Bioapplications of carbon nanotubes have been predicted and explored ever since the discovery these one-dimensional allotropes. Indeed, many interesting unique properties potentially useful in a variety biological biomedical systems devices. Significant progress has made effort to overcome some fundamental technical barriers toward bioapplications, especially on issues concerning aqueous solubility biocompatibility design fabrication prototype biosensors. In this article we take...

A derivatized porphyrin with long alkyl chains, 5,10,15,20-tetrakis(hexadecyloxyphenyl)-21H,23H-porphine, is selective toward semiconducting single-walled carbon nanotubes (SWNTs) in presumably noncovalent interactions, resulting significantly enriched SWNTs the solubilized sample and predominantly metallic residual solid according to Raman, near-IR absorption, bulk conductivity characterizations.

A coumarin-based colorimetric chemosensor 1 was designed and synthesized. It exhibits good sensitivity selectivity for the copper cation over other cations such as Zn2+, Cd2+, Pb2+, Co2+, Fe2+, Ni2+, Ag+, alkali alkaline earth metal both in aqueous solution on paper-made test kits. The change color is very easily observed by naked eye presence of Cu2+ cation, whereas do not induce a change. quantitative detection preliminarily examined.

We study a variety of carbon nanotubes (CNTs) as cost-effective catalysts for the electrochemical nitrate (NO3–) reduction reaction, which holds promise converting environmental NO3– pollutants into useful ammonia (NH3) products. discover that pristine multi-walled (MWCNTs) exhibit notable electrocatalytic activity to NH3 in near-neutral electrolyte. Single-walled have even higher and selectivity than MWCNTs this reaction. Results from control experiments confirm originates native surface...

A single-walled carbon nanotube was exploited for its semi-flexible pseudo-one-dimensional nanostructure as a unique scaffold to display multivalent carbohydrate ligands, with specific demonstration showing that galactosylated nanotubes were effective in the capturing of pathogenic Escherichia coli solution.

Flexible electronics with highly thermal stability and mechanical strength are needed in advanced transportation systems. Semiconducting single‐walled carbon nanotubes one of the leading active materials for such thin film transistors because they printable, flexible, thermally stable, mechanically strong. Dielectrics large capacitance another major component, polymer electrolytes printed flexible electronics, but suffer from poor low operating temperature. Here, a transparent, stable...

A series of zwitterionic molecules were synthesized by addition iodoalkanes to sodium tetrakis(1-imidazolyl)borate (NaBIm4). Single substitution at the N3 site leads compounds designated as Cn-BIm4 (n = 1, 6, 12, 16), where subscript corresponds number carbon atoms in linear alkyl chain. Metrical parameters molecular structure C1-BIm4 determined single crystal X-ray diffraction studies confirms nature and used calculate dipole moment. Compounds can be improve electroluminescence efficiencies...

Single-walled carbon nanotube thin-film transistor (SWCNT TFT) and circuits were fabricated by fully inkjet printing gold nanoparticles as source/drain electrodes, semiconducting SWCNT thin films channel materials, PS-PMMA-PS/EMIM TFSI composite gel gate dielectrics, PEDOT/PSS electrodes. The ionic gated TFT shows reversible conversion from p-type behavior in air to ambipolar features under vacuum due oxygen doping films. threshold voltages of inverters are largely shifted the low value (0.5...

A first electrolyte gated polymer light-emitting transistor (PLET) is reported with high performances up to 4000 cd m−2 brightness and 2.3% external quantum efficiency. This novel (PE) PLET characterized interpreted as reversible electrochemical doping of under the assistance PE at their interface, leading current density electroluminescence modulation by applied gate potential. As a service our authors readers, this journal provides supporting information supplied authors. Such materials...

Single-walled carbon nanotubes (SWNTs) were solubilized by attaching functional groups to the nanotube-bound carboxylic acids in esterification and various amidation reactions. The solubility made it possible not only characterize functionalized SWNT samples solution but also quantitatively measure UV/vis/NIR absorption spectra of samples. nanotube contents soluble determined terms NMR signal integrations reference internal standards through thermal gravimetric analyses. absorptivity results...

Low-cost and low-voltage active matrix displays were fabricated by simply patterning gate electrode arrays on a polymer electrolyte (PE)-coated light-emitting diode (PLED). Structurally, PE capacitor seamlessly stacked PLED sharing common Al:LiF composite (PEC|PLED). This monolithic integrated organic optoelectronic device was characterized interpreted as the tunable work function (surface potential) because of perturbation accumulated ions PEC charging discharging. The modulation electron...

Single-walled carbon nanotube (SWCNT) networks deposited from a purple single chirality (6,5) SWCNT aqueous solution were electrically characterized as pure semiconductors based on metal/semiconductor/metal Schottky contacts using both complex instruments and portable device. Both air-stable PMOS (p-type metal-oxide-semiconductor) NMOS (n-type metal-oxide-semiconductor, resembling amorphous silicon) thin film transistors fabricated in large scale showing the characteristics of fA off current...

A C60-centered dendritic adduct with 12 symmetrically attached pyrene species was synthesized and found to have relatively simple fluorescence emission kinetics, in particular, the mono-exponential decay of significant excimer emission.

The material selection, working mechanism and target application in the development of electrolyte-gated light-emitting transistors are summarized.

Surface reconstruction of electron injection layers based on conjugated oligoelectrolytes atop an electroluminescent layer occurs in the presence air. The proposed mechanism involves hydration and concomitant increase interfacial energy with underlying hydrophobic surface followed by dewetting via a nucleation process. No such changes are observed case polyelectrolyte, presumably because lower mobility polymer chains leads to kinetically locked bilayer.

We report vertical electrolyte-gated red, green, and blue phosphorescent small-molecule organic light-emitting diodes (OLED), in which light emission was modified by tuning the electron injection via electrochemical doping of layer 4,4-bis(N-carbazolyl)-1,1-biphenyl (CBP) under assistance a polymer electrolyte. These devices comprise an electrolyte capacitor on top conventional OLED, with interfacial contact between CBP OLEDs achieved through porous cathode. exhibit tunable luminance 0.1 10...

An electrolyte-gated vertical organic transistor (VOT) was reported with high transconductance (1.0 mS) and 104 ION/IOFF ratio. Under the gating potential, filtrated ions through porous Ag electrode stabilized electrochemically p-doped poly(3-hexylthiophene) (P3HT) to form ohmic contact electrodes for enhanced charge injection. The gate modulation involving mobile reflected in their slow temporal responses long retention time. VOT circuit demonstrated by loading a 10 KΩ resistor exhibit...

White electroluminescence (EL) of a single-component polymer (SCP) in light-emitting diode (PLED) was measured to show blue-green and red emission peaked at 494 627 nm spectrally, the CIE coordinates (0.36, 0.34), color temperature 6247 K. The electric excited is significantly different from obtained photoluminescence (PL) spectrum, attributing formation electromers under an field. white EL SCP also investigated electrolyte-gated organic which luminance tuned 0.3 cd/m2 VG = −4 V 6000 7 bias...

A systematic investigation on the unusual attachment of labile deuterium to carbon nanotubes in deuterated water and alcohols is reported. The were solubilized through established functionalization nanotube-bound carboxylic acids allow solution-phase reaction characterization. was found under several experimental conditions, including use ethanol as a co-reactant nanotube refluxing functionalized or simply purified alcohols. solubility samples common organic solvents allowed unambiguous (2)H...

The emission of the cationic polyelectrolyte poly[9,9‘-bis(6‘ ‘-N,N,N-trimethylammonium)hexyl)fluorene-alt-4,7-(2,1,3-benzothiadiazole) dibromide] (PFBT) is effectively quenched via photoinduced electron transfer by negatively charged C60 derivative sodium diphosphorate methano[60]fullerene (SDPMF). Stern−Volmer analysis shows quenching constant as high 2.8 × 1012 M-1, consistent with formation ground state complexes. Addition Cy5-labeled ssDNA to PFBT leads concurrent FRET Cy5 and a that...

Abstract Different from extensively reported carbon nanotubes‐polyamide (PA) composite membranes, this work reports the scalable, low‐cost manufacturing of metallic single‐walled nanotubes network supported PA reverse osmotic desalination membranes. Metallic (SWCNTs) separated high‐pressure monoxide conversion (HiPCO) SWCNTs with a diameter ranging 0.6 to 1.2 nm are deposited on polyethersulfone (PES) films by replacing surfactants around dispersed in aqueous solution, for supporting uniform...

In contradiction to the long-standing optical depletion of single-walled carbon nanotubes (SWCNT) by acid doping, this work reports blue-shifted and density-increased S11 (the first Van Hove singularity transition) peak absorption spectra single-chirality (6,5) SWCNT dispersed in specific surfactant compositions such as 1% SDS (sodium dodecyl sulfate) /1% SC cholate) 2% SDS/0.5% SC, which were caused addition acid. These anomalous changes can be reversed adding base, they are discussed on...