scholarly journals A facile and green approach to prepare carbon dots with pH-dependent fluorescence for patterning and bioimaging

RSC Advances ◽  
2018 ◽  
Vol 8 (66) ◽  
pp. 38091-38099 ◽  
Author(s):  
Xin Guo ◽  
Yufu Zhu ◽  
Lei Zhou ◽  
Linna Zhang ◽  
Yucai You ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fruit Juices ◽  
Ph Sensing ◽  
Green Approach ◽  
Ph Dependent

Carbon dots prepared with the adoption of ubiquitous natural fruit juices as precursors have good applications in pH sensing, patterning and bioimaging.

Solvent-controlled and solvent-dependent strategies for the synthesis of multicolor carbon dots for pH sensing and cell imaging

2019 ◽  
Vol 7 (31) ◽  
pp. 9709-9718 ◽  
Author(s):  
Jianliang Bai ◽  
Yusha Ma ◽  
Guojun Yuan ◽  
Xu Chen ◽  
Jing Mei ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Cell Imaging ◽  
Ph Sensing ◽  
Ph Dependent

Solvent-controlled, pH-dependent and solvent-dependent strategies are proposed to obtain multicolor carbon dots using the same precursor.

Facile synthesis of orange fluorescence carbon dots with excitation independent emission for pH sensing and cellular imaging

2018 ◽  
Vol 1042 ◽  
pp. 125-132 ◽  
Author(s):  
Yuan Jiao ◽  
Xiaojuan Gong ◽  
Hui Han ◽  
Yifang Gao ◽  
Wenjing Lu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Cellular Imaging ◽  
Ph Sensing ◽  
Facile Synthesis ◽  
Orange Fluorescence

scholarly journals Mechanistic Basis of pH-Dependent 5-Flucytosine Resistance inAspergillus fumigatus

2018 ◽  
Vol 62 (6) ◽  
Author(s):  
Fabio Gsaller ◽  
Takanori Furukawa ◽  
Paul D. Carr ◽  
Bharat Rash ◽  
Christoph Jöchl ◽  
...  
Keyword(s):  
Aspergillus Fumigatus ◽  
Fungal Pathogens ◽  
Regulatory Protein ◽  
Transcriptional Regulators ◽  
Primary Factor ◽  
Ph Sensing ◽  
Content Type ◽  
Ph Dependent ◽  
Mechanistic Basis

ABSTRACTThe antifungal drug 5-flucytosine (5FC), a derivative of the nucleobase cytosine, is licensed for the treatment of fungal diseases; however, it is rarely used as a monotherapeutic to treatAspergillusinfection. Despite being potent against other fungal pathogens, 5FC has limited activity againstAspergillus fumigatuswhen standardin vitroassays are used to determine susceptibility. However, in modifiedin vitroassays where the pH is set to pH 5, the activity of 5FC increases significantly. Here we provide evidence thatfcyB, a gene that encodes a purine-cytosine permease orthologous to known 5FC importers, is downregulated at pH 7 and is the primary factor responsible for the low efficacy of 5FC at pH 7. We also uncover two transcriptional regulators that are responsible for the repression offcyBand, consequently, mediators of 5FC resistance, the CCAAT binding complex (CBC) and the pH regulatory protein PacC. We propose that the activity of 5FC might be enhanced by the perturbation of factors that repressfcyBexpression, such as PacC or other components of the pH-sensing machinery.

scholarly journals Green and facile synthesis of water-soluble carbon dots from ethanolic shallot extract for chromium ion sensing in milk, fruit juices, and wastewater samples

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 20638-20645 ◽  
Author(s):  
Chinawooth Sakaew ◽  
Phitchan Sricharoen ◽  
Nunticha Limchoowong ◽  
Prawit Nuengmatcha ◽  
Chunyapuk Kukusamude ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fruit Juices ◽  
Water Soluble ◽  
Total Phenolic ◽  
Facile Synthesis ◽  
Chromium Ion ◽  
Ion Sensing ◽  
Wastewater Samples ◽  
Soluble Carbon

Self-functionalized carbon dots (CDs) were prepared from ethanolic shallot extract to obtain a total phenolic precursor.

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