Fabricating MoS QDs using porous metal-organic frameworks (MOFs) as templates remains a great challenge, because the MOF structure is prone to collapse during solvothermal reactions, resulting in a loss of the function of the template. In the present work, the production of homogeneous photoluminescent MoS QDs was achieved by using the structurally stable MOF MIL-101 as limited nanoreactors. The process developed opens up a new route for fabricating other photoluminescent QDs and their derived nanomaterials.
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http://dx.doi.org/10.1039/d2cc04890f | DOI Listing |
ACS Sens
January 2025
School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics, Optics Valley Laboratory, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
Mastering the surface chemistry of quantum dots (QDs) has enabled a remarkable gas-sensing response as well as impressive air stability. To overcome the intrinsic receptor-transducer mismatch of QDs, PbS QDs used as sensitive NO receptors are spin-coated on top of a few-layer MoS and incorporated into a thin-film transistor (TFT) gas sensor. This architecture enables the separation of the electron transduction function from the chemical reception function.
View Article and Find Full Text PDFNanotechnology
December 2024
School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
Molybdenum disulfide (MoS) possesses excellent potential for applications in the field of optoelectronic detection. However, the atomic-level thickness of the monolayer MoSleads to weak light absorption and a restricted absorption spectrum. The performance of monolayer MoSdevices has reached a bottleneck.
View Article and Find Full Text PDFSmall
November 2024
Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, P. R. China.
To expand the detection capabilities of silicon (Si)-based photodetector and address key scientific challenges such as low light absorption efficiency and short carrier lifetime in Si-based graphene photodetector. This work introduces a novel Si-based Schottky coupled structure by in situ growth of 3D-graphene and molybdenum disulfide quantum dots (MoS QDs) on Si substrates using chemical vapor deposition (CVD) and plasma-enhanced chemical vapor deposition (PECVD) techniques. The findings validate the "dual-enhanced absorption" effect, enhancing the understanding of the mechanisms that improve optoelectronic performance.
View Article and Find Full Text PDFTalanta
February 2025
Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China. Electronic address:
Herein, a dual-mode fluorometric and colorimetric biosensor for Pax-5a gene was developed based on zinc-doped molybdenum disulfide quantum dots (Zn-MoS QDs) by coupling exonuclease-assisted recycling amplification and peroxidase-mimic DNAzyme. In the presence of Pax-5a gene, the exonuclease III can cleave the duplexes formed by Pax-5a gene and the hairpin DNA (HP), releasing the output DNA (oDNA). G-rich DNA and magnetic beads (MBs) labeled with capture DNA (cDNA) can hybridize with oDNA to form the MBs-cDNA/oDNA/G-rich DNA sandwich complex.
View Article and Find Full Text PDFTalanta
February 2025
Laboratory of Biomaterials and Translational Medicine, Center for Nanomedicine and Department of Gynecology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China; Guangdong Provincial Key Laboratory of Liver Disease Research, Sun Yat-sen University, Guangzhou, 510630, China. Electronic address:
Diseases caused by viruses, such as monkeypox virus (MPXV) and human papillomavirus (HPV), pose serious threats to human health and safety. Although numerous strategies have been constructed for detecting MPXV and HPV DNA, most methods require either laborious procedures or complicated instruments involving skilled professionals. In this research, a CRISPR-Cas12a-mediated colorimetric detection platform for MPXV and HPV sensing was constructed for the first time by applying probe DNA to reprogram the catalytic properties of molybdenum disulfide quantum dots (MoS QDs).
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