荧光分光光度法测定黄芪口服液中黄芪甲甙的研究

利用在硫酸条件下香草醛与黄芪甲甙的荧光反应测定黄芪口服液中的黄芪甲甙，黄芪甲甙与香草醛反应产物的最大激发波长为λｅｘ＝３６８ｎｍ，最大发射波长λｅｍ４３５ｎｍ。黄芪甲甙在０．０－３０．０ｍｇ／Ｌ范围呈良好的线性关系，最低检出限为０．３μｇ／ｍＬ，测定样品的回收率为９６．７２％－１０３．３０％。     

荧光法直接测定环境中邻羟基苯甲酸和苯酚混合物的含量

本文研究了用荧光分光度法测定环境水中苯酚和邻羟基苯甲酸的含量碘在ＰＨ〉１１时直接测定邻羟基苯甲酸的含量,波长为λｅｘ／λｅｍ＝２８９／３３８ｎｍ,检出 为３．４ｎｇ／ｍＬ,线性范围０－６．０μｇ／ｍＬ。在ＰＨ＝６,波长为λｅｘ／λｅｍ＝２７０／２９７ｎｍ测得苯酚含量,检出限为４．０ｎｇ／ｍＬ,线性范围在０－０．８５μｇ／ｍＬ,回收率为９８－１０１％,,结果满意。     

水杨醛水杨酰腙荧光分光光度法测定铍的研究

研究了水杨醛不杨酰腙与荧光反应的最佳条件,确定在ｐＨ５．２醋酸－醋酸钠缓冲溶液中形成荧光配合物λｅｘ／λｅｍ＝３７０／４５０ｎｍ,建立了新的荧光测定铍的方法。本测定方法的线性范围为０－１８０ｐｐｂ,检出国３．２ｐｐｂ,相对标准偏差为３．２９％,考察了３０余种共存组分的干扰情况,应用地于矿泉水及硫酸钡样品中痕量铍的测定,结果令人满意。     

5′-硝基-水杨基荧光酮-溴化十六烷基 三甲胺荧光猝灭法测定微量锆

本文基于Ｚｒ（Ⅳ）－５′－硝基－水杨基荧光酮（５′－Ｎ－ＳＡＦ）－溴化十六烷基三甲铵（ＣＴＭＡＢ）体系的荧光猝灭效应,提出一种测定微量锆的新荧光分析方法。在０．８～１．２ｍｏｌ／Ｌ的Ｈ２ＳＯ４介质中,在ＣＴＭＡＢ存在下,锆与５－Ｎ－ＳＡＦ生成组成比为１∶４的橙红色络合物。该体系存在两个激发峰,其激发波长分别为λｅｘ１＝４７５ｎｍ,λｅｘ２＝５０５ｎｍ,发射波长λｅｍ＝５２５ｎｍ。锆（Ⅳ）浓度在２．０～８０μｇ／Ｌ呈良好线性关系,检出限为２．０μｇ／Ｌ。本法灵敏度高,选择性好,用于铝合金中微量锆的测定,获得满意结果。     

浅埋泥炭中的木栓质体的荧光光度术研究

对滇西镇安盆地浅埋泥炭中的木栓质体进行了较详细的研究。研究表明木栓质体是稳定组分中最不稳定的，它可以被氧化分解，导致结构和光学性质的变化，尤其是后者的变化显著，未氧化的木栓质体的荧光光谱颜色为绿色，Ｉ５４６介于１．５－２．０之间，荧光光谱呈单峰状；λｍａｘ介于４８０－５１０ｎｍ，Ｑ６５０／５００介于０．１２－０．２６畔滤宽１５０ｎｍ，但是，被氧化，分解的木栓质体则发黄色或黄褐色的荧光，Ｉ５４６减小     

荧光法直接测定环境水中痕量苯酚

研究了荧光分光光度通过控制酸度直接测定环境水中苯酚的新方法。在pH＝1时，直接测定苯酚的含量，波长为λex／λem＝270／297nm，检出限为4．0g/mL，线性范围为0－3．2μg/mL。回收率为99％－101％。     

2—溴甲基萘荧光和室温磷光性质研究

研究了２－溴甲基萘（２－ＢｒＭＮ）的荧光及磷光性质。２－溴甲基萘是一种优良的荧光试剂,λｅｘ／λｅｍ＝２７４／３３４ｎｍ,其浓度在１．０×１０＾－６～１．２×１０＾－４ｍｏｌ·Ｌ＾－１范围内与荧光强度呈良好的线性关系,相关系数ｒ＝０．９９９,最低检测限为４．７×１０＾－８ｍｏｌ·Ｌ＾－１。以β－环糊精（β－ＣＤ）作保护剂和１,２－二溴丙烷（ＤＢＰ）为重原子微扰剂的２－ＢｒＭＮ／β－ＣＤ／ＤＢＰ体系     

有机抽提对泥炭中的木栓质体荧光光谱特性的影响

对泥炭中的木栓质体及泥炭有机抽提残渣中的木栓质进行了荧光（光谱）对比研究，研究发现有机抽提对泥炭中的木栓质体的荧光（光谱）性影响很大，有机抽提前泥炭中的木栓质体发鲜艳的黄绿至绿色荧光：λｍａｘ＝４７０～５２０ｎｍ；Ｑ６５０／５００＝０．１０～０．５４。有机抽提后泥炭中的木栓质体则发暗黄色橙黄色荧光：λｍａｘ＝６０５～６６０ｎｍ，Ｑ６５０／５００＝１．８５～４．０９，有机抽提使木栓质体的荧光强度（Ｉ     

荧光偏振法测定荧光素的荧光寿命的研究

用荧光偏振法测定荧光素的荧光寿命的灵敏度和准确度较高。在荧光素钠荧光强度最强时－激发波长４９０ｎｍ，发射波长５１５ｎｍ、ｐＨ值８．５、溶液浓度１．６×１０＾－５ｍｏｌ／Ｌ，测定荧光素钠溶液的荧光偏振度，测定不同温度时荧光素钠溶液的粘度，再根据Ｐｅｒｒｉｎ公式，求出荧光素钠的荧光寿命。用荧光偏振法测得荧光素钠荧光寿命为３．４ｎｓ、ｐ＜０．０２，与文献值符合良好，结果令人满意。     

泥炭,软褐煤中的芳香烃的荧光特性

对滇西镇安盆地泥炭、软褐煤氯仿沥青“Ａ”中的芳香烃进行了较详细的荧光光度术研究。在蓝光激发下，初始态芳香烃发绿色荧光，接着迅速转变为黄色，进而转变为橙黄色或黄橙色，其Ⅰ_（５４６）很大，介于１２．５０─６０．２０之间，远大于泥炭、软褐煤中的稳定组分的相应值。Ⅰ_（５４６）呈快速负变化；初始态芳香烃荧光光谱为单峰状，λ_（ｍａｘ）为５１０─５４５ｎｍ，总体在５２０─２５ｎｍ，Ｑ_（６５０／５００）为０．３５─１．０６，总体为０．４５─０．５５。随激发时间增长，光谱变为双峰状，λ_（ｍａｘ）及Ｑ_（６５０／５００）均随激发时间增长而出现先增大后减小的变化趋势。     

血浆和组织中皮质酮的荧光测定法

皮质酮是肾上腺皮质激素之一。本文试验研究了用荧光分光光度法测定小哺乳动物血浆和组织中皮质酮含量的方法。方法的线性范围为０．０１－０．２４μｇ／ｍＬ，标准回收率平均为９６．０％，相对标准偏差为４．２％。本法具有快速，准确和灵敏度特点，能同时运用于血浆或肾上腺组织中皮质酮的测定。     

Green synthesis of garlic oil nanoemulsion using ultrasonication technique and its mechanism of antifungal action against Penicillium italicum

Penicillium italicum (P. italicum) can cause significant economic loss of fruits and vegetables. Although garlic oil (GO) is an effective antimicrobial agent, the unstability and hydrophobicity limit its use as an environmentally friendly alternative to the conventional antibiotics against P. italicum. In this study, we focused on the fabrication and characterization of a functional GO nanoemulsion (NE) using ultrasonic technique and revealed the antifungal mechanism of the GO NE on P. italicum based on morphological, structural and molecular analyses. The optimal hydrophilic lipophilic balance (HLB) value determined for GO was 14 through the combination of Tween 80 and Span 80. Then the Box-Benhnken Design (BBD) was applied to produce the GO NE and the effects of different fabrication parameters on the particle size were evaluated. The optimal GO NE was selected with the GO concentration of 5.5%, the Smix concentration of 10%, the ultrasonic time of 5 min and the power of 50%. This GO NE had the smallest particle size of 52.27 nm, the best antifungal effect and the most stability. Furthermore, the antifungal mechanism of the GO NE on P. italicum was evaluated by extracellular conductivity, micro-Raman spectra, fluorescence imaging and scanning electron microscopy (SEM) imaging. The results presented that the GO NE retained the antifungal active ingredients. The fungal cell structure and morphology were malformed after treated with the GO NE and the lipids, nucleic acids and protein of P. italicum were destructed. Finally, the optimal GO NE was applied in vivo and P. italicum in citrus was successfully inhibited. It indicated that the optimal GO NE had the better antifungal activity against P. italicum than the pure GO. Besides, the minimum inhibitory concentration (MIC) of GO after preparing into the NE was changed from 3.7% to 0.01265% with about 300 times improvement of bioavailability. Therefore, the synthetic GO NE which promoted the bioavailability of GO was recommended as a promising alternative to inhibit P. italicum in vegetables and fruits.     

一种嘧啶铱（Ⅲ）配合物的结构及光电性质研究

合成了一种铱配合物（DFPPM=2-（2,4-二氟苯基）嘧啶,acac=乙酰丙酮）,利用 X 射线单晶衍射仪测定了该化合物的晶体结构。利用紫外-可见吸收光谱、发射光谱对其光物理性质进行研究。结果表明：（DFPPM）₂ Ir（acac）的单晶结构属于三斜晶系,P-1空间群,晶胞参数a=14.444 4（7）nm,b=18.047 9（10）nm,c=19.220 0（9）nm,α=113.115（5）°;,β=90.453（4）°;,γ=90.989（4）°;,V=4 607.0（4）nm³。（DFPPM）₂ Ir（acac）在二氯甲烷溶液中的发射峰为 496 nm。以（DFPPM）₂ Ir（acac）为客体材料,制备了结构为ITO/NPB（40 nm）/CBP：（DFPPM）₂Ir（acac）（质量分数10%,30 nm）/TPBi（15 nm）/Alq₃（50 nm）/Mg：Ag（150 nm,10：1）/Ag（10 nm）的器件,器件的发射峰位于494 nm,最大亮度达到21 400 cd/m²,最大电流效率为12.0 cd/A,最大功率效率为 5.4 lm/W。     

荧光染料掺杂的高效率、高亮度白色有机电致发光器件

制备了结构为 ITO/NPB（30 nm）/Rubrene（0.2 nm）/CBP：Bczvbi（8 nm,x%）/Bphen（30 nm）/Cs₂CO₃：Ag₂O（2 nm,20%）/Al（100 nm）的器件。研究了Bczvbi掺杂浓度（x=5,10,15）对白光器件性能的影响。综合利用发光层中主客体之间的能量转移和空穴阻挡层的空穴阻挡特性,得到了高效率、高亮度的白色有机电致发光器件。当Bczvbi的掺杂质量分数为10%时,器件的效率和亮度都为最大。驱动电压为7 V时,最大电流效率为4.61 cd/A;驱动电压为9 V时,最大亮度为21 240 cd/m²。当驱动电压从4 V增加到9 V时,色坐标从（0.36,0.38）变化为（0.27,0.29）,均处于白光区域。     

All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop

We demonstrate a highly sensitive temperature sensor based on a stress-induced high-birefringence-fiber Sagnac loop that uses a Nd-doped-fiber amplified spontaneous emission source. Relative temperature sensing is done in the spectral domain by shifts of a resonant wavelength lambda(r) and absolute temperature sensing by changes in separation between resonances Dlambda . The measured relative change of these parameters with temperature in the range 15-110 degrees C, is (1/lambda(r))(deltalambda(r)/deltaT) = -(1/Dlambda)(deltaDlambda/delta T) approximately (1/Dn)(delta Dn/deltaT)(-0.94 +/- 0.02) x 10(-3)/K, with measured fiber birefringence Dn = 8 x 10(-4) . This gives a wavelength-shift sensitivity of -1.00 nm/K at 1.065 microm and a resonance separation sensitivity of 0.006 nm/K for Dlambda = 6.8 nm . This telemetric point sensor has a loop length of 80 m, an operational bandwidth of more than 50 nm, and a temperature accuracy of better than 1 degrees C.     

超高阈值Pick-off反射镜的研制

 采用水中抛光技术抛制了90mm×60mm×10 mm的K₉玻璃基片,表面粗糙度达1nm。在APS1504镀膜机上,摸索了电子束蒸发镀膜的最佳工艺条件,较稳定地在该超光滑玻璃表面上镀制了对波长1054 nm、入射角45°、反射率R≥99.5%的反射膜。膜层的抗激光损伤阈值可达26 J/cm²(1054nm, 1ns),镀膜后该玻璃基片反射波前可达l /10(p-v),最终制备了超高阈值Pick-off反射镜。     

Theoretical study on the lasing plasmon of a split ring for label-free detection of single molecules and single nanoparticles

This paper reports the plasmonic lasing of a split ring filled with gain material in water. The lasing mode(1500 nm)is far from the pump mode(980 nm), which can depress the detection noise from the pump light. The laser intensities of the two modes simultaneously increase by more than 10~3 in amplitude, which can intensify the absorption efficiency of the pumping light and enhance the plasmonic lasing. The plasmonic lasing is a sensitive sensor. When a single protein nanoparticle(n = 1.5, r = 1.25 nm) is trapped in the gap of the split ring, the lasing spectrum moves by 0.031 nm, which is much larger than the detection limit of 10~(-5) nm. Moreover, the lasing intensity is also very sensitive to the trapped nanoparticle. It reduces to less than 1/600 when a protein nanoparticle(n = 1.5, r = 1.25 nm) is trapped in the gap.     

钙铝镁合金阴极对WOLED器件性能的影响

采用Ca/Al/Mg合金作为器件的阴极,基于红绿/蓝双发光层制作了6种白色磷光OLED器件,器件结构为ITO/MoO₃ (30 nm)/NPB (40 nm)/mCP:Firpic (8%,40 nm)/CBP:R-4B (2%):Ir(ppy)₃ (14%,5 nm)/TPBi (10 nm)/Alq₃(40 nm)/Ca:Al:Mg (x%,100 nm) (x=0,5,10,15,20,25)。通过改变Mg的掺杂比例,研究了不同比例的Ca/Al/Mg合金阴极对器件性能的影响。结果表明:Mg质量分数为15%的Ca/Al/Mg阴极具有良好的电子注入特性,有效改善了器件的发光特性,最大发光亮度可达1 504 cd/m²,效率达到最大值14.3 cd/A,色坐标接近(0.46, 0.42)。     

基于顶发射有机发光二极管的二阶微腔长度性能研究

在玻璃衬底生长金属铝作为不透明阳极,制备了结构为Al(100 nm)/TAPC(x nm)/TCTA(10 nm)/TCTA:Ir(ppy)3(10%,25 nm)/TPBi(30 nm)/LiF(2 nm)/Al(1 nm)/Ag(20 nm)/Alq3(y nm)作为顶发射的有机发光器件,其中x为30、130、160、170和180,y为20、40、60和80,研究了器件的二阶腔长及出光耦合性能。实验表明,通过改变空穴传输层的厚度,使器件微腔长度处于第二阶微腔效应增强区,可以提高器件的光电性能。同时当光输出耦合层厚度发生改变时,半透明阴极的光线穿透率与反射率发生改变,从而有效改善器件的光电性能。当微腔长度为230 nm、光输出耦合厚度为80 nm时,器件具有最佳的光电性能,并且光谱的角度稳定性强。器件最大亮度、电流效率和功率效率分别达到25 960 cd/m2、19.1 cd/A和16.01 lm/W。     

梯度掺杂体异质结对有机太阳能电池光电转换效率的影响

基于传统的体异质结有机太阳能电池结构, 对结构中的混合层改用梯度掺杂的方法, 在AM1.5, 100 mW/cm²光照下, 使得器件的短路电流由原来的7.72 mA/cm²提高到了9.18 mA/cm², 相应的光电转换效率提高了25%. 器件性能的提升归因于梯度掺杂体系的引入使得体异质结混合层中同一材料分子之间形成了较好的连续网络结构, 降低了器件的串联电阻, 提高了电极对载流子的收集效率, 从而提高了器件的光电转换效率. 关键词： 有机太阳能电池 体异质结 梯度掺杂