四(4-氨基苯基)卟啉及其金属配合物的合成方法改进

以对硝基苯甲醛、吡咯为原料,戊酸为溶剂,经缩合反应合成得到四(4-硝基苯基)卟啉(TNPP),以此为基础经过还原得到四(4-氨基苯基)卟啉(TAPP),并进一步与金属盐反应合成得到金属配合物。利用紫外可见光谱、红外光谱、元素分析、质谱及核磁共振氢谱对卟啉及其金属配合物进行了结构表征,确定合成产物为目标产物。通过合成方法的改进,提高了四(4-氨基苯基)卟啉(TAPP)及其金属配合物的产率,产率与目前的文献值相比较从30%提高至38%,为进一步研究氨基卟啉类有机金属材料提供了新的合成思路和方法。     

四对硝基苯基卟啉和四对氨基苯基卟啉的合成

分别采用苯基卟啉硝化法(两步法)和对硝基苯甲醛直接合成法合成了四对硝基苯基卟啉(TNPP)。苯基卟啉硝化法首先采用Alder方法合成四苯基卟啉,然后以发烟硝酸为硝化试剂,将苯环对位硝化,反应产物是一硝化、二硝化、三硝化和四硝化产物的混合物,难分离,而且此路线腐蚀性强,操作困难,不宜大规模制备。对硝基苯甲醛直接合成法,以丙酸做反应溶剂,使反应活性降低,从而避免了更多的副反应,反应结束后,直接过滤即可得到四对硝基苯基卟啉,收率为22%。再将TNPP用二水合氯化亚锡在盐酸中还原得到四对氨基苯基卟啉(TAPP),还原收率为60%。IR、1H NMR、元素分析等证实产物结构。紫外可见吸收光谱和荧光光谱显示相对于四苯基卟啉,吸电子的硝基和给电子的氨基均使其Q带和B带的吸收位置红移,并使其发光位置也明显红移。     

β-硝基和β-氨基取代卟啉及其金属配合物的合成和光谱分析

本文以5, 10, 15, 20-四苯基卟啉(TPP)为原料,采用金属盐硝化法区域选择性合成了β-硝基-5, 10, 15, 20-四苯基卟啉(β-NO2-TPP)及其铜配合物。以β-硝基-5, 10, 15, 20-四苯基卟啉为原料,二氯化锡作为还原剂,氮气保护下在冰醋酸-氯仿混合溶剂中,较温和条件下制备了β-氨基-5, 10, 15, 20-四苯基卟啉(β-NH2-TPP)及铜配合物。利用MS、1H NMR、UV-Vis和IR对所合成的化合物结构进行了表征,研究了紫外和荧光光谱性质及产生单线态氧的能力。     

两种尾式卟啉及其金属钯配合物的合成与表征

合成了尾式卟啉化合物5-(2-戊烷氧基苯基)-10,15,20-三(对氯苯基)卟啉和5-(2-异戊氧基苯基)-10,15,20-三(对氯苯基)卟啉及其金属钯配合物并通过元素分析、紫外-可见光谱、红外光谱和核磁共振氢谱对这些卟啉化合物的结构进行了表征。     

5,10,15,20-四[3,5-二(癸酰氧基)苯基]卟啉及其金属配合物的合成与性质研究

通过5,10,15,20-四[3,5-二(羟基)苯基]卟啉与癸酰氯反应,合成出5,10,15,20-四[3,5-二(癸酰氧基)苯基]卟啉,并通过金属化得到该卟啉的锌、铜配合物。通过紫外-可见吸收光谱,红外光谱,核磁共振氢谱等对产物进行了表征,并且研究了卟啉的液晶性质和荧光性质。     

偶氮卟啉染料的制备及性能研究

以meso-四(4-硝基苯基)卟啉为原料经硝基还原后制得meso-四(4-氨基苯基)卟啉,meso-四(4-氨基苯基)卟啉再经重氮化后分别与2-萘酚和8-羟基喹啉发生偶合反应得到meso-四[4-(2-羟基偶氮萘基)苯基]卟啉(卟啉1)和meso-四[4-(8-羟基偶氮喹啉)苯基]卟啉(卟啉2)。利用核磁共振氢谱、IR、UV-Vis、循环伏安法等确定了目标化合物的结构、光谱特征和电化学性能。紫外-可见光光谱测试结果表明,卟啉1和卟啉2的Q带与meso-四(4-氨基苯基)卟啉相比,吸收强度明显增强,并且卟啉2与卟啉1相比,在可见光区有明显的红移现象。用循环伏安法研究了两种偶氮卟啉染料的氧化还原性质,通过计算ELUMO和EHOMO值,得出其能级结构与纳米TiO_2的导带能级相匹配。     

meso-四-(4-辛氧基-3-甲氧基苯基)卟啉及其金属配合物的合成与表征

报道了一种新型对称型卟啉化合物meso-四-(4-辛氧基-3-甲氧基苯基)卟啉(TOMPPPH2)及其金属钌、钯配合物(Ru(DMF)2TOMPPP,PdTOMPPP)的合成,并通过可见光谱,红外光谱,核磁共振氢谱和元素分析等对这些卟啉化合物的结构进行了表征。     

卟啉与金属卟啉的光电导性能研究

以苯甲醛和吡咯为原料,丙酸和硝基苯为溶剂,合成了四苯基卟啉(TPP),收率达29.8%。TPP与金属ZnCo、Mn盐合成相应的金属卟啉配合物,收率>90%。用核磁和质谱对化合物结构进行了表征。紫外-可见吸收光谱分析结果表明,TPP有强的Soret吸收带和四个Q带,形成金属卟啉后,Q带减少至两个,且Soret带红移。X射线衍射光谱分析显示,TPP和四苯基金属卟啉粉末均有较高的结晶度。分别以这些卟啉化合物为电荷产生材料,制备了功能分离型双层光电导体,并对它们的光电导性能进行了研究。结果表明,四苯基锌、钴卟啉配合物的光敏性明显优于TPP,其光敏度(E2/3)分别为11和10lx·s。     

meso－苯基四苯并卟啉锌的合成和光谱性能的研究

ｍｅｓｏ－苯基四苯并卟啉锌的合成和光谱性能的研究胡敏学，王夺元（中国科学院感光化学研究所，北京１００１０１）关键词ｍｅｓｏ－苯基四苯并卟啉，高温缩合反应，吸收光谱，振子强度，聚集作用四苯并卟啉（ＴＢＰ）及其金属配合物是一类新型的光敏性分子，其０－０跃...     

H2T(2-OH)PP和H2T(4-OC)MPP卟啉及其金属钯配合物的合成与表征

合成了两种新型尾式卟啉化合物5-(2-庚氧基苯基)-10,15,20-三(对氯苯基)卟啉[H2T(2-OH)PP]和5-(4-辛氧基苯基)-10,15,20-三(对甲苯基)卟啉[H2T(4-OC)MPP]及其金属钯配合物[PdT(2-OH)PP,PdT(4-OC)MPP],并通过元素分析、紫外-可见光谱、红外光谱和核磁共振氢谱对这些卟啉化合物的结构进行了表征。     

The synthesis and properties of meso-tetra(4-alkylamidophenyl)porphyrin liquid crystals and their Zn complexes

A series of novel, long-chain-substituted, porphyrin derivatives, meso-tetra (4-alkylamidophenyl) porphyrin ligands and their Zn complexes (alkyl = 8, 10, 12, 14, 16,18) were prepared by acylation of the amino groups of 5,10,15,20-tetra(4-aminophenyl)porphyrin by alkyl chloride. Mesomorphism was investigated by DSC, polarized optical microscopy (POM) and X-ray diffraction (XRD). Only ligands containing chains >12 carbon atoms displayed liquid crystalline behaviour, which exhibited a high phase transition temperature and a broad mesophase temperature span, Zn complexes showed no liquid crystalline behaviour. Cyclic voltammetry, luminescence spectra and surface photovoltage spectroscopy revealed that covalent linking of an alkylamido group to the tetraphenylporphyrin molecule influences, significantly, the properties of the porphyrin macrocycle.     

Self-assembly of novel tris(p-carboxyphenyl) porphyrin monomer and its copolymers with acrylamide in aqueous media

The novel porphyrin monomer 5-(4-acryloyloxylphenyl)-10,15,20-tris(4-carboxyphenyl)porphyrinate zinc(II) (ZnAOTCPP) and its corresponding sodium salt (ZnAOTCPP-Na) were synthesized. The latter compound exhibited a new band in excitation spectra due to formation of porphyrin aggregates in water, which were derived from its surface-activity when the concentration was higher than its critical association concentration (CAC). The porphyrins were copolymerized with acrylamide (AM) to prepare water-soluble copolymers with random and micro-blocky structures, which all displayed very new absorption and fluorescence emission bands in the long wavelength region compared with the porphyrin monomer. Furthermore, the micro-blocky copolymer exhibited an additional new absorption band at even longer wavelength region compared with the random copolymer. The experimental results and analysis showed that the porphyrin units in the random copolymer chains self-assembled to form porphyrin association complexes by hydrophobic association and π-π stacking interactions, and covalent restrictions of polymer chains in the micro-blocky copolymer.     

Synthesis of a porphyrinic polymer for highly efficient oxidation of arylalkanes in water

A highly stable covalent-porphyrinic framework Mn-CPF-1 was synthesized by reaction of cyanuric chloride and tetraphenylamine porphyrin (TAPP) and subsequent metallation. Mn-CPF-1 exhibits remarkable catalytic activity and stability on catalytic oxidation of arylalkanes in water under mild conditions, which is much superior to the homogeneous analog Mn-tetraphenylporphyrin (Mn-TPP) under identical conditions.     

Synthesis and spectral evaluation of some unsymmetrical mesoporphyrinic complexes

Synthesis and spectral evaluation of new zinc and copper unsymmetrical mesoporphyrinic complexes are reported. Zn(II)-5-(4-acetoxy-3-methoxyphenyl)-10,15,20- tris-(4-carboxymethylphenyl)porphyrin, Zn(II)-5-[(3,4-methylenedioxy)phenyl]-10,15,20- tris-(4-carboxymethylphenyl)porphyrin, Cu(II)-5-(4-acetoxy-3-methoxyphenyl)-10,15,20- tris-(4-carboxymethylphenyl)porphyrin and Cu(II)-5-[(3,4-methylenedioxy)phenyl]-10,15,20- tris-(4-carboxymethylphenyl)porphyrin were synthesized using microwave-assisted synthesis. The complexes were characterized by elemental analysis, FT-IR, UV-Vis, EPR and NMR spectroscopy, which fully confirmed their structure. The spectral absorption properties of the porphyrinic complexes were studied in solvents with different polarities. Fluorescence emission and singlet oxygen formation quantum yields were evaluated for the compounds under study, revealing high yields for the zinc derivatives. The copper complexes are not emissive and only display residual capacity for singlet oxygen formation.     

水体系中含卟啉基团的两亲高分子的自组装行为和性质的研究

在文中合成了两种不同的卟啉单体5-(4-acryloyloxyphenyl)-10,15,20-tris(4-carboxylphenyl)porphyrinate zinc(II)(ZnAOTCPP)和5-(4-acrylo-yloxyphenyl)-10,15,20-tris(4-methoxycarboxylphenyl)porphyrinate zinc(II)(ZnMeAOTCPP),它们分别与丙烯酰胺(Acrylamide,AM)聚合得到含有卟啉基团的两亲高分子.与对应的单体相比,含有三羧酸卟啉基团的高分子在水中形成了一个新的紫外吸收峰和一个新的荧光发射峰,而含有三羧酸甲酯卟啉基团的高分子除此之外在更长波的方向上还另外出现了一个新的紫外吸收峰和一个新的荧光发射峰.随着高分子水溶液浓度的提高,高分子中卟啉基团的光谱性质的变化趋势显示高分子在水中的自组装行为可以分为分子间缔合和分子内缔合的两种情况.此外,实验结果显示含有三羧酸甲酯卟啉基团的高分子相对于含有三羧酸卟啉基团的高分子更加有利于卟啉缔合物的形成.     

Synthesis of Zn-doped TiO2 microspheres with enhanced photovoltaic performance and application for dye-sensitized solar cells

Zn-doped TiO₂ microspheres have been synthesized by introducing a trace amount of zinc nitrate hexahydrate to the reaction system. Scanning electron microscope (SEM), field-emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) have been utilized to characterize the samples. Both surface photovoltage spectroscopy (SPS) technique based on lock-in amplifier and transient photovoltage (TPV) measurement reveal that the slight doping of Zn can promote the separation of photo-generated charges as well as restrain the recombination due to the strong interface built-in electric field and the decreasing of surface trap states. The photovoltaic parameters of dye-sensitized solar cells (DSSCs) based on Zn-doped TiO₂ are significantly better, compared to that of a cell based on undoped TiO₂. The relation between the performance of DSSCs and their photovoltaic properties is also discussed.     

Synthesis of Novel Porphyrin and its Complexes Covalently Linked to Multi-Walled Carbon Nanotubes and Study of their Spectroscopy

Novel covalent porphyrin and its complexes (Co²⁺, Zn²⁺) functionalized multi-walled carbon nanotubes (MWNTs) have been successfully synthesized by the reaction of the carboxyl on the surface of MWNTs which was synthesized to use carbon radicals generated by the thermal decomposition of azodiisobutyronitrile (AIBN) with 5-p-hydroxyphenyl-10,15,20-triphenyl-porphyrin and its complexes (Co²⁺, Zn²⁺). Three resulting nanohybrids were characterized by spectroscopy (FT-IR, Raman, and UV-vis), TGA, and TEM. The quality of porphyrin attached to the MWNTs was determined from thermogravimeric analysis (TGA) of the MWNTs, which showed a weight loss of about 60%. The Raman and absorption spectroscopy data showed that the electronic properties of modified MWNTs were mostly retained, without damaging their one-dimensional electronic properties. From fluorescence measurements, it was observed that the porphyrin and its complexes (Co²⁺, Zn²⁺) were nearly quenched by MWNTs, indicating that this covalently modified mode facilitated the effective energy or electron transfer between the excited porphyrin moiety and the extended π-system of MWNTs.     

对氯苯基卟啉-氨基酸及其锌配合物的合成和表征

为了探索氯的空间位置及不同的氨基酸对卟啉 -氨基酸化合物性能的影响 ,合成了 5 - [4-(3 -酪氨酸丙氧基 )苯基 ]- 1 0 ,1 5 ,2 0 -三 (4-氯苯基 )卟啉 ,5 - [4- (3 -组氨酸丙氧基 )苯基 ]- 1 0 ,1 5 ,2 0 -三(4-氯苯基 )卟啉 ,两种新型的尾式卟啉 -氨基酸化合物及其锌配合物 ,用元素分析 ,紫外 -可见光谱 ,红外光谱 ,核磁共振氢谱 ,质谱确证了其结构 ,并测试了其荧光光谱     

新型卟啉及其金属配合物的合成与性能

通过琥珀酰基、马来酰基和邻苯二甲酰基对四-(4-氨基苯基)卟啉进行修饰改性,合成不同结构的新型卟啉及其铜配合物。对合成的新型结构卟啉配体进行核磁共振、质谱和红外表征,对其铜配合物进行质谱表征,结果表明,所合成的化合物是目标产物。通过紫外-可见、荧光发射、热重、循环伏安法进行性质测试,计算出HOMO和LUMO能级。结果表明,新型化合物具有良好的可见光区吸收和纯红光发射光谱,热稳定性高,可以作为红光材料的备选材料。