β-Cyclodextrin (β-CD) can induce a-bromonaphthalene (BrN) to emit strong room temperature phosphorescence (RTP) in the presence of micro amounts of cyclohexane (c-hexane). Experiments of luminescence spectra, phosph...β-Cyclodextrin (β-CD) can induce a-bromonaphthalene (BrN) to emit strong room temperature phosphorescence (RTP) in the presence of micro amounts of cyclohexane (c-hexane). Experiments of luminescence spectra, phosphorescence lifetime and fluorescence polarization prove the formation of c-hexane/β-CD/BrN ternary inclusion complex. The apparent formation constant of the ternary inclusion complex was determined and the effect mechanism of c-hexane on the RTP of BrN induced by β-CD is discussed.展开更多
In this paper, we report the investigation of the interaction between room temperature phosphorescence(RTP) probe, α bromonaphthalene( α BrN), and a series of cholate surfactants using RTP spectroscopy. It was found...In this paper, we report the investigation of the interaction between room temperature phosphorescence(RTP) probe, α bromonaphthalene( α BrN), and a series of cholate surfactants using RTP spectroscopy. It was found that intense RTP of α bromonaphthalene can only be induced in aqueous deoxycholate sodium(NaDC) solution. This observation showed that the interior structure of NaDC aggregate was more rigid and efficient in shielding the excited state of α BrN from oxygen quenching. The experiments suggested that the more chiral separation capability of NaDC aggregate of could be due to its more rigid interior structure.展开更多
首次将杂环分子十氢喹啉（decahydroquinoline,DHQ）引入β-环糊精（β-cyclodextrin,β-CD）诱导α-溴代萘（α-bromonaphthalene,α-BrN）室温磷光（room temperature phosphorescence,RTP）的体系中,由于DHQ和β-CD及α-BrN形成三元...首次将杂环分子十氢喹啉（decahydroquinoline,DHQ）引入β-环糊精（β-cyclodextrin,β-CD）诱导α-溴代萘（α-bromonaphthalene,α-BrN）室温磷光（room temperature phosphorescence,RTP）的体系中,由于DHQ和β-CD及α-BrN形成三元包络物,不经除氧就可观察到强而稳定的RTP信号。实验证实,孤对电子、氢键封盖作用和微晶的二次刚性化作用是DHQ存在下β-CD诱导α-BrN产生强而稳定的RTP的关键因素。在优化实验条件下,体系的RTP强度与α-BrN浓度在1.0×10^-6～3.5×10^-5mol.L^-1范围内呈良好线性关系（r=0.9960）,检出限为6.25×10^-9mol.L^-1。该方法用于合成样中α-BrN的测定,回收率为90%～105%,相对标准偏差（RSD）为2.8%～6.5%（n=5）,结果满意。展开更多
文摘β-Cyclodextrin (β-CD) can induce a-bromonaphthalene (BrN) to emit strong room temperature phosphorescence (RTP) in the presence of micro amounts of cyclohexane (c-hexane). Experiments of luminescence spectra, phosphorescence lifetime and fluorescence polarization prove the formation of c-hexane/β-CD/BrN ternary inclusion complex. The apparent formation constant of the ternary inclusion complex was determined and the effect mechanism of c-hexane on the RTP of BrN induced by β-CD is discussed.
文摘In this paper, we report the investigation of the interaction between room temperature phosphorescence(RTP) probe, α bromonaphthalene( α BrN), and a series of cholate surfactants using RTP spectroscopy. It was found that intense RTP of α bromonaphthalene can only be induced in aqueous deoxycholate sodium(NaDC) solution. This observation showed that the interior structure of NaDC aggregate was more rigid and efficient in shielding the excited state of α BrN from oxygen quenching. The experiments suggested that the more chiral separation capability of NaDC aggregate of could be due to its more rigid interior structure.
文摘首次将杂环分子十氢喹啉（decahydroquinoline,DHQ）引入β-环糊精（β-cyclodextrin,β-CD）诱导α-溴代萘（α-bromonaphthalene,α-BrN）室温磷光（room temperature phosphorescence,RTP）的体系中,由于DHQ和β-CD及α-BrN形成三元包络物,不经除氧就可观察到强而稳定的RTP信号。实验证实,孤对电子、氢键封盖作用和微晶的二次刚性化作用是DHQ存在下β-CD诱导α-BrN产生强而稳定的RTP的关键因素。在优化实验条件下,体系的RTP强度与α-BrN浓度在1.0×10^-6～3.5×10^-5mol.L^-1范围内呈良好线性关系（r=0.9960）,检出限为6.25×10^-9mol.L^-1。该方法用于合成样中α-BrN的测定,回收率为90%～105%,相对标准偏差（RSD）为2.8%～6.5%（n=5）,结果满意。
