A perylene diimide zwitterionic polymer for photoacoustic imaging guided photothermal/photodynamic synergistic therapy with single near-infrared irradiation

2018 ◽  
Vol 6 (20) ◽  
pp. 3395-3403 ◽  
Author(s):  
Pengfei Sun ◽  
Xiaoxiao Wang ◽  
Gaina Wang ◽  
Weixing Deng ◽  
Qingming Shen ◽  
...  
Keyword(s):  
Near Infrared ◽  
Photoacoustic Imaging ◽  
Perylene Diimide ◽  
Light Irradiation ◽  
Infrared Irradiation ◽  
Nir Light ◽  
Zwitterionic Polymer

A biocompatible zwitterionic polymer (PDS-PDI) was designed for PAI guided synergistic PDT and PTT with single NIR light irradiation.

Near-infrared-activated NaYF4:Yb3+, Er3+/Au/CdS for H2 production via photoreforming of bio-ethanol: plasmonic Au as light nanoantenna, energy relay, electron sink and co-catalyst

2017 ◽  
Vol 5 (21) ◽  
pp. 10311-10320 ◽  
Author(s):  
Wenhui Feng ◽  
Lulu Zhang ◽  
Yan Zhang ◽  
Yu Yang ◽  
Zhibin Fang ◽  
...  
Keyword(s):  
Near Infrared ◽  
H2 Production ◽  
Light Irradiation ◽  
Low Density ◽  
Co Catalyst ◽  
Ethanol Reforming ◽  
Nir Light ◽  
Electron Sink

A sandwich-structured NaYF4:Yb3+, Er3+/Au/CdS architecture delivers enhanced photocatalytic bio-ethanol reforming activity under low-density NIR light irradiation.

Theranostics of Gold Nanoparticles with an Emphasis on Photoacoustic Imaging and Photothermal Therapy

2018 ◽  
Vol 24 (23) ◽  
pp. 2719-2728 ◽  
Author(s):  
Yi Liu ◽  
Wenhui Ma ◽  
Jing Wang
Keyword(s):  
Gold Nanoparticles ◽  
Temperature Control ◽  
Photothermal Therapy ◽  
Recent Progress ◽  
Near Infrared ◽  
Photoacoustic Imaging ◽  
Diagnosis And Treatment ◽  
Chemical Characteristics ◽  
Nir Light ◽  
Physical And Chemical

Gold nanoparticles (AuNPs) are promising biomedical agents in terms of both imaging and therapy, exhibiting excellent physical and chemical characteristics. The actions of AuNPs can be remotely controlled using strong near-infrared (NIR) light, associated with minimal lateral invasion. Employing the photoacoustic (PA) principle, AuNPs integrate imaging and temperature control, affording both diagnosis and treatment mediated by NIR light. We here review recent progress in the theranostic field employing AuNPs to both PA and photothermal ends.

Constructing two-dimensional CuFeSe2@Au heterostructured nanosheets with an amorphous core and a crystalline shell for enhanced near-infrared light water oxidation

Nanoscale ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 2380-2387 ◽  
Author(s):  
Huang Wen ◽  
Hua Li ◽  
Suisui He ◽  
Fengjuan Chen ◽  
Erli Ding ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Oxidation ◽  
Near Infrared ◽  
Light Irradiation ◽  
Infrared Light ◽  
Core Shell ◽  
Two Dimensional ◽  
Near Infrared Light ◽  
Light Water ◽  
Nir Light

The reversed growth of 2D core–shell CuFeSe2@Au heterostructured nanosheets with a crystalline shell and an amorphous core were first prepared and show enhanced photocatalytic activity for water oxidation under NIR light irradiation.

scholarly journals A Polymeric Bilayer Multi-Legged Soft Millirobot with Dual Actuation and Humidity Sensing

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1972
Author(s):  
Shidai Tian ◽  
Shijie Li ◽  
Yijie Hu ◽  
Wei Wang ◽  
Aifang Yu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Near Infrared ◽  
Infrared Irradiation ◽  
Soft Robots ◽  
Humidity Sensing ◽  
Nir Light ◽  
Actuation Mode ◽  
Actuation Method

There are numerous works that report wirelessly controlling the locomotion of soft robots through a single actuation method of light or magnetism. However, coupling multiple driving modes to improve the mobility of robots is still in its infancy. Here, we present a soft multi-legged millirobot that can move, climb a slope, swim and detect a signal by near-infrared irradiation (NIR) light or magnetic field dual actuation. Due to the design of the feet structure, our soft millirobot incorporates the advantages of a single actuation mode of light or magnetism. Furthermore, it can execute a compulsory exercise to sense a signal and analyze the ambience fluctuation in a narrow place. This work provides a novel alternative for soft robots to achieve multimode actuation and signal sensing.

scholarly journals π-Extended perylene diimide double-heterohelicenes as ambipolar organic semiconductors for broadband circularly polarized light detection

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Li Zhang ◽  
Inho Song ◽  
Jaeyong Ahn ◽  
Myeonggeun Han ◽  
Mathieu Linares ◽  
...  
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
High Performance ◽  
Near Infrared ◽  
Polarized Light ◽  
Molecular Structures ◽  
Perylene Diimide ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Nir Light

AbstractDespite great challenges, the development of new molecular structures with multiple and even conflicting characteristics are eagerly pursued for exploring advanced applications. To develop high-performance chiral organic semiconducting molecules, a distorted π-system is required for strong coupling with circularly polarized light (CPL), whereas planar π-stacking systems are necessary for high charge-carrier mobility. To address this dilemma, in this work, we introduce a skeleton merging approach through distortion of a perylene diimide (PDI) core with four fused heteroaromatics to form an ortho-π-extended PDI double-[7]heterohelicene. PDI double helicene inherits a high dissymmetry factor from the helicene skeleton, and the extended π-planar system concurrently maintains a high level of charge transport properties. In addition, ortho-π-extension of the PDI skeleton brings about near-infrared (NIR) light absorption and ambipolar charge transport abilities, endowing the corresponding organic phototransistors with high photoresponsivity of 450 and 120 mA W−1 in p- and n-type modes respectively, along with a high external quantum efficiency (89%) under NIR light irradiations. Remarkably, these multiple characteristics enable high-performance broadband CPL detections up to NIR spectral region with chiral organic semiconductors.

scholarly journals Enhanced Delivery of Thermoresponsive Polymer-Based Medicine into Tumors by Using Heat Produced from Gold Nanorods Irradiated with Near-Infrared Light

Cancers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 5005
Author(s):  
Kohei Sano ◽  
Yumi Ishida ◽  
Toshie Tanaka ◽  
Tatsuya Mizukami ◽  
Tomono Nagayama ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Near Infrared ◽  
Drug Carrier ◽  
Light Irradiation ◽  
Infrared Light ◽  
Solution Temperature ◽  
Dependent Manner ◽  
Thermoresponsive Polymer ◽  
Tumor Bearing ◽  
Nir Light

The aim of this study was to establish a drug delivery system (DDS) for marked therapy of tumors using a thermoresponsive polymer, polyoxazoline (POZ). The effectiveness of the following was investigated: (i) the delivery of gold nanorods (GNRs) to tumor tissues, (ii) heat production of GNR upon irradiation with near-infrared (NIR) light, and (iii) high accumulation of an intravenously injected radiolabeled POZ as a drug carrier in tumors by sensing heat produced by GNRs. When the GNR solution was irradiated with NIR light (808 nm), the solution temperature was increased both in a GNR-concentration-dependent manner and in a light-dose-dependent manner. POZ, with a lower critical solution temperature of 38 °C, was aggregated depending on the heat produced by the GNR irradiated by NIR light. When it was intratumorally pre-injected into colon26-tumor-bearing mice, followed by NIR light irradiation (GNR+/Light+ group), the tumor surface temperature increased to approximately 42 °C within 5 min. Fifteen minutes after irradiation with NIR light, indium-111 (111In)-labeled POZ was intravenously injected into tumor-bearing mice, and the radioactivity distribution was evaluated. The accumulation of POZ in the tumor was significantly (approximately 4-fold) higher than that in the control groups (GNR+/without NIR light irradiation (Light–), without injection of GNR (GNR–)/Light+, and GNR–/Light– groups). Furthermore, an in vivo confocal fluorescence microscopy study, using fluorescence-labeled POZ, revealed that uptake of POZ by the tumor could be attributed to the heat produced by GNR. In conclusion, we successfully established a novel DDS in which POZ could be efficiently delivered into tumors by using the heat produced by GNR irradiated with NIR light.

Heteropoly blue doped polymer nanoparticles: an efficient theranostic agent for targeted photoacoustic imaging and near-infrared photothermal therapy in vivo

2017 ◽  
Vol 5 (2) ◽  
pp. 382-387 ◽  
Author(s):  
Yuping Yan ◽  
Qi Yang ◽  
Jie Wang ◽  
Hongyu Jin ◽  
Jing Wang ◽  
...  
Keyword(s):  
Light Absorption ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Photoacoustic Imaging ◽  
Polymer Nanoparticles ◽  
Step Process ◽  
Theranostic Agent ◽  
Nir Light ◽  
Doped Polymer

We report a two-step process to construct heteropoly blue (HPB) doped polymer nanoparticles with efficient near-infrared (NIR) light absorption and photothermal conversion efficiency of ∼23%.

scholarly journals Nanomaterials for the Photothermal Killing of Bacteria

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1123 ◽  
Author(s):  
Sibidou Yougbaré ◽  
Chinmaya Mutalik ◽  
Dyah Ika Krisnawati ◽  
Heny Kristanto ◽  
Achmad Jazidie ◽  
...  
Keyword(s):  
Human Health ◽  
Structural Properties ◽  
Near Infrared ◽  
Antibacterial Activities ◽  
Multidrug Resistant ◽  
Clinical Applications ◽  
Light Irradiation ◽  
Nir Light ◽  
Current Trends ◽  
Bactericidal Effects

An upsurge in the multidrug-resistant (MDR) bacterial pestilence is a global cause for concern in terms of human health. Lately, nanomaterials with photothermal effects have assisted in the efficient killing of MDR bacteria, attributable to their uncommon plasmonic, photocatalytic, and structural properties. Examinations of substantial amounts of photothermally enabled nanomaterials have shown bactericidal effects in an optimized time under near-infrared (NIR) light irradiation. In this review, we have compiled recent advances in photothermally enabled nanomaterials for antibacterial activities and their mechanisms. Photothermally enabled nanomaterials are classified into three groups, including metal-, carbon-, and polymer-based nanomaterials. Based on substantial accomplishments with photothermally enabled nanomaterials, we have inferred current trends and their prospective clinical applications.

Synergistic effects of lanthanide surface adhesion and photon-upconversion for enhanced near-infrared responsive photodegradation of organic contaminants in wastewater

2020 ◽  
Vol 7 (11) ◽  
pp. 3333-3342
Author(s):  
Jiaying Wang ◽  
Haiying Wang ◽  
Sijin Zuo ◽  
Xuming Jin ◽  
Bingzhu Zheng ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Organic Contaminants ◽  
Near Infrared ◽  
Synergistic Effects ◽  
Light Irradiation ◽  
Ring Cleavage ◽  
Carboxyl Groups ◽  
Surface Adhesion ◽  
Nir Light

Upconversion nanoparticle-TiO2 catalyst with Gd3+-rich surface shows stronger binding coefficiency to the carboxyl groups, resulting in faster ring cleavage and higher mineralization efficiency of rhodamine B under NIR light irradiation.

Catalyst Halogenation Enables Rapid and Efficient Polymerizations with Visible to Near-Infrared Light

2020 ◽  
Author(s):  
Alex Stafford ◽  
Dowon Ahn ◽  
Emily Raulerson ◽  
Kun-You Chung ◽  
Kaihong Sun ◽  
...  
Keyword(s):  
Near Infrared ◽  
Transient Absorption ◽  
Reaction Times ◽  
Infrared Light ◽  
Structure Property ◽  
Light Emitting ◽  
Structure Property Relationships ◽  
Nir Light ◽  
Light Intensities ◽  
Emission Quenching

Driving rapid polymerizations with visible to near-infrared (NIR) light will enable nascent technologies in the emerging fields of bio- and composite-printing. However, current photopolymerization strategies are limited by long reaction times, high light intensities, and/or large catalyst loadings. Improving efficiency remains elusive without a comprehensive, mechanistic evaluation of photocatalysis to better understand how composition relates to polymerization metrics. With this objective in mind, a series of methine- and aza-bridged boron dipyrromethene (BODIPY) derivatives were synthesized and systematically characterized to elucidate key structure-property relationships that facilitate efficient photopolymerization driven by visible to NIR light. For both BODIPY scaffolds, halogenation was shown as a general method to increase polymerization rate, quantitatively characterized using a custom real-time infrared spectroscopy setup. Furthermore, a combination of steady-state emission quenching experiments, electronic structure calculations, and ultrafast transient absorption revealed that efficient intersystem crossing to the lowest excited triplet state upon halogenation was a key mechanistic step to achieving rapid photopolymerization reactions. Unprecedented polymerization rates were achieved with extremely low light intensities (< 1 mW/cm<sup>2</sup>) and catalyst loadings (< 50 μM), exemplified by reaction completion within 60 seconds of irradiation using green, red, and NIR light-emitting diodes.

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