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。     

环糊精诱导室温Ling光法中两种新型简便快速的防氧方法

在环糊精诱导室温Ｌｉｎｇ光法中除氧技术是重要的实验条件。本文首次成功地建立了在反应体系中以Ｚｎ（ｓ）＋ＨＣｌ产生Ｈ２和Ｎａ２ＣＯ３＋ＨＣｌ产生ＣＯ２作除氧剂，α－氯代萘作模型化合物的ＣＤ－ＲＴＰ法。     

不除氧条件下喹啉的环糊精诱导室温燐光性质

不除氧条件下，在含２０μＬ二溴烷（ＤＢＥ）的１０ｍＬ体系中，喹啉就能产生强而稳定的环糊精诱导室温燐光（ＣＤ－ＲＴＰ）信号，最大λｅｘ／λｅｍ＝２７６／４９６ｎｍ，喹啉浓度在２．０×１０－６～４．０×０１０－４ｍｏｌ／Ｌ范围内与ＲＴＰ信号呈良好的线性关系，检测限２．０×１０－７ｍｏｌ／Ｌ。由于所用重原子微扰剂ＤＢＥ的量很少，本发光体系仅均匀地呈轻微的雾状，而无明显沉淀，使测量精度明显改善。实验还发现，Ｎａ２ＳＯ３化学除氧可使体系ＲＴＰ强度稍有增加，而通氮除氧反而因ＤＢＥ的挥发损失使体系的ＲＴＰ强度明显降低。     

胶束增稳室温燐光法中化学除氧技术的研究

简便、快速的Na_2SO_3化学除氧技术改善了胶束增稳室温燐光法(MS-RTP)通氮除氧过程费时、繁冗的操作。本文对化学除氧MS-RTP的各种影响条件做了较详细的研究。实验表明,除了SDS、TINO_3、Na_2SO_3用量及温度等因素外,pH对RTP强度和除氧时间也有显著的影响。本文对前人工作作了补充和完善,并对化学除氧机理提出了不同的认识。文中对国产SDS进行了提纯。在荧光光度计上建立了化学除氧MS-RTP法。     

环己烷存在下环糊精诱导a-溴代萘室温燐光

微量环己烷存在下,β-环糊精能诱导α-溴代萘发射强的室温燐光.发光光谱、燐光寿命和荧光偏振的实验证实了β-环糊精一环已烷一α-溴代萘三元包络物的形成.测定了三元包络物的表观形成常数,讨论了环已烷对β-环糊精诱导α-溴代萘室温燐光的影响机制.     

一种新的重原子微扰剂氯代叔丁烷在亚硫酸钠化学除氧环糊精诱导室温燐光法中的应用研究

以氯代叔丁烷作重原子微扰剂采用亚硫酸钠化学除氧技术建立了菲、7,8-苯并喹啉、2-溴代萘在环糊精介质中的室温光分析法。通过对比平衡时间和第三组分的浓度对于β-环糊精／光体／氯代叔丁烷和β-环糊精／光体／叔丁醇两种体系中光的光强度、光寿命的不同影响,探讨了氯代叔丁烷和叔丁醇诱导产生室温光机理的差异。     

不除氧条件下喹啉的环糊精诱导室温磷光性质

不除氧条件下，在含２０μＬ二溴乙烷（ＤＢＥ）的１０ｍＬ体系中，喹啉就能产生强而稳定的环糊精诱导室温磷光（ＣＤ－ＲＴＰ）信号，最大λｅｘ／λｅｍ＝２７６／４９６ｎｍ，喹啉浓度在２．０×１０＾－６￣４．０×１０＾－４ｍｏｌ／Ｌ范围内与ＲＴＰ信号呈良好的线性关系，检测限２．０×１０＾－７ｍｏｌ／Ｌ。由于所用重原子微扰剂ＤＢＥ的量很少，本发光体系仅均匀地呈轻微的雾状，而无明显沉淀，使测量精度明显改善。实验     

醇对环糊精/溴代萘超分子组合体系室温燐光的影响

研究了ＣＤ／溴化萘／醇体系的室温燐光发射条件、发光特性和不同醇、不同ＣＤ的影响。认为就本质而言，这类发光体系属一种超分子组合体系。其中，ＣＤ与内含重原子的发光体借助于分子间作用力形成二元包结物；而醇则与ＣＤ端口的羟基形成氢键，其烷基链借助于疏水作用力覆盖在ＣＤ的端口，如同一种疏密不同的盖子，不仅提高了ＣＤ腔内的疏水性，增大了发光体与ＣＤ的结合常数，同时，对外部氧向ＣＤ腔内的扩散起着隔离作用，其效应如同通Ｎ２除氧过程，从而可在不除氧条件下，观察到强的室温磷光发射。由于这类流体室温■光现象，在属性上已超出原有环糊精诱导室温■光范畴，醇的作用属超分子化学中典型的分子调控作用，其主体理应不局限于环糊精，因此建议将其命名为超分子组合室温■光（Ｓｕｐｒａｍｏｌｅｃｕｌａｒ Ａｓｓｅｍｂｌｙ ＲｏｏｍＴｅｍｐｅｒａｔｕｒｅＰｈｏｓｐｈｏｒｅｓｃｅｎｃｅ，简写为 ＳＭ－ＲＴＰ）。     

用化学除氧技术以1,2-二溴乙烷作重原子微扰剂-β-环糊精诱导室温燐光法测定4种痕量多环芳烃

本文首次将亚硫酸钠化学除氧技术应用于β－环糊精诱导室温燐光（β－CD－RTP）法中，除氧简便快速（1～1．5min），测定了痕量二氢苊、芴、菲、7，8－苯并喹啉。1，2－二溴乙烷作重原子微扰剂，其用量减少到每10mL中5μL，体系基本澄清，pH≈6．8，分析特性优于通氮除氧技术所得结果。     

α-溴代萘的无保护性介质流体室温燐光特性

含α－溴代萘（ａ－ＢｒＮｐ）的水溶液仅以Ｎａ２ＳＯ３作化学除氧剂，在仪器光源的照射下，即能很快触发α－ＢｒＮｐ强而稳定的室温光（ＲＴＰ）信号。体系ＲＴＰ性质和所需光诱导的时间对有机试剂的存在及其种类和用量极为敏感。０．５％（Ｖ／Ｖ）乙腈或丙酮的存在所需光照时间短，ＲＴＰ强度高。α－ＢｒＮｐ浓度分别在 １．０ × １０－６～ ２． ４ × １０－５ ｍｏｌ／Ｌ和 ４． ０ × １０－７～ ２． ０ × １０－５ｍｏｌ／Ｌ范围内与 ＲＴＰ强度呈良好线性关系，检出限分别为 ３，８ × １０－８ ｍｏｌ／Ｌ和 ６．５ × １０－８ ｍｏｌ／Ｌ。     

不除氧条件下4-溴联苯的透明环糊精诱导室温燐光体系

利用４－溴联苯内含重原子的特性，通过外加有机溶剂对４－溴联苯的增溶作用和γ－ＣＤ腔的保护性作用，在不除氧条件下首次获得有分析意义的透明ＣＤ－ＲＴＰ体系，该体系对４－溴联苯的检测限为３．０×１０－７ｍｏｌ／Ｌ。     

H-Bonding Room Temperature Phosphorescence Materials via Facile Preparation for Water-Stimulated Photoluminescent Ink

Pure organic room-temperature phosphorescence (RTP) materials built upon noncovalent interactions have attracted much attention because of their high efficiency, long lifetime, and stimulus-responsive behavior. However, there are limited reports of noncovalent RTP materials because of the lack of specific design principles and clear mechanisms. Here, we report on a noncovalent material prepared via facile grinding that can emit fluorescence and RTP emission differing from their components’ photoluminescent behavior. Exciplex can be formed during the preparation process to act as the minimum emission unit. We found that H-bonds in the RTP system provide restriction to nonradiative transition but also enhance energy transformation and energy level degeneracy in the system. Moreover, water-stimulated photoluminescent ink is produced from the materials to achieve double-encryption application with good resolution.     

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.     

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.     

激光诱导时间分辨光谱技术研究胶束体系中荧蒽的室温燐光行为

在胶束体系中 光衰减符合一级指数衰减公式Ｐｔ＝Ｐｏｅ－ｔ／ｒ，作者以激光诱导时间分辨光谱技术测量了ＳＤＳ胶束中荧蒽的燐光寿命和瞬时燐光强度产。值。提出Ｐｏ可定性表示重原子效应对燐光体经Ｓ１－Ｔ１系间跃迁几率的影响．而ｔ值表示三线态失活几率大小，即反映了胶束对燐光体的保护作用。作者详细研究了ＴＩＮＯ３用量、ＳＤＳ用量、ｐＨ值、Ｎａ２ＳＯ３用量对上述参数的影响，以期说明胶束增稳室温燐光法中影响燐光行为的各种因素的作用本质。     

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.