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Nafiujjaman, Md,Kim, Jeongho,Park, Hun-Kuk,Lee, Yong-Kyu Elsevier 2018 Journal of industrial and engineering chemistry Vol.57 No.-
<P><B>Abstract</B></P> <P>We synthesized and characterized blue-color-emitting graphene quantum dots (BGQDs) which is better than that of other GQDs synthesized from organic molecules. We investigated the biocompatibility of BGQDs with cells and erythrocytes. Evaluation of epithelial carcinoma cancer cells indicated that most cells successfully took up BGQDs and toxicity testing showed no effect on cell viability. We also examined alterations in deformability and aggregation of human erythrocytes exposed to BGQDs at different concentrations and incubation times. These results suggest that BGQDs are biocompatible and do not cause cell membrane damage, and thus, are promising nanomaterials for various medical diagnoses and treatments.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Blue-color emitting graphene quantum dots (BGQDs) were synthesized by pyrolyzing <SMALL>L</SMALL>-glutamic acid and characterized. </LI> <LI> BGQDs exhibited strong blue photoluminescence with high quantum yield of approximately 24% and were not cytotoxic to the cells <I>in vitro</I> at 1000μg/mL. </LI> <LI> Biodistribution of BGQDs in mice showed high fluorescence intensity at tumor sites after 6h. </LI> <LI> The changes in deformability and aggregation of erythrocytes were insignificant at a concentration of up to 750μg/mL. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Nafiujjaman, Md,Revuri, Vishnu,Nurunnabi, Md,Jae Cho, Kwang,Lee, Yong-kyu The Royal Society of Chemistry 2015 Chemical communications Vol.51 No.26
<P>In this study, photosensitizer conjugated iron oxide nanoparticles were strategically designed and prepared for simultaneous PDT and dual-mode fluorescence/MR imaging. The MRI contrast agent Fe<SUB>3</SUB>O<SUB>4</SUB> was modified by APTES to functionalize the surface and further to link with heparin–pheophorbide-A conjugates.</P> <P>Graphic Abstract</P><P>A hybrid nanoparticle composed of a photodynamic agent pheophorbide A linked with Fe<SUB>3</SUB>O<SUB>4</SUB> through heparin and APTES for MR imaging and phototherapy. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cc10444g'> </P>
Md Nafiujjaman,김정호,박헌국,이용규 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
We synthesized and characterized blue-color-emitting graphene quantum dots (BGQDs) which is betterthan that of other GQDs synthesized from organic molecules. We investigated the biocompatibility ofBGQDs with cells and erythrocytes. Evaluation of epithelial carcinoma cancer cells indicated that mostcells successfully took up BGQDs and toxicity testing showed no effect on cell viability. We also examinedalterations in deformability and aggregation of human erythrocytes exposed to BGQDs at differentconcentrations and incubation times. These results suggest that BGQDs are biocompatible and do notcause cell membrane damage, and thus, are promising nanomaterials for various medical diagnoses andtreatments.
Nurunnabi, Md,Nafiujjaman, Md,Lee, Sang-Joon,Park, In-Kyu,Huh, Kang Moo,Lee, Yong-kyu unknown 2016 Chemical communications Vol. No.
<P>A facile and convenient process was optimized for preparing water-soluble hydroxyl-functionalized hexagonal boron nitride (hBN-OH) from hBN. The hBN-OH (2-3 nm thickness) contains similar to 40% oxygen and exhibits blue emission with a quantum yield of approximately 36%. The hBN-OH could be used for imaging cells and for the in vitro detection of biomolecules through electrochemical analysis.</P>