卟啉

At the normal state, porphyrin molecules do not have EPR signal. However, light excitation may cause a transition of porphyrin molecules from singlet to triplet. At the same time, the change from diamagnetism to paramagnetism occurred to porphyrin molecules. In this case, the two un-paired electrons are nearby each other and cause a strong interaction, giving EPH signal with sharp peak at g = 2.000. The g value increased with an increase in electron cloud density.

常态下卟啉分子没有EPR信号，在光的激发下，卟啉分子由原来的逆磁性分子变成顺磁性的激发三重态分子，这种激发三重态分子在分子轨道上具有两个未成对电子，这两个电子相距很近，彼此之间发生很强的相互作用而产生电子，它的g值随卟啉共轭体系平均电子云密度增大而变大。

At the normal state, porphyrin molecules do not have EPR signal. However, light excitation may cause a transition of porphyrin molecules from singlet to triplet. At the same time, the change from diamagnetism to paramagnetism occurred to porphyrin molecules. In this case, the two un-paired electrons are nearby each other and cause a strong interaction, giving EPR signal with sharp peak at g =2.000. The g value increased with an increase in electron cloud density.

常态下卟啉分子没有EPR信号，在光的激发下，卟啉分子由原来的逆磁性分子变成顺磁性的激发三重态分子，这种激发三重态分子在分子轨道上具有两个未成对电子，这两个电子相距很近，彼此之间发生很强的相互作用而产生电子，它的 g 值随卟啉共轭体系平均电子云密度增大而变大。

an approach divides the sonoluminescence from the sound field by using test tube with black plastics and the isotropic light trap is applied to collect sonoluminescence in the trough which irradiates hematoporphyrin out of the sound field.the results of our work suggest that ultrasonically induced cavitation produces nonequilibrium high temperature, emits shock waves, together with the cavitation energy in hematoporphyrin solution activating hematoporphyrin.

从超声空化产生的声致荧光出发，采用试管外包裹黑色塑料的方法将大量生理盐水的声致发光与其余能量形式分开，在相同条件下，使用集光球收集水槽中盐水的声致荧光，将荧光引出声场单独作用血卟啉。结果表明，水槽中盐水的空化热能、冲击波与试管中血卟啉溶液空化产生的高温、高压、冲击波等多种能量的合作用激活血卟啉。

The nitrosyl metalloporphyrin complexes were synthesized by metalloporphyrin complexe, heme and VB_(12) treating with nitric oxide.

金属卟啉配合物，血卟啉和维生素B12与NO 络合，制得了金属卟啉-NO络合物。

In THF solution, the four compounds show intensive photoluminescence and have large two-photon absorption cross section, and the TPA cross section gradually increases with increasing phenothiazine units.

3通过优化卟啉的合成方法，合成了两个以吩噻嗪齐聚物为臂的卟啉的分子，这类卟啉分子在溶液和薄膜中都具备高的荧光量子产率，有望在光子学器件中得到应用。

Reactions of 2,6-pyridinedicarboxylic acid or 2,6-dibromomethyl pyridine with 5-(4-hydroxyphenyl)-10,15,20-triphenyl porphyrin, 5-(4-aminophenyl)-10,15,20 triphenyl porphyrin gave three novel bridged diporphyrins 3-5, respectively.

通过将2，6-吡啶二羧酸或2，6-二溴甲基吡啶分别与5-(4-羟基苯基)-10，15，20-三苯基卟啉(1)和5-(4-氨基苯基)-10，15，20-三苯基卟啉(2)反应，合成了3种新型的双卟啉化合物3~5。

The pure isomers 3-(1-hydroxyethyl)-8-vinyldeuteroporphyrin Ⅸ and 3-vinyl-8-(1-hydroxyethyl)deuteroporphyrin Ⅸ were obtained from protoporphyrin Ⅸ dimethyl ester.Starting from these two acetylating compounds,eight new porphyrin derivatives were synthesized through an alkyloxy fission reaction.

以原卟啉Ⅸ二甲酯为起始原料，合成并分离得到3-(1-羟乙基)-8-乙烯基次卟啉Ⅸ（Ⅱ1）和3-乙烯基-8-(1-羟乙基)次卟啉Ⅸ（Ⅱ2）二个异构体，两者分别经酰化后与醇进行烷氧裂解反应合成了8个全新的卟啉衍生物。

In this paper, twenty novel meso-substituted porphyrins of four series were designed and synthesized by increasing the conjugation of porphyrins or introducing substituents with high fluorescence quantum yield into the meso-position of porphine, and then red OLEDs were fabricated by doping porphyrins into a suitable host using ten porphyrins compounds and their electrolumin -escence properties were tested. The main contents and results were generalized as follows:Three meso-tetrakisporphyrins 4a-c and three conjugations of porphine-triarylamine linked by styrene 10a-c were synthesized and characterized by 1H NMR, MS, UV-vis spectra and fluorescence emission spectra.

本文通过增大卟啉分子的共轭结构或将具有高荧光量子产率的基团连接到卟吩环的中位得到了四类共20个新型的卟啉化合物，并选取其中10个化合物制备有机发光器件来考察材料的电致发光性能，具体内容包括以下几个部分：设计合成了3个中位直接被三芳胺取代的卟啉化合物4a-c和3个通过苯乙烯连接的卟吩-三芳胺共轭体10a-c，通过核磁氢谱、质谱、紫外吸收光谱和荧光发射光谱表征了新化合物的结构。

The demetalation of Ni-OEP in the presence of H2 consists of two steps. The first step is hydrogenation of nickel porphyrin to nickel chlorin, and the second step is decomposition of nickel chlorin and the removal of nickel.

，也有相当一部分镍卟啉发生分解，脱除所配合的金属；镍卟啉的临氢脱金属反应过程分为两步，第一步是卟啉分子中一个吡咯环上的外环双键加氢生成镍卟酚，第二步镍卟酚分解，金属脱除。

We use AOT/iso-octane/water reverse micelles as a biological model to mimic the properties of triplet-excited-state porphyrin in the interfacial region. The amphiphilic property of compound is difficult to evaluate for different system.

用AOT／异辛烷／水反相胶束体系营造了一个多相、多界面的环境，通过对卟啉化合物三重态寿命的测量，研究了以亲水基团为端基的具有不同侧链链长的两亲卟啉化合物的界面行为，探讨了卟啉化合物的亲水疏水性质与界面环境间的相互作用，这对卟啉类光疗药物的结构优化具有帮助。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷