An Undergraduate Experiment Using Microwave-Assisted Synthesis of Metalloporphyrins: Characterization and Spectroscopic Investigations

Neyadi, Shaikha S. Al; Alzamly, Ahmed; Al-Hemyari, Abdullah; Tahir, Ibrahim M.; Al-Meqbali, Saeed; Ahmad, Mohd Azmier; Bufaroosha, Muna

doi:10.12691/wjce-7-1-4

Cited by 7 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the synthesis, the usage of a microwave oven has a clear connection to the everyday life of school students. The benefits for a school experiment , arise in particular from the reduced reaction times and the lower energy demand, which is why microwave synthesis (Figure c) is frequently linked to green and sustainable chemistry in the literature. − On the basis of the easily visible combustion process, the ongoing redox reaction must be discussed in a chemical manner (Supporting Information 6 “Student Worksheet Systems in Sustainable Lighting through LED”) and should involve typical chemical concepts and knowledge. The urea used functions as a reducing agent and is part of many car combustion engines, for example, diesel exhaust fluid (DEF, known as AdBlue in Germany).…”

Section: Luminophores For Integrating Systems Thinking Into Modern Sc...mentioning

confidence: 99%

Microwave Synthesis of a Prominent LED Phosphor for School Students: Chemistry’s Contribution to Sustainable Lighting

2019

View full text Add to dashboard Cite

Scarcer raw materials and climate change are scientific facts that make it necessary to enhance energy efficiency and to recycle raw material. Fundamental researchers at universities as well as in industry agree that light-emitting diodes (LEDs) are the most efficient and sustainable light sources of the future. Chemistry plays a significant role in the development of white, energy-efficient LEDs; however, students and society do not seem aware of this role. This paper presents a school-student-friendly synthesis of cerium-doped yttrium aluminum garnet (YAG:Ce) in a laboratory microwave oven. YAG:Ce is the most widely applied luminescent material ("phosphor") used in white LEDs. The initial blue light of a gallium nitride-based primary LED is partly down-converted by the YAG:Ce phosphor on top of the LED chip, resulting in yellow-green emission. Additive color mixing (blue + yellow-green) results in cold-white light generation. This experiment aims to demonstrate chemistry's contribution to sustainable development in a comprehensible way. On the basis of such phosphorconverted LEDs, the interdependence of and cooperation between different scientific disciplines are outlined. The critical question of the related raw materials, in this case especially rare earth elements (REEs), their lifetime, and their possible recycling, represents another important issue for sustainable development and systems thinking and is shown in this example from everyday life.

show abstract

Section: Luminophores For Integrating Systems Thinking Into Modern Sc...mentioning

confidence: 99%

Microwave Synthesis of a Prominent LED Phosphor for School Students: Chemistry’s Contribution to Sustainable Lighting

2019

View full text Add to dashboard Cite

show abstract

“…Even if we downplay the probable impact anticipated with these developments, there are problems with our current organic chemistry laboratories that are historical, as discussed in a 2004 commentary by Mohrig, and the embodiment of a solution is still not clearly in sight. Most recently proposed lab activities in this and other educational journals still very much emphasize new chemistry and technical improvements with a definitive organic chemistry theme. − Overall, relatively few studies have touched on the issue of training students to enable organic chemistry in a real-world lab, where everything may not be perfect or intuitive.…”

Section: Introductionmentioning

confidence: 99%

Improving Undergraduate Organic Chemistry Laboratories through Integration with Research: Prospects and a Model Study

Yu,

Lian,

Lin

et al. 2024

J. Chem. Educ.

View full text Add to dashboard Cite

As a model study for improving undergraduate organic chemistry laboratories with contemporary research concepts and practices, we evaluated a project module aiming at the synthesis of two porphyrin compounds. The module was implemented in a format that differed in several ways from that of a traditional course. It was designed for small student group participation in a research-oriented setting. The students were given multiple choices of literature methods for the synthesis. They were led to discuss the pros and cons and rate the practicality of the methods against the project goals and laboratory conditions. Participation in the reasoning and decision-making processes substantially enhanced the depth of learning. They were encouraged to innovate and resolve an equipment problem incidental to the chosen method by creating a steam bath reactor. They were urged to cut down on waste and study the use of hydrophobic compounds in water for sustainability. The products of the project module were designed to support ongoing research, which gave the students a strong sense of reality and responsibility. They were motivated to care for the details and quality of their work by a desire to provide quality products for their intended research. As an option instead of a full implementation of the proposed format, the project module can be modified to serve as a four-session curriculum for a traditional organic chemistry laboratories course. We expect it will add dimensions to the learning of organic chemistry through the enhanced practice of problem-solving and connecting lab activities to the modern environment.

show abstract

Porphyrin and Phthalocyanine as Materials for Glass Coating—Structure and Properties

Popanda

Środa²

2023

Advances in Material Research and Technology

View full text Add to dashboard Cite

An Undergraduate Experiment Using Microwave-Assisted Synthesis of Metalloporphyrins: Characterization and Spectroscopic Investigations

Cited by 7 publications

References 5 publications

Microwave Synthesis of a Prominent LED Phosphor for School Students: Chemistry’s Contribution to Sustainable Lighting

Microwave Synthesis of a Prominent LED Phosphor for School Students: Chemistry’s Contribution to Sustainable Lighting

Improving Undergraduate Organic Chemistry Laboratories through Integration with Research: Prospects and a Model Study

Porphyrin and Phthalocyanine as Materials for Glass Coating—Structure and Properties

Contact Info

Product

Resources

About