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In addition to the above visual fluorescence images, the fluorescence emission spectra in the pressing experiment were recorded on a luminescence spectrophotometer (Fig. 4), and the corresponding spectroscopic data is summarized in Table 1. All the ground FCn samples show similar emission spectra whose peak wavelengths are in a relatively narrow range of 616–595 nm, although their peak emission wavelengths in pristine solids are very different (597–538 nm) (Table 1). Moreover, most pressed samples can revert back to the fluorescence emission similar to the pristine solids upon annealing or solvent-fuming. In terms of pressing-induced spectral shift (Δλ(PFC)=λpressed--λannealed) FCn with longer N-alkyl chains show a more remarkable PFC behaviour ΔλPFC=( 45–54 nm), and those with shorter N-alkyl chains have ΔλPFC of 23–30 nm (Table 1). |

至尊木蟲 (知名作家)
Translator and Proofreader
| 除了上述的可視熒光圖像,在按壓試驗(yàn)中的熒光發(fā)射光譜記錄在發(fā)光分光光度計(jì)上(圖4),相應(yīng)的光譜數(shù)據(jù)總結(jié)于表1中。所有的研磨FCN樣本具有相似的發(fā)射光譜,其峰值波長在相對(duì)窄的范圍內(nèi)(616-595納米),盡管在原始的固體其峰值發(fā)射波長有很大的不同(597-538納米)(表1)。此外,大多數(shù)按壓樣品通過退火或溶劑型發(fā)煙可以恢復(fù)到與原始固體相似的熒光發(fā)射。就按壓引起的譜移(Δλ(PFC)=λ按壓 - λ退火),具有較長N-烷基鏈的FCn具有更顯著的PFC特性ΔλPFC=(45-54納米),那些具有較短N(yùn)-烷基鏈的FCn其ΔλPFC為23 -30nm(表1)。 |
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