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yhc0316銀蟲 (初入文壇)
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[求助]
求翻譯,謝謝!
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Regents and solvents All the chemicals were purchased from Aldrich Chemical Co. Other solvents and reagents were analytical grade and used as received, unless otherwise stated. Tetrahydrofuran (THF) was distilled over metallic sodium and dimethyl formamide (DMF) over calcium hydride before use. 1H and 13C NMR spectra were recorded on a Bruker-AC500 (500 MHz) spectrometer with CDCl3 as solvent and tetramethylsilane (TMS) as the internal standard. Elemental analysis was performed on a Perkin-Elmer 2400. UV-vis absorption and diffuse reflectance absorption spectra were recorded on a Hitachi U- 4100 spectrophotometer. Fluorescence measurements were carried out with a Hitachi F-4600 spectrophotometer. The peak wavelength of the lowest energy absorption band was used as the excitation wavelength for the PL measurement. The fluorescence quantum yield (F) was determined at room temperature by the dilution method using fluorescein in water (pH ¼ 11) as the reference. Powder wide-angle X-ray diffraction (PXD) experiments were performed on a powder X-ray diffractometer (INCA Energy, Oxford Instruments) operating at 3 kW. Differential scanning calorimetry (DSC) curves were determined on a Netzsch DSC 204F1 at a heating rate of 10 C min1. |
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(實驗)試劑與溶劑 (reagent 是試劑,你復(fù)制錯了) (實驗)所用樣品均來自阿拉丁試劑廠。其他試劑及溶劑均為分析純,且為新到樣品(收到即使用),其他純度的樣品除外。使用前先將金屬鈉用四氫呋喃(THF)進行蒸餾,氫化鈣用二甲基甲酰胺(DMF)進行蒸餾。 以CDCl3為溶劑、四甲基硅烷(TMS)為內(nèi)標(biāo)物,用Bruker-AC500 (500 MHz)測得1H 和 13C 的NMR光譜。利用 Perkin-Elmer 2400進行基礎(chǔ)分析。用Hitachi U- 4100分光光度計記錄了紫外可見吸收光譜 和漫反射吸收光譜。以能量最低的吸收譜帶的波長的峰值作為激發(fā)波長,來進行PL測量。熒光量子的含量在室溫下通過稀釋法進行了測定,以熒光素水溶液作為其參照。寬角度PXD測試實驗在XRD(INCA 能源, 牛津儀器設(shè)備生產(chǎn))上于3KW的功率下進行。掃描差熱(DSC)曲線由Netzsch DSC 204F1測試儀以10度每分鐘的升溫速率進行了描繪。 |
至尊木蟲 (知名作家)
Translator and Proofreader
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試劑和溶劑 所有的化學(xué)品均購自Aldrich化學(xué)公司。除非另有說明,其它溶劑和試劑均為分析級并且原樣使用。使用前,用金屬鈉對四氫呋喃(THF)重蒸餾,用氫化鈣對二甲基甲酰胺(DMF)重蒸餾。 以CDCl3為溶劑、四甲基硅烷(TMS)為內(nèi)標(biāo),用Bruker-AC500(500 MHz)光譜儀記錄1H和13C的NMR光譜。用Perkin-Elmer 2400進行元素分析。用日立U-4100分光光度計記錄紫外-可見光吸收光譜和彌散反射吸收光譜。用Hitachi F-4600分光光度計進行熒光測量。用最低能量的吸收帶的峰值波長作為激發(fā)波長測定PL。用稀釋法在室溫下測定熒光量子產(chǎn)率(F),以熒光素水溶液(pH=11)作參照。粉末廣角X射線衍射(PXD)實驗是在粉末X射線衍射儀(INCA能源,牛津儀器)用3千瓦功率進行。差示掃描量熱法(DSC)曲線用Netzsch DSC204F1測定,所用升溫速率為10度/分鐘。 |
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