以2,2'-联吡啶化合物作为配体,金属钌(Ⅱ)作为受体原子,合成了两种具有不同共轭体系的联吡啶钌(Ⅱ)光敏配合物;并利用红外光谱(IR)和核磁共振氢谱(1HNMR)对各中间产物和光敏配合物的结构进行了表征。研究了这两种光敏配合物电化学...以2,2'-联吡啶化合物作为配体,金属钌(Ⅱ)作为受体原子,合成了两种具有不同共轭体系的联吡啶钌(Ⅱ)光敏配合物;并利用红外光谱(IR)和核磁共振氢谱(1HNMR)对各中间产物和光敏配合物的结构进行了表征。研究了这两种光敏配合物电化学及光电性能:两者在可见光区的最大吸收波长分别为539 nm和566nm;两者的带隙计算值分别为1.70 e V和1.55 e V;将两种光敏配合物应用于染料敏化太阳能电池(DSSCs),在100 m W·cm-2(AM1.5)模拟太阳光的照射下,光电转换效率分别达到8.79%和10.16%。展开更多
The aim of this study was to assess the strength of any association between sensitization to ‘ new’ fragrance compounds and sensitization to Compositae, fragrance mix, Myroxylon pereirae resin and colophonium, respe...The aim of this study was to assess the strength of any association between sensitization to ‘ new’ fragrance compounds and sensitization to Compositae, fragrance mix, Myroxylon pereirae resin and colophonium, respectively. Consecutive eczema patients were tested with a series of essential oils and selected fragrance compounds and another series of oxidized terpenes in connectionwith European multicentre fragrance projects. Contact allergy to either series was frequently detected, in 5% of 318 and 4.6% of 262 persons tested, and both had a statistically significant association with Compositae, colophonium and fragrance mix sensitization. The individual results indicated that simultaneously occurring positive reactions to essential oils, colophonium and Compositae were based on cross- reactivity rather than concomitant sensitization. Thus, all patients with positive reaction to the rare fragrance sensitizer β - caryophyllene had positive colophonium reactions, and cross- reactivity between essential oils and Compositae was related to the Compositae plant extracts of the Compositae mix and not the pure sesquiterpene lactones of the standard series. The implication is that Compositae mix and colophonium may be markers of fragrance allergy, which is important to know when assessing the relevance of positive reactions to Compositae plant extracts and colophonium.展开更多
文摘以2,2'-联吡啶化合物作为配体,金属钌(Ⅱ)作为受体原子,合成了两种具有不同共轭体系的联吡啶钌(Ⅱ)光敏配合物;并利用红外光谱(IR)和核磁共振氢谱(1HNMR)对各中间产物和光敏配合物的结构进行了表征。研究了这两种光敏配合物电化学及光电性能:两者在可见光区的最大吸收波长分别为539 nm和566nm;两者的带隙计算值分别为1.70 e V和1.55 e V;将两种光敏配合物应用于染料敏化太阳能电池(DSSCs),在100 m W·cm-2(AM1.5)模拟太阳光的照射下,光电转换效率分别达到8.79%和10.16%。
文摘The aim of this study was to assess the strength of any association between sensitization to ‘ new’ fragrance compounds and sensitization to Compositae, fragrance mix, Myroxylon pereirae resin and colophonium, respectively. Consecutive eczema patients were tested with a series of essential oils and selected fragrance compounds and another series of oxidized terpenes in connectionwith European multicentre fragrance projects. Contact allergy to either series was frequently detected, in 5% of 318 and 4.6% of 262 persons tested, and both had a statistically significant association with Compositae, colophonium and fragrance mix sensitization. The individual results indicated that simultaneously occurring positive reactions to essential oils, colophonium and Compositae were based on cross- reactivity rather than concomitant sensitization. Thus, all patients with positive reaction to the rare fragrance sensitizer β - caryophyllene had positive colophonium reactions, and cross- reactivity between essential oils and Compositae was related to the Compositae plant extracts of the Compositae mix and not the pure sesquiterpene lactones of the standard series. The implication is that Compositae mix and colophonium may be markers of fragrance allergy, which is important to know when assessing the relevance of positive reactions to Compositae plant extracts and colophonium.