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Teaching Softness of Polymer Microgels Employing Atomic Force Microscopy

JOURNAL OF CHEMICAL EDUCATION 2025年第5期102卷 2013-2019页

作者： Schulte, M. Friederike Schog, Simon Bochenek, Steffen Kratzenberg, Timon Schroeder, Michael Richtering, Walter Rhein Westfal TH Aachen Inst Phys Chem D-52056 Aachen Germany

Studying the properties of soft nanoparticles exposes students to emerging trends in materials science, fosters interdisciplinary knowledge, and prepares them for their own contributions in both academic and industrial settings. We developed a laboratory atomic force microscopy (AFM) experiment using poly-N-isopropylacrylamide (PNIPAM) microgels and investigated single nanogels as well as monolayers by AFM and quantitative image analysis. The experiments show how soft nanogels are deformed at interfaces, and the students learn to quantify the deformation by quantitative analysis of height and phase images. The deformation is related to a core-corona type of cross-linker distribution inside the microgel. Further experiments address the structure of microgel monolayers and demonstrate structural transitions from a hexagonal phase of microgels in corona-corona contact toward a different regime at higher interfacial concentrations, in which microgels form a second hexagonal phase in core-core contact. A quantitative analysis of height images provides the distribution of nearest-neighbor distances. The students use dip-coating to prepare the samples and learn how to correlate AFM experiments in the dry state, i.e., at the solid/air interface after evaporation of the solvent, with properties of the microgel in bulk solution and at the water/air interface.

关键词： Audience: Upper-Division Undergraduate Domain: PolymerChemistry Interdisciplinary/Multidisciplinary Pedagogy: Hands-On Learning/Manipulatives Topic: laboratoryEquipment/Apparatus laboratory computing/interfacing Materials Science Physical Properties

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Preparing Students for Practical Sessions Using laboratory Simulation Software

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JOURNAL OF CHEMICAL EDUCATION 2019年第1期96卷 153-158页

作者： Blackburn, Richard A. R. Villa-Marcos, Barbara Williams, Dylan P. Univ Leicester Dept Chem Univ Rd Leicester LE1 7RH Leics England

A series of laboratory themed simulations developed by Learning Science Ltd. were integrated into a first year laboratory module at the University of Leicester. These simulations allow students to attempt the experiments they will do in the laboratory in a risk-free way that provides the opportunity to make mistakes and learn how to correct them using the immediate feedback generated. High student engagement was observed during our pilot, and student end-of-module comments were very positive for this technological enhancement.

关键词： laboratory Instruction laboratory computing/interfacing laboratory Equipment/Apparatus First-Year Undergraduate/General Computer-Based Learning

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Integrating Chemistry laboratory Instrumentation into the Industrial Internet: Building, Programming, and Experimenting with an Automatic Titrator

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JOURNAL OF CHEMICAL EDUCATION 2016年第1期93卷 175-181页

作者： Famularo, Nicole Kholod, Yana Kosenkov, Dmytro Monmouth Univ Dept Chem & Phys 400 Cedar Ave West Long Branch NJ 07764 USA

This project is designed to improve physical chemistry and instrumental analysis laboratory courses for undergraduate students by employing as teaching tools novel technologies in electronics and data integration using the industrial Internet. The project carried out by upper division undergraduates is described. Students are exposed to a complete process of building, calibrating, and programming an automatic titrator using an open-source microcontroller platform and standard pH probes, and integrating the instrument into the Internet. The approach is flexible and can be used to enable integration of various laboratory instruments (e.g., temperature, pressure, salinity probes, etc.) into the industrial Internet. The hardware and software are open-source, which makes further modification and development by the academic community possible.

关键词： Upper-Division Undergraduate Analytical Chemistry Physical Chemistry laboratory Instruction Internet/Web-Based Learning laboratory Equipment/Apparatus laboratory computing/interfacing Aqueous Solution Chemistry Titration/Volumetric Analysis Equilibrium

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Results of a Three-Year Survey on the Implementation of Research Data Management and the Electronic laboratory Notebook (ELN) Chemotion in an Advanced Inorganic Lab Course

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JOURNAL OF CHEMICAL EDUCATION 2023年第11期100卷 4287-4297页

作者： Fink, Fabian Hoffmann, Alexander Herres-Pawlis, Sonja Rhein Westfal TH Aachen Inst Inorgan Chem D-52074 Aachen Germany

As ongoing digitalization accelerates the execution of experiments and the documentation and storage of the corresponding data substantially, appropriate research data management (RDM) is a necessity to enable sustainable research at all. Consequently, a rethinking is currently taking place in academia. This process becomes visible by the utilization of electronic laboratory notebooks (ELNs) for documentation, the publication of research data in repositories, or the publishers' requirement for authors to provide a data availability statement. Despite the growing awareness of RDM in academia, the integration of the topic into curricula of chemistry studies is, if at all, in its infancy. As an initial example of incorporating RDM into curricula, an ELN was implemented in an advanced inorganic lab course for upper-division undergraduate students three years ago, supported by learning materials on RDM in general. A survey among the students helped, first, tracking the implementation of the ELN and the integration of RDM and, second, improving teaching materials and concepts. The three-year follow-up shows a growing awareness of RDM and higher acceptance toward ELNs among the students. The survey results highlight the need for and progress in teaching RDM in an early stage of chemistry studies already. Moreover, the possibility to integrate the topic here as a hands-on experience is a facile method for fast integration into teaching without changing the complete curricula.

关键词： Upper-Division Undergraduate Chemoinformatics Curriculum Inorganic Chemistry Hands-on Learning Internet/Web-Based Learning laboratory computing/interfacing Standards National/State

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Increasing Enthusiasm and Enhancing Learning for Biochemistry-laboratory Safety with an Augmented-Reality Program

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JOURNAL OF CHEMICAL EDUCATION 2018年第10期95卷 1747-1754页

作者： Zhu, Bolin Feng, Mi Lowe, Hannah Kesselman, Jeffrey Harrison, Lane Dempski, Robert E. Worcester Polytech Inst Dept Comp Sci Worcester MA 01609 USA Worcester Polytech Inst Dept Chem & Biochem Worcester MA 01609 USA

According to the most recent data from the federal Chemical Safety and Hazard Investigation Board, between 2001 and 2011, more than 120 university laboratory accidents have caused injuries (including one death) and millions of dollars in damages. laboratory-safety lessons normally comprise lecture slides alongside occasional movies and tours of laboratory facilities. This approach limits the realism of safety instruction within the laboratory. In addition, enthusiasm for laboratory-safety lectures is often low for both instructors and participants. To address these issues, we have developed an augmented-reality (AR) program to increase enthusiasm and enhance the learning experience for laboratory safety using Microsoft HoloLens. AR is an emerging field that uses computer technologies to generate realistic images, sounds, and other sensations that replicate a real environment. When compared with static or one-sided laboratory lectures, our approach creates an interactive learning environment where students must physically move around the laboratory to learn about laboratory safety. As each of the images and holograms for this open-source program can be placed in any location for any laboratory configuration, our program is designed to be used in any laboratory around the globe.

关键词： Upper-Division Undergraduate Second-Year Undergraduate Curriculum Interdisciplinary/Multidisciplinary laboratory Instruction Safety/Hazards Computer-Based Learning Inquiry-Based/Discovery Learning laboratory computing/interfacing laboratory Equipment/Apparatus

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3D Printing of Protein Models in an Undergraduate laboratory: Leucine Zippers

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JOURNAL OF CHEMICAL EDUCATION 2015年第12期92卷 2120-2125页

作者： Meyer, Scott C. Benedictine Univ Dept Chem Lisle IL 60532 USA

An upper-division undergraduate laboratory experiment is described that explores the structure/function relationship of protein domains, namely leucine zippers, through a molecular graphics computer program and physical models fabricated by 3D printing. By generating solvent accessible surfaces and color-coding hydrophobic, basic, and acidic amino acid residues, students are able to visualize noncovalent interactions that are important in protein folding and protein protein interactions.

关键词： Upper-Division Undergraduate Biochemistry Computer-Based Learning Hands-On Learning/Manipulatives Proteins/Peptides laboratory computing/interfacing

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Implementation and Student Perceptions on Google Docs as an Electronic laboratory Notebook in Organic Chemistry

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JOURNAL OF CHEMICAL EDUCATION 2018年第7期95卷 1102-1111页

作者： Lee, Deborah Bromfield Florida Southern Coll Dept Chem Biochem & Phys 111 Lake Hollingsworth Dr Lakeland FL 33801 USA

Electronic laboratory notebooks are gaining in popularity in industry and academia. Various types of electronic laboratory notebooks exist, and a variety of tools can be used for these forms of notebooks. Some tools are commercial products dedicated to being electronic notebooks, while individual organizations can develop ones for their own needs with tools such a OneNote and Google Docs. Google Docs was used as an electronic notebook in organic chemistry, and student perceptions were evaluated using surveys. These tools are used to reduce students' time preparing for lab and writing reports. The implementation of the notebooks and the findings of students' perceptions on the implementation are discussed.

关键词： General Public Second-Year Undergraduate laboratory Instruction Organic Chemistry laboratory computing/interfacing Computer-Based Learning

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Teaching Electronics and laboratory Automation Using Microcontroller Boards

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JOURNAL OF CHEMICAL EDUCATION 2014年第9期91卷 1458-1463页

作者： Mabbott, Gary A. Univ St Thomas Dept Chem St Paul MN 55105 USA

Modern microcontroller boards offer the analytical chemist a powerful and inexpensive means of interfacing computers and laboratory equipment. The availability of a host of educational materials, compatible sensors, and electromechanical devices make learning to implement microcontrollers fun and empowering. This article describes the advantages of using Arduino microcontroller boards for lab automation. It also includes lesson plans and exercises for teaching how to use them in the analytical chemistry curriculum. Two of these exercises include acquiring data from simple spectrometers and the control of a thermal cycler for PCR: The versatility of these devices will make them another important tool in the analytical chemist's toolkit.

关键词： Upper-Division Undergraduate Analytical Chemistry Curriculum Computer-Based Learning laboratory computing/interfacing laboratory Equipment/Apparatus

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Development of a Web-Based laboratory Class to Reduce the Challenges in Teaching Fragment-Based Drug Design

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JOURNAL OF CHEMICAL EDUCATION 2020年第2期97卷 427-436页

作者： Shi, Xing-Xing Li, Jing-Yi Chen, Qiong Zhu, Xiao-Lei Hao, Ge-Fei Yang, Guang-Fu Cent China Normal Univ Wuhan Peoples R China Guizhou Univ Guiyang Peoples R China Collaborat Innovat Ctr Chem Sci & Engn Tianjin Peoples R China

Fragment-based drug design (FBDD) is a promising methodology to find quality drug leads. It is important in the curriculum of a drug design course due to its impact on drug discovery. However, teaching FBDD and its use by students remain challenging in most cases. A web-based laboratory class to teach FBDD in the form of our copyrighted workshops is described. The students' feedback and a quantitative evaluation of the results show that the web-based laboratory class is popular with students and facilitates students' learning of FBDD for design of possible drug-like molecules.

关键词： Graduate Education/Research Chemoinformatics Internet/Web-Based Learning Medicinal Chemistry laboratory computing/interfacing

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Electronic laboratory Notebooks Allow for Modifications in a General, Organic, and Biochemistry Chemistry laboratory To Increase Authenticity of the Student Experience

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JOURNAL OF CHEMICAL EDUCATION 2018年第11期95卷 1922-1928页

作者： Dood, Amber J. Johnson, Lisa M. Shorb, Justin M. Hope Coll Dept Chem 35 East 12th St Holland MI 49423 USA

When used effectively, laboratory courses can be very important for enriching teaching and learning. However, a review of many colleges and universities across the nation reveals that around 50% of the current Bachelor of Nursing programs have opted to remove (or possibly never included) the chemistry laboratory component. Authenticity is particularly important for prehealth professions students who are required to take general, organic, and biochemistry (GOB) chemistry courses;unfortunately, these students often do not feel the courses are relevant to their future careers. Using three of Herrington and Oliver's nine situated learning design elements, a GOB chemistry laboratory course has been redesigned to implement more authentic activities in the curriculum, largely through the use of an electronic laboratory notebook. The authenticity of the improvements was reviewed by a panel of practicing nurses and nursing faculty, and we report their feedback and evaluation. The general consensus of the panel is that the changes in the curriculum toward more authenticity are a great improvement for prehealthcare professionals.

关键词： Chemical Education Research laboratory Instruction First-Year Undergraduate/General Computer-Based Learning laboratory computing/interfacing Nonmajor Courses

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