Chemistry / Kimya

Permanent URI for this collectionhttps://hdl.handle.net/11147/4072

Browse

Filters

2010 - 20172

Settings

Publisher: search.filters.publisher.Elsevier Ltd.Subject: search.filters.subject.Carbon nanotubes

Search Results

Now showing 1 - 2 of 2
  • Article
    Citation - WoS: 10
    Citation - Scopus: 12
    Tuning Pendant Groups of Polythiophene on Carbon Nanotubes for Vapour Classification
    (Elsevier Ltd., 2017) Tu, Meng-Che; Yıldız, Ümit Hakan; Thilini, Alahakoon; Wallace, Lim Tse Loong; Moochhala, Shabbir; Yıldız, Ümit Hakan; Palaniappan, Al.; Liedberg, Bo; 04.01. Department of Chemistry; 04. Faculty of Science; 01. Izmir Institute of Technology
    Poly(3-alkoxythiophene) (PT) with varying ratios of triethylamine and 1-methyl imidazole pendant groups and horizontally aligned single walled carbon nanotubes (SWCNT) are utilized in this study for volatile organic compounds (VOCs) classification. PTs with five different ratios of pendant groups are incorporated with SWCNT and are evaluated as chemiresistor arrays for analysis of VOCs such as ethanol, acetone, toluene, chloroform, isoprene and ethylene. Varying PT pendant groups yielded differential SWCNT current responses attributed to their chemical affinities for the VOCs tested. Principal component analysis (PCA) for vapour classification illustrated that the vapour responses are separable, thus, highlighting vapour discrimination ability of SWCNT with controlled ratios of PT pendant groups. The proposed methodology is a facile VOC classification approach for two main reasons; (i) PT could easily modified with various pendants groups containing appropriate chemical moieties for preferential interaction with various VOCs and (ii) increasing the number PTs with appropriate pendant group modifications would provide additional inputs to PCA thereby enabling capturing and assaying of a wide range of VOCs.
  • Article
    Citation - WoS: 31
    Citation - Scopus: 35
    Electrochemical Investigation of Biomolecular Interactions Between Platinum Derivatives and Dna by Carbon Nanotubes Modified Sensors
    (Elsevier Ltd., 2010) Yapaşan, Ece; Çalışkan, Ayfer; Karadeniz, Hakan; Erdem, Arzum; 01. Izmir Institute of Technology
    The biomolecular interactions of platinum derivatives widely used as anticancer drugs: cis-diamminedichloroplatinum(II) and oxaliplatin with calf thymus double-stranded DNA were studied using differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) in combination with single-walled carbon nanotubes modified graphite electrode (SWCNTs-GE) and unmodified graphite electrode (bare GE). The performance of these biomolecular interactions were explored at the electrode surface by monitoring the changes at guanine oxidation signal in terms of optimum interaction times by comparing the results of SWCNTs-GE with bare one. The features of these electrochemical sensors based on carbon nanotubes for monitoring of biomolecular interactions were discussed and compared with the earlier conventional ones. © 2009 Elsevier B.V. All rights reserved.