2-[(二苯基膦基)甲基]吡啶铜(Ⅰ)配合物的结构及发光性质

合成了3个2-[(二苯基膦基)甲基]吡啶(L)铜(Ⅰ)配合物:Cu(L)2(BF4)(a)、Cu(L)(PPh3)2-(BF4)(b)和Cu(L)(POP)(BF4)(c)(POP为双[(2-二苯膦基)苯基]醚),其组成和结构分别经1HNMR、31PNMR、元素分析及晶体结构分析确证。分子中,中心铜(Ⅰ)离子均为扭曲的四面体配位构型。在除气的二氯甲烷溶液中,配合物均出现261～274nm强π-π吸收,未见明显的Cu→L电荷转移(MLCT)跃迁吸收。配合物的薄膜样品发射蓝绿光,最大发射峰分别在515、476和481nm处,光致发光效率分别为16.0%、12.9%和7.0%。以聚乙烯咔唑(PVK)与配合物b为发光层的多层电致发光器件,当电流密度为1.0×10-3A/cm2时,电致发光的电流效率为0.36cd/A,最大亮度为217cd/m2。     

绿色磷光四配位氮杂环卡宾铜(Ⅰ)配合物的合成及发光性质

为了制备发光性能优良的新型四配位氮杂环卡宾铜髣配合物,以咪唑、苯并咪唑、2-溴-5-氟-6-甲基吡啶和溴化苄为初始原料,反应生成氮杂环卡宾配体(Ph-Im-flumePy)PF_6和(Ph-BenIm-mePy)PF_6,随后卡宾配体与Cu粉及配体双(2-二苯基膦)苯醚(POP)反应,制备出2个四配位类型的氮杂环卡宾铜髣配合物[Cu(Ph-Im-flumePy)(POP)]PF_6(P1)和[Cu(Ph-BenIm-flumePy)(POP)]PF_6(P2)。通过核磁、质谱技术对产物结构进行了表征。系统研究了配合物的紫外-可见吸收光谱、发射光谱以及发光寿命等光学特性。结果表明,配合物P1和P2的最低吸收峰分别位于325和335 nm处。粉末状态下,配合物P1在514 nm处有较强的绿光发射,量子发光效率为82.6%,激发态寿命为56μs;而配合物P2的波长在516 nm处,量子发光效率为49.2%,激发态寿命为50.6μs。在PMMA(10%,w/w)膜片中,配合物P1的发射波长蓝移至505 nm处,激发态寿命为40.7μs,量子发光效率为38.0%;而配合物P2的发射波长位于508 nm处,激发态寿命为61μs,量子发光效率为44.2%。     

3-[2-(8-羟基喹啉基)-乙烯基]-N-芳基咔唑及其金属配合物的合成和光电性能研究

设计合成了3-[2-(8-羟基喹啉基)-乙烯基]-N-对甲苯基咔唑(8)和3-[2-(8-羟基喹啉基)-乙烯基]-N-对甲氧苯基咔唑(9)及其金属锌配合物(10和11), 用UV-Vis, FTIR, ESI-MS, FAB-MS, ¹H NMR和元素分析确认了化合物的结构. 热重分析实验结果表明, 金属锌配合物(10和11)有很好的热稳定性, 这对真空蒸镀制电致发光器件是有益的. 金属锌配合物组装成有机单层发光器件的结构为ITO/Organ layer(50 nm)/Al(100 nm), 其荧光发射峰分别位于592和583 nm, 为稳定的黄色光. 这两个发光器件的最大亮度分别为489和402 cd/m², 最大电流效率分别为0.41和1.81 cd/A. 电致发光研究表明, 通过化学修饰8-羟基喹啉的2-位取代基可以改变这两个金属锌配合物的电致发光性能.     

四氮杂-18-冠-6的锌/铜(Ⅱ)配合物的合成与结构

合成了1,10-二氧-4,7,13,16-四氮杂-18-C-6(以下用L代表)的硝酸锌和硝酸铜(Ⅱ)配合物.配合物Cu(L)(NO3)₂晶体属正交晶系,Pbca空间群,晶胞参数如下:a=1.5744(6)nm,b=1.2676(4)nm,c=1.8983(6)nm,V=3.789(2)nm³,Z=8,最终偏离因子R₁=0.0431,wR₂=0.0904.配合物Zn(L)(NO₃)₂晶体属正交晶系,Pnna空间群,晶胞参数a=1.61356(10)nm,b=1.32871(11)nm,c=0.86260(5)nm,V=1.8494(2)nm³,Z=4,最终偏离因子R₁=0.0718,wR₂=0.1950.冠醚环上的4个氮原子和2个氧原子都参与了配位,NO₃^-未参与配位,中心金属离子的配位数为6.红外光谱、¹H NMR和EPR谱等研究佐证了上述测定结果.Cu(L)(NO₃)₂循环伏安实验表明该配合物在-1.0～0V电压范围内,只发生Cu(Ⅱ)→Cu(Ⅰ)的还原反应,而在-1.6～0V电压范围内,发生Cu(Ⅰ)→Cu(0)的反应.     

双核铜(Ⅰ)配合物的合成、晶体结构与性质研究

本文合成了1个新的铜双核配合物[(CuI)(PMN)]2.2CH3CN(PMN=2、4-二氨基-5-氯苯基-6-乙基嘧啶),并且通过元素分析、红外、荧光、热重和单晶X-射线进行了表征。该配合物属三斜晶系,空间群P1,a=0.8100(16)nm,b=0.96950(19)nm,c=1.2049(2)nm,α=97.88(3)°,β=93.31(3)°,γ=94.14(3)°,V=0.933 8(3)nm3,Z=1,R=0.037 1。在配合物中,每个Cu(Ⅰ)离子与PMN配体的1个N原子和2个I原子配位,展示出三角几何构型。相邻的2个Cu(Ⅰ)离子通过碘原子相连形成双核铜配合物,并进一步通过氢键和I…I作用形成三维网状结构。     

含有蒽酰亚胺的铜(Ⅰ)配合物的合成、结构及光谱研究

合成了两个含蒽酰亚胺基团的新配体N-(2-(6-氨基吡啶))-9-蒽酰亚胺(L1)和N,N'-(2,6-吡啶基)-二(9-蒽酰亚胺)(L2),以及L1的铜(Ⅰ)配合物[CuL1(PPh3)2](BF4)(1),并研究了它们的结构和光谱性质.理论计算表明配体L1配位前为反式构象,配合物1的晶体结构显示L1配位后发生结构扭曲呈顺式构象,羰基氧原子与铜(Ⅰ)离子配位.光谱研究表明配体L1和配合物1都表现出蒽的特征吸收和发射峰.     

β-双酮三苯基膦混配铜（I）配合物的合成、晶体结构及荧光性质

按文献方法合成了9-丁基-3-(4,4,4-三氟-1,3-丁二酮基)咔唑(L),以L和三苯基膦为配体与硝酸铜、铜粉反应制备了具有荧光活性的铜(Ⅰ)配合物。利用红外光谱和元素分析表征了配合物的组成。通过单晶X射线衍射分析确定了该配合物的晶体结构,晶体属于单斜晶系,P21/c空间群。晶胞参数:a=1.642 8(5)nm,b=1.043 4(5)nm,c=2.800 1(5)nm,V=4.800(3)nm3,Z=4,Dc=1.313 Mg/m3,R[I>2σ(I)],R1=0.050 1,wR2=0.080 8。该配合物的分子中,β-二酮配体L的2个O原子和三苯基膦配体的P原子参与配位,Cu(Ⅰ)处于畸变四面体配位中心。初步研究了Cu(Ⅰ)配合物的发光性质,配合物在二氯甲烷溶液中有很强的荧光发射。     

自主体发光的蓝绿色磷光Ir(Ⅲ)配合物的合成及光电特性

合成了一类自主体蓝绿色磷光铱(Ⅲ)配合物(CzPhBI)₂Ir(tfmptz), (CzPhBI)₂Ir(tfmpptz)和(CzPhBI)₂Ir(fpptz)[其中CzPhBI, tfmptz, tfmpptz和fpptz分别为9-[6-(2-苯基-1-苯并咪唑基)己基]-9-咔唑、 2-(5-三氟甲基-1,2,4-三唑基)吡啶、 2-(5-[4-(三氟甲基)苯基]-1,2,3-三唑)吡啶和2-[5-(4-氟苯基)-1,2,3-三唑]吡啶]. 通过核磁共振氢谱和氟谱及元素分析确定其分子结构, 并对其光物理性能进行了研究. 利用该类配合物作为单发光层制备了器件结构为氧化铟锡(ITO)│N,N'-二苯基-N,N'-二(1-萘基)-1,1'-联苯-4,4'-二胺(NPB)(30 nm)│4,4'-N,N'-二咔唑基联苯(CBP)(15 nm)│Ir配合物(30 nm)│1,3,5-三(1-苯基-1H-苯并咪唑-2-基)苯(TBPI)(30 nm)│LiF(1 nm)│Al(100 nm)的电致发光器件, 其最大亮度为6913 cd/m², 最大发光效率达13.9 cd/A.     

一种含咔唑基哒嗪的新型金属铱电致磷光材料的合成与性能研究

合成了一种新型的以咔唑基哒嗪为配体的环金属化铱配合物Ir(pcpd)2(acac)(其中pcpd=3-(9-苯基-3-咔唑基)-6-甲基哒嗪,acac为乙酰丙酮),并以其作为发光体,制备了有机电致发光器件.其中结构为ITO/HIL001/HTL001/CBP:Ir(pcpd)2acac(12.3%)/TPBi/AlQ/LiF/Al的器件最大发光亮度19656cd/m2,最大效率14cd/A,发光峰值580nm.器件表征结果显示该配合物具有强磷光发光特性.     

含ONN席夫碱和2,2'-联吡啶的铜三元配合物的合成、晶体结构及电化学性质

合成了一个新颖的含ONN席夫碱配体N-水杨醛基-2-氨乙基苯并咪唑(HL),并在甲醇体系中合成了它的配合物ICu(L)(bipy)]ClO4(bipy为2,2'-联吡啶).利用X-射线单晶衍射法测定了配合物的晶体结构.配合物[Cu(L)(bipy)lClO4的晶体属于单斜晶系,C2/c空间群,a=2.585 5(8)nm,b=1.4355(5)nm,c=1.6242(5)nm,β=124.434(5)°,Z=8.在配合[Cu(L)(bipy)lClO4中,每个铜离子的配位数为5,分别和配体L的1个氧原子和2个氮原子及2,2'-联吡啶的2个氮原子配位,形成畸变的三角双锥配位环境.配合物[Cu(L)(bipy)]ClO4巾的氧键和π-π相互作用将配合物[Cu(L)(bipy)]ClO4连接成二维网络结构.用红外光谱、紫外-可见光谱对配合[Cu(L)(bipy)]ClO4进行了表征,并用循环伏安法对配合物进行了电化学性质的研究.     

Synthesis,Crystal Structure and Photophysical Properties of Cu（Ⅰ） Complexes Containing 2,5-Bis（pyridyl）-1,3,4-oxadiazole

Four novel Cu(Ⅰ) complexes,[Cu(o-PYO)(PPh3)2]BF4(1),[Cu(o-PYO)(DPEphos)]BF4(2),[Cu2 (o-PYO)(PPh3)3(CH3CN)](BF4)2(3) and [Cu2(o-PYO)(DPEphos)2 ](BF4)2(4) (o-PYO=2,5bis(pyridyl)-1,3,4-oxadiazole,PPh 3=triphenylphosphine,DPEphos=bis(2-(diphenylphosphanyl)phenyl)ether),have been synthesized and characterized by 1 H NMR,elemental analysis and single-crystal X-ray diffraction.The central cuprous ions in all complexes are surrounded by N and P atoms to form a distorted tetrahedral geometry,although one of the cuprous ions in complex 3 is coordinated by a PPh3 and an acetonitrile molecule due to the steric hindrance and weak coordination ability from monodentate PPh3 ligand.The UV-vis absorption spectra in CH2Cl2 show the characteristic metal-to-ligand charge transfer (MLCT) absorption bands in the region of 360-480nm.Four Cu(I) complexes exhibit yellow to orange-red phosphorescence with the emission maximum at 572,577,562 and 597nm,respectively in the solid state.     

两个双核Cu(Ⅰ)-4，4′-联吡啶配合物的合成、结构和光谱分析

采用乙醚蒸汽扩散法,由四氟合硼酸四乙腈合铜(Ⅰ)、4,4′-联吡啶、二(2-二苯基膦基)苯基醚或者三苯基膦的反应后的二氯甲烷和乙腈混合溶液中,晶化出[Cu₂(4,4′-bipy)(POP)₂(CH₃CN)₂(C₂H₅O)₂](BF₄)₂ (1)和[Cu₂(4,4′-bipy)(PPh₃)₄(CH₃CN)₂](BF₄)₂ (2)两种配合物。对它们进行了元素分析和X射线衍射单晶结构表征,同时测定了UV-Vis光谱及相应的激发态寿命。配合物1和2展示了较好的光物理特性,在275 nm紫外光的激发下,固体粉末样品的最大发射峰位分别位于527和483 nm,这归因于金属干扰的配体内部跃迁。     

A mixed oxidation state, binuclear iron complex containing an unsymmetrically coordinating ligand. A ligand-induced switch in redox behavior

Binuclear [FeIIFeIII(BMDP)(O2CPh)3](BF4) (1) was obtained by treating an acetonitrile solution of the fully reduced [FeIIFeII(BMDP)(O2CPh)(MeOH)1.5(H2O)0.5](BF4)2 with 5 equiv of benzoate and then exposing the mixture to oxygen. Examination of [FeIIFeIII(BMDP)(O2CPh)3](BF4) by X-ray crystallography reveals the localized, mixed oxidation state nature of the cation in the solid state. 1H NMR and magnetic susceptibility data for the new complex are also reported. In the absence of dioxygen and other oxidants, treatment of FeIIFeII(BMDP)(O2CPh)(MeOH)1.5(H2O)0.5](BF4)2 with excess benzoate results in the formation of [FeIIFeII(BMDP)(O2CPh)2](BF4)2, which has also been characterized by X-ray diffraction.     

Modulation of metal-metal separations in a series of Ag(I) and intensely blue photoluminescent Cu(I) NHC-bridged triangular clusters

A series of picolyl-substituted NHC-bridged triangular complexes of Ag(I) and Cu(I) were synthesized upon reaction of the corresponding ligand precursors, [Him(CH(2)py)(2)]BF(4) (1a), [Him(CH(2)py-3,4-(OMe)(2))(2)]BF(4) (1b), [Him(CH(2)py-3,5-Me(2)-4-OMe)(2)]BF(4) (1c), [Him(CH(2)py-6-COOMe)(2)]BF(4) (1d), and [H(S)im(CH(2)py)(2)]BF(4) (1e), with Ag(2)O and Cu(2)O, respectively. Complexes [Cu(3)(im(CH(2)py)(2))(3)](BF(4))(3) (2a), [Cu(3)(im(CH(2)py-3,4-(OMe)(2))(2))(3)](BF(4))(3) (2b), [Cu(3)(im(CH(2)py-3,5-Me(2)-4-OMe)(2))(3)](BF(4))(3), (2c), [Ag(3)(im(CH(2)py-3,4-(OMe)(2))(2))(3)](BF(4))(3), (3b), [Ag(3)(im(CH(2)py-3,5-Me(2)-4-OMe)(2))(3)](BF(4))(3) (3c), [Ag(3)(im(CH(2)py-6-COOMe)(2))(3)](BF(4))(3) (3d), and [Ag(3)((S)im(CH(2)py)(2))(3)](BF(4))(3) (3e) were easily prepared by this method. Complex 2e, [Cu(3)((S)im(CH(2)py)(2))(3)](BF(4))(3), was synthesized by a carbene-transfer reaction of 3e, [Ag(3)((S)im(CH(2)py)(2))(3)](BF(4))(3), with CuCl in acetonitrile. The ligand precursor 1d did not react with Cu(2)O. All complexes were fully characterized by NMR, UV-vis, and luminescence spectroscopies and high-resolution mass spectrometry. Complexes 2a-2c, 2e, and 3b-3e were additionally characterized by single-crystal X-ray diffraction. Each metal complex contains a nearly equilateral triangular M(3) core wrapped by three bridging NHC ligands. In 2a-2c and 2e, the Cu-Cu separations are short and range from 2.4907 to 2.5150 ?. In the corresponding Ag(I) system, the metal-metal separations range from 2.7226 to 2.8624 ?. The Cu(I)-containing species are intensely blue photoluminescent at room temperature both in solution and in the solid state. Upon UV excitation in CH(3)CN, complexes 2a-2c and 2e emit at 459, 427, 429, and 441 nm, whereas in the solid state, these bands move to 433, 429, 432, and 440 nm, respectively. As demonstrated by (1)H NMR spectroscopy, complexes 3b-3e are dynamic in solution and undergo a ligand dissociation process. Complexes 3b-3e are weakly photoemissive in the solid state.     

Mononuclear and binuclear sandwich copper(II) complexes with poly(pyrazolyl)borate ligands: syntheses, structures and properties

A series of Cu(II) complexes Cu(2)[micro-pz](2)[HB(pz)(3)](2) (1), Cu[H(2)B(pz)(2)](2) (2), Cu[HB(pz)(3)](2) (3), Cu[HB(pz(Me2))(3)](2) (4), Cu[B(pz)(4)](2) (5) (pz=pyrazole), have been synthesized and characterized by elemental analysis, IR, UV-vis, X-ray diffraction, thermal analysis and theoretical analysis. The IR spectra give the Cu-N vibration modes at 322, 366, 344, 387, and 380 cm(-1) in complexes 1-5, respectively. The UV spectra show all the complexes have same UV absorption at 232 nm; there is another band at 332 nm for complexes 1, 2 and 4, while for complexes 3 and 5, the bands are at 272 and 308 nm, respectively. Complex 1 has a binuclear structure in which two pyrazole ligands bridge two Cu-Tp units. In 2-5, the Cu(II) centers are coordinated with dihydrobis(pyrazolyl)borate (Bp), hydrotris(pyrazolyl)borate (Tp), hydrotris(3,5-Me2pyrazolyl)borate (Tp'), tetrakis(pyrazolyl)borate (Tkp) respectively to form a mononuclear structure. The results of thermal analysis for complexes 1-5 are discussed too.     

New phosphorescent polynuclear Cu(I) compounds based on linear and star-shaped 2-(2'-pyridyl)benzimidazolyl derivatives: syntheses, structures, luminescence, and electroluminescence

Four dinuclear and trinuclear Cu(I) complexes that contain 2-(2'-pyridyl)benzimidazolyl derivative ligands including 1,4-bis[2-(2'-pyridyl)benzimidazolyl]benzene (1,4-bmb), 1,3-bis[2-(2'-pyridyl)benzimidazolyl]benzene (1,3-bmb), 1,3,5-tris[2-(2'-pyridyl)benzimidazolyl]benzene (tmb), and 4,4'-bis[2-(2'-pyridyl)benzimidazolyl]biphenyl (bmbp) have been synthesized. The formulas of these complexes are [Cu(2)(1,4-bmb)(PPh(3))(4)][BF(4)](2) (1), [Cu(2)(1,3-bmb)(PPh(3))(4)][BF(4)](2) (2), [Cu(3)(tmb)(PPh(3))(6)][BF(4)](3) (3), and [Cu(2)(bmbp)(PPh(3))(4)][BF(4)](2) (4), respectively. The crystal structures of 2-4 have been determined by single-crystal X-ray diffraction analyses. The Cu(I) ions in the complexes have a distorted tetrahedral geometry. For 3, two structural isomers (syn and anti) resulted from two different orientations of the three 2-(2'-pyridyl)benzimidazolyl chelating units were observed in the crystal lattice. Variable-temperature (1)H NMR experiments established the presence of syn and anti isomers for 1-3 in solution which interconvert at ambient temperature. Complexes 1-4 have a weak MLCT absorption band in the 350-450 nm region and display a yellow-orange emission when irradiated by UV light. One unexpected finding is that the yellow-orange emission of complexes 1-4 has a very long decay lifetime (approximately 200 micros) at 77 K. An electroluminescent (EL) device using 4 as the emitter and PVK as the host was fabricated. However, the long decay lifetime of the copper complexes may limit their applications as phosphorescent emitters in EL devices.     

UV-Vis, NMR, and time-resolved spectroscopy analysis of photoisomerization behavior of three- and six-azobenzene-bound tris(bipyridine)cobalt complexes

The photoisomerization properties of tris(bipyridine)cobalt complexes containing six or three azobenzene moieties, namely, [Co(II)(dmAB)3](BF4)2 [dmAB = 4,4'-bis[3'-(4'-tolylazo)phenyl]-2,2'-bipyridine], [Co(III)(dmAB)3](BF4)3, [Co(II)(mAB)3](BF4)2 [mAB = 4-[3' '-(4' '-tolylazo)phenyl]-2,2'-bipyridine], and [Co(III)(dmAB)3](BF4)3, derived from the effect of gathering azobenzenes in one molecule and the effect of the cobalt(II) or cobalt(III) ion were investigated using UV-vis absorption spectroscopy, femtosecond transient spectroscopy, and 1H NMR spectroscopy. In the photostationary state of these four complexes, nearly 50% of the trans-azobenzene moieties of the Co(II) complexes were converted to the cis isomer, and nearly 10% of the trans-azobenzene moieties of the Co(III) complexes isomerized to the cis isomer, implying that the cis isomer ratio in the photostationary state upon irradiation at 365 nm is controlled not by the number of azobenzene moieties in one molecule but rather by the oxidation state of the cobalt ions. The femtosecond transient absorption spectra of the ligands and the complexes suggested that the photoexcited states of the azobenzene moieties in the Co(III) complexes were strongly deactivated by electron transfer from the azobenzene moiety to the cobalt center to form an azobenzene radical cation and a Co(II) center. The cooperation among the photochemical structural changes of six azobenzene moieties in [Co(II)(dmAB)3](BF4)2 was investigated with 1H NMR spectroscopy. The time-course change in the 1H NMR signals of the methyl protons indicated that each azobenzene moiety in [Co(II)(dmAB)3](BF4)2 isomerized to a cis isomer with a random probability of 50% and without interactions among the azobenzene moieties.     

Neutral copper(I) phosphorescent complexes from their ionic counterparts with 2-(2'-quinolyl)benzimidazole and phosphine mixed ligands

Neutral mononuclear Cu(I) complexes and their counterparts with counterion, i.e. Cu(qbm)(PPh(3))(2), Cu(qbm)(DPEphos), [Cu(Hqbm)(PPh(3))(2)](BF(4)) and [Cu(Hqbm)(DPEphos)](BF(4)), where Hqbm = 2-(2'-quinolyl)benzimidazole, DPEphos = bis[2-(diphenylphosphino)phenyl]ether, have been synthesized and characterized by X-ray structure analyses. All of the four complexes in solid state exhibit a strong phosphorescence band in the orange spectral region at room temperature. The photophysical properties of these complexes in both methylene chloride solution and poly(methyl methacrylate) film have been studied. Compared to the related cationic complexes, the neutral ones show blue-shifted emissions and longer lifetimes that can be attributed to the additional ligand-centered π-π* transition beside traditional metal-to-ligand charge-transfer (MLCT). By doping these complexes in N-(4-(carbazol-9-yl)phenyl)-3,6-bis(carbazol-9-yl) carbazole (TCCz), multilayer organic light-emitting diodes (OLEDs) were fabricated with the device structure of ITO/PEDOT/TCCz: Cu(I) (10 wt%)/BCP/Alq(3)/LiF/Al. The neutral complex Cu(qbm)(DPEphos) exhibits a higher current efficiency, up to 8.87 cd A(-1), than that (5.58 cd A(-1)) of its counterpart [Cu(Hqbm)(DPEphos)](BF(4)).     

A phosphorescent copper(I) complex: synthesis, characterization, photophysical property, and oxygen-sensing behavior

In this paper, we report the synthesis, crystal structure, photophysical properties, and electronic nature of a phosphorescent Cu(I) complex of [Cu(Phen-Np)(POP)]BF4, where Phen-Np and POP stand for 2-(naphthalen-1-yl)-1H-imidazo[4,5-f][1,10]phenanthroline and bis(2-(diphenylphosphanyl)phenyl) ether, respectively. [Cu(Phen-Np)(POP)]BF4 renders a yellow phosphorescence peaking at 545 nm, with a long excited state lifetime of 4.69 μs. Density functional calculation reveals that the emission comes from a triplet metal-to-ligand-charge-transfer excited state. We electrospun composite nanofibers of [Cu(Phen-Np)(POP)]BF4 and polystyrene (PS), hoping to explore the possibility of using the composite nanofibers as an oxygen sensing material. The finally obtained samples with average diameter of ～300 nm exhibit a maximum sensitivity of 7.2 towards molecular oxygen with short response time of 7s due to the large surface-area-to-volume ratio of nanofibrous membranes. No photobleaching is detected in these samples.     

Bis(triazacyclohexane) sandwich complexes of (Cu(I))(2), Cu(II) and Zn(II): complexes with cuprophilic attraction between two cationic copper(I) leading to unusual reactivity with dioxygen

As the first 1st-row transition metal complexes having six tertiary amine donor groups, bis(triazacyclohexane) sandwich complexes [L2M](BF4)2 (L = benzyl- or p-fluorobenzyl-triazacyclohexane, M = Cu or Zn) have been obtained by the protonolysis of Et2Zn in the presence of L or by reaction of [Cu(MeCN)4](BF4) with L in CH2Cl2 and subsequent air oxidation via an unprecedented Cu(I)(2) sandwich complex containing a short Cu-Cu contact.