<i>In Vivo</i> Near-Infrared Mediated Tumor Destruction by Photothermal Effect of Carbon Nanotubes

Moon, Hye Kyung; Lee, Sang Ho; Choi, Hee Cheul

doi:10.1021/nn900904h

Cited by 730 publications

(491 citation statements)

References 34 publications

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“…8,9 These characteristics have triggered the exploration of SWCNTs toward a wide range of new applications; 10−20 one example being the use of SWCNT random networks as the active channel material for thin-film transistors (TFTs). 21,22 Given recent advancements in electronic-type and chirality purification of SWCNTs, 23−25 random networks of SWCNTs can be solution deposited on various flexible 11,21,26−28 and rigid substrates 11,21,29−32 and configured as high-performance TFTs.…”

Section: ■ Introductionmentioning

confidence: 99%

Design of Surfactant–Substrate Interactions for Roll-to-Roll Assembly of Carbon Nanotubes for Thin-Film Transistors

et al. 2014

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Controlled assembly of single-walled carbon nanotube (SWCNT) networks with high density and deposition rate is critical for many practical applications, including large-area electronics. In this regard, surfactant chemistry plays a critical role as it facilitates the substrate− nanotube interactions. Despite its importance, detailed understanding of the subject up until now has been lacking, especially toward tuning the controllability of SWCNT assembly for thin-film transistors. Here, we explore SWCNT assembly with steroid-and alkyl-based surfactants. While steroid-based surfactants yield highly dense nanotube thin films, alkyl surfactants are found to prohibit nanotube assembly. The latter is attributed to the formation of packed alkyl layers of residual surfactants on the substrate surface, which subsequently repel surfactant encapsulated SWCNTs. In addition, temperature is found to enhance the nanotube deposition rate and density. Using this knowledge, we demonstrate highly dense and rapid assembly with an effective SWCNT surface coverage of ∼99% as characterized by capacitance−voltage measurements. The scalability of the process is demonstrated through a roll-to-roll assembly of SWCNTs on plastic substrates for large-area thin-film transistors. The work presents an important process scheme for nanomanufacturing of SWCNT-based electronics. 37 printed TFTs based on SWCNT networks have also been reported, demonstrating excellent performances, surpassing that of printed organic devices by a large margin. The performance of SWCNT TFTs is largely dependent on the properties of the assembled random networks. ■ INTRODUCTION38 Specifically, high nanotube density yields high ON-state current, while bundling during assembly increases the OFF-state current. 39,40 Thus, understanding and controlling the nanotube−substrate binding as facilitated through the surfactant−surface interactions is of profound interest, with strong emphasis on enhancing density and reducing bundling. Furthermore, fast nanotube assembly on substrates is essential for practical applications as it determines the process throughput, eventually allowing roll-to-roll (R2R) assembly and processing of SWCNTs over large-areas.Significant research has focused on dispersion of SWCNTs in liquids over the past decade, 41−60 with one promising method involving the use of aqueous solutions with organic surfactants that show long-term stability over several months. 52,54,55 Thin and thick films of SWCNTs from nanotube suspensions have also been widely explored for various applications. 9,15,33,34,36,61 However, the details of the assembly process of SWCNTs for "TFT-grade" random networks have not been fully explored, which is a critical step for optimizing the deposition quality and rate. In addition, most work in literature has focused on the use of commercially available solutions of semiconductor-enriched SWCNTs for TFT fabrication. The surfactants used for these commercial solutions are often not publically known, and a change in the surfactant ...

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Section: ■ Introductionmentioning

confidence: 99%

Design of Surfactant–Substrate Interactions for Roll-to-Roll Assembly of Carbon Nanotubes for Thin-Film Transistors

et al. 2014

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“…Up to now, several PhT-NPs have been proposed including metallic nanoparticles, semiconductor nanocrystals, graphene nanocrystals, and carbon nanotubes. [19][20][21][22][23][24][25][26][27][28] Few previous works have also reported that certain rare earth doped nano-crystals (RE-NPs) could be also used as PhT-NPs, although this possibility has not been demonstrated yet in biocompatible colloidal solutions. 29 Certain RE-NPs have demonstrated to be highly efficient luminescence probes under excitation with Near Infrared (NIR) radiation within the biological windows.…”

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confidence: 99%

Nd3+ doped LaF3 nanoparticles as self-monitored photo-thermal agents

Rocha

Kumar

Jacinto

et al. 2014

Applied Physics Letters

121

105

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In this work, we demonstrate how LaF 3 nanoparticles activated with large concentrations (up to 25%) of Nd 3þ ions can simultaneously operate as biologically compatible efficient nanoheaters and fluorescent nanothermometers under single beam (808 nm) infrared laser excitation. Nd 3þ :LaF 3 nanoparticles emerge as unique multifunctional agents that could constitute the first step towards the future development of advanced platforms capable of simultaneous deep tissue fluorescence bio-imaging and controlled photo-thermal therapies. V C 2014 AIP Publishing LLC.

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“…In cancer treatment, nanoparticles are made from a variety of materials including gold [33], calcium phosphate, and carbon nanotubes [34]. The nanoparticles may carry a payload and be coated on the outside with targeting molecules such as folic acid.…”

Section: Nanoparticlesmentioning

confidence: 99%

Engineering Life into Technology: the Application of Complexity Theory to a Potential Phase Transition in Intelligence

Swan

2010

Symmetry

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Information optimization is a centerpiece phenomenon in the universe. It develops from simplicity, then continuously breaks symmetry and cycles through instability to progress to increasingly dense nodes of complexity and diversity. Intelligence has arisen as the information optimization node with the greatest complexity. A contemporary imbalance is presented in that exponentially growing technology could be poised as a potential sole successor to human intelligence. A complex dynamical system is emerging in response, the engineering of life into technology. Numerous network elements are developing which could self-organize into the next node of symmetry, a phase transition in intelligence.

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In Vivo Near-Infrared Mediated Tumor Destruction by Photothermal Effect of Carbon Nanotubes

Cited by 730 publications

References 34 publications

Design of Surfactant–Substrate Interactions for Roll-to-Roll Assembly of Carbon Nanotubes for Thin-Film Transistors

Design of Surfactant–Substrate Interactions for Roll-to-Roll Assembly of Carbon Nanotubes for Thin-Film Transistors

Nd3+ doped LaF3 nanoparticles as self-monitored photo-thermal agents

Engineering Life into Technology: the Application of Complexity Theory to a Potential Phase Transition in Intelligence

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