{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T21:02:01Z","timestamp":1784840521371,"version":"3.55.0"},"reference-count":0,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T00:00:00Z","timestamp":1784678400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100000928","name":"Welch Foundation","doi-asserted-by":"publisher","award":["BP-0037"],"award-info":[{"award-number":["BP-0037"]}],"id":[{"id":"10.13039\/100000928","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Appl Spectrosc"],"abstract":"<jats:p>\n                    A divide-and-conquer approach is presented that helps undergraduate students interpret organic infrared-spectra. In this method,\n                    <jats:italic toggle=\"yes\">DivnConqIR<\/jats:italic>\n                    , students deal with the confusion of a complicated spectrum by focusing first on the carbonyl band at \u223c1720 cm\n                    <jats:sup>-1<\/jats:sup>\n                    near the middle of the spectrum. When present, its position and related bands can be analyzed to determine the specific functional group to which the carbonyl belongs; in its absence, students eliminate many functional groups. In either case, students begin spectral interpretation with significant accomplishment. This strategy divides the spectrum again, now at 3000 cm\n                    <jats:sup>-1<\/jats:sup>\n                    , to define the backbone of the organic molecule and determine the possible presence of alkenes, alcohols, amines, or terminal alkynes. Students divide the spectrum again, now at 1375 cm\n                    <jats:sup>-1<\/jats:sup>\n                    , to confirm the presence of methyl group(s) with the methyl umbrella band or, if present, isopropyl or\n                    <jats:italic toggle=\"yes\">tert<\/jats:italic>\n                    -butyl doublet bands for further connectivity. Students divide the spectrum again, now at 1000 cm\n                    <jats:sup>-1<\/jats:sup>\n                    , to search for the presence of one or more C\u2212O stretches and to confirm the presence of alcohols, carboxylic acids, esters, or anhydrides, or to discover ethers. Lastly, students use\n                    <jats:italic toggle=\"yes\">DivnConqIR<\/jats:italic>\n                    to examine unaccounted bands to identify other useful functional groups that may be present. Students interpret IR spectra without confusion and determine functional groups effectively; they integrate functional groups into possible complete structures. Qualitative and quantitative student performance data are offered to suggest the effectiveness of this interpretive approach, and\n                    <jats:italic toggle=\"yes\">DivnConqIR<\/jats:italic>\n                    is compared to other IR interpretation methods to show that it is unique and most comprehensive. Many worked examples are presented, and additional resources are provided.\n                  <\/jats:p>","DOI":"10.1177\/00037028261474246","type":"journal-article","created":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T18:46:58Z","timestamp":1784746018000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["EXPRESS: A Divide-and-conquer Approach that Guides Undergraduate Students in the Interpretation of Organic Infrared Spectra"],"prefix":"10.1177","author":[{"given":"Shaun D.","family":"Black","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,7,22]]},"container-title":["Applied Spectroscopy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00037028261474246","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00037028261474246","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T20:16:33Z","timestamp":1784837793000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/00037028261474246"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7,22]]},"references-count":0,"alternative-id":["10.1177\/00037028261474246"],"URL":"https:\/\/doi.org\/10.1177\/00037028261474246","relation":{},"ISSN":["0003-7028","1943-3530"],"issn-type":[{"value":"0003-7028","type":"print"},{"value":"1943-3530","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7,22]]},"article-number":"00037028261474246"}}