Preparations of CdTe quantum platelets, magic-size (CdTe) nanoclusters, and CdTe quantum wires are described using (MeN)PTe (with (MeN)P) as a Te precursor. The (MeN)PTe/(MeN)P precursor mixture is shown to be more reactive than mixtures of trialkylphosphine tellurides and the corresponding trialkylphosphines, RPTe/RP, which are commonly employed in nanocrystal syntheses. For syntheses conducted in primary amine solvents, (MeN)PTe and (MeN)P undergo a transamination reaction, affording (MeN) (RHN)PTe and (MeN) (RHN)P (R = n-octyl or oleyl). The transaminated (MeN) (RHN)PTe derivatives are shown to be the likely Te precursors under those conditions. The enhanced reactivities of the tris(amino)phosphine tellurides are ascribed to increased nucleophilicity due to the amino-N lone pairs.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsnano.8b06468 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Construction of colorimetric-fluorescent dual-signal aptamer-based assay using COF-Au nanozyme and magnetic nanoparticle-based CdTe quantum dots for sensitive zearalenone determination.
Mikrochim Acta
December 2024
State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, 214122, China.
A dual-signal aptamer-based assay utilizing colorimetric and fluorescence techniques was developed for the determination of zearalenone (ZEN). The CdTe quantum dots, serving as the fluorescent signal source, were surface-modified onto FeO@SiO and subsequently functionalized with the aptamer. The COF-Au was modified with complementary chain, which possessed peroxide (POD)-like enzyme properties, and could catalyze the peroxidation of 3,3',5,5'-tetramethylbenzidine (TMB) to ox TMB, resulting in the generation of colorimetric signals.
View Article and Find Full Text PDFVisual and fluorescence dual mode platform for sensitive and accurate screening of breast carcinoma.
Biosens Bioelectron
December 2024
TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan·University of Chinese Medicine, Changsha, China. Electronic address:
Compared to single-mode detection, dual-mode sensing strategies have garnered increasing attention from researchers due to their superior detection accuracy and reliability. Exosomes, as non-invasive biomarkers, hold significant potential for disease diagnosis. However, sensitive and precise detection of exosomes still presents considerable technical challenges.
View Article and Find Full Text PDFCarrier Recirculation Induced Ultrasensitive Photodetectors of InSe/CdTe Heterostructure Featuring an Interfacial Holes Layer.
Small
December 2024
State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, No.500 Yutian Road, Shanghai, 200083, P. R. China.
Photodetectors (PDs) based on mix-dimensional heterojunctions (MDHJs) built from 2D layered materials and covalent-bonded semiconductors show the prospect of compensating the intrinsic weakness of 2D materials to realize their full potential. However, there is an open issue to improve the temporal response of PDs while maintaining high gain and sensitivity. Herein, photoconductive type MDHJs PDs with 2D InSe and covalent-bonded CdTe thin film are designed and fabricated in which InSe is the active layer and CdTe is the medium gain one.
View Article and Find Full Text PDFGain Saturation of Encapsulated CdTe-Ag Quantum Dot Composite in SiO.
Nanomaterials (Basel)
December 2024
Department of Optics & Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea.
Amplified spontaneous emission of CdTe and CdTe-Ag quantum dot composites were compared for increasing the optical stripe length, whereby optical gain coefficients for various emission wavelengths were obtained. In the case of CdTe-Ag nanoparticle composites, we observed that plasmonic coupling causes both optical enhancement and quenching at different wavelengths, where the amplified spontaneous emission intensity becomes enhanced at short wavelengths but suppressed at long wavelengths (>600 nm). To analyze the logistic stripe length dependence of amplified spontaneous emission intensity, we used a differential method to obtain the gain coefficient beyond the amplification range.
View Article and Find Full Text PDFA Monte Carlo method to assess the spectral performance of photon counting detectors.
Med Phys
December 2024
Siemens Healthineers, Forchheim, Germany.
Background: Assessing the performance of spectral detectors is an important but nontrivial problem. In the past few years, detective quantum efficiency-(DQE)-like quantities have been proposed that allow quantifying the spatial-spectral performance for certain tasks. In previous publications, we have presented and validated an approach to determine detector properties like the modulation transfer function (MTF), the noise power spectrum (NPS), and the DQE based on an end-to-end Monte Carlo model of the detection process.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!