New initiatives involving the use and implementation of technology are being put into place in many school systems across the country to help students acquire needed 21st century skills (Grady, 2011). The purpose of this study of the implementation of one-to-one devices was to examine school leaders' perceptions of changes in their leadership practices, teachers' instructional practices, and student engagement. A member of the central office staff and five elementary principals were asked to provide perceptions on the implementation process with their staff. School leaders also provided perceptions on how teachers were led to facilitate instruction while using devices. This study consisted of an interview with five elementary principals as well as a member of the central office staff who oversaw implementation. The school leaders' individual interview responses were analyzed and the data, based on their perspectives, were examined. The results of this study indicated that student collaboration, student-centered learning, diverse learning needs of students, and students' familiarity with technology were factors that influence students in a one-to-one device environment. Finding the right digital tool, instructional planning, teacher as facilitator, professional development, and parallel modeling and learning on behalf of the principal to all be important factors to consider for one-to-one device implementation. The results may influence the implementation of one-to-one technology programs for this and other school divisions as well as school leaders. / Ed. D. / The purpose of this study of the implementation of one-to-one devices was to examine school leaders’ perceptions of changes in their leadership practices, teachers’ instructional practices, and student engagement. A member of the central office staff and five elementary principals were asked to provide perceptions on the implementation process with their staff through individual interviews. School leaders also provided proceptions on how teachers were led to facilitate instruction while using technology devices. The school leaders’ individual interview responses were analyzed and the data, based on their perspectives, were examined. The results of this study indicated that student collaboration, student-centered learning, diverse learning needs of students, and students’ familiarity with technology were factors that influence students in a one-to-one device environment. Finding the right digital tool, instructional planning, teacher as facilitator, professional development, and parallel modeling and learning on behalf of the principal to all be important factors to consider for one-to-one device implementation. The results may influence the implementation of one-to-one technology programs for this and other school divisions as well as school leaders.

<p dir="ltr">Molecular materials exhibiting bistability between two states are intriguing candidates for next generation electronic devices. Two similar classes of materials, known as spin crossover (SCO) and valence tautomers (VT) respectively, are of particular interest due to their multifunctional properties, which are controllable via several external parameters, such as temperature, light irradiation, pressure, magnetic field, and electric field. In recent years, considerable research has been dedicated to better understanding the underlying principles that govern the behavior of these materials, so that their implementation into nano-based devices might be achieved.</p><p dir="ltr">In this report, a systematic study of the valence tautomer molecule [Co(sq)(cat)(3-tpp)₂] is presented. In the first chapter, the phenomenon of valence tautomerism (VT) occurring in coordination compounds is introduced and described from the perspective of Crystal Field Theory (CFT). Further, the molecular structure and physical properties of the [Co(sq)(cat)(3-tpp)₂] molecule are explored. The properties of the ferroelectric material Polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP), and the 2-D Mxene Ti₃C₂ are also discussed.</p><p dir="ltr">The next section details equipment development and experimental methods. Thin films of VT molecules were prepared from solution via a drop-casting approach. For thin film analysis, we have developed a custom made, fully automated Vibrating Sample Magnetometer (VSM) with a sensitivity on the order of 1 × 10^-5 emu, as well as a fully automated, variable temperature, under vacuum electron transport stage, and a magneto-optic Kerr effect apparatus (MOKE). Additional experimental methods used to characterize the VT thin films include X-ray Absorption Spectroscopy (XAS), UV-visible Spectrometry (UV-Vis) and Differential Scanning Calorimetry. Experimental results obtained from these techniques are discussed and analyzed in the third section. PVDF-HFP polarization dependent isothermal spin state switching of [Co(sq)(cat)(3-tpp)₂] is also discussed as well as the effects of doping [Co(sq)(cat)(3-tpp)₂] with Ti₃C₂, followed by a conclusion and an outline of future work.</p>