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Synthesis of redox-responsive tetrathiafulvalene derivatives with amphiphilic properties to be used in soft materials
(University of the Free State, 2024) Tshehla, Paulos Katlego; Azov, V. A.
The well-known electron-rich donor system, Tetrathiafulvalene (TTF) has gained excessive interest in the field of supramolecular chemistry and complex ligand research. Continuous advancements in synthesis has allowed TTF along with its derivatives to be integrated into various intricate molecular systems. Such that, these systems have been investigated for their potential applications as sensors, models for electron transfer, molecular machines and many other applications. The study displayed in this piece of writing will examine the incorporation of TTF moieties through preparation by synthesis, as well as their characterisation. With the motive to add to the recent and existing synthetic advances, for utilization in constructing versatile systems of broad applications.
A series of functionalised bis- and tetra-tetrathiafulvalene derivatives has been prepared. A result stemming from a series of synthesis producing TTF intermediates, later used as key precursors for the successful synthesis of TTF derivatives. Amongst those, is the TTF thiolate anion used as a key intermediate which has shown to be quite a versatile reagent for this purpose. Shelf-stable precursors of the TTF thiolate anion have been prepared, making the preparation of novel, highly functionalised, amphiphilic cationic / anionic TTF derivatives 4 and 5 feasible. The series of steps include various reactions: cyclization, cross coupling and self-coupling, de-protection, re-alkylation, and nucleophilic substitution reactions. This synthetic pathway allows the tailoring of the properties of the TTF entity by the variation of the substitution pattern. For feasibility of the amphiphilic character, the analogues prepared constitute of long alkyl chains at different positions. This character adds in rendering these entities as versatile electron donor systems, well suited for use in construction of novel redox assemblies.
Through careful adjustments and development of methodologies, a range of symmetrical and unsymmetrical TTF derivatives of different substituents was covered. From alkyl-halides bearing TTF derivatives to the 1-methyl-imidazole units fused to the TTF frameworks. Certain compounds were obtained in significantly high yields. Such as the 1-methyl-imidazole bearing TTF derivative, 4,5-bis(1-methylimidazole-3-propylthio)-6,7-bis(propylthio)tetrathiafulvalene 4a at a yield of 94%. With its identity qualitatively confirmed by high-resolution mass spectroscopy and NMR analysis.
In the study, several purification techniques were implemented with the hopes of producing highly pure and well isolated compounds. Some of the reactions produced several products which were difficult to separate. An attempt to conduct electrochemical studies on the new multi-TTF derivatives, was deemed unsuccessful for various reasons covered in the discussion.
The impact of structures and processes on intergovernmental processes in the Sol Plaatje Municipality
(University of the Free State, 2020) Ntsenge, Buhle; Coetzee, T.
When the Constitution of the Republic of South Africa, 1996 (Act 108 of 1996) came into operation on 4 of February 1997, it represented the historical culmination of a focused process of constitution-writing which commenced in December 1991. This process came as a result of the initiation of the Convention for a Democratic South Africa (CODESA), a national multi-party constellation established to negotiate a transition to inclusive democracy (Venter, 2014: 2).
Groups or individuals cannot exist without regulations or laws. Even when these laws are put in place, there is a need to implement and govern them, hence the need for a body or structure that will oversee the adherence to these rules and regulations: a constitution. This constitution is the supreme law of the Republic; law or conduct inconsistent with it is invalid, and the obligations imposed by it must be fulfilled (Ngcukaitobi, Brickhill, & Stein, 2012: 319). Chapter 3 of the Constitution of South Africa sets out the principles of Cooperative Governance; all spheres must observe and adhere to the principles in this chapter and must conduct their activities within the parameters that the chapter provides (Mhone & Edigheji, 2003: 156).
Intergovernmental Relations begin to have importance where there is a separation of powers amongst different spheres of government (Ismail, Bayat & Meyer, 1997: 138). South Africa has three spheres of government, namely national, provincial, and local (municipal). National government is then divided into three branches: law-making (legislative authority), the actual operations of governing (executive authority), and the courts (judicial authority). All these structures of government are interdependent and need each other to function and to operate effectively. This practice is known as Intergovernmental Relations. Intergovernmental Relations (IGR) is defined as the processes and institutions through which governments within a political system interact (Phillimore, 2013: 229). These institutions function as interacting networks of institutions at all levels; they are created to enable the various parts of government to form a unified whole, with cooperative governance playing a larger role as it derives mandate from the constituency at regional levels (Phillimore, 2013: 229).
Ismail et al (1997: 139) asserts that cooperative governance is a new idea to resolve issues associated with Intergovernmental Relations seeking to address the difficulties pertaining to the coordination of government functions and streamlining of government’s administrative responsibilities (Ismail et al., 1997: 139). The value of Intergovernmental Relations in South Africa is evident with the integration of local government and traditional affairs as the defining element of cooperative governance. cooperative governance alludes to all types of government that adopt political flexibility, negotiation, compromise, and less reliance on the rigid distribution of powers between the three spheres of government (Tau, 2015: 801). The powers and authority of local government with its mandate to regulate its own laws and matters pertaining to its jurisdiction is recognised by the Constitution in South Africa. Section 151 (4) of the South African Constitution states that national and / or provincial government spheres may not compromise or prevent the functions of local government (Ismail et al., 1997: 139).
𝗥𝗘𝗙𝗘𝗥 𝗧𝗢 𝗧𝗛𝗘 𝗔𝗧𝗧𝗔𝗖𝗛𝗘𝗗 𝗗𝗢𝗖𝗨𝗠𝗘𝗡𝗧 𝗙𝗢𝗥 𝗔 𝗙𝗨𝗟𝗟 𝗦𝗨𝗠𝗠𝗔𝗥𝗬!
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The impact of the awarding of state tenders and quotations on black economic empowerment in the Free State Province in the 2000-2006 financial years
(University of the Free State, 2008) Mohokare, Sesheme Meshack; Bekker, J. C. O.
The first democratic government of South Africa that was inaugurated into office in 1994, inherited a society that was divided between the haves and the have nots. The haves were mainly whites who benefited economically under the National Party led government. The have nots were mainly blacks who were in the majority. The blacks were not allowed to participate in the economy of South Africa. The task that faces the new democratic government is to redress the wrong-doings of the past. The democratic government is faced with the challenge of improving the lives of the blacks politically, economically and socially. The democratic government did not hesitate to make its intentions clear of redressing the imbalances of the past. The votes of the electorate who voted the new government into office, were interpreted by the politicians as a mandate to redress the wrongs committed by the National Party government. The government engaged in rigorous policy making processes and new policies were passed in both the national and provincial governments.
The government is faced with a number of challenges. When the current government took over, the number of blacks participating in the economy was very small. The current government is faced with the challenge of increasing the number of blacks participating in the mainstream economy of the country. In order to bring in more blacks into the mainstream economy, the state had to channel state tenders to blacks. The debate that is going on is on the successes and the failures of the government both national, provincial and local in bringing blacks into the mainstream economy through the channeling of state tenders. Much has been said about factors that have had a negative and positive impact on black economic empowerment.
This dissertation is a study of the impact of tenders awarded to blacks by the Free State Provincial Government on black economic empowerment. The focus in the dissertation will be on whether the Free State Government is actually succeeding in empowering the blacks economically.
In this rubric, the following will be outlined: Background and reasons for the study, problem statement, hypothesis formulation, objective of the research, research methodology, key words and concepts and the scope of the dissertation.
Synthesis, electrochemistry, and density functional theory of osmium(II) containing different 2,2′:6′,2″-terpyridines
(MDPI, 2024) Mateyise, Nandisiwe G. S.; Conradie, Marrigje M.; Conradie, Jeanet
In coordination chemistry, 2,2′:6′,2″-terpyridine is a versatile and extensively studied tridentate ligand. Terpyridine forms stable complexes with a variety of metal ions through coordination sites provided by the three nitrogen atoms in its pyridine rings. This paper presents an electrochemical study on various bis(terpyridine)osmium(II) complexes, addressing the absence of a systematic investigation into their redox behavior. Additionally, a computational chemistry analysis was conducted on these complexes, as well as on eight previously studied osmium(II)-bipyridine and -phenanthroline complexes, to expand both the experimental and theoretical understanding. The experimental redox potentials, Hammett constants, and DFT-calculated energies show linear correlations due to the electron-donating or electron-withdrawing nature of the substituents, as described by the Hammett constants. These substituent effects cause shifts to lower or higher redox potentials, respectively.
Performance management within the inspectorate division of the department of public works in Bloemfontein
(University of the Free State, 2023) Mathibe, Refiloe; Markham, Lyle
The purpose of this study is to highlight several reasons why performance management is important. Performance management provides the opportunity to create training opportunities, developmental strategies, and clarity within the organisation for both the employer and the employees. It encourages productivity by increasing confidence and open communication channels as a result, increasing employee retention through rewards and recognition.
The research design that was followed for this study was that of a qualitative nature through the use of semi-structured interviews. The researcher utilized qualitative data collection to collect the data which was then used to compile the study by analysing the collected data.
The key findings of the study were as follows:
▪ The work attendance had a negative impact on the participants in general as it affected their performance negatively. This resulted in slow progress in achieving team goals, which had a negative impact on the overall performance of the organisation.
▪ To boost productivity, three components must be considered, namely instrumentality, expectancy, and valence. Instrumentality is dependent upon the trustworthiness of the employee, the expectation is dependent on whether the employee has the skills for the job they are performing, and valence reinforces the values of rewards and consistency with reaching goals, needs, preferences, and values. If all three components are considered and achieved, the employees will be motivated to perform.
▪ The impact of having mentors and mentorship programmes is vital for retaining talent, aligning the goals of the employees with those of the organisation and enhancing career development. Mentorship in the engineering and built environments will enable people to register as professionals in their fields.
▪ Organisations gain productivity from working from home and the fifty percent work life, an enabler to this is technology and digitalisation. It is, therefore, beneficial for the Free State Department of Public Works to introduce digitalisation to the workplace and provide all the required resources so that the productivity and performance of individuals can increase.
The main conclusions of the study indicated that the performance management review of the department could be effective if it was used properly. Instead, the participants highlighted that it was used to obtain cash bonuses. The participants did not feel motivated because there were gaps due to lack of communication about the reviews and they also mentioned the unwillingness of managers to ensure that they receive the support they require to improve themselves. It could, therefore, be concluded that management should get leadership training that would assist them in leading the teams effectively. The work attendance had a negative impact on the participants in general; digitalisation could assist in this regard, as would the provision of resources to enable the employees to do their daily tasks.
Towards formulating a management model to enhance inclusivity at a teacher training college in Zimbabwe
(University of the Free State, 2024) Ncube, Nozinhle; Dube, B.; Chimbi, G.
The aim of this study was to formulate a management model to enhance inclusive education at a teacher training college in Zimbabwe. Throughout the world student teachers with disabilities face many barriers in teachers’ training colleges and other higher education institutions. People with disabilities constitute some of the poorest economically and are socially excluded and marginalized. In Zimbabwe, people with disabilities constitute about 7% of the population, yet they make up 20% of the poorest people at the national level. The purpose of this study was to explore the barriers to academic and social inclusion faced by students with disabilities at a teacher training college in Zimbabwe. The objectives were to determine the challenges faced by student teachers with disabilities at tertiary institutions, explore policies on students with disabilities at tertiary institutions and suggest possible strategies that could be adopted to overcome these challenges.
The study is located in critical emancipatory research (CER) and adopted the transformative paradigm. Qualitative research methods, specifically participatory action research (PAR), were employed. The study used purposive sampling which is synonymous with qualitative research. The target population comprised all students with disabilities at a teacher’s training college in Zimbabwe. Research instruments were triangulated by using interviews and focus group discussions. Qualitative data analysis was done through the thematic analysis of responses from both lecturers and students.
The study revealed that there was no inclusive education policy at national level as well as in teachers’ training colleges in Zimbabwe, only circulars were in place. The study also found that students with disabilities had some barriers on physical access to different places at the college under study. The study also established that staff’s lack of competencies was one of the major barriers that hindered the implementation of inclusive education in teacher training colleges in Zimbabwe. There was no effective inclusive policy in teacher training colleges that could promote the implementation of inclusive practices. Stigma and discrimination among students and staff regarding students with disabilities was also prevalent. The rigid curriculum was another major barrier against the implementation of inclusive education in teacher training colleges in Zimbabwe. The study also revealed that there was a lack of funding to purchase equipment and assistive devices for students with disabilities.
The study recommended that the inclusive management model should consider easy accessibility to all places that are currently inaccessible to students with disabilities. The other recommendation was that staff members ought to be trained on inclusive education through workshops and staff development programmes. There is a need to review syllabi in order to accommodate students with disabilities, especially in practical subjects. The study also recommended that there was need to have a working policy for inclusivity in teacher training colleges so as to implement inclusive practices.
Identity construction and reconstruction among male teachers in early childhood settings
(University of the Free State, 2024) Mofokeng, Mahudi Magdelina; Ndlovu, B. N.
Identity construction and reconstruction among male teachers in early childhood education (ECE) settings has brought attention to the teaching of young children, where male teachers expect to redefine themselves among young learners. Research shows that few male teachers have constructed and reconstructed their identities through training in early childhood development. The research was framed using two theoretical constructs: identity theory and social identity theory. The study employed phenomenology, focusing on the commonality of the lived experiences within a particular group to understand the problem in its context in this case, construction, and reconstruction of identity among male teachers in ECE, and provided a comprehensive description of individuals’ subjective experience of an event or phenomenon. Phenomenology emphasises that only those who have personally encountered things can convey them to the external realm. The qualitative approach tests the theories and intervention techniques, using the snowball sampling technique to find five participants from 5 rural schools in the Thabo-Mofutsanyane District of the Free State province, with generation of data using semi-structured and focus group interviews. The study recommends recruitment strategies in ECE settings so that young children may be exposed to both genders in these settings. Workshops need to be held for male teachers, to advise them on how to deal with challenges that they will face from society and encourage them to stand firm with their career choice.
Towards a facilitation framework for effective learning and teaching for first-year students in the building measurement module
(University of the Free State, 2024) Els, Mart-Mari; Loots, S.; Holtzhausen, S. M.
The purpose of this study is twofold. First, it aims to identify the pedagogical challenges faced by first-year students and lecturers in the building measurement module in South African universities. Second, it seeks to investigate the constructivist teaching approach, with a particular focus on the applicability of Vygotsky’s theory of sociocultural development, as a potential solution to these challenges.
As such this study employed two separate but complementary research designs. Due to the limited contextual knowledge in the learning and teaching environment of first-year students in the building measurement module, it is essential to investigate and establish the challenges they face, as there is currently very little information available on this topic. The second methodology examines and proposes a potential solution to these challenges. The chosen research designs for this study are a convergent mixed-methods approach and a case-study design.
Data collected through a baseline survey, focus-group discussions, and semi-structured interviews in the first methodology informed the case-study design. In this case study, data from pre- and post-tests, participant observations, and reflections yielded significant results. The first methodology identified various challenges faced by first-year students and lecturers in the building measurement module. These challenges were then addressed and tested in the second methodology.
The findings of the research suggest that a constructivist teaching approach, more specifically Vygotsky’s theory of sociocultural development are successful and can be applied through a facilitation framework. The value of this research study is the enhancement of first-year learning and teaching experience in Quantity Surveying Education.
An appreciative inquiry into the entrepreneurial attributes of three young African entrepreneurs
(University of the Free State, 2024) Bucheli, Zosia; Pretorius, J. P. H.
The research is an Appreciative Inquiry into the Entrepreneurial Attributes of three young African Entrepreneurs. It recognised the vital role that entrepreneurial attributes play in entrepreneurial success. The study aimed to inquire into and identify the positive and most life-giving entrepreneurial attributes that these three individuals have developed through their entrepreneurial endeavours. The study assumed an Appreciative Inquiry perspective which accentuated and focused on strengths-based positive attributes.
The research employed 5D Appreciative Inquiry Cycle workshops for each of the three African entrepreneurs to gather in-depth information regarding their most effective entrepreneurial attributes. Through the use of an appreciative lens, the study aimed to uncover the individual strengths and life-giving attributes of each entrepreneur which empowered them to further development to advance their entrepreneurship. These were encapsulated by the positive entrepreneurial attributes which emerged through the workshops.
The results of this research highlight the best entrepreneurial attributes of these three African entrepreneurs. Each article provides unique results specific to the entrepreneur studied. The entrepreneurs’ individual experiences, cultural backgrounds, communities and entrepreneurial journeys have impacted the development of their positive entrepreneurial attributes.
Further, the research provides necessary literature on entrepreneurial attributes. It also contributes towards the individual experiences and strategies utilised by three African entrepreneurs to further enhance and develop their entrepreneurial attributes. Aspiring entrepreneurs on the African continent may employ these practical implications in their entrepreneurial endeavours. It fosters the identification of effective entrepreneurial attributes which propels economic growth and development in South Africa and elsewhere.
A collaborative self-study exploring the experiences of Creative Arts teacher educators to inform professional practice
(University of the Free State, 2024) Chisale, Paseka Blessing; Müller, Marguerite
This thesis represents a living assemblage of my personal development as a Creative Arts teacher educator and the collective experiences of other educators in this field. By intertwining my educational journey with a broader focus on Creative Arts teacher education, the study reflects how my background in Art Education informs and shapes my current practices. Using self-study and Arts-Based Research (ABR) methods, I explore the interplay between personal memories, past experiences, and the evolving identity of Creative Arts teacher educators. Central to this inquiry is the concept of rhizomatic pockets, which are repositories of knowledge and memories that shape individual pedagogical practices, and the collective understanding of how past experiences influence present and future teaching.
Drawing on the narrative of the Avengers' journey in 𝘌𝘯𝘥𝘨𝘢𝘮𝘦 this study illustrates the process of revisiting and reinterpreting significant moments in teaching and learning, allowing educators to shed biases and inform future practice. It emphasises the importance of reflexive and collaborative learning, highlighting the transformative potential of engaging with colleagues, mentors, and students to create a richer, more nuanced understanding of teaching and learning within Creative Arts Teacher Education.
The study advocates for positioning Creative Arts classrooms as dynamic research sites where teacher educators engage in inquiry to understand how collective experiences and contextual factors shape pedagogy. Recognising classrooms as spaces where social and physical environments intersect, I argue for acknowledging the lived experiences of both students and educators as rhizomatic pockets that inform practice. Educators can foster meaningful student engagement, cultivate confidence, and promote artistic expression by creating safe and supportive environments.
Further, this research highlights the value of collaboration and communities of practice. It suggests that through collaborative self-study and reflexive practices, Creative Arts teacher educators can co-construct knowledge, mentor each other, and engage in continuous professional growth. Collaborative research in this context enhances individual pedagogical practices and the collective development of evidence-based best practices for Creative Arts Teacher Education.
Ultimately, this study highlights the importance of lifelong learning and adaptability for Creative Arts teacher educators. By embracing a research-oriented, reflexive approach, teacher educators can innovate within their classrooms, contribute to the advancement of Creative Arts Teacher Education, and better prepare future educators. The concept of rhizomatic pockets emerges as a guiding framework for understanding how personal and collective experiences can transform teaching and learning within this field.