Researcher:
Öztürk, Sinan S.

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Master Student

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Sinan S.

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Öztürk

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Öztürk, Sinan S.
Öztürk, Süleyman Sinan

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2005 - 20104

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Researcher Of Publications: search.filters.isAuthorOfPublication.c8bbb930-8f7c-48ed-80b5-3e9c4213a0b8

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Now showing 1 - 4 of 4
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    Crystal structures of strontium octabarium hexakis(dinitridoborate) and europium octabarium hexakis(dinitridoborate), M Ba8[BN 2]6 (M = Sr, Eu)
    (Walter de Gruyter GmbH, 2005) N/A; N/A; Department of Chemistry; Department of Chemistry; Öztürk, Sinan S.; Kokal, İlkin; Somer, Mehmet Suat; Master Student; Master Student; Faculty Member; Department of Chemistry; Graduate School of Sciences and Engineering; College of Sciences; College of Sciences; N/A; N/A; 178882
    B6Ba8N12Sr, cubic, In3̄m (no. 229), a = 7.913(1) Å, V = 495.6 Å3, Z = 1, Rgt(F) = 0.031, wRref(F2) = 0.098, T = 293 K. B6Ba 8EuN12, cubic, Im3̄m (no. 229), a = 7.839(1) Å, V = 481.8 Å3, Z = 1, Rgt(F) = 0.014, wR ref(F2) = 0.056, T = 293 K.
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    Development of color tunable aqueous cds-cysteine quantum dots with improved efficiency and investigation of cytotoxicity
    (Amer Scientific Publishers, 2010) N/A; N/A; Department of Chemistry; Department of Chemistry; Öztürk, Sinan S.; Selçukbiricik, Fatih; Acar, Havva Funda Yağcı; Master Student; N/A; Faculty Member; Department of Chemistry; Graduate School of Sciences and Engineering; College of Sciences; College of Sciences; N/A; N/A; 178902
    Cysteine capped aqueous CdS quantum dots with improved luminescence and excellent colloidal-luminescence stability were developed in a simple one pot aqueous method from safer precursors at low temperatures. Investigation of size and luminescence as a function of cysteine amount, pH and temperature revealed an optimum value for all these variables to maximize the quantum yield. Cysteine:Cd ratio of 2, reaction pH of 9.5 and synthesis at room temperature-30 degrees C emerged as the best conditions for the highest QY of 19%. Yet, QY can be improved up to 55% if QDs are cleaned from excess cysteine and ions and redispersed in pH 7 medium. Size of the QDs, therefore the color of luminescence, can be tuned by the reaction temperature in this simple process. Higher temperatures provide larger particles. Cell uptake and cell viability studies in a wide range of doses and different incubation times with MCF-7 and HeLa cell lines revealed cell dependent differences. MCF-7 cells uptake more ODs but are much more viable than HeLa cells. At low doses such as 0.025 mg QD/ml all cells are viable. At 24 h incubation times MCF-7 cells demonstrate viability above 75% up to 0.15 mg QD/ml. On the other hand HeLa cells loose viability with increasing dose.
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    Crystal structures of strontium octabarium hexakis(dinitridoborate) and europium octabarium hexakis(dinitridoborate), M Ba8[BN2]6 (M = Sr, Eu)
    (Walter de Gruyter GmbH, 2005) N/A; N/A; Department of Chemistry; Department of Chemistry; Öztürk, Sinan S.; Kokal, İlkin; Somer, Mehmet Suat; Master Student; Master Student; Faculty Member; Department of Chemistry; Graduate School of Sciences and Engineering; College of Sciences; College of Sciences; N/A; N/A; 178882
    B6Ba8N12Sr, cubic, Im3m (no. 229), a = 7.913(1) Å, V = 495.6 Å3, Z = 1, Rgt(F) = 0.031, wRref(F2) = 0.098, T = 293 K. B6Ba8EuN12, cubic, Im3m (no. 229), a = 7.839(1) Å, V = 481.8 Å3, Z = 1, Rgt(F) = 0.014, wRref(F2) = 0.056, 7=293 K.
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    Crystal structure of tetrapotassium diarsenidozincate, K(4)ZnAS(2)
    (Oldenbourg Verlag, 2007) Prots, Yurii; Aydemir, Umut; N/A; Department of Chemistry; Öztürk, Sinan S.; Somer, Mehmet Suat; Master Student; Faculty Member; Department of Chemistry; Graduate School of Sciences and Engineering; College of Sciences; N/A; 178882
    K(4)ZnAS(2), trigonal, R (3) over barm (no. 166), a = 5.7529(6) angstrom c = 26.866(4) angstrom, V = 770.2 angstrom(3), Z = 3, R-gt(F) = 0.040, wR(ref)(F-2) = 0.092, T = 293 K.