Single‐Walled Carbon Nanotube Near‐Infrared Fluorescent Sensors for Biological Systems

Nitric Oxide Detection Using a Corona Phase Molecular Recognition Site on Chiral Single-Walled Carbon Nanotubes

“…Nanosensors have an important role in various applications, such as imaging, drug delivery systems, molecular recognition, and phototherapy. Nanosensors play an important role in current sensing technologies and provide a deeper understanding of previously unexplored biological phenomena. − Fluorescent nanoparticles are particularly attractive for such tasks thanks to their emission signals, which can serve as an optical reporter for position or environmental properties. ,, SWCNTs are one-atom-thick graphene sheets of carbon atoms joined together to form a cylinder with a specific chirality and size that determine its physical, chemical, electronic, and optical properties. , As is known, carbon can be used in many different fields with its different allotropes. − SWCNTs exhibit outstanding mechanical, electrical, and optical properties, which are used in many fields such as materials science, electronics, sensors, etc. , Semiconductor SWCNTs are excellent signal transducers with stable and long lifetimes, giving bright fluorescence emission in the NIR region between 820 and 1600 nm, compared to organic molecules. , In addition, they do not bleach with light and are nonflashing. − Semiconductor SWCNTs have various sensor applications with their properties. In particular, SWCNTs in semiconductor structures constitute a new class of biosensors with various polymers .…”

Flexible Infrared Responsive Multi-Walled Carbon Nanotube/Form-Stable Phase Change Material Nanocomposites

“…12−17 IR sensing provides attractive applications in the field of optoelectronics, such as thermography, night vision, medical imaging, and surveillance. 7,16,18,19 There have been previous studies on IR photoresponsive CNTs 6 and CNT/polymer nanocomposites, 14,20,21 in which the IR-induced response in electrical conductivity was mainly attributed to the photoexcitation of CNTs producing extra charge carriers 22 and/or the thermal effect causing a change of CNT conductivity. 23−26 However, these materials often exhibit relatively low IR sensitivities and may require complex fabrication processes that tend to hinder their potential applications.…”

“…Carbon nanomaterials, including carbon nanotubes (CNTs) and graphenes, have generated a great deal of interest in the fields of electronics and photonics due to their unique properties. − To achieve an efficient photoresponse, the radiation absorber should have a high absorptivity and low heat capacity. , CNTs are very sensitive to radiation due to their low density, high surface area, and negligible heat capacity. , In particular, CNTs possess unique infrared (IR) responsive properties, including strong photoabsorption, photothermal conversion, and photoacoustic generation due to their π-conjugated structures, thereby making them a promising candidate for IR detecting applications. − IR sensing provides attractive applications in the field of optoelectronics, such as thermography, night vision, medical imaging, and surveillance. ,,, There have been previous studies on IR photoresponsive CNTs and CNT/polymer nanocomposites, ,, in which the IR-induced response in electrical conductivity was mainly attributed to the photoexcitation of CNTs producing extra charge carriers and/or the thermal effect causing a change of CNT conductivity. − However, these materials often exhibit relatively low IR sensitivities and may require complex fabrication processes that tend to hinder their potential applications.…”