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筆墨輕點(diǎn)新蟲 (初入文壇)
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| However, solvent polarity exerted a great effect on the PL emission, as shown in Fig. 5 and Table 2. The PL intensities (I) and quantum yield (F) of the solutions of the three compounds decreased with increasing solvent polarity. TheFof1B-TPA, 2B-TPAand3B-TPAwere 0.57, 0.67 and 0.73 in CH (lowest polarity, theFwere very high), and 0.19, 0.20 and 0.20 in DMSO (highest polarity), respectively. In CH, theFwere approximately 3.0-, 3.4-, and 3.7-fold higher as compared with those in the DMSO. As illustrated in Fig. 5, the maximum emission wave-length (l) of each compound progressively shifted to a longer wavelength when the polarity of the solvent increased from CH to DMSO. |
至尊木蟲 (知名作家)
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| 然而,如圖5所示和表2所示,溶劑的極性對(duì)PL發(fā)光具有很大影響。PL強(qiáng)度(I)和三種化合物溶液的量子效率(F),隨著溶劑的極性降低以增加。1B-TPA,2B-TPA和3B-TPA的F在CH(極性最低,F(xiàn)非常高)中分別為0.57,0.67和0.73的,而在DMSO(極性最高)中分別為0.19,0.20和0.20。F在CH中分別是在DMSO中的約為3.0-,3.4-,和3.7-倍。如圖5所示,當(dāng)所用溶劑的極性由CH提高到DMSO時(shí),各化合物的最大發(fā)光波長(zhǎng)(l)向更長(zhǎng)波長(zhǎng)逐漸遷移。 |
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