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Water-soluble germanium-doped cadmium sulfide quantum dots (Ge:CdS q-dots) were successfully synthesized by a facile one-pot method, and used as fluorescent probes for labeling live MCF-7 cells. The optical properties of the q-dots and several key parameters of the synthesis conditions were studied, and the mechanism of these parameters was also discussed. After doping with germanium, the PL intensity increased 50%, while improving the photostability and fluorescence quantum yield. Furthermore, the toxicity of CdS quantum dot decreased after doping with germanium due to its low toxicity, which greatly improved the CdS quantum dots biocompatibility. Then the doped quantum dots modified with folic acid (FA) to use as fluorescent probes, which expanded the application of semiconductor quantum dots in the biomedical field.

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T1 - One-pot synthesis of gradient interface quaternary ZnCdSSe quantum dots

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Jean-Luc Bredas is a Member of the International Academy of Quantum Molecular Science and the European Academy of Sciences and an Associate Member of the Royal Academy of Belgium. He is the recipient of the 1997 Francqui Prize, the 2000 Quinquennial Prize of the Belgian National Science Foundation, the 2001 Italgas Prize, the 2003 Descartes Prize of the European Union, the 2010 Charles H. Stone Award of the American Chemical Society, and the 2013 David Adler Award in Materials Physics of the American Physical Society. He is a Fellow of the American Chemical Society, American Physical Society, Optical Society of America, Royal Society of Chemistry, and Materials Research Society. He is an Honorary Professor of the Institute of Chemistry of the Chinese Academy of Sciences and holds Honorary degrees from Linköping University, Sweden, and Université Libre de Bruxelles. Since 2008, he serves as Editor for “Chemistry of Materials”, published by the American Chemical Society. Research in the Bredas group focuses on computational materials chemistry: computational methods are used as a tool to uncover the properties of novel advanced materials, understand their chemistry and physics, and derive an integrated understanding of the intrinsic molecular- and nano-scale processes in a variety of emerging applications (such as solar cells or low-power displays), especially in the fields of organic electronics, photonics, and information technology.

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He has focused his research activity during his Ph.D and Post Doc on scanning probe microscopy studies of self-assembled structures. As soon as he started his independent lab he has exploited these tools beyond imaging to gain a quantitative insight into various physico-chemical properties of nanostructures. His research interest has then expanded to the bottom-up development of switchable surfaces and interfaces, to the multiscale study of electronic properties of supramolecularly engineered materials, to graphene chemistry and to the fabrication of supramolecular devices. He has pioneered the realization of optically switchable field-effect transistors which combine photochromic systems with (macro)molecular semiconductors.

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Facile and green synthesis of CdSe quantum dots in …

Prof. Torres′s contributions mainly include the synthesis of unsymmetric phthalocyanines and subphthalocyanines, their conjugation with carbon nanostructures (fullerenes, nanotubes and graphene), supramolecular organization in solution and condensed phases, and applications of these compounds in non-linear optics (NLO), photoinduced electron transfer, molecular photovoltaics (organic solar cells, hybrids and perovskites), and more recently in areas of nanotechnology (organization and synthesis in surfaces) and nanomedicine (photodynamic therapy, PDT, cancer and atherosclerosis, and inactivation of bacteria and viruses). Torres has published more than 500 articles, reviews and patents, and has an h-index of 74, with 14 "highly cited papers" (Thomson Reuters).

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Born in 1933 in Nakhichevan, Azerbaijan Republic, Eldar Salayev graduated from the Azerbaijan State University (AGU) and received his Diploma in Physics in 1956. After having worked as a scientific researcher for about 10 years in the Institute of Physics, Azerbaijan National Academy of Sciences, he received the PhD in Physics and Mathematics, and became the chief of the Semiconductor Quantum Electronics Laboratory and Scientific Secretary at that Institute. Later on, he worked as a Vice-Director at the same Institute.

In 1975, Professor E. Salayev received the degree of Doctor of Science in Physics and Mathematics working in close collaboration with the Nobel Prize winners A. M. Prokhorov and N. G. Basov. The same year he became Professor in physics. In 1972 he founded in Baku the Branch of the Institute of Applied Physics, Ministry of Defence Industry of the former USSR (later on Institute of Photoelectronics Azerbijan National Academy of Sciences). He has been directed this Institute up to 1992.

Professor E. Yu. Salaev is a well-known scientist in the field of physics and tecniques of semiconductors, IR techniques, quantum electronics and nonlinear optics. He is co-author of 2 books, more than 300 scientific papers and holder of 110 patents. His research achievements include: first detection and explanation of nature of the low-temperature and high-pressure phase transitions in layered chalcogenide semiconductors; observation of the presence of the low-frequency rigid layer modes in layered crystals leading to the specific spin-phonon and electron-phonon interaction; new deformation effects in layered gallium selenide-type crystals; formation and behavior of the electron-hole liquid in layered crystals under high-density of excitation; first observation of the second harmonic generation and stimulated emission in gallium selenide and application of this crystal in non-lineer optics, including first observation of the second harmonic generation at 789.5 nm laser wavelength; first observation of the photoinduced change of the refractive index in gallium arsenide which found wide application in optical communication systems; development of the growth technology of the IR materials and creation of the mid-IR detectors.

As a visiting professor, researcher and invited lecturer, E. Salayev has presented many taught seminars and was engaged in scientific collaboration at more than 30 Universities and Research Centers. He supervised 50 PhD students and 15 Doctors of Science. He also serves as a member of the Editorial Board of several scientific journals on materials science and physics.

He has been pursuing the conference leadership to address the frontiers of the physics of semiconductors over the world serving as chair, co-chair, session chair and committee members for over 25 academic conferences.

Professor Salayev has received several awards and honors, including the Azerbaijan State Prize in Science (1972), Honorary Scientific Person of Azerbaijan (1972), Honor Medal of Azerbaijan Republick (1997) and the Vavilov Premium (1982) in the field of the scientific device creation. Salayev also a member of several Academies including the Euoropean Academy of Sciences, the Islamic Academy of Sciences (Iordan), the New York Academy of Sciences (USA), the East International Oil Academy (Azerbaijan), Russian Engineering Academy of Sciences named by A.M. Prokhorov (Russia), International Communication Academy (Ukraine).

He was elected and served as a member of the former USSR Parliament and the Parliament of the Azerbaijan Republick. In 1980 and 1983, respectively, he was elected the Corresponding Member and Full Member of the Azerbaijan National Academy of Sciences. In 1983 Prof. Salayev was elected the President and up to 1997 leaded the Azerbaijan National Academy of Sciences.

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His main research activities can be broadly described as electronic structure of surfaces and materials using the computational methods of Quantum Chemistry of Solid State Physics. In particular, electronic structure of metal clusters and nanoparticles, theory of chemisorption and surface chemistry, molecular mechanisms in heterogeneous catalysis, magnetic coupling in ionic solids and the interpretation of optical, vibrational and photoemission spectra in solids and on surfaces.