Modification of functional groups attached to conjugated polymer backbones can drastically alter the material properties. Oxidation of electron-donating thioalkyl substituents to electron-withdrawing sulfoxides or sulfones {is a|is really a|is actually a|can be a|is often a|is usually a} {particularly|especially|specifically} {effective|efficient|successful|powerful|productive|helpful} modification. {However|Nevertheless|Nonetheless|Even so|On the other hand|Having said that}, so far, this reaction has not been studied for the modification of conjugated polymers {used|utilized|employed|utilised|applied|made use of} in organic electronics. {Crucial|Essential|Vital|Critical|Important} {questions|concerns|queries|inquiries} {regarding|concerning|relating to|with regards to} selectivity and reaction time waited {to be|to become} addressed. {Here|Right here}, we show that the reaction is {highly|extremely|very|hugely} selective and {complete|total|full|comprehensive} {within|inside} just {a few|a couple of|several|a number of|some|a handful of} minutes when {using|utilizing|making use of|employing|working with|applying} dimethyldioxirane (DMDO) for the oxidation of thioalkyl substituents attached {to the|towards the|for the} {well|nicely|effectively|properly} investigated conjugated polymers poly(9-(1-octylnonyl)carbazole-alt-4,7-dithienylbenzothiadiazole) (PCDTBT) and poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT). The selectivity was confirmed by comparison with polymers obtained from pre-oxidized monomers and by {control|manage|handle} experiments {using|utilizing|making use of|employing|working with|applying} {related|associated|connected} polymers {without|with out|without having|with no|devoid of|without the need of} thioalkyl substituents. {Using|Utilizing|Making use of|Employing|Working with|Applying} DMDO, the oxidation yields acetone {as the|because the} only side-product, which reduces the work-up to mere evaporation of solvents and excessive reagent. Our {results|outcomes|final results|benefits} show that this oxidation {is an|is definitely an} {exciting|thrilling|fascinating} {method|technique|approach|strategy|system|process} for the preparation of electron-deficient conjugated polymers. {It may|It might} even {allow|permit|enable|let} the preparation of electron acceptors for solar cells {directly|straight} {from the|in the} electron donors. 1262412-13-4 uses (3,5-Difluoropyridin-2-yl)methanol supplier PMID:23074147
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