Transient-Absorption Spectroscopy of Cis-Trans Isomerization of N,N-dimethyl-4,4'-Azodianiline with 3D-Printed Temperature-Controlled Sample Holder

Autor/inn/en	Kosenkov, Dmytro; Shaw, James; Zuczek, Jennifer; Kholod, Yana
Titel	Transient-Absorption Spectroscopy of Cis-Trans Isomerization of N,N-dimethyl-4,4'-Azodianiline with 3D-Printed Temperature-Controlled Sample Holder
Quelle	In: Journal of Chemical Education, 93 (2016) 7, S.1299-1304 (6 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.6b00121
Schlagwörter	Leitfaden; Unterricht; Lehrer; Climate; Spectroscopy; Science Instruction; Chemistry; Undergraduate Students; Teaching Methods; Information Technology; Science Experiments; Energy; Scientific Concepts; Student Projects; Instructional Materials; Hands on Science; Laboratory Experiments + Suchen Sie Ihr Suchwort? Lesson concept; Instruction; Unterrichtsentwurf; Unterrichtsprozess; Teacher; Teachers; Lehrerin; Lehrende; Klima; Spektroskopie; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Chemie; Teaching method; Lehrmethode; Unterrichtsmethode; Informationstechnologie; Energie; Schulprojekt; Lehrmaterial; Lehrmittel; Unterrichtsmedien; Laboratory work; Laborarbeit
Abstract	The laboratory unit demonstrates a project based approach to teaching physical chemistry laboratory where upper-division undergraduates carry out a transient-absorption experiment investigating the kinetics of cis-trans isomerization of N,N-dimethyl-4,4'-azodianiline. Students participate in modification of a standard flash-photolysis spectrometer by adding a temperature-controlled sample holder. The sample holder design is open-source and can be reproduced with the 3D-printing technology. Students build the experimental setup, perform the transient spectroscopy experiment, and analyze the obtained kinetics data to estimate the activation energy, enthalpy, entropy, and Gibbs free energy of cis-trans isomerization of N,N-dimethyl-4,4'-azodianiline. (As Provided).
Anmerkungen	Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01