Spectrophotometric investigation of the copolymerization of styrene or methyl methacrylate with 1,8‐naphthalimide dyes

The copolymerization of styrene or methyl methacrylate with 1,8‐naphthalimide dyes to yield fluorescent side‐group copolymers was investigated. During copolymerization, no changes occurred in the chromophoric systems of the dyes. Colorimetrically, it was found that more that 0.90% of the dyes were chemically bonded to the polymer chain. The effect of polymer coloration was proven by appropriate coloristic characterization. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 2463–2470, 2001     

Fluorescent Hydrogel–Textile Composite Material Synthesized by Photopolymerization

A fluorescent textile sensor and its capacities to detect pH changes in aqueous solutions have been reported. A new hydrogel-cotton fabric was obtained via surface initiated photopolymerization of 2-aminoethylmethacrylate hydrochloride, with N,N′-methylene-bis-acrylamide as a crosslinker, and fluorophore and modified eosin Y and N-methyldiethanolamine as photoinitiators. The synthesis of the modified eosin Y and a new 1,8-naphtalimide used as signal units in the hydrogel composite have been described. It has been found that the concentration of the photoinitiator affects the functional properties of the composite. pH variations influence the gel structure and this is transduced into fluorescence and color changes of the material.     

Circular Dichroism and Circular Polarized Luminescence from a Green Fluorescent Protein—Initial Research for Chiroptical Emission of Biological Materials

Optical properties of a green fluorescent protein (GFP) are examined using optical absorption, circular dichroism (CD), and circular polarized luminescence (CPL) spectroscopies. The GFP has chiroptical activity and exhibits green circular polarized emission, although the g _em-factor is small. Poly(vinyl alcohol) (PVA)/GFP composite films are prepared to attempt long-term preservation of the GFP emission activity. After five years, the transparent PVA/GFP composite film still exhibits stable fluorescence that appears similar to the emission from the Aequorea jellyfish.     

荧光增白剂ER合成的改进及其分散液的制备

用苯溶解邻氰基氯苄，再与亚磷酸三乙酯进行酯化反应，合成荧光增白剂ER。改进方法与原方法相比，不仅节省了反应时间，而且酯化反应产率提高了18－23％。用合成的荧光增白剂ER制备了其水分散液。     

荧光增白剂在洗涤剂中的应用及其发展

介绍了荧光增白剂的增白机理、基本结构类型、毒理及生态安全性。荧光增白剂在洗涤剂中的典型用量为0.15%。详尽描述了荧光增白剂在洗涤剂中的作用及影响因素，并分析了国内外荧光增白剂的市场及市场发展趋势。     

无汞荧光灯用红色荧光粉的研制

针对无汞荧光灯的工作特点，研制了稀土硼酸盐红粉材料。实验表明，较好的组成式为Y0.50Gd0。45Eu0.05BO3，合成时硼酸过量15％，适宜的灼烧条件为1140℃，保温2h。粉体既有较高的发光强度，又有适宜的粒度及分散性能可满足粉浆配制要求，制得的无汞荧光灯可具有较高的转换效率。     

P-Q(卟啉-苯醌)的分子光谱研究

系统地测试了 TPP(NO_2)Cl,TPP(NH_2)Cl、TPP(NO_2)-Q 和 TPP(NH_2)-Q 的萤光发射光谱,红外光谱和核磁共振(~1H)谱,根据图谱,分别计算了各种光谱数据或进行了经验归属.确认了各种被测化合物的结构,并肯定了用作光—电转换材料的基础原料是完全可行的,为下一步工作提供了可靠的实验依据.     

紧凑型荧光灯的输入电流谐波

通过实测数据说明紧凑型荧光灯的输入电流谐波的数据分布情况。计算三相四线供电时的中线电流，根据电网允许注入的谐波电流值确定选用紧凑型荧光灯的数量，保证安全用电。     

电致发光材料9,10-二(6-叔丁基-2-萘基)蒽的合成和纯度分析

9，10-二（6-叔丁基-2-萘基）蒽是一种性能优良的小分子电致发光材料，具有熔点高，热稳定性好，发光效率高的特点．采用格氏反应VA蒽醌和6-溴-2-叔丁基萘为起始原料，合成了该化合物，并通过荧光分光光度法对产品纯度进行了定量分析．批量制备中，仅以重结晶方法进行处理，产品纯度可达到96％以上．