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蜀將何在木蟲 (正式寫手)
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[交流]
PEDOT:PSS薄膜的拉曼主峰向高波數(shù)移動是什么原因
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RT,經(jīng)過后處理的PEDOT SS薄膜導電性變好,但是拉曼主峰并沒有像文獻里說的那樣向低波數(shù)移動(表明由苯型向醌型的轉(zhuǎn)變),反而移向高波數(shù),這是為什么? |
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您好,最近看文獻,“Fig. 4b shows the peak position variations of the two major peaks for the symmetric and asymmetric Ca–Cb stretching vibrations (Fig. S5† . Evidently, except for the sample with the 3 wt% EGaddition, the additions of 3 to 5 wt% DMSO and of 5 to 9 wt% EG to PEDOT SS cause the symmetric and asymmetric Ca–Cbstretching modes shied to higher wavenumbers. These shis can be attributed to the changes in the electronic structure of PEDOT upon oxidation (doping) and rearrangement of the PEDOT chains from the coil-like benzoid structure to a more linear or extended quinoid structure as a result of the co-solvent addition.4,8,28 The expansion of chains is believed to cause the size increase in the PEDOT nanocrystals observed in the AFM images.” 拉曼主峰并向高波數(shù)移動(表明由苯型向醌型的轉(zhuǎn)變),您是在哪篇文獻看到拉曼主峰向低波數(shù)移動(表明由苯型向醌型的轉(zhuǎn)變)? |
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