scholarly journals Laser generated gold nanocorals with broadband plasmon absorption for photothermal applications

Nanoscale ◽  
2015 ◽  
Vol 7 (32) ◽  
pp. 13702-13714 ◽  
Author(s):  
Annamaria Poletti ◽  
Giulio Fracasso ◽  
Giamaica Conti ◽  
Roberto Pilot ◽  
Vincenzo Amendola
Keyword(s):  
Surface Chemistry ◽  
Laser Irradiation ◽  
Conversion Efficiency ◽  
Self Assembly ◽  
Near Infrared ◽  
Infrared Region ◽  
Green Method ◽  
Plasmon Absorption ◽  
Near Infrared Region

Gold nanocorals (AuNC) are obtained by a “green” method consisting of laser irradiation, followed by anisotropic self-assembly without templating agents. The AuNC dispersion has broadband plasmon absorption from the visible to near infrared region, unitary light-to-heat conversion efficiency, versatile surface chemistry and biocompatibility.

scholarly journals A narrow-bandgap benzobisthiadiazole derivative with high near-infrared photothermal conversion efficiency and robust photostability for cancer therapy

2015 ◽  
Vol 51 (20) ◽  
pp. 4223-4226 ◽  
Author(s):  
Shuo Huang ◽  
Ravi Kumar Kannadorai ◽  
Yuan Chen ◽  
Quan Liu ◽  
Mingfeng Wang
Keyword(s):  
Cancer Therapy ◽  
Cancer Cells ◽  
Conversion Efficiency ◽  
Near Infrared ◽  
Therapeutic Agent ◽  
Infrared Region ◽  
Strong Absorption ◽  
Agent Based ◽  
Narrow Bandgap ◽  
Near Infrared Region

A novel photothermal therapeutic agent based on a narrow-bandgap benzobisthiadiazole derivative shows strong absorption in the near-infrared region, high photothermal efficiency and robust photostability for treatment of cancer cells.

scholarly journals Near-infrared laser-mediated drug release and antibacterial activity of gold nanorod–sputtered titania nanotubes

2018 ◽  
Vol 9 ◽  
pp. 204173141879031 ◽  
Author(s):  
Kyoung-Suk Moon ◽  
Young-Bum Park ◽  
Ji-Myung Bae ◽  
Seunghan Oh
Keyword(s):  
Electron Microscopy ◽  
Laser Irradiation ◽  
Gold Nanorods ◽  
Near Infrared ◽  
Infrared Region ◽  
Infrared Laser ◽  
Gold Nanorod ◽  
Titania Nanotubes ◽  
Infrared Laser Irradiation ◽  
Near Infrared Region

The infection control of implants is one of the hot issues in the field of medicine and dentistry. In this study, we prepared gold nanorod–sputtered titania nanotubes on titanium surface, which is the main component of implant material, and aimed to estimate the remote-controlled tetracycline release and resulting antibacterial effects of gold nanorod–sputtered titania nanotubes using near-infrared laser irradiation. Gold nanorods prepared by ion plasma sputtering (aspect ratio = 1:3) showed optical properties like those of chemically synthesized gold nanorods, exhibiting photothermal effects in the near-infrared region, as demonstrated using field-emission scanning electron microscopy, transmission electron microscopy, and diffuse ultraviolet–visible–near-infrared spectrophotometry. In addition, a 2 wt% tetracycline/polycaprolactone mixture was found to be the most suitable experimental group to demonstrate the biological compatibilities and antibacterial activities. The results of antibacterial agar diffusion tests and near-infrared-mediated tetracycline release tests in vivo confirmed that remote-controlled tetracycline elution using near-infrared laser irradiation was highly effective. Therefore, gold nanorod–sputtered titania nanotubes would be expected to enable the continued use of the photothermal therapy of gold nanorods and extend the limited use of titania showing photocatalytic activity only within the ultraviolet-to-near-infrared region.

Ligand Influence Versus Electronic Configuration of d-metal Ion in Determining the Fate of NIR Emission from LnIII Ions: A Case Study with CuII, NiII and ZnII Complexes.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha
Keyword(s):  
Metal Ion ◽  
Selection Rule ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Direct Excitation ◽  
Characteristic Emission ◽  
Nir Emission ◽  
Near Infrared Region

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...

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