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California State University, East Bay

3 ARTICLES PUBLISHED IN JoVE

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Chemistry

An Aptamer-based Sensor for Unchelated Gadolinium(III)
Osafanmwen Edogun 1, Tracy Y. Chan 1, Nghia H. Nguyen 1, Anthony Luu 1, Marlin Halim 1
1Department of Chemistry and Biochemistry, California State University, East Bay

The use of polydeoxynucleotide (44-mer aptamer) molecules for sensing unchelated gadolinium(III) ion in an aqueous solution is described. The presence of the ion is detected via an increase in the fluorescence emission of the sensor.

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Behavior

Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
Alexandre Nikolaev 1, Eve Higby 2,3, JungMoon Hyun 4, Sameer Ashaie 5,6
1Helsinki Collegium for Advanced Studies, University of Helsinki, 2University of California, Riverside, 3California State University, East Bay, 4Hunter College, City University of New York, 5Feinberg School of Medicine, Northwestern University, 6Shirley Ryan AbilityLab

This article describes how to implement a simple lexical decision experiment to assess written word recognition in neurologically healthy participants and in individuals with dementia and cognitive decline. We also provide a detailed description of reaction time analysis using principal components analysis (PCA) and mixed-effects modeling.

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JoVE Journal

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Aleksey A. Kocherzhenko 1, Sapana V. Shedge 2, Pauline F. Germaux 1, Mohammad Heidarian 1, Christine M. Isborn 2
1Department of Chemistry and Biochemistry, California State University, East Bay, 2Department of Chemistry and Chemical Biology, University of California, Merced

Here, we present a protocol for parametrizing a tight-binding excitonic Hamiltonian for calculating optical absorption spectra and optoelectronic properties of molecular materials from first-principles quantum chemical calculations.

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