Establishment of an immunofiltration strip for the detection of 17β-estradiol based on the photothermal effect of black phosphorescence

The Analyst ◽  
2019 ◽  
Vol 144 (22) ◽  
pp. 6647-6652 ◽  
Author(s):  
Lixia Lu ◽  
Minglu Wang ◽  
Dan Zhang ◽  
Hongyan Zhang
Keyword(s):  
Temperature Sensor ◽  
Black Phosphorus ◽  
Photothermal Effect ◽  
Strip Method ◽  
Readout Signal ◽  
17Β Estradiol

In this study, a novel immunofiltration strip method with temperature as the readout signal based on the photothermal effect of black phosphorus nanosheets was established. The temperature was monitored by a portable temperature sensor.

Biomimetic Extracellular Vesicles Embedded with Black Phosphorus for Molecular Recognition-Guided Biomineralization

2018 ◽  
Author(s):  
Yingqian Wang ◽  
Xiaoxia Hu ◽  
Lingling Zhang ◽  
Chunli Zhu ◽  
Jie Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Extracellular Vesicles ◽  
Inorganic Phosphate ◽  
Physiological Activity ◽  
Medical Engineering ◽  
Matrix Vesicles ◽  
Black Phosphorus ◽  
Photothermal Effect ◽  
Biological Processes ◽  
Extracellular Environment

Extracellular vesicles (EVs) are involved in the regulation of cell physiological activity and the reconstruction of extracellular environment. Matrix vesicles (MVs) are a type of EVs, and they participate in the regulation of cell mineralization. Herein, bioinspired MVs embedded with black phosphorus are functionalized with cell-specific aptamer (denoted as Apt-bioinspired MVs) for stimulating biomineralization. The aptamer can direct bioinspired MVs to targeted cells, and the increasing concentration of inorganic phosphate originated from the black phosphorus can facilitate cell biomineralization. The photothermal effect of the Apt-bioinspired MVs also positively affects mineralization. In addition, the Apt-bioinspired MVs display outstanding bone regeneration performance. Considering the excellent behavior of the Apt-bioinspired MVs for promoting biomineralization, our strategy provides a way of designing bionic tools for studying the mechanisms of biological processes and advancing the development of medical engineering.<br>

Photothermal Effect Induced Negative Photoconductivity and High Responsivity in Flexible Black Phosphorus Transistors

ACS Nano ◽  
2017 ◽  
Vol 11 (6) ◽  
pp. 6048-6056 ◽  
Author(s):  
Jinshui Miao ◽  
Bo Song ◽  
Qing Li ◽  
Le Cai ◽  
Suoming Zhang ◽  
...  
Keyword(s):  
Black Phosphorus ◽  
Photothermal Effect ◽  
High Responsivity ◽  
Negative Photoconductivity

Biomimetic Extracellular Vesicles Embedded with Black Phosphorus for Molecular Recognition-Guided Biomineralization

2018 ◽  
Author(s):  
Yingqian Wang ◽  
Xiaoxia Hu ◽  
Lingling Zhang ◽  
Chunli Zhu ◽  
Jie Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Extracellular Vesicles ◽  
Inorganic Phosphate ◽  
Physiological Activity ◽  
Medical Engineering ◽  
Matrix Vesicles ◽  
Black Phosphorus ◽  
Photothermal Effect ◽  
Biological Processes ◽  
Extracellular Environment

Extracellular vesicles (EVs) are involved in the regulation of cell physiological activity and the reconstruction of extracellular environment. Matrix vesicles (MVs) are a type of EVs, and they participate in the regulation of cell mineralization. Herein, bioinspired MVs embedded with black phosphorus are functionalized with cell-specific aptamer (denoted as Apt-bioinspired MVs) for stimulating biomineralization. The aptamer can direct bioinspired MVs to targeted cells, and the increasing concentration of inorganic phosphate originated from the black phosphorus can facilitate cell biomineralization. The photothermal effect of the Apt-bioinspired MVs also positively affects mineralization. In addition, the Apt-bioinspired MVs display outstanding bone regeneration performance. Considering the excellent behavior of the Apt-bioinspired MVs for promoting biomineralization, our strategy provides a way of designing bionic tools for studying the mechanisms of biological processes and advancing the development of medical engineering.<br>

An immunofiltration strip method based on the photothermal effect of gold nanoparticles for the detection of Escherichia coli O157:H7

The Analyst ◽  
2019 ◽  
Vol 144 (2) ◽  
pp. 573-578 ◽  
Author(s):  
Min Jia ◽  
Jingjing Liu ◽  
Jinghua Zhang ◽  
Hongyan Zhang
Keyword(s):  
Escherichia Coli ◽  
Gold Nanoparticles ◽  
Sensitive Detection ◽  
Photothermal Effect ◽  
Escherichia Coli O157 ◽  
Strip Method

A novel photothermal-immunofiltration strip which can simultaneously achieve sensitive detection and sterilization of Escherichia coli O157:H7 was designed.

scholarly journals Black phosphorus nanosheets and paclitaxel encapsulated hydrogel for synergistic photothermal-chemotherapy

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shoushan Sang ◽  
Zhipeng Jiang ◽  
Ning Xie ◽  
Huaxin Rao ◽  
Kedan Liao ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Treatment ◽  
Tumor Cells ◽  
Black Phosphorus ◽  
Photothermal Effect ◽  
Tumor Treatment ◽  
Gastric Cancer Cells ◽  
Tumor Cell Apoptosis ◽  
Gastric Cancer Treatment

Abstract Gastric cancer treatment remains a major challenge because of its aggressiveness and spread. In this study, we developed a hydrogel system for the treatment of gastric cancer, which can kill tumor cells through photothermal action and drug treatment. Based on the formation of Schiff base linkage, the OSA/AHA/BP/PTX hydrogel was prepared by mixing oxidized sodium alginate (OSA), aminated hyaluronic acid (AHA), black phosphorus (BP), and paclitaxel (PTX) under physiological conditions, which exhibited excellent photothermal effect and slow release ability PTX. Moreover, CCK-8 and live/dead fluorescent confirmed that OSA/AHA/BP/PTX hydrogel could obvious inhibition the proliferation of gastric cancer cells (SGC7901). More importantly, in vivo experiments further show that the prepared hydrogel can significantly improve the tumor treatment effect of tumor-bearing mice by inducing tumor cell apoptosis and inhibiting the proliferation of new tumor cells. Compared with chemotherapy alone, photothermal combined chemotherapy had a better antitumor effect. The results of this study indicate that the composite hydrogel with controlled release of paclitaxel can be used as a candidate material for cancer treatment.

scholarly journals Biomimetic Black Phosphorus Nanosheet-Based Drug Delivery System for Targeted Photothermal-Chemo Cancer Therapy

2021 ◽  
Vol 9 ◽  
Author(s):  
Jinxiu Cao ◽  
Junyang Qi ◽  
Xun Lin ◽  
Yue Xiong ◽  
Fumei He ◽  
...  
Keyword(s):  
Targeted Delivery ◽  
Photothermal Therapy ◽  
Antitumor Effect ◽  
Active Species ◽  
Black Phosphorus ◽  
Photothermal Effect ◽  
Systemic Delivery ◽  
New Strategy ◽  
The Stability

As a biodegradable material, black phosphorus (BP) has been considered as an efficient agent for cancer photothermal therapy. However, its systemic delivery faces several hurdles, including rapid degradation in blood circulation, quick clearance by the immune system, and low delivery sufficiency to the tumor site. Here, we developed a biomimetic nanoparticle platform for in vivo tumor-targeted delivery of BP nanosheets (BP NSs). Through a biomimetic strategy, BP NSs were utilized to coordinate with the active species of oxaliplatin (1,2-diaminocyclohexane) platinum (II) (DACHPt) complexions, and the nanoparticles were further camouflaged with mesenchymal stem cell (MSC)–derived membranes. We showed that the incorporation of DACHPt not only decelerated the BP degradation but also enhanced the antitumor effect by combining the photothermal effect with chemotoxicity. Furthermore, MSC membrane coating increased the stability, dispersibility, and tumor-targeting properties of BP/DACHPt, significantly improving the antitumor efficacy. In short, our work not only provided a new strategy for in vivo tumor-targeted delivery of BP NSs but also obtained an enhanced antitumor effect by combining photothermal therapy with chemotherapy.

scholarly journals An Intelligent Fire-Protection Coating Based on Ammonium Polyphosphate/Epoxy Composites and Laser-Induced Graphene

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 984
Author(s):  
Weiwei Yang ◽  
Ying Liu ◽  
Jie Wei ◽  
Xueli Li ◽  
Nianhua Li ◽  
...  
Keyword(s):  
Shape Memory ◽  
Flame Retardant ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Fire Protection ◽  
Temperature Sensor ◽  
Ammonium Polyphosphate ◽  
Photothermal Effect ◽  
Laser Scribing ◽  
Protection Coating

Fire-protection coatings with a self-monitoring ability play a critical role in safety and security. An intelligent fire-protection coating can protect humans from personal and property damage. In this work, we report the fabrication of a low-cost and facile intelligent fire coating based on a composite of ammonium polyphosphate and epoxy (APP/EP). The composite was processed using laser scribing, which led to a laser-induced graphene (LIG) layer on the APP/EP surface via a photothermal effect. The C–O, C=O, P–O, and N−C bonds in the flame-retardant APP/EP composite were broken during the laser scribing, while the remaining carbon atoms recombined to generate the graphene layer. A proof-of-concept was achieved by demonstrating the use of LIG in supercapacitors, as a temperature sensor, and as a hazard detection device based on the shape memory effect of the APP/EP composite. The intelligent flame protection coating had a high flame retardancy, which increased the time to ignition (TTI) from 21 s to 57 s, and the limiting oxygen index (LOI) value increased to 37%. The total amount of heat and smoke released during combustion was effectively suppressed by ≈ 71.1% and ≈ 74.1%, respectively. The maximum mass-specific supercapacitance could reach 245.6 F·g−1. The additional LIG layer enables applications of the device as a LIG-APP/EP temperature sensor and allows for monitoring of the deformation according to its shape memory effect. The direct laser scribing of graphene from APP/EP in an air atmosphere provides a convenient and practical approach for the fabrication of flame-retardant electronics.

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