ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Hui Ouyang,Jiaxin Xian,Shuai Luo,Lvxia Zhang,Wenwen Wang,Zhifeng Fu
A facile, one-step doping protocol was adopted to synthesize Co single atomic site catalysts (SASCs) in UiO-66 metal–organic frameworks. In view of highly uniform active sites of Co–O6 moieties, the SASCs specifically contribute to catalyzing the generation of a large amount of singlet oxygen instead of superoxide or hydroxyl radicals, which endows Co SASCs with a the remarkable enhancement effect (∼3775 times) on luminol chemiluminescent (CL) emission. Interestingly, monolayer titanium carbide MXenes can drastically quench the CL signal of the Co SASC-boosted luminol reaction by ∼94.6% as highly efficient luminescent absorbents. Furthermore, the emitter–quencher pair of Co SASCs and titanium carbide MXenes was successfully adopted to develop an immunoassay method for cardiac troponin I (cTnI) on an immunochromatographic test strip platform. With a sandwich immunoreaction mode, a titanium carbide MXene-labeled cTnI tracer antibody was captured on the test line of a test strip, which significantly inhibited the CL response of the Co SACs-boosted luminol system. The dynamic range for quantitating cTnI is 1.0–100 pg mL–1, with a detection limit of 0.33 pg mL–1 (3σ). The test strip was successfully used to detect cTnI in human serum samples collected from cardiopathy patients. This proof-of-principle work manifests both the CL enhancement of SASCs and the quenching behavior of MXenes, which shows the thrilling prospects of combinational usage of the two functionalized nanomaterials for tracking biological recognition events.
研究领域:
分析化学
·
材料科学
·
生物医学工程
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Omega
·
2018
·
IF 0
Feng Pan,Yilin Zhang,Zhiqin Yuan,Chao Lu
Carminic acid (CA) extracted from cochineal is widely used in food additives as a natural colorant, and its potential risk to human health makes its detection important. In this work, a layered doubled hydroxide (LDH)–luminol–H2O2 system-based chemiluminescence (CL) platform has been successfully applied for CA sensing. The principle detection consists of two steps: first, LDH adsorbs CA onto the surface via electrostatic attraction; second, CA quenches the CL of the LDH–luminol–H2O2 system via the synergistic effect of CL resonance energy transfer, reduction of reactive oxygen species, and occupation of positively charged centers of brucite-like layers. With this CL approach, 0.5 μM CA is detectable using a CL spectrometer, and the limit of detection is 0.03 μM. This CL system exhibited a linear response to CA in the concentration range from 0.5 to 10 μM. In addition, the practical application of the designed CL sensing system is evaluated with dried pork slice samples.
研究领域:
分析化学
·
食品科学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Jing Lei,Ling Zhang,Mei Li,Wei Liu,Yan Jin,Baoxin Li
Oxygen vacancy is one intrinsic defect in metal oxide materials. Interestingly, we herein found that the surface oxygen vacancy can significantly enhance the catalytic activity of Co3O4 nanowires in the luminol–H2O2 chemiluminescence (CL) reaction. 0.1 ng/mL Co3O4 nanowires containing 51.3% surface oxygen vacancies possessed ca. 2.5-fold catalytic activity of free Co2+ (the best metal ionic catalyst for the luminol–H2O2 CL reaction). The superior catalytic efficiency is attributed to the enhanced adsorption of H2O2 by surface oxygen vacancies, which in turn accelerates the cleavage of O–O bonds and generates •OH radicals. More importantly, the surface oxygen vacancy-rich Co3O4 nanowires retained about 90% catalytic activity after modification with antibodies. The surface oxygen vacancy-rich Co3O4 nanowires were used to label the secondary antibody, and one sandwich-type CL immunoassay of carcinoembryonic antigen was established. The detection limit was 0.3 ng/mL with a linear range of 1–10 ng/mL. This proof-of-concept work proves that surface oxygen vacancy-rich Co3O4 nanowires are suitable for labeling biomolecules in CL bioanalysis and biosensing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2017
·Vol. 5
·期 35
·7335-7341
·
IF 4.543
Ke Li Lin,Tong Yang,Fang Fang Zhang,Gang Lei,Hong Yan Zou,Yuan Fang Li,Cheng Zhi Huang
Herein, dual-functionalized reduced graphene oxide (rGO) hybrids (rGO/AuNP/luminol) with gold nanoparticles (AuNPs) and luminol were prepared via π–π conjugation and electrostatic interaction. The as-prepared rGO/AuNP/luminol hybrids exhibited enhanced and long-persistent chemiluminescence (CL) performance without decay for one hour when mixed with H2O2; this was due to the generation of ˙OH, O2˙−, 1O2, and π–CC˙ species. A sensitive and selective CL sensor based on the rGO/AuNP/luminol hybrid CL enhancing system was developed for cholesterol quantitation in the linear range from 0.71 to 11.43 μM with a detection limit of 0.55 μM. Furthermore, the proposed method was successfully exploited for the determination of cholesterol in human serum samples.
研究领域:
分析化学
·
生物医学工程
·
纳米材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER BULLETIN
·
2023
·
IF 3.2
Huang Jiali,Dong Ruirui,Habibul Marhaba,Zhang Yanhui,Guan Ming,Li Guixin
It is of great significance for human health and environmental monitoring to establish an ultrasensitive assay method for Hg 2+ . In this work, a label-free and highly sensitive electrochemiluminescence (ECL) aptasensor was developed for the sensitive and selective detection of Hg 2+ without additional coreactants. Poly (aniline-luminol)/graphene oxide (P(ANi-Lu)/GO) nanocomposites were prepared, and chitosan (CS) was used to modify the surface of the material positively charged. The prepared P(ANi-Lu)/GO/CS was characterized by scanning electron microscopy (TEM), UV–Vis absorption spectra, fluorescence spectra and electrochemical impedance spectroscopy. The P(ANi-Lu)/GO/CS exhibited a stable and excellent electrochemiluminescence (ECL) property. Aptamer was adsorbed on P(ANi-Lu)/GO/CS sensing interface through electrostatic interaction, and Hg 2+ was detected using T-Hg 2+ -T configuration as ECL intensity controller. The results showed that Hg 2+ can be quantitatively determined in the range of 1.0 × 10 −15 ~1.0 × 10 −7 M with a detection limit of 4.8 × 10 −16 M. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Kaixiang Ji,Shiyu Xia,Xueqing Sang,Abdallah M. Zeid,Altaf Hussain,Jianping Li,Guobao Xu
FeOOH nanorods, as one-dimensional nanomaterials, have been widely used in many fields due to their stable properties, low cost, and easy synthesis, but their application in the field of chemiluminescence (CL) is rarely reported. In this work, FeOOH nanorods were synthesized by a simple and environmentally friendly one-pot hydrothermal method and used for the first time as a catalyst for generating strong CL with luminol without additional oxidant. Remarkably, luminol-FeOOH exhibits about 250 times stronger CL than the luminol-H2O2 system. Its CL intensity was significantly quenched by uric acid. We established a simple, rapid, sensitive, and selective CL method for the detection of uric acid with a linear range of 20–1000 nM and a detection limit of 6.3 nM (S/N = 3). In addition, we successfully applied this method to the detection of uric acid in human serum, and the standard recoveries were 95.6–106.4%.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2021
·
IF 6.986
Fuad Abduro Bushira,Shimeles Addisu Kitte,Yong Wang,Haijuan Li,Ping Wang,Yongdong Jin
In this study, an effective oxygen vacancy (Ov)-involved luminol-dissolved oxygen (O2) electrochemiluminescence (luminol-DO ECL) system was developed and exploited for ECL sensing applications through significant plasmon enhancement of the Ov-involved weak luminol-DO ECL signals by the combined use of Cu-doped TiO2 oxygen vacancy and a Au@SiO2 nanomembrane. The results disclosed that the ECL response of the corresponding system could be synergistically boosted, and the plausible underlying mechanism has been discussed. Furthermore, for the first time, the developed system has been successfully applied for the highly sensitive detection of alkaline phosphatase with a low limit of detection of 0.005 U/L, with an excellent linear range from 0.005 to 10 U/L, as well as good stability and reproducibility.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Zhiyong Guo,Shuping Du,Beibei Chen,Yuhong Sha,Bin Qiu,Xiaohua Jiang,Sui Wang,Xing Li
An ultrasensitive sandwich-type label-free electrochemiluminescence (ECL) immunosensor based on sombrero model for the detection of neurotensin (NT) in human serum and urine was developed. Graphene-hyaluronate-luminol (G-HY-luminol) composite was coated on the surface of the glassy carbon electrode to build the ECL immunosensor, which gave in-situ ECL signals by luminol. A secondary NT unlabelled antibody was used to form the final sandwich immunocomplex as a sombrero model, facilitating reduction of the ECL intensity to improve the sensitivity of detection significantly. Results showed that the inhibition of ECL intensity increased with the logarithm of NT concentration within a wide linear range from 0.001 pg cm −3 to 100 pg cm −3 . In addition, specificity, stability, reproducibility, regeneration and application were satisfactory. Therefore, this developed ECL immunosensor has a potential for practical detection of NT and NT-like peptides with small molecular weight in the clinical diagnostics.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
DOI
高影响因子
LUMINESCENCE
·
2026
·Vol. 41
·期 7
·e70567
·
IF 2.8
Fenqiang Luo,Liyan Zheng
Novel multifunctional metal–organic frameworks prepared by encapsulating luminol, hemin, and glucose oxidase within UiO-66 have been employed for the chemiluminescent determination of glucose via a one-step method. Benefitting from the encapsulating cascade catalyst with luminescent reagent in UiO-66, the as-prepared material can be utilized to fabricate practical glucose sensors with a wide response range, a low detection limit, and a short detection time. This promising sensing material is anticipated to have widespread applications in biotechnology and demonstrates significant potential for the green, selective, and sensitive detection of target analytes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 5
·348
·
IF 5.4
Wang Jing,Fang Zihan,Wang Xinyi,Dong Yongping,Ding Houcheng
Two covalent organic framework (COF) materials—TAPA-TFPB-COF and TAPA-BTT-COF—were synthesized through Schiff-base condensation reactions, and their catalytic performance in the luminol-H 2 O 2 cathodic electrochemiluminescence (ECL) system was systematically investigated. The results demonstrated that TAPA-BTT-COF exhibited superior peroxidase-like activity, which could effectively catalyze the decomposition of H 2 O 2 to generate reactive oxygen species (ROS) and significantly enhance the ECL intensity. Based on this catalytic mechanism, a highly sensitive and selective method for the detection of tyrosine (Tyr) was established, with a linear detection range from 1.0 × 10 − 8 to 1.0 × 10 − 4 mol L − 1 and a detection limit as low as 6.2 × 10 − 10 mol L − 1 . This study innovatively explored and utilized the intrinsic enzyme-like activity of COF materials as a substitute for traditional biological enzymes to construct a stable, cost-effective, and ultrasensitive enzyme-free ECL sensing platform, which might further expand the biosensing application of COF materials.
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 30
·27756-27764
·
IF 6.1
Chunchun Wei,Mixia Chen,Wei Hu,Fei Yan,Yu Cui
An enzymatic electrochemiluminescence (ECL) sensor based on a ternary luminol system is developed for highly sensitive detection of uric acid (UA). The platform integrates nanochannel-confined platinum nanoparticle (PtNPs) and nitrogen-doped graphene quantum dot (NGQDs) nanocomposites (PtNPs–NGQDs) as coreaction accelerators, with urate oxidase (Uox) covalently immobilized at the nanochannel entrances. In this design, an amino-functionalized vertically ordered mesoporous silica film (NH2-VMSF) confined the PtNPs–NGQDs within its nanochannels, while Uox is attached to the outer surface. The confined PtNPs–NGQDs exhibit a synergistic catalytic effect, amplifying the ECL signal of the luminol–H2O2 system by 16.1-fold. In the presence of UA, immobilized Uox catalyzes its oxidation to generate H2O2, which is subsequently decomposed by the PtNPs–NGQDs nanocomposite, leading to enhanced ECL emission. Under optimized conditions, the sensor exhibits two linear response ranges for UA (0.01–1 µM and 1–50 µM) and a low detection limit of 8.1 nM (S/N = 3). The sensor also demonstrates good selectivity and stability, enabling reliable UA quantification in complex urine samples. This work provides a simple and versatile strategy for constructing sensitive ECL enzymatic platforms suitable for the detection of metabolites.
✓ 已验证
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Hang Ao,Jinshan Xiong,Wencheng Xiao,Wenrui Hu,Jie Wu,Huangxian Ju
Owing to the continuous mutations of the coronavirus, the sensitive and accurate detection of the SARS-CoV-2 nucleocapsid protein is still necessary in clinical diagnosis. Aim to the challenge of sensitivity in chemiluminescence (CL) imaging detection and the need for high-throughput clinical screening, this work used imidazole (Im) as an enhancer for hemin-DNA/luminol/H 2 O 2 CL system to propose a CL imaging method for SARS-CoV-2 nucleocapsid protein detection. In this system Im could reduce the hemin-DNA catalyzed oxidation energy of luminol by H 2 O 2 to promote the CL emission through the accelerated breaking of O-O bond of dianionic cyclic peroxide. The enhancement mechanism was demonstrated with theoretical calculations and several characterization techniques. By combining the proximity-induced initiator release with immunological recognition, an initiator-triggered DNA nanomachine was designed to achieve the release of abundant primers for activating hemin-DNA switch. This signal amplification strategy led to strong CL emission for highly sensitive imaging detection of the target. The Im-enhanced hemin-DNA/luminol/H 2 O 2 CL imaging assay exhibited a linear detection range over 4 orders of magnitude with a detection limit down to 2.75 pg/mL for SARS-CoV-2 nucleocapsid protein, exhibiting promising potential of both Im sensitization and the proposed DNA nanomachine to improve the sensitivity of high-throughput CL biosensing for the early diagnosis and clinical screening of the coronavirus and other diseases.
研究领域:
生物分析化学
·
生物传感器
·
临床诊断
·
病毒学
·
纳米生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）