Due to complex structure and surface functionalities, photoluminescence mechanisms of Carbon Dots are unknown, it is challenging synthesize achieve the desired optical properties. Herein, simultaneously exhibiting high-color-purity (FWHM~24 nm) long wavelength one-photon fluorescence emission at 620 nm NIR induced two-photon 630 680 prepared by edge amino protonation treatment. Systematic analysis reveals that 2,3-diaminophenazine changes molecular state Dots, decreases photon transition...

In nanoscience, chirality has shown a significant ability to tune materials' electronic properties, whereas imposing macrochirality into the regulation of singlet–triplet features organic optoelectronics remains challenging research topic. Since tuning for singlet and triplet excited-state properties in single π-functional molecule connects its multicolor luminescent application potential improvement internal quantum efficiency, we here report that supramolecular can be employed toggle...

Unique molecular self-assemblies were applied to the design of new materials that can achieve phosphorescence/fluorescence dual emission characteristics.

Due to the complicated nature of carbon dots (CDs), fluorescence mechanism red fluorescent CDs is still unrevealed and features highly controversial. Reliable effective strategies for manipulating are urgently needed. Herein, with one-photon excited (622 nm, QYs ≈ 17%) two-photon (629 nm) prepared by acidifying o-phenylenediamine-based reaction sediments. Systematic analysis reveals that protonation amino groups increases particle surface potential, disperse bulk sediments into nano-scale...

Abstract Folic acid, due to its high affinity toward folate receptors (FR), is recognized as one of the most promising cancer targeting vectors. However, inherent defects low water solubility (1.6 µg mL −1 ), sensitivity photo‐bleaching, fluorescent quantum yields (QYs, <0.5%) seriously limit practical application. Herein, ultrastable, highly luminescent graphene dots (GQDs) that selectively target diverse cells are prepared and tested. The new GQDs present step changes compared common...

Abstract In recent years, multifunctional nanoparticles with combined diagnostic and therapeutic functions show great promise in nanomedicine. this study, we report the environmentally friendly synthesis of fluorescent carbon nano-dots such as quantum dots (CQDs) by microplasma using o -phenylenediamine. The produced CQDs exhibited a wide absorption peaks at 380–500 nm emitted bright yellow fluorescence peak 550 nm. were rapidly taken up HeLa cancer cells. When excited under blue light,...

CH-π interaction-assisted alignment of organic conjugated systems has played an important role to regulate molecular electronic and photophysical properties, whereas harnessing such a smart noncovalent interaction into the tuning unimolecular complex emissive bands covering wide spectral region remains challenging research topic. Since for visible near-infrared properties in single π-functional platform relates its multicolor luminescent behaviors potential superior application analysis,...

DNA strand displacement is widely used in nanotechnology for programming functional circuits. However, many of these systems depend on a single-stranded overhang (toehold). Despite its popularity, eliminating the reliance toehold will advance functionality and practicality Herein we develop toehold-independent (TISD) reaction network logic Instead leveraging enthalpic energy provided by toehold, TISD employs configurational entropy as driving force. The working principle, design framework,...

Surfaces and interfaces play key roles in chemical material science. Understanding physical processes at complex surfaces is a challenging task. Machine learning provides powerful tool to help analyze accelerate simulations. This comprehensive review affords an overview of the applications machine study systems materials. We categorize into following broad categories: solid–solid interface, solid–liquid liquid–liquid surface solid, liquid, three-phase interfaces. High-throughput screening,...

Abstract Cancer‐targeting carbon quantum dots (CQDs) with red‐light absorption/emission featuring inherent biological functionality and deep penetration depth are promising for biomedical applications. However, traditional high‐temperature high‐pressure synthesis processes result in unpredictable functionalities uncontrollable optical properties due to the functional group loss. Here, plasma electrochemical treatment is introduced overcome this issue. The synthesized CQDs work have excellent...

Environmentally friendly synthesis of carbon nanoprticles (C‐NPs) from folic acid (FA) is realized with the assistance microplasma. TEM shows that synthesized FA C‐NPs are amorphous and diameter around 47 nm. The produced exhibit an excitation independent emission 445 nm fluorescence quantum yield 13% at wavelength 370 X‐ray photoelectron spectroscopy (XPS) composed (64.15%), nitrogen (6.04%), oxygen (29.81%). Raman intensity ratio between sp 3 2 hybridizations Carbon 0.35. UV‐Vis...

Nonvolatile memory from carbon nanotube-based field effect transistors (CNTFETs) was investigated in this paper. The CNTFETs were fabricated employing a single-walled nanotube produced by arc-discharge technique, followed the lift-off process. Hysteresis clearly observed curve of drain current versus gate voltage, which makes CNTFET possible for nonvolatile cell. It also found that environmental molecules including water and alcohol evidently affected windows. roles discussed.

Abstract A negative DC high voltage is used to generate plasma at ambient condition. Self‐organized patterns (SOPs) are formed on the surfaces of liquid anodes. With increased current or gap distance reduced gas flow rate, diameters SOPs increase and become more complex, coinciding along with an increases temperature radius a decrease electron density. Both expansion evaporation in terms temperature, lead drop density pattern formation. Our research elucidates correlation between evolution...

Red fluorescence carbon dots (CDs) are promising for diverse applications and have attracted tremendous research interest. However, it is still challenging to achieve red CDs with high quantum yields (QYs > 50%). Herein, three kinds of QYs 53.48, 85.21, 59.18% prepared. Benefiting from the oxidation induced by atmospheric-pressure O

A unsymmetrical photochromic diarylethene, 1-[2-methyl-5-(3,4-difluorophenyl) -3-thienyl]-2- (2-cyano-1,5-dimethyl-4-pyrryl) perfluorocyclopentene (1o), was synthesized, and its optoelectronic properties were also investigated. The results showed that this compound exhibited reversible photochromism changing from colorless to blue after irradiation with UV light both in solution PMMA amorphous film. open-ring isomer of the diarylethene 1 relatively strong fluorescence hexane solution....

Abstract Purpose: The pathogenesis of glioma is not clear, SALL4 a protooncogene and has been shown to promote the growth cells. CircRNAs have play role in development tumors, but relationship between circRNAs well characterized. aim this study establish association circRNAs. Methods: miRNAs related screened before were detected normal brain tissue samples, then hsa_circ_0024183 was selected determine its effect on progression vivo vitro. interaction hsa_circ_0024183, miR-485-5p clarified by...