxicity from high-energy excitation light, CL shows high signal-to-noise ratio and low perturbation in sensing H 2 O 2 in vivo compared to photoluminescence (PL) method. [13][14][15] Moreover, unlike the bioluminescence probe requiring the activation of bioactive enzyme, CL imaging of H 2 O 2 is a process of nonenzymatic reaction employing a H 2 O 2 -responsive peroxalate that can transfer chemical energy to the CL emitter. Nevertheless, current CL reporters on H 2 O 2 concentrate mainly on small-molecular dyes, semiconducting polymer, and aggregation induced emission nanoparticles, which suffer from low efficiency, short emission wavelength, and low chemical stability in highly oxidative ROS. [16,17] Thereby, it is meaningful to develop new class of CL nanosensors for the imaging and detecting ROS in vitro and in vivo.Carbon nanodots (CDs), which are considered as discrete quasi-spherical nanoparticles with sizes less than 10 nm, are one kind of promising nanomaterials in bioimaging, photocatalysis, optoelectronics, and sensing owing to its unique properties such as high emission efficiency, good biocompatibility, high photo-stability, and tunable luminescence. [18][19][20][21][22][23][24][25][26][27][28] Recently, the CL properties of CDs in peroxlate-H 2 O 2 system have been investigated, and it has been found that multicolor bright and persistent CL can be obtained from CDs. [29] Therefore, it is practicable to develop versatile CL probes based on CDs to detect ROS via in vivo or in vitro imaging. In general, there are several advantages for CDs as the CL imaging probes: (i) CDs exhibit excellent light emission ability and the luminescence property can be tuned by different methods; [30,31] (ii) CDs with emission Reactive oxygen species (ROS) are generated in the body and related to many pathophysiological processes. Hence, detection of ROS is indispensable in understanding, diagnosis, and treatment of many diseases. Here, near-infrared (NIR) chemiluminescent (CL) carbon nanodots (CDs) are fabricated for the first time and their CL quantum yield can reach 9.98 × 10 −3 einstein mol −1 , which is the highest value ever reported for CDs until now. Nanointegration of NIR CDs and peroxalate (P-CDs) through the bridging effect of amphiphilic triblock copolymer can serve as turn-on probes for the detection an...

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Section: Resultsmentioning

confidence: 99%

Near‐Infrared Chemiluminescent Carbon Nanodots and Their Application in Reactive Oxygen Species Bioimaging

et al. 2020

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“…5e .0 μm-120 mM. It must be stressed that such a wide linear range for the sensor based on ALD-fabricated Au-ZnO heterostructure is the widest linear range among all electrochemical [28][29][30][31][32][33][34][35], chemiluminescent [36,37,72], colorimetric [23][24][25], and fluorometric [37][38][39][40] H 2 O 2 detectors reported to date. In addition to the widest linear measured H 2 O 2 concentrations range and extremely fast response-recovery time, the low LOD of 0.78 mM was achieved for the Au-ZnO heterostructures.…”

Section: H 2 O 2 Sensing Propertiesmentioning

confidence: 98%

Nanoscale Au-ZnO Heterostructure Developed by Atomic Layer Deposition Towards Amperometric H2O2 Detection

Wei

Verpoort

et al. 2020

Nanoscale Res Lett

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Nanoscale Au-ZnO heterostructures were fabricated on 4-in. SiO 2 /Si wafers by the atomic layer deposition (ALD) technique. Developed Au-ZnO heterostructures after post-deposition annealing at 250°C were tested for amperometric hydrogen peroxide (H 2 O 2) detection. The surface morphology and nanostructure of Au-ZnO heterostructures were examined by field emission scanning electron microscopy (FE-SEM), Raman spectroscopy, atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), etc. Additionally, the electrochemical behavior of Au-ZnO heterostructures towards H 2 O 2 sensing under various conditions is assessed by chronoamperometry and electrochemical impedance spectroscopy (EIS). The results showed that ALD-fabricated Au-ZnO heterostructures exhibited one of the highest sensitivities of 0.53 μA μM −1 cm −2 , the widest linear H 2 O 2 detection range of 1.0 μM-120 mM, a low limit of detection (LOD) of 0.78 μM, excellent selectivity under the normal operation conditions, and great long-term stability. Utilization of the ALD deposition method opens up a unique opportunity for the improvement of the various capabilities of the devices based on Au-ZnO heterostructures for amperometric detection of different chemicals.

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“…Chemiluminescence (CL), in which light emission is induced by chemical reactions, has been widely used for chemical detection and bioanalysis due to its high efficiency, low detection limit, simple analysis instrument, low background interference, etc. [3,[19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Recently, various CD-based CL in different chemical reaction has been observed and reported [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

“…For example, Lin et al reported the CL of CDs in NaNO 2 -H 2 O 2 solution and Dong et al observed the CL of CDs in alkali solution [34,35]. Moreover, the CL induced by the CL emitter, peroxalate fuel and H 2 O 2 has been used to sense and image H 2 O 2 and glucose in vitro and in vivo in recently years [20][21][22][23][24][25][26][27][28][29]. Nevertheless, the CL emitter in peroxalate-H 2 O 2 reaction is always limited in organic small-molecular dyes, such as Rhodamine B, Rhodamine 6G and Pentacene, most of which encounter serious obstacles in practical application due to their potential biotoxicity, low photostability, or poor bio-compatibility.…”

Section: Introductionmentioning

confidence: 99%

Chemiluminescent carbon nanodots as sensors for hydrogen peroxide and glucose

Shen

Zheng

et al. 2020

Nanophotonics

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Hydrogen peroxide (H2O2) is an important product generated in the body and related to many pathophysiological processes and glucose metabolism disorder can cause many fatal diseases in living bodies. Therefore, the sensing of H2O2 and glucose is of great significance in disease diagnostics and treatment. Fluorescent carbon dots (CDs) are one new class of nanoprobes for H2O2 and glucose. Nevertheless, the CD-based sensor is always based on its fluorescence response, which is influenced by the auto-fluorescent interference. Herein, efficient fluorescent CDs were synthesized by one-pot solvothermal method, and the CDs exhibit bright and persistent deep-red (DR) chemiluminescence (CL) in bis(2,4,6-trichlorophenyl) oxalate and H2O2 solution with a CL quantum yield of (8.22 ± 0.30) × 10−3, which is amongst the highest values in ever reported nanomaterials for chemical analysis. Employing the CDs as CL nanoprobes, sensitive sensing for H2O2 has been achieved with a detection limit of 11.7 μM, and further for glucose detection with a detection limit of 12.6 μM. The DR CL CDs is promising to be applied in blood glucose analysis or in vivo biosensor.

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Bright and Multicolor Chemiluminescent Carbon Nanodots for Advanced Information Encryption

Cited by 144 publications

References 54 publications

Near‐Infrared Chemiluminescent Carbon Nanodots and Their Application in Reactive Oxygen Species Bioimaging

Near‐Infrared Chemiluminescent Carbon Nanodots and Their Application in Reactive Oxygen Species Bioimaging

Nanoscale Au-ZnO Heterostructure Developed by Atomic Layer Deposition Towards Amperometric H2O2 Detection

Chemiluminescent carbon nanodots as sensors for hydrogen peroxide and glucose

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