环糊精诱导二苯甲酮敏化α－溴代萘室温磷光分析法

环糊精诱导二苯甲酮敏化α－溴代萘室温磷光分析法谢剑炜，许金钩，陈国珍，刘长松（厦门大学化学系现代分析化学研究所，厦门，３６１００５）（山西大学化学系，太原）关键词二苯甲酮，敏化室温磷光，α－溴代萘，环糊精胶束、环糊精等有序介质能有效地使能量给体和受体...     

动力学室温磷光法测定α—溴代萘

报道用动力学力学室磷光法测定了α－溴代萘（α－ＢｒＮｐ）的新方法，检出限为３．５８×１０＾－５ｍｏｌ／Ｌ相标准偏差小于１６．２％。     

胺类对α—溴代萘／β—环糊精体系流体室温磷光的影响

首次研究了不同的胺对α－溴代萘（α－ＢｒＮｐ）／β－环糊精（β－ＣＤ）体系ＲＴＰ发射的影响,发现胺能显著增强α－ＢｒＮｐ／β－ＣＤ体系的ＲＴＰ发射,ＲＴＰ强度 随着胺的烷基链的增长和支锭的增加而增加,且当胺的用量是β－ＣＤ用量的一倍时,ＲＴＰ强度最大。由此认为,胺的影响主要应归因地胺分别从β－ＣＤ的二端接近,胺的－ＮＨ２基与β－ＣＤ的－ＯＨ基形成氢键,而其烷基从ＣＤ二端折向空腔,封住了ＣＤ的上、下     

环糊精体系中4种多环芳烃敏化丁二酮室温磷光

对β－环糊精（β－ＣＤ）溶液中４种多环芳烃α－溴代萘（α－ＢｒＮ）、β－溴代萘（β－ＢｒＮ）、菲、Ｑｕ敏化丁二酮（ＢＩＡＣ）的室温磷光（ＲＴＰ）进行了研究，β－ＣＤ能有效地增强敏化磷光强度，并从三重态能量、主客体分子几何尺寸大小等方面讨论了各种因素的影响。方法的线性动态范围上限受能量受体浓度的限制，其检出限达１０＾－８ｍｏｌ／Ｌ。     

β—环糊精存在下直链脂肪醇诱导1—溴萘室温磷光光谱研究

研究了β－环糊精溶液中直链脂肪醇诱导１－溴萘的室温磷光光谱性质。结果表明，三元包络物中１－ＢｒＮ分子的磷光起初随醇中碳原子数的增加而增强，正戊醇对磷光呈现最大的敏化作用，随后从正己醇至正辛醇，磷光强度逐渐下降，测定了包络物组成和稳定常数，发现１－ＢｒＮ和Ａ：β－ＣＤ包络物的结合强度是三元包络物磷光强弱的决定性因素，并从三元包络物可能的结构解释了醇分子大小对室温磷光的影响。     

萘和正丁醇存在下β－环糊精诱导1－溴萘室温磷光的研究

萘和正丁醇存在下β－环糊精诱导１－溴萘室温磷光的研究杜新贞，张勇，黄贤智，李耀群，江云宝，陈国珍（厦门大学化学系、环境科学研究中心，厦门，３６１００５）关键词１－溴萘，β－环糊精，萘，室温磷光室温下β－环糊精（β－ＣＤ）诱导的发光现象由于其不同于胶束...     

十氢喹啉存在下β-环糊精诱导α-溴代萘的室温磷光

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。     

六氢吡啶存在下β-环糊精诱导α-溴代萘室温磷光分析

微量六氢吡啶(HHP)存在下,由于三元包络物α-溴代萘(-αB rN)/β-环糊精(-βCD)/HHP的形成,不经除氧就可观察到强而稳定的室温磷光(RTP)发射。详细研究了温度、pH值以及形成包络物的3种组分物质的浓度的变化对体系RTP的影响。在优化实验条件下,体系的RTP强度与-αB rN的浓度在2.0~20.0μmol/L范围内呈良好线性关系,α-B rN的检出限3.7×10-8mol/L。将所建方法用于合成样品中-αB rN的测定,实验结果表明该方法的加标回收率为92.4%;相对标准偏差小于1.57%(n=7)。     

一类新的流体室温磷光法——无保护介质流体室温磷光

一类新的流体室温磷光法——无保护介质流体室温磷光李隆弟赵瑜童爱军（清华大学化学系北京１０００８４）李隆弟男，５９岁，教授，从事光致发光、分子识别等领域研究及分析化学教学工作。国家自然科学基金资助项目１９９７－０６－２６收稿前文［１，２］曾报道仅以Ｎａ...     

Room Temperature Phosphorescence Optosensor for Terbium

Abstract

A solid surface room temperature phosphorescence optosensing method has been developed for the determination of terbium(III) based on the adsorption of its binary complex with 1,4-bis (l'-phenyl-3′-methyl-5′-pyrazolone-4′-) butanedione-(1,4) (BPMPBD) onto the hydrogen form of a strong cation exchange resin packed in a flow cell in an aqueous flow system. The phosphorescence intensity is a linear function of the concentration of terbium in the range of 8x10^?9 M-6x10^?7 M, and the detection limit is 3x10^?9 M terbium. The response mechanism was also studied. The present optosensor has been used for the determination of trace amounts of terbium in synthetic samples with satisfactory results.     

β-溴代萘的化学除氧环糊精诱导室温燐光法测定

本文首次成功地建立了以KI或Tl_2SO_4无机盐作重原子,Na_2SO_3作除氧剂,测定β-溴代萘的化学除氧环糊精诱导室温燐光法。该方法比以往用卤代烷烃作重原子吹氮除氧CD-RTP法操作简便。本文详细研究了化学除氧的各种影响条件及方法的适用性。实验表明,以K1作重原子的体系比TI_2SO_4体系有更高的灵敏度和更宽的条件宽容度,而且操作更为简便。目前此种方法还仅适用于含内重原子化合物的测定。     

多环芳烃芴、苊的无保护流体室温磷光性质研究

我们[1,2 ]曾报道丹磺酰氯及其衍生物在无保护性介质亦无有机溶剂存在的水溶液中能诱导出强而稳定的室温磷光 (ＲＴＰ) ,并命名为ＮＰ ＲＴＰ[37].此后 ,Ｃａｒｒｅｔｅｒｏ等[810 ]亦发现了萘唑啉、萘氧乙酸和苊溶液在无任何有序介质时的ＲＴＰ发射现象 .在已有的研究中至少有两个问题需进一步探索 :其一 ,除苊外 ,已实现ＮＰ ＲＴＰ发射的化合物都仅具双环结构 ,即萘系化合物 ,对于多环化合物是否有类似的发射特性和随环的增多是否会出现新的特性 ;其二 ,对于无水溶性取代基的多环芳烃 ,因其在水中的溶解度很小 ,所引入的有机溶剂的种类和…     

隐丹参酮和丹参酮IIA滤纸基质室温磷光法的研究

考察了隐丹参酮和丹参酮 IIA的滤纸基质室温磷光法 ( PS- RTP)特性。选择Cd( Ac) 2 作为重原子微扰剂 ,对影响这两种丹参酮类化合物发光强度的各种因素进行了详细研究。同时建立了隐丹参酮和丹参酮 IIA的 PS- RTP分析测定的新方法     

Organic Room Temperature Phosphorescence Materials for Biomedical Applications

Organic room temperature phosphorescence (RTP) materials have drawn increasing attention due to their unique features, especially the long emission lifetime for applications in biomedicine. In this review, we provide an overview of the recent developments of organic RTP materials applied in the biomedicine field. First, we introduce the basic mechanism of phosphorescence and subsequently we present various strategies of modulating the lifetime and efficiency of room temperature organic phosphorescence. Next, we summarize the progress of organic RTP materials in biological applications, including bioimaging, anti‐cancer and antibacterial therapies. Finally, we provide an outlook with regard to the challenges and future perspectives in the field.     

Stimuli-Responsive Circularly Polarized Organic Ultralong Room Temperature Phosphorescence

Purely organic materials showing room temperature phosphorescence (RTP) and ultralong RTP (OURTP) have recently attracted much attention. However, it is challenging to integrate circularly polarized luminescence (CPL) into RTP/OURTP. Here, we show a strategy to realize CPL-active OURTP (CP-OURTP) by binding an achiral phosphor group directly to the chiral center of an ester chain. Engineering of this flexible chiral chain enables efficient chirality transfer to carbazole aggregates, resulting in strong CP-OURTP with a lifetime of over 0.6 s and dissymmetry factor of 2.3×10⁻³ after the conformation regulation upon photo-activation. The realized CP-OURTP is thus stable at room temperature but can be deactivated quickly at 50 °C to CP-RTP with high CPL stability during the photo-activation/thermal-deactivation cycles. Based on this extraordinary photo/thermal-responsive and highly reversible CP-OURTP/RTP, a CPL-featured lifetime-encrypted combinational logic device has been successfully established.     

Naphthyl Substituted Impurities Induce Efficient Room Temperature Phosphorescence

Accidentally, it was found that triphenylamine (TPA) from commercial sources shows ultralong yellow-green room temperature phosphorescence (RTP) like commercial carbazole, which however disappears for lab-synthesized TPA with high purity. Herein, we for the first time identify the impurity types that cause RTP of commercial TPA, which are two N, N-diphenyl-naphthylamine isomers. Due to similar molecular polarity and very trace amount (≈0.8 ‰, molar ratio), these naphthyl substituted impurities can be easily overlooked. We further show that even at an extremely low amount (1000000 : 1, mass ratio) of impurities, RTP emission is still generated, attributed to the triplet-to-triplet energy transfer mechanism. Notably, this doping strategy is also applicable to the triphenylphosphine and benzophenone host systems, of which strong RTP emission can be activated by simply doping the corresponding naphthyl substituted analogues into them. This work therefore provides a general and efficient host/guest strategy toward high performance and diverse organic RTP materials.     

隐丹参酮和丹参酮ⅡA滤纸基质室温磷光法的研究

考察了隐丹参酮和丹参酮ⅡA的滤纸基质室温磷光法(PS-RTP)特性。选择Cd(Ac)2作为重原子微扰剂，对影响这两种丹参酮类化合物发光强度的各种因素进行了详细研究。同时建立了隐丹参酮和丹参酮ⅡA的PS-RTP分析测定的新方法。     

12种嘌呤类化合物的滤纸基质室温燐光法研究

较为详细地研究了１２种嘌呤类化合物以滤纸为基质的室温燐光（ＲＴＰ）光谱特性与分子结构的关系，以及重原子效应和酸度效应对ＲＴＰ的影响。