Rozprawy doktorskie: „Pyrazole Based Ligand”

1

Ainooson, Michael Kojo. "Binuclear late transition metal complexes with pyrazole based compartmental ligands: Scaffolds for cooperative organometallic transformations". Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2014. http://hdl.handle.net/11858/00-1735-0000-0023-98FC-E.

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Olson, Michael David. "Pyrazolyl based ligands in transition metal complexes". Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27610.

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Several uninegative/ multidentate pyrazolyl based ligands were synthesized [eg. HBPZ₃₋, HBpz”₃₋, MeGapz₃₋/ MeGapz” ₃₋, H2BpZ₂₋/ Me2Bpz₂₋/ Me2GapZ₂₋/ Me2Gapz"₂₋/ Me₂Gapz(OCH₂CH₂NH₂)⁻Me₂Gapz(OCH₂CH₂CH=CH₂)⁻ ; pz pyrazolyl/ pz" = 3, 5 dimethylpyrazolyl]. These ligands were reacted with the sterically hindered metal complex, HBpz*₃MCl (M = Co, Ni; pz* = 3-iPr-4-Br-pyrazolyl) and the mixed-ligand transition metal complexes of general formulae, HBpz*₃ML, were isolated. The X-ray crystal structure of one such complex, HBpz*₃Nipz"₃BH was determined showing a near octahedral arrangement of ligands about the nickel centre. The electronic spectra of the nickel complexes were recorded and compared to predicted transitions. The electronic spectra of the four coordinate nickel complex, HBpz*₃NiCl, fit a d⁸, tetrahedral, ligand field model. The six coordinate complexes, HBpz*₃NiL (L = HBPZ₃, HBpz"₃, MeGapz₃, MeGapz”₃), fit a d⁸, octahedral, ligand field model. The unsymmetrical pyrazolylgallate ligands were reacted with the rhodium dimer [Rh(CO)₂CI]₂ to give the square planar complexes, LRh(CO) [L = Me2Gapz(OCH₂CH₂NH₂), Me₂Gapz(OCH₂CH₂CH=CH₂)]. These rhodium[I] complexes appeared to undergo oxidative additions of Mel, allylbromide and I₂. Furthermore these rhodium[I] complexes appeared to bind the small gas molecules, CO and ethene. A number of heterobimetallic complexes, with direct metal-metal bonds, were prepared and isolated from the reaction of the molybdenum anion, HBpz"₃(CO)₃MO⁻ with the transition metal halides, [CuPPb₃Cl]₄, SnR₃Cl (R = Me, Ph) and GePh₃Cl.
Science, Faculty of
Chemistry, Department of
Graduate

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Movahed, Hazel Haghighi. "Coordination chemistry and crystal engineering with new polydentate pyrazole-based ligands". Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522425.

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ORBISAGLIA, SERENA. "From pyrazole- to imidazole-based N-donor Ligands: Coordination Chemistry and Applications of New Late Transition Metals Complexes with Scorpionates, Poly(pyrazolyl)alkanes and NHCs". Doctoral thesis, Università degli Studi di Camerino, 2014. http://hdl.handle.net/11581/401839.

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The nature of ligands coordinated to the metal ion mostly determines the properties of the inorganic, organometallic or bioinorganic model compounds. The pyrazole is one of the most studied heterocyclic aromatic compounds in coordination chemistry as single ligand or incorporated in polidentate ligands, such as in poly(pyrazolyl)borates (â€˜scorpionates'), poly(pyrazolyl)alkanes, etc. The great versatility of the pyrazole allows the formation of several ligands with different functionalizations, which mainly influence the geometry and nuclearity of the diverse coordination complexes afforded by the reaction of the pyrazole-based chelating ligands and a metal ion. Another of the most studied heterocyclic aromatic compounds in coordination chemistry is an analogue of pyrazole with two non-adjacent nitrogen atoms, the imidazole, which represents the main structure of the most common and studied N-Heterocyclic carbenes (NHCs), in particular the imidazolâ€2â€ylidenes. These general informations arouse curiosity in main features and reactivity, synthesis and coordination modes, potential and ensured applications of various N-donor ligands, such as poly(pyrazolyl)borates or scorpionates, their isoelectronic and isosteric neutral analogues poly(pyrazolyl)alkanes and N-heterocyclic carbenes, presented, thus, in detail, in Chapter 1. The focus on the electronic and steric properties, the coordinating behaviour and several applications of scorpionates metal complexes, the state-of-art on coordination chemistry and reactivity of the poly(pyrazolyl)alkanes derivatives, the advantages of NHCs over phosphines, including ease of handling, minimal toxicity and powerful electron-donating properties, as enhanced stability of their transition metal complexes, which lead to the synthesis of highly active derivatives in homogeneous catalysis, anticipate the research work of this thesis on the nitrogen pyrazole- and imidazole-based ligands and their organometallic compounds. Beginning from Chapter 2, which describes the aims of the research work, all the chapters are divided in four sub-chapters. In the first sub-chapter differently halogen substituted bis- and tris-(pyrazolyl)borate ligands (BpBr3, TpBr3 and TpiPr,4Br) are compared in terms of electron-donor character through their interactions with various ruthenium(II) arene dimers, as also through electrochemical studies. Interestingly, an unexpected dinuclear ionic compound accounted for by its low thermodynamic stability, confirmed by theoretical calculations at the DFT level, due to steric reasons. The second sub-chapter is centered on the synthesis, characterization and crystal structure of the complexes of the second-lowest steric hindrance scorpionate ligand, TpTn, towards CuI, CuII, ZnII and CdII acceptors. A remarkable coordinative aspect of this ligand is pointed out, as well as the thermal and air stability of the relative complexes, confirmed by thermogravimetric and differential thermal analysis (TGA-DTA). By contrast, the interaction between TpTn and PtI2 proceeded through ligand decomposition, affording a monomeric complex. In the third sub-chapter, the varying, different stoichiometries and the N,N-chelating coordination modes of the bis(pyrazolyl)methanes, in particular of the two indazolyl-based regio-isomeric ligands, L1, bis(1H-indazol-1-yl)methane, and L2, bis(2H-indazol-2-yl)methane, toward XI group metal centers are studied. The synthesis and full characterization of analogous adducts of both regio-isomers allow a systematic comparison of their structural and spectral features, depending on the regio-isomeric ligand and counter-ion used, and the reaction conditions employed. The synthesis and characterization of a new series of stable, cationic gold(I/III) NHC complexes, as well as their catalytic activity in five well-established organic gold-mediated transformations, performed at the University of Strasbourg, under guidance of Director of Research Pierre Braunstein and coworkers (Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Universita'© de Strasbourg, France) is described in the fourth sub-chapter. Interestingly, various attempts to synthesize gold(III) NHC bis- or tris-pyridine complexes, as also the comparative behaviour of NHCs respect to phosphine ligands, are presented. Going further on the thesis structure, all the general procedures and experimental data are reported in Chapter 3, while the discussion and elaboration of the results are described in Chapter 4. Concluding remarks and future perspectives are discussed in Chapter 5, whereas all the references and some notes are given in Chapter 6. In Annexes section, the Curriculum Vitae, the List of Pubblications and the Contributions to Congresses are presented.

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Perlepe, Panagiota. "Magnetic and Electrically Conductive Two-Dimensional Coordination Networks Based on the Redox-Active Pyrazine Ligand". Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0227.

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Cette thèse est consacrée à la synthèse et à la caractérisation physique de nouveaux polymères de coordination bidimensionnels (2D) possédant un ordre magnétique et/ou une conductivité électrique à haute température. La présence simultanée de ces deux propriétés au sein d'un même matériau représente un formidable défi pour la synthèse de matériaux multifonctionnels utilisables dans le traitement et le stockage des données de nouvelles générations. Notre approche pour synthétiser de tels systèmes implique l'utilisation du ligand pontant organique redox-actif pyrazine, et de métaux de transition réducteurs. Le chapitre I présente quelques aspects généraux sur la chimie redox, la délocalisation des charges et la valence mixte qui sont essentiels à la compréhension des résultats expérimentaux. Les différentes approches de synthèse de polymères de coordination conducteurs et magnétiques sont également décrites. Le chapitre II donne un aperçu général des concepts fondamentaux concernant la conductivité électrique, le magnétisme et la spectroscopie d'absorption des rayons X. Le chapitre III analyse la synthèse et la caractérisation physique du composé CrCl2(pyrazine)2 présentant à la fois un ordre magnétique et une conductivité électrique. Les chapitres IV et V sont consacrés à l'étude de nouveaux composés MX2(pyrazine)2 en faisant varier M (Ti, V) et X (OSO2CH3, Br et I). L’objectif est de déterminer l’effet de la nature du centre métallique et du ligand axial sur les propriétés magnétiques et électriques. Enfin, le chapitre VI illustre comment la chimie redox post-synthétique peut entraîner une augmentation impressionnante de la température de l'ordre magnétique dans les matériaux 2D à base de pyrazine
This thesis is devoted to the synthesis and physical characterization of new two-dimensional (2D) coordination polymers that present high-temperature magnetic order and/or electrical conductivity. The simultaneous implementation of these two properties within a single material represents a formidable challenge in the synthesis of multifunctional materials for next-generation data processing and storage. Our approach to synthesize such systems involves the use of the redox-active organic bridging ligand, pyrazine, and reducing transition metals. Chapter I presents some general aspects of redox-activity, charge delocalization and mixed-valency that are crucial for the understanding of the experimental results. The different approaches for the synthesis of conducting and magnetic coordination polymers are also described. Chapter II provides a general view on the fundamental concepts regarding electrical conductivity, magnetism and X-ray absorption spectroscopy. Chapter III deals with the synthesis and extensive physical characterization of the coordination solid CrCl2(pyrazine)2, which exhibits both magnetic order and electrical conductivity. Chapters IV and V are devoted to the study of the effect of the anionic co-ligands and metal centers, respectively, in the family of MX2(pyrazine)2 (M = Cr, Ti, V and X = OSO2CH3, Br and I) coordination solids. Finally, Chapter VI illustrates how post-synthetic redox chemistry can result in an impressive enhancement of the magnetic order temperature in 2D layered pyrazine-based materials

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Paul, Tobias [Verfasser], i Nicolai [Akademischer Betreuer] Burzlaff. "Ligands and Coordination Chemistry Based on Vinyl and Alkynyl Substituted Pyrazoles / Tobias Paul. Gutachter: Nicolai Burzlaff". Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/1076120520/34.

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Feng, Min. "Multiple physical properties in the lanthanide complexes involving 2,6-di(pyrazol-1-yl)- pyridine-based tetrathiafulvalene ligands". Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S113.

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Dans ce manuscrit, le premier chapitre introduit la cible matériaux multifonctionnels, y compris les connaissances nécessaires sur les différentes propriétés physiques sélectionnées telles que le magnétisme, la luminescence, et la conductivité, ainsi des contributions précédents de nos et d'autres groupes.Dans le chapitre deux, le ligand à base de tétrathiafulvalène avec deux accepteurs dpp (L1 et L2) (TTF = tétrathiafulvalène, dpp = 2,6-di(pyrazol-1-yl)pyridine) et des complexes lanthanide correspondant sont présentés, y compris la synthèse et les caractérisations physiques: structures cristallographique, voltamétrie cyclique, le spectre d'absorption rationalisée par des calculs TD-DFT, des spectres d'émission, et les mesures d’ aimantation AC et DC. Les complexes Eu, Yb, et Er sont emissives.Dans le chapitre trois, un ligand à base de TTF avec deux sites de coordination hétéro L7 et ses deux Dy(III) complexes (C7-1 et C7-2) ont été présentés avec les caractérisations physiques similaires. Les deux complexes Dy révèlent un caractère de molécule aimant
In this manuscript, the Chapter one introduces the target multifunctional materials, including the necessary knowledge of different selected physical properties such as magnetism, luminescence, and conductivity, as well as some of the previous contributions by our and other groups. In Chapter two, the tetrathiafulvalene-based ligand with two dpp acceptors (L1 and L2) (TTF = tetrathiafulvalene, dpp = 2,6-di(pyrazol-1-yl)-pyridine) and the corresponding lanthanide complexes are presented including the synthesis and physical characterizations: single crystal structure, cyclic voltammetry, absorption spectra that rationalized by TD-DFT calculations, emission spectra, and DC and AC magnetic measurements. The complexes Eu, Yb, and Er are emissive. In the Chapter three, a TTF-based ligand with two hetero coordinating sites L7 and its two Dy(III) complexes (C7-1 and C7-2) were presented, which show multi-relaxation SMM behavior

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8

Solanki, Nayan Kumar. "The copper chemistry of substituted 2,6-Bis pyrazolyl pyridines and schiff base ligands". Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621813.

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Roberts, Thomas David. "Novel ligands based on 2,6-di(1H-pyrazol-5-yl)pyridine derivatives and applications in spin crossover and transfer hydrogenation complexes". Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/9418/.

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This thesis is an account of the synthesis of novel iron(II) and ruthenium(II) complexes using 2,6-di(1H-pyrazol-3-yl)pyridine based ligands and their efficacy as spin crossover complexes and transfer hydrogenation catalysts respectively. Chapter 1 is an introduction to the spin crossover and transfer hydrogenation detailing significant literature examples, important influencing factors and applications. Chapter 2 details the synthetic pathways towards all novel ligands used in this work, including numerous attempted pathways and problems which were overcome. Chapter 3 describes the properties of a number of iron(II) complexes made using 2,6-di(alkylpyrazol-3-yl)pyridine ligands. It is shown here that subtle steric and electronic factors about the iron(II) coordination sphere hinder spin crossover. Chapter 4 is a comparison of spin crossover properties of iron(II) complexes containing 2,6-di(1H-pyrazol-3-yl)pyridine ligands bearing a number of different substituents on different positions. The spin crossover behaviour of these complexes is rationalised based on crystal structures, powder x-ray diffraction and magnetic susceptibility measurements. Chapter 5 is an explanation of the differing magnetic susceptibilities of a number of solid solutions of the complex [FeL2]X2 (L = 2,6-di(1H-5-methylpyrazol-3-yl)pyridine). Chapter 6 shows the effectiveness of a number of ruthenium(II) pincer type complexes as catalysts for the transfer hydrogenation of acetophenone derivatives. Chapter 7 is an account of all the synthetic procedures used in this work and includes the full analysis of all novel compounds synthesised.

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Ainooson, Michael Kojo [Verfasser], Franc [Akademischer Betreuer] Meyer, Philipp [Akademischer Betreuer] Vana i Dietmar [Akademischer Betreuer] Stalke. "Binuclear late transition metal complexes with pyrazole based compartmental ligands: Scaffolds for cooperative organometallic transformations / Michael Kojo Ainooson. Gutachter: Philipp Vana ; Dietmar Stalke. Betreuer: Franc Meyer". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2014. http://d-nb.info/1074758447/34.

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Das, Animesh. "New Pyrazole- and Triazine-Based Ligands as Scaffolds for Oligonuclear Complexes: From Multiredox Stability to Heteronuclear Single Molecule Magnets". Doctoral thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-B06D-5.

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Yang, Deng-Chiang, i 楊登強. "Self-assembly, Structures and Properties of Metal-Organic Frameworks Based on Pyrazine and Coumarin Mixed Ligands". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/49417165527248905274.

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碩士
中國文化大學
應用化學研究所
98
(1) Self-assembly of lanthanide metal ions with carboxylate acid ligand Reaction of potassium salt of coumarin-3-carboxylic acid（KCCA） with M(NO3)3．nH2O (M = Gd, Dy, and Er) or MCl3．6H2O (M = Tb and Ho) at ambient temperature conditions led to the formation of 1-D coordination polymers of {[Gd(CCA)3(H2O)2 ]．2 (H2O)}n (1)、{[Tb(CCA)3(H2O)2 ]．2 (H2O)}n (2)、{[Dy(CCA)3(H2O)2 ]．2 (H2O)}n (3)、{[Ho(CCA)3(H2O)2 ]．2 (H2O)}n (4)、and {[Er(CCA)3(H2O)2 ]．2 (H2O)}n (5) . The structures, magnetism and luminescence properties of these five lanthanide complexes were studied. (2) Synthesis of coordination polymers from cadmium metal ion and pyrazine ligand Treatment of Cd(NO3)2．4H2O with 4,4’-oxydiphthalic anhydride (OBTA) and 2,3,5,6-tetra(pyridin-2-yl) pyrazine (TPPZ) in water / ethanol mixture under hydrothermal conditions, by controling the ratio of the metal and ligand, produced a 1-D coordination polymer, {[Cd(TPPZ)(H2OBTA)(H2O)‧H2O]}n (6) and 2-D network coordination polymer of {[Cd2(TPPZ)(OBTA)(H2O)]}n (7). Their structures were characterized by powder X-ray diffraction and single-crystal X-ray diffraction analyses. Their stability was examined by thermogravimetric analysis. Their photochemical properties were also studied.

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謝長志. "Pyrazole-organonitrile coupling reaction activated by Ni(II) ions and syntheses and characterization of metal complexes with N2S-containing schiff base ligand". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/61429581972511389660.

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碩士
國立彰化師範大學
化學系
97
Abstract By using the coupling reaction between pyrazole (HPz) and organic nitrile (RCN) mediated by Ni2+ ions, a series of pyrazolylamidinonickel complexes were synthesized. When four equivalent of HPz and one equivalent of [Ni(MeCN)6][X-] (X-= ClO4-, BF4- , or NO3-) were stirred in MeCN, complexes [Ni(MeCN)2(HPz)4][X-] (X-= ClO4- (1)，BF4- (5)，NO3- (9)) were obtained immediately, which serve as the intermediates for the coupling reaction. Although the isomerization of complexes 1 and 9 to complexes [Ni(HPz)2(HN=C(Me)Pz)2][X-] (X- = ClO4- (2), NO3- (10)) occurs slowly at room temperature, the coupling reaction in complex 5 does not happen without the aid of weak base NEt3. The reaction is also successfully conducted with other nitriles RCN bearing electron-donating group (R = Et, Bz). Based on the effects of counter anion on the rate of coupling reaction, solution IR, UV-vis spectroscopies, and X-ray crystal structure determination, a mechanism based on anion-mediated/hydrogen-bonding-driven proton transfer for the coupling reaction is proposed. Besides, we synthesized and characterized a new N2S organic ligand 2-(o-methylthiophenyliminomethyl)pyrrole (MeLH) (13), and tested the coordination reactivity toward transition metal ions Co2+, Co3+, Fe2+, Ni2+, and Cu2+. A series of metal complexes bearing this ligand were obtained: M2+(MeL)2 (M2+=Ni2+ (14), Cu2+ (15), Fe2+ (16), Co2+ (17)), Co3+(MeL)3 (18), and Co3+(MeL)(L) (19). Two stereo-isomers of complex 14 were gained, depending on the crystallization conditions. Complex 19 is the reaction product of complex 18 exposed under UV light. All complexes 13-19 were characterized by NMR, IR, UV-vis, EPR, EA, ESI-MS, and X-ray analyses. The properties of these complexes with MeLH ligand were also discussed in this report.

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Das, Animesh [Verfasser]. "New pyrazole- and triazine-based ligands as scaffolds for oligonuclear complexes : from multiredox stability to heteronuclear single molecule magnets / vorgelegt von Animesh Das". 2009. http://d-nb.info/1001944291/34.

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Tsai, Huei-Ru, i 蔡惠如. "Investigation of Emission Mechanism and Raman Spectra of Cyclometalated Ir(III) Complexes with Imidazolyl, Pyrazolyl, and Pyridyl-based Ligands". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/32303704268019454097.

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碩士
國立清華大學
化學系
99
We recorded the UV-vis absorption, emission and excitation spectra for complexes fac-tris(1-(4-fluorophenyl)-3-methylimidazolin -2-ylidene-C,C2') iridium(III), fac-Ir(fpmi)3, and fac-tris(1-(2,4–fluorophenyl)-3-methyl imidazolin-2-ylidene-C,C2')iridium (III), fac-Ir(dfpmi)3 and their ligands 1-(4-fluorophenyl)-3-methyl-1H-imidazol-3-ium iodide (H2fpmi+I-), 1-(2,4- difluorophenyl)-3-methyl-1H-imidazol-3-ium iodide (H2dfpmi+I-), 1-(4- fluorophenyl)-3-methyl-1H-imidazol-3-ium hexafluorophosphate (H2fpmi+PF6-) and 1-(2,4-difluorophenyl)-3-methyl-1H-imidazol-3-ium hexafluorophosphate (H2dfpmi+PF6-). Using theoretical calculations-density functional theory (DFT) and time-dependent DFT (TD-DFT), we obtained their optimized structures and assigned the emission bands at 320-440 nm and 370-500 nm to 1π-π* and 3π-π* for the ligands and complexes, respectively. For these blue-emission complexes the lowest emission bands are from 3π-π* instead of the triplet metal-ligand charge transfer state. This explains the low photoemission quantum yield for these complexes. We also recorded the Raman and IR spectra. From comparing with the results of DFT calculations, we assigned the vibrational spectra for fac-Ir(fpmi)3, fac-Ir(dfpmi)3, fac-Ir(ppz)3 and FIrpic. We assigned six Ir-ligand stretching, ν(Ir-C) and ν(Ir-C:) to Raman lines 286/303 and 332 cm-1 for fac-Ir(fpmi)3, and 283/299 and 377 cm-1 for fac-Ir(dfpmi)3, ν(Ir-N) and ν(Ir-C) to 229/243 and 270/321 cm-1 for fac-Ir(ppz)3, and ν(Ir-Npic), ν(Ir-Nph), ν(Ir-O) and ν(Ir-C) to 267, 282, 304 and 321 cm-1 for FIrpic. For fac-Ir(dfpmi)3 the ν(Ir-C:) band is blue-shifted 45 cm-1 than that in fac-Ir(fpmi)3. For FIrpic ν(Ir-N) and ν(Ir-C) are also blue-shifted than those for fac-Ir(ppy)3 showing strong Ir-ligand bonding.

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Katsiaouni, Stamatia. "Neuartige Pyrrol/Pyrazol-Bausteine für die Synthese von Hybrid-Makrozyklen, azyklischen Ligandsystemen und bimetallischen Komplexen". Doctoral thesis, 2007. http://hdl.handle.net/11858/00-1735-0000-0006-ACA0-A.

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Hsu, Cheng-Chih, i 徐丞志. "(1) High-Efficiency, Osmium(II)-Based Phosphorescent Materials: The Distinctive Photoluminescent Properties of Two Isomeric OsII Complexes Containing 2-pyridyl pyrazole Family Ligands(2)Ortho Green Fluorescence Protein Synthetic Chromophore; Excited-Sta". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/25975439453857741781.

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碩士
國立臺灣大學
化學研究所
95
part 1. A general review of 2nd and 3rd – row transition-metal complexes incorporating chelating chromophores, which serves as phosphorescent dyes for organic light-emitting diodes, will be depicted in chapter 1. Group of Chi have synthesized two monometallic and isomeric complexes 3 and 4 with the coordination of two phosphine ligands located in the trans-disposition and one CO and one hydride located opposite to the pyridyl triazolate chelate. Chapter 2 focuses on subtle differences in photophysical properties examined for isomers 3 and 4 on the basis of steady state absorption and emission, the relaxation dynamics, and temperature- dependent luminescent studies. The results, in combination with time-dependent density function theory (TDDFT) calculations, provide fundamental insights into the future design and preparation of highly efficient phosphorescent emitters. part 2. In chapter 3 the focus is mainly limited to the subject related to the photoinduced excited-state inter/intra-molecular proton transfer (ESPT) process, forming a proton-transfer isomer. Our main goal aims at bi-functional molecules possessing a proton donor group and a proton acceptor group so that ESPT takes place either intramolecularly (i.e. intrinsically) or through the assistance of the guest molecules. Futhermore, a structural isomer of the core chromophore (p-HBDI) in green fluorescence protein, o-HBDI, and as well as a new series of ortho-hydroxy analogues, is synthesized. o-HBDI possesses a seven-membered-ring hydrogen bond, from which the excited-state intramolecular proton transfer takes place, resulting in a remarkable tautomer emission of ~605 nm and be fully discussed in chapter 4.

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Liao, Chein-Hung, i 廖健宏. "Synthesis, Characterization of Aluminum and Lithium Complexes Containing Pyrazolyl-, Oxazolyl-based Sulfonamide or bis-Phenolate Ligands and Their Applications in Ring Opening Polymerization of Cyclic Esters". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/h3z5az.

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碩士
國立中興大學
化學系所
99
The pyrazolyl-, oxazolyl-based sulfonamide 71-80 or bis-phenolate 100-101 ligand precursors have been prepared. Treatment of ligand precursors with 1.1 equiv. of AlMe3 affords aluminum alkyl complexes 84-94, 102-103, with 2.1 equiv. of nBuLi affords lithium complexes 108-110. Reactions of aluminum alkyl complexes 102-103 with benzyl alcohol or 9-anthracenemethanol afford aluminum alkoxide complexes 104-107. All these compounds were characterized by NMR spectroscopy and elemental analysis. The molecular structures of complexes 88, 92, 94, 102, 107-110 were determined by single-crystal X-ray diffraction techniques. The aluminum alkyl complexes 84-94, 102-103 exhibit efficient activity in the ring-opening polymerization of ɛ-carprolactone in the presence of benzyl alcohol. The aluminium alkoxide complexes 104-107 exhibit efficient activity in the ring-opening polymerization of ɛ-carprolactone. The lithium complexes 108-110 exhibit efficient activity in the ring-opening polymerization of L-lactide in the presence of benzyl alcohol. They also exhibit both “living” and “immortal” characters

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Hsu, Cheng-Chih. "(1) High-Efficiency, Osmium(II)-Based Phosphorescent Materials: The Distinctive Photoluminescent Properties of Two Isomeric OsII Complexes Containing 2-pyridyl pyrazole Family Ligands (2)Ortho Green Fluorescence Protein Synthetic Chromophore; Excited-State Intramolecular Proton Transfer via a Seven-Membered-Ring Hydrogen-Bonding System". 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-0307200717191300.

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Prokofieva, Angelina. "Bioinspired oxidation reactions of phenols with dinuclear copper complexes". Doctoral thesis, 2007. http://hdl.handle.net/11858/00-1735-0000-000D-F12D-0.

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