Microwave assisted one-step green synthesis of cell-permeable multicolor photoluminescent carbon dots without surface passivation reagents

Development of multicolor carbon nanoparticles for cell imaging

“…5). Similar to the previous report, [19] the fluorescence intensity is relatively stable at physiogical pH for both CNPs, while the fluorescence intensity decreases significantly (by 55-81%) upon changing from a neutral to either an acidic or a basic solution (at pH 3 or 11). The pH-sensitive property of the multicolor CNPs could be explored for tumor imaging.…”

“…Because of these features, various methods for fluorescent CNP synthesis have been reported by using carbon-based materials as carbon resources. [14,19,20] For example, top-down methods include laser ablation of carbon powder [14], electrochemical oxidation [21] and arc discharge [22]; bottom-up methods consist of microwave synthesis, [23,24] combustion soots of candles, [25,26] thermal oxidation of carbon precursor by employing silica or zeolites as carriers [27,28] commercial activated carbon [29], lampblack [30] and watermelon peel as carbon resources [31]. All these methods suffer to some degree from drawbacks like tedious processes, harsh synthetic conditions or expensive starting materials.…”

Fingerprints of short-range and long-range structure in BaZr1−xHfxO3 solid solutions: an experimental and theoretical study

“…MAH method has demonstrated its efficiency in the synthesis of materials with new and/or intensified properties [17][18][19][20][21] . The advantages of this synthesis method are the strong reduction over the time and temperatures even compared with hydrothermal and/or solvothermal conventional methodologies 22,23 .…”

Solution reduction synthesis of amine terminated carbon quantum dots

“…[1][2][3] Compared to conventional organic dyes and semiconductor nanocrystals, CQDs possess 15 several advantages in terms of chemical inertness, easy functionalisation, high resistance to photobleaching, an absence of fluorescence intermittency and the potential for low cost production. As a result, much attention has been paid to their potential application in areas from biological labelling and 20 imaging to fluorescence nanosensors and optoelectronic devices. 2,4,5 As CQDs may be prepared using cheap precursor materials, moderate reaction conditions and relatively simple equipment, numerous synthetic approaches have been reported in the literature, which may be broadly divided into two main 25 categories.…”