Cooperation effects of Cu and Mn impurities inducing the formation of hollow shell structured ZnS quantum dots

Hu, Yun; Bao-zhong, HU; Yang, Dingyu; Wei, Zhi-Yuan

doi:10.1080/10667857.2021.1938357

Cited by 1 publication

(2 citation statements)

References 51 publications

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“…Moreover, the hollow-shell structure appeared in Cu,N-CNS/RhB after adding Cu(II). This interesting phenomenon was possibly caused by the carbon-coated Cu, which flowed out through the voids between poly(acrylamides) as dialysis progressed to form a hollow-shell structure . Another possible reason was the higher number of moles of gases liberated in the reactor .…”

Section: Resultsmentioning

confidence: 99%

“…This interesting phenomenon was possibly caused by the carboncoated Cu, which flowed out through the voids between poly(acrylamides) as dialysis progressed to form a hollow-shell structure. 39 Another possible reason was the higher number of moles of gases liberated in the reactor. 40 The internal diameter of the formed cavity structure reaches 57 nm, and the larger space is expected to encapsulate the drugs or other therapeutic reagents better.…”

Section: Resultsmentioning

confidence: 99%

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Ratiometric Fluorescent Detection of Ultrasound-Regulated ATP Release: An Ultrasound-Resistant Cu,N-Doped Carbon Nanosphere

Nan

Liu

Shi

et al. 2023

ACS Appl. Mater. Interfaces

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Focused ultrasound, as a protocol of cancer therapy, might induce extracellular adenosine triphosphate (ATP) release, which could enhance cancer immunotherapy and be monitored as a therapeutic marker. To achieve an ATP-detecting probe resistant to ultrasound irradiation, we constructed a Cu/N-doped carbon nanosphere (CNS), which has two fluorescence (FL) emissions at 438 and 578 nm to detect ultrasound-regulated ATP release. The addition of ATP to Cu/N-doped CNS was conducted to recover the FL intensity at 438 nm, where ATP enhanced the FL intensity probably via intramolecular charge transfer (ICT) primarily and hydrogen-bond-induced emission (HBIE) secondarily. The ratiometric probe was sensitive to detect micro ATP (0.2–0.6 μM) with the limit of detection (LOD) of 0.068 μM. The detection of ultrasound-regulated ATP release by Cu,N-CNS/RhB showed that ATP release was enhanced by the long-pulsed ultrasound irradiation at 1.1 MHz (+37%, p < 0.01) and reduced by the short-pulsed ultrasound irradiation at 5 MHz (−78%, p < 0.001). Moreover, no significant difference in ATP release was detected between the control group and the dual-frequency ultrasound irradiation group (+4%). It is consistent with the results of ATP detection by the ATP-kit. Besides, all-ATP detection was developed to prove that the CNS had ultrasound-resistant properties, which means it could bear the irradiation of focused ultrasound in different patterns and detect all-ATP in real time. In the study, the ultrasound-resistant probe has the advantages of simple preparation, high specificity, low limit of detection, good biocompatibility, and cell imaging ability. It has great potential to act as a multifunctional ultrasound theranostic agent for simultaneous ultrasound therapy, ATP detection, and monitoring.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%