Stochastic Analysis of Stepwise Fluorescence Quenching Reactions on Single-Walled Carbon Nanotubes: Single Molecule Sensors

Nano Letters ◽  
2008 ◽  
Vol 8 (12) ◽  
pp. 4299-4304 ◽  
Author(s):  
Hong Jin ◽  
Daniel A. Heller ◽  
Jong-Ho Kim ◽  
Michael S. Strano
Nano Letters ◽  
2009 ◽  
Vol 9 (12) ◽  
pp. 3968-3973 ◽  
Author(s):  
Weilin Xu ◽  
Hao Shen ◽  
Yoon Ji Kim ◽  
Xiaochun Zhou ◽  
Guokun Liu ◽  
...  

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5403 ◽  
Author(s):  
Adi Hendler-Neumark ◽  
Gili Bisker

Nanosensors have a central role in recent approaches to molecular recognition in applications like imaging, drug delivery systems, and phototherapy. Fluorescent nanoparticles are particularly attractive for such tasks owing to their emission signal that can serve as optical reporter for location or environmental properties. Single-walled carbon nanotubes (SWCNTs) fluoresce in the near-infrared part of the spectrum, where biological samples are relatively transparent, and they do not photobleach or blink. These unique optical properties and their biocompatibility make SWCNTs attractive for a variety of biomedical applications. Here, we review recent advancements in protein recognition using SWCNTs functionalized with either natural recognition moieties or synthetic heteropolymers. We emphasize the benefits of the versatile applicability of the SWCNT sensors in different systems ranging from single-molecule level to in-vivo sensing in whole animal models. Finally, we discuss challenges, opportunities, and future perspectives.


2009 ◽  
Vol 131 (42) ◽  
pp. 15143-15151 ◽  
Author(s):  
Svetlana Kyatskaya ◽  
José Ramón Galán Mascarós ◽  
Lapo Bogani ◽  
Frank Hennrich ◽  
Manfred Kappes ◽  
...  

2017 ◽  
Vol 22 (3) ◽  
pp. 201 ◽  
Author(s):  
John Castillo ◽  
Herminsul Cano

This paper presents a study of the fluorescence quenching of 1-hydroxypyrene-3,6,8-trisulfonic acid (HPTS) in the presence of single-walled carbon nanotubes (SWCNT) using a fluorescence method. To investigate the quenching mechanism (dynamic or static) of HPTS, Stern-Volmer plots of single walled carbon nanotubes at different temperatures were used. The positive deviation from linearity in Stern-Volmer plots suggests that single walled carbon nanotubes follow a static quenching mechanism evidenced by the formation of a stable ground state complex. The results presented here help us to clarify the quenching mechanism in the interaction of a pyrene derived dye and carbon nanotubes. This study will open new possibilities in the use of the conjugate formed by SWCNTs and HPTS in the fabrication of a<br />biosensor based on intracellular fluorescent probes.


Author(s):  
Keiichi Katoh ◽  
Junya Sato ◽  
Ryo Nakanishi ◽  
Ferdous Ara ◽  
Tadahiro Komeda ◽  
...  

In this study, terbium(III) bis-phthalocyaninato single-molecule magnets (TbPc2 SMMs) were encapsulated in the internal nano space of single-walled carbon nanotubes (SWCNTs) for the first time. The magnetic and electronic properties...


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