COLL 598-XPS Studies of surface structures with external stimuli



Colloid-in-Liquid Crystal Gels that Respond to Biomolecular Interactions
Agarwal, Ankit; Sidiq, Sumyra; Setia, Shilpa; Büküşoğlu, Emre; de Pablo, Juan Jose; Pal, Santanu Kumar; Abbott, Nicholas L (Wiley, 2013-08-26)
This paper advances the design of stimuli-responsive materials based on colloidal particles dispersed in liquid crystals (LCs). Specifically, thin films of colloid-in-liquid crystal (CLC) gels undergo easily visualized ordering transitions in response to reversible and irreversible (enzymatic) biomolecular interactions occurring at the aqueous interfaces of the gels. In particular, LC ordering transitions can propagate across the entire thickness of the gels. However, confinement of the LC to small domains ...
Colloid-in-liquid crystal gels formed via spinodal decomposition
Büküşoğlu, Emre; de Pablo, Juan Jose; Abbott, Nicholas L (Royal Society of Chemistry (RSC), 2014-01-01)
We report that colloid-in-liquid crystal (CLC) gels can be formed via a two-step process that involves spinodal decomposition of a dispersion of colloidal particles in an isotropic phase of mesogens followed by nucleation of nematic domains within the colloidal network defined by the spinodal process. This pathway contrasts to previously reported routes leading to the formation of CLC gels, which have involved entanglement of defects or exclusion of particles from growing nematic domains. The new route prov...
Colloidal Nanoplatelet/Conducting Polymer Hybrids: Excitonic and Material Properties
Guzelturk, Burak; Menk, Florian; Philipps, Kai; Keleştemur, Yusuf; Olutas, Murat; Zentel, Rudolf; Demir, Hilmi Volkan (2016-02-01)
Here we present the first account of conductive polymer/colloidal nanoplatelet hybrids. For this, we developed DEH-PPV-based polymers with two different anchor groups (sulfide and amine) acting as surfactants for CdSe nanoplatelets, which are atomically flat semiconductor nanocrystals. Hybridization of the polymers with the nanoplatelets in the solution phase was observed to cause strong photoluminescence quenching in both materials. Through steady-state photoluminescence and excitation spectrum measurement...
Colloidal Stabilization of Submicron-Sized Zeolite NaA in Ethanol-Water Mixtures for Nanostructuring into Thin Films and Nanofibers
Gözcü, Oğuz; Kayacı, H. Utkucan; Dou, Yibo; Zhang, Wenjing; Hedin, Niklas; Jasso-Salcedo, Alma B.; Kaiser, Andreas; Çınar, Simge (2023-01-10)
Despite the growing use of organic or mixed solvents in zeolite processing, most studies focus only on aqueous suspension systems. We investigated the colloidal characteristics of submicron-sized zeolite NaA in mixed ethanol-water solvents. The effects of the mixing ratio of solvents and various additives on the dispersion of the zeolite powders were studied. The zeolite NaA particles were destabilized in solvent mixtures at a high ethanol-to-water ratio, a reduction in the zeta potential was observed, and ...
Collecive Security Treaty Organization (CSTO) and the limitations of Russia’s influence over the other CSTO member states
Borkoeva, Janargul; Tanrısever, Oktay Fırat; Department of Eurasian Studies (2011)
This thesis aims to discuss the Collective Security Treaty Organization (CSTO) and the sources of Russia’s influence over its other member-states. It focuses on the origins of the CSTO and the development of security cooperation within the CSTO framework. The thesis argues that although the CSTO continues to be a Russia-centric regional security organization, Russia’s influence over the other CSTO member states has been gradually limited throughout the 2000s due to the increasing diversity in the threat per...
Citation Formats
G. Ertaş, “COLL 598-XPS Studies of surface structures with external stimuli,” ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, pp. 0–0, 2006, Accessed: 00, 2020. [Online]. Available: