精准入微——将微流控技术引入分析化学教学的探讨

微流控技术凭借其优异的微尺度操控能力,在分析化学和其他诸多领域得到了广泛而快速的发展。在本科阶段的分析化学课程引入微流控技术有助于提高分析化学教学的前沿性和趣味性,促进创新型人才的培养。本文回顾了微流控技术的发展史并挖掘了其中蕴含的课程思政元素,简要介绍了微流控技术的重要理论和微流控芯片的基本制作方法,讨论了微流控技术与分析化学的联系。在此基础上介绍了近年来微流控技术在分析化学领域,尤其是生命分析科学领域的研究进展,以期为分析化学教学引入微流控技术提供参考。     

化学双语教学微型课程“能量转化”的实践

化学双语教学微型课程"能量转化",在高中必修教材基础上对知识进行拓展,分析了化学反应中3种能量转化形式即化学能与光能、热能、电能的转化。内容包括介绍荧光棒的成分和作用原理;学习粗测饼干所含热量的方法,并分析误差原因;了解冷敷创可贴的应用,体会化学原理与实际生产、生活的联系;通过可乐电池的学生实验,进一步认识燃料电池。化学双语教学微型课程"能量转化"分2课时完成,教学实践包括教学目标的确定、教材的编写、2个阶段的教学过程以及实施教学评价等。     

试论高聚物结构与性能关系的三个层次

高分子物理的基本任务之一就是探求高聚物的结构与性能,揭示结构与性能之间的内在联系及其基本规律。高聚物结构与性能的关系应该包含3个层次:通过分子运动联系的"分子结构与材料性能"关系、通过产品设计联系的"凝聚态结构与制品性能"关系和通过凝聚态物理知识联系的"电子态结构与材料功能"关系。传统教材上仅讲授"结构与性能关系",有相当的局限性,需要在研究生阶段补充有关"凝聚态结构与制品性能"关系和"电子态结构与材料功能"关系的课程。     

案例教学模式在工科化学教学中的应用

结合"工科化学"课程的特点和存在的问题,从体现专业特色、与生活实践紧密结合、紧跟学科前沿和与探索性实验结合等4个方面探索在理论教学中引入应用案例教学模式,激发学生学习积极性和主动性,提升"工科化学"的课堂教学效果。     

化学实验与科研方法课程教学模式探讨

将研究型教学模式引入化学实验与科研方法课程,通过构建"课堂学习-自主实验-科学指导"三位一体的教学体系,开展科研方法论理论教学,设计以文献调研、实验设计、实验实施、结果分析为主线的研究型教学实验,建立多元化考核体系,激发学生科研热情和创新意识。     

非化学专业无机及分析化学理论与实验教学的一致性

在"讲一练二考三"新型教学理念的指导下,结合多年非化学专业无机及分析化学课程理论教学和实验教学的经验,针对无机及分析化学理论课和实验课教学的特点和存在的一些问题,阐述了在无机及分析化学课程教学中理论课教学内容和实验课教学内容相结合的实践探索和体会,以及取得的效果。     

工程教育认证背景下课程思政融入模式探索与实践——以《聚合物成型加工原理》课程为例

在工程教育认证新形势下,以聚合物成型加工原理课程为例,引入"社会主义核心价值观"德育元素与本专业课程有机融入,从课程教学内容到教学方法等方面对专业课开展思政教育进行探索和实践.将课程思政与高分子材料专业人才培养目标、新工科工程教育认证、本地新材料产业发展以及贵阳学院办学定位有机融合,坚持专业课知识传授与价值引领相结合,...     

《聚合物加工原理》多元化题库的构建及实施效果

《聚合物加工原理》是高分子材料成型加工专业的核心课程。该课程具有理论性与实践性并重,课程知识点多、涉及面广等特点,仅凭借教材章末问答式练习题为基础的作业布置、回收与批改模式,很难让学生全面理解进而掌握课程核心内容并最终学好该课程。结合课程教学需要与高分子材料加工的专业特色,本文提出从试题内容、考察类型与知识层次三个角度构建多元化课程题库并以课堂作业、阶段性测验、实践环节思考题与社会实践课题等多种形式引入教学活动,在教学过程中逐渐形成了题库应用、学生、教师相互反馈的作业模式。通过对比引入题库前后学生的学习效果,发现题库的引入不仅能够客观而规范地了解学生对所学知识的理解掌握程度,便于教师及时调整教学内容;而且有利于学生精确把握知识难点与重点。多层次的练习培养了学生运用理论基础解决实际问题的能力,增强了开展科研活动的兴趣,综合提升了学习效果。     

高分子化学创新教学与一流课程建设

基于学情分析与独立思考,根据提高人才培养质量需要,在"以学生为中心、注重学生兴趣与能力,特别是可持续发展能力及创新能力培养"的教学思想指导下,针对高分子化学课程教学过程中的一些重点、难点、"痛点"问题,以及学生学习过程存在的一些短板问题,包括高分子化学课程特有的问题,所有工科专业课程共有的问题,以及所有大学课程都有的问题等,从"革新思想、优化内容、改进方法、更新手段、加强综合、增进渗透"等方面系统性地进行创新教学实践,取得了一系列成果,并将课程建设成为省级一流课程.     

面向本科生的“量子世界探秘”通识教育课程改革

量子世界探秘"是面向本科生开设的通识教育改革课程,以"通识"为出发点,以现代科学研究文献成果为依据,从"见识、知识、认识"3个层面论述了量子世界的历史、特征以及发展前景;通过具体实例,探讨了经典世界和量子世界的区别与联系,并分析了课程在激发学生的创新性思维、增强学科交叉意识等方面的作用。     

化“材”为“筑”

Chemistry is a central, practical and creative discipline. The development of chemistry plays an important role in the progress of science and society, as well as the improvement of the quality of human life. This paper introduces the chemical knowledge of stone, concrete, glass and other inorganic nonmetallic building materials by the anthropomorphically story. Taking nanomaterials as an example, the prospect of building materials development in the future is put forward.     

"Alpha"-, "beta"- and "delta"-anhydrodigitoxigenin

The syntheses of 3β-hydroxy-5β-carda-14, 20:22-dienolide (= «β»-anhydro-), 3β-hydroxy-5β-carda-8:14, 20:22-dienolide (= «α»-anhydro-) and «δ»-anhydro-digitoxigenin (= probably 3β-hydroxy-5β, 14β-carda-8, 20:22-dienolide) by the best ways known to date, have been described. «δ»-Anhydro-digitoxigenin represents the thermodynamically most stable isomer. In this isomer the double bond in position 8 is unaffected by hydrogenation with Pt in acetic acid; with perbenzoic acid an epoxide results from which, on hydrogenation, the double bond can be regenerated in its original position. Analogous reactions are known to occur in the 8:14-epoxides.     

Making "wheels" and "cubes" from triangles

[Mn(IV)Mn(II)3] triangular units directed by the presence of tripodal alcohols self-assemble in the presence of azide and acetate ligands to form either a [Mn24] "wheel" or a [Mn32] "cube".     

"Turn-on" fluorescent sensing with "reactive" probes

Chemical probes are valuable tools for the investigation of biochemical processes, diagnosis of disease markers, detection of hazardous compounds, and other purposes. Therefore, the development of chemical probes continues to grow through various approaches with different disciplines and design strategies. Fluorescent probes have received much attention because they are sensitive and easy-to-operate, in general. To realize desired selectivity toward a given analyte, the recognition site of a fluorescent probe is designed in such a way to maximize the binding interactions, usually through weak molecular forces such as hydrogen bonding, toward the analyte over other competing ones. In addition to such a supramolecular approach, the development of fluorescent probes that sense analytes through chemical reactions has witnessed its usefulness for achieving high selectivity, in many cases, superior to that obtainable by the supramolecular approach. Creative incorporations of the reactive groups to latent fluorophores have provided novel chemical probes for various analytes. In this feature article, we overview the recent progress in the development of turn-on fluorescent probes that are operating through chemical reactions triggered by target analytes. Various chemical reactions have been implemented in the development of many reactive probes with very high selectivity and sensitivity toward target analytes. A major emphasis has been focused on the type of chemical reactions utilized, with the hope that further explorations can be made with new chemical reactions to develop reactive probes useful for various applications.     

"Clickable" polymersomes

Polymersomes, composed of amphiphilic polystyrene-block-poly(acrylic acid) (PS-b-PAA), with the periphery being covered with azide groups, were used for further functionalization using "click" chemistry.