Ortiz-Sanchez, Juan Manuel et al. published their research in ChemPhysChem in 2007 |CAS: 75449-26-2

The Article related to excited state double proton transfer bipyridyl derivative ab initio, Physical Organic Chemistry: Theoretical Organic Chemical Concepts, Including Quantum and Molecular Mechanical Studies and other aspects.Product Details of 75449-26-2

On June 4, 2007, Ortiz-Sanchez, Juan Manuel; Gelabert, Ricard; Moreno, Miquel; Lluch, Jose M. published an article.Product Details of 75449-26-2 The title of the article was A comparative study on the photochemistry of two bipyridyl derivatives: [2,2′-bipyridyl]-3,3′-diamine and [2,2′-bipyridyl]-3,3′-diol. And the article contained the following:

The two isoelectronic bipyridyl derivatives, [2,2′-bipyridyl]-3,3′-diamine and [2,2′-bipyridyl]-3,3′-diol, are exptl. known to undergo very different excited-state double-proton-transfer processes, which result in fluorescence quantum yields that differ by four orders of magnitude. Herein, d. functional theory (DFT), time-dependent DFT (TDDFT), and complete active space SCF (CASSCF) calculations are used to study the double-proton-transfer processes in the ground and first singlet π-π* excited state. The quantum-chem. calculations indicate (1) the existence of only one energy min. in the ground electronic state corresponding to reactants (thus avoiding the possibility of a fast fluorescent relaxation process from the photo-products region), (2) an endoergic process of the complete double proton transfer, and (3) the presence of a conical intersection in the excited intermediate region of [2,2′-bipyridyl]-3,3′-diamine. These facts explain the very low fluorescence quantum yield in [2,2′-bipyridyl]-3,3′-diamine compared to [2,2′-bipyridyl]-3,3′-diol. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Product Details of 75449-26-2

The Article related to excited state double proton transfer bipyridyl derivative ab initio, Physical Organic Chemistry: Theoretical Organic Chemical Concepts, Including Quantum and Molecular Mechanical Studies and other aspects.Product Details of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Dou, Chuandong et al. published their research in Angewandte Chemie, International Edition in 2016 |CAS: 75449-26-2

The Article related to polymer solar cell electron acceptor boron nitrogen, b-n coordination, boron, electron acceptor, polymers, solar cells, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Name: [2,2′-Bipyridine]-3,3′-diamine

Dou, Chuandong; Long, Xiaojing; Ding, Zicheng; Xie, Zhiyuan; Liu, Jun; Wang, Lixiang published an article in 2016, the title of the article was An Electron-Deficient Building Block Based on the B<-N Unit: An Electron Acceptor for All-Polymer Solar Cells.Name: [2,2′-Bipyridine]-3,3′-diamine And the article contains the following content:

A double B<-N bridged bipyridyl (BNBP) is a novel electron-deficient building block for polymer electron acceptors in all-polymer solar cells. The B<-N bridging units endow BNBP with fixed planar configuration and low-lying LUMO/HOMO energy levels. As a result, the polymer based on BNBP units (P-BNBP-T) exhibits high electron mobility, low-lying LUMO/HOMO energy levels, and strong absorbance in the visible region, which is desirable for polymer electron acceptors. Preliminary all-polymer solar cell (all-PSC) devices with P-BNBP-T as the electron acceptor and PTB7 as the electron donor exhibit a power conversion efficiency (PCE) of 3.38 %, which is among the highest values of all-PSCs with PTB7 as the electron donor. The experimental process involved the reaction of [2,2'-Bipyridine]-3,3'-diamine(cas: 75449-26-2).Name: [2,2′-Bipyridine]-3,3′-diamine

The Article related to polymer solar cell electron acceptor boron nitrogen, b-n coordination, boron, electron acceptor, polymers, solar cells, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Name: [2,2′-Bipyridine]-3,3′-diamine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Ortiz-Sanchez, Juan Manuel et al. published their research in Chemistry – A European Journal in 2010 |CAS: 75449-26-2

The Article related to bipyridyl derivative photomemory electronic structure scf calculation dft, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Radiation Chemistry and Photochemistry and other aspects.Related Products of 75449-26-2

Ortiz-Sanchez, Juan Manuel; Gelabert, Ricard; Moreno, Miquel; Lluch, Jose M.; Anglada, Josep M.; Bofill, Josep M. published an article in 2010, the title of the article was Bipyridyl derivatives as photomemory devices: A comparative electronic-structure study.Related Products of 75449-26-2 And the article contains the following content:

The two isoelectronic bipyridyl derivatives [2,2′-bipyridyl]-3,3′-diamine (BP(NH2)2) and [2,2′-bipyridyl]-3,3′-diol (BP(OH)2) are exptl. known to undergo very different excited-state double proton transfer processes that result in fluorescence quantum yields that differ by four orders of magnitude. Such differences have been theor. explained in terms of topog. features in the potential energy surface and the likely presence of conical intersections. The hypothetical hybrid compound [2,2′-bipyridyl]-3-amin-3′-ol (BP(OH)(NH2)) presents intermediate photochem. features of its “ancestors”. In this report we analyze the photochem. properties of a whole family of “dark” (not fluorescent) states that can be accessed from each bipyridyl derivative upon irradiation of light of a given wavelength and their potential application as photomemory devices. In the light of our d. functional theory (DFT), time-dependent DFT (TDDFT), and complete active space SCF (CASSCF) calculations, BP(NH2)2 is the more likely candidate to become a photomemory device. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Related Products of 75449-26-2

The Article related to bipyridyl derivative photomemory electronic structure scf calculation dft, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Radiation Chemistry and Photochemistry and other aspects.Related Products of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Ortiz-Sanchez, Juan M. et al. published their research in ChemPhysChem in 2010 |CAS: 75449-26-2

The Article related to quantum electronic study substituent effect photochem bipyridyldiol bipyridyldiamine, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Radiation Chemistry and Photochemistry and other aspects.Quality Control of [2,2′-Bipyridine]-3,3′-diamine

On December 3, 2010, Ortiz-Sanchez, Juan M.; Gelabert, Ricard; Moreno, Miquel; Lluch, Jose M. published an article.Quality Control of [2,2′-Bipyridine]-3,3′-diamine The title of the article was Modulating the Photochemistry of Bipyridylic Compounds by Symmetric Substitutions. And the article contained the following:

A quantum electronic study of the effect of substituents on (2,2′-bipyridyl)-3,3′-diol and (2,2′-bipyridyl)-3,3′-diamine is presented. A large difference in the photochem. behavior between the original and the substituted selected systems is expected. For the sake of simplicity, the study is restricted to the sym. bi-substituted compounds: fluorine, the more electroneg. atom and thus a strong σ-acceptor but also a weak π-donor group, and NO2, a strong π-acceptor substituent. Among the large set of compounds studied, two receive special attention: 5,5′-dinitro-(2,2′-bipyridyl)-3,3′-diamine and 6,6′-difluoro-(2,2′-bipyridyl)-3,3′-diol. While in the former case the nitro substitution transforms (2,2′-bipyridyl)-3,3′-diamine, previously suggested to behave as a photomemory material, into a simple fluorescent species, the latter substitution turns (2,2′-bipyridyl)-3,3′-diol into a fresh new candidate for a photomemory device. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Quality Control of [2,2′-Bipyridine]-3,3′-diamine

The Article related to quantum electronic study substituent effect photochem bipyridyldiol bipyridyldiamine, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Radiation Chemistry and Photochemistry and other aspects.Quality Control of [2,2′-Bipyridine]-3,3′-diamine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Zhao, Hong-Wu et al. published their research in Synlett in 2013 |CAS: 75449-26-2

The Article related to asym aldol addition biaryl catalyst preparation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Amides, Amidines, Imidic Esters, Hydrazides, and Hydrazonic Esters and other aspects.Synthetic Route of 75449-26-2

On October 1, 2013, Zhao, Hong-Wu; Yue, Yuan-Yuan; Li, Hai-Long; Song, Xiu-Qing; Sheng, Zhi-Hui; Yang, Zhao; Meng, Wei; Yang, Ze published an article.Synthetic Route of 75449-26-2 The title of the article was Novel axially unfixed biaryl-based water-compatible organocatalysts: design, synthesis and their asymmetric catalysis in direct aldol reactions in water. And the article contained the following:

A family of novel axially unfixed biaryl-based, water-compatible bifunctional organocatalysts I [R = 4-MeC6H4, 4-MeC6H4, 1-naphthyl; X = CH, N] were designed and synthesized for asym. catalytic direct aldol reactions in water. These organocatalysts are comprised of prolinamide, aromatic sulfonamide and biaryl motifs. Under the optimal reaction conditions, one organocatalyst in particular delivered excellent stereocontrol (up to 99% ee and 99:1 dr) in direct aldol reactions of cyclohexanone with a variety of aromatic aldehydes in water. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Synthetic Route of 75449-26-2

The Article related to asym aldol addition biaryl catalyst preparation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Amides, Amidines, Imidic Esters, Hydrazides, and Hydrazonic Esters and other aspects.Synthetic Route of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Schilf, Wojciech et al. published their research in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy in 2004 |CAS: 75449-26-2

The Article related to hydrogen bond bipyridyl derivative nmr ir crystallog, Physical Organic Chemistry: Resonance Spectra (Electron Spin, Nuclear Magnetic and Fourier Transform Nuclear Magnetic, Quadrupole, etc.) and other aspects.Electric Literature of 75449-26-2

On October 31, 2004, Schilf, Wojciech published an article.Electric Literature of 75449-26-2 The title of the article was The spectroscopic study of hydrogen bonding in some 3,3′-derivatives of 2,2′-bipyridyl. And the article contained the following:

Four 3,3′-derivatives of 2,2′-bipyridyl have been investigated by multinuclear NMR, IR and X-ray methods. In all cases the weak intramol. hydrogen bonds between exocyclic nitrogen-containing substituent and pyridine-type ring nitrogen atom were found. In contrast to the previous results the nitrogen chem. shifts of pyridine ring atom do not provide valuable information about hydrogen bond strength. The presence of intramol. hydrogen bonds was confirmed by nitrogen chem. shifts of exocyclic amino and acetamide groups, deuterium isotope effects in the solid state and IR measurements in both chloroform solution and the solid state. The X-ray structures obtained for asym. 3-amino-3′-methylamino and 3,3′-diacetamide derivatives confirmed conclusions made on the base of spectral results. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Electric Literature of 75449-26-2

The Article related to hydrogen bond bipyridyl derivative nmr ir crystallog, Physical Organic Chemistry: Resonance Spectra (Electron Spin, Nuclear Magnetic and Fourier Transform Nuclear Magnetic, Quadrupole, etc.) and other aspects.Electric Literature of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kaczmarek, Lukasz et al. published their research in Polish Journal of Chemistry in 1985 |CAS: 75449-26-2

The Article related to bipyridinediamine diazotization cyclization, bipyridinediol, furodipyridine, Heterocyclic Compounds (More Than One Hetero Atom): Fused-Ring Systems With Two Or More Hetero Atoms, No More Than One Hetero Atom Per Ring and other aspects.SDS of cas: 75449-26-2

Kaczmarek, Lukasz published an article in 1985, the title of the article was Bipyridines. Part XVII. A convenient synthesis of some bipyridinediols and furodipyridines.SDS of cas: 75449-26-2 And the article contains the following content:

A convenient method of preparation of some bipyridinediols e.g. I, II and furodipyridines III (X or X1 or X2 = N) based on diazotization of corresponding diamines in H2SO4 has been described. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).SDS of cas: 75449-26-2

The Article related to bipyridinediamine diazotization cyclization, bipyridinediol, furodipyridine, Heterocyclic Compounds (More Than One Hetero Atom): Fused-Ring Systems With Two Or More Hetero Atoms, No More Than One Hetero Atom Per Ring and other aspects.SDS of cas: 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Zahn, Stefan et al. published their research in Chemistry – A European Journal in 2009 |CAS: 75449-26-2

The Article related to allosterism electron donor receptor rotation barrier bipyridine, Physical Organic Chemistry: Stereochemistry and Stereochemical Relationships, Including Conformational Inversions and Rotational Isomerization and other aspects.Computed Properties of 75449-26-2

Zahn, Stefan; Reckien, Werner; Kirchner, Barbara; Staats, Holger; Matthey, Jens; Luetzen, Arne published an article in 2009, the title of the article was Towards allosteric receptors: adjustment of the rotation barrier of 2,2′-bipyridine derivatives.Computed Properties of 75449-26-2 And the article contains the following content:

Quantum-chem. calculations at the BP86/TZVP level of theory were performed to determine the energy differences between the syn and the anti conformers, as well as the energy barrier for the rotation of the aryl-aryl bond of 2,2′-bipyridine mols. and a number of disubstituted derivatives Substituents with hydrogen-bond donor (or electron acceptor) functions or hydrogen-bond acceptors (or electron donors) are generally found to have large effects on the difference and the barrier. Substitution with a hydrogen-bond donor (or an electron acceptor) at position 6 and 6′ leads to a decrease owing to a charge transfer from the pyridine nitrogen lone pair to the donor, which is caused by the formation of weak intramol. hydrogen bonds and/or dipolar interactions, resp. Conversely, substitution at position 4 and 4′ causes an increase in the energy barrier. Substitution with a hydrogen-bond accept- or (or an electron donor) shows the opposite behavior, which can be explained by the weak intramol. interactions. Interestingly, even very weak CH hydrogen-bond donors (electron acceptors) such as Me groups have a significant influence. This indicates the importance of such weak interactions for the structure and energetics of supramol. systems. The energy differences are mainly governed by the substituents directly attached to the bipyridine core as the introduction of sterically demanding groups in the periphery hardly influences the barriers or energy differences of the conformers. These findings are important for the design of heterotropic pos. cooperative allosteric receptors with 2,2′-bipyridines as the allosteric center. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Computed Properties of 75449-26-2

The Article related to allosterism electron donor receptor rotation barrier bipyridine, Physical Organic Chemistry: Stereochemistry and Stereochemical Relationships, Including Conformational Inversions and Rotational Isomerization and other aspects.Computed Properties of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Vela, Sonia et al. published their research in Chemical Communications (Cambridge, United Kingdom) in 2017 |CAS: 75449-26-2

The Article related to mesoscopic helical architecture chiral selfassembly porphyrin discotic, Physical Organic Chemistry: Stereochemistry and Stereochemical Relationships, Including Conformational Inversions and Rotational Isomerization and other aspects.Category: pyridine-derivatives

Vela, Sonia; Berrocal, Jose Augusto; Atienza, Carmen; Meijer, E. W.; Martin, Nazario published an article in 2017, the title of the article was Mesoscopic helical architectures via self-assembly of porphyrin-based discotic systems.Category: pyridine-derivatives And the article contains the following content:

Mesoscopic super-helixes with preferred helicity were serendipitously formed from the self-assembly of electroactive extended core discotic mols. The study at dilute concentrations reveals intramol. hydrogen-bonding and π-π stacking interactions as the driving force of the chiral self-assembly at different length scales. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Category: pyridine-derivatives

The Article related to mesoscopic helical architecture chiral selfassembly porphyrin discotic, Physical Organic Chemistry: Stereochemistry and Stereochemical Relationships, Including Conformational Inversions and Rotational Isomerization and other aspects.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

van Houtem, Michel H. C. J. et al. published their research in Chemistry – A European Journal in 2010 |CAS: 75449-26-2

The Article related to acylaminobipyridine discotic columnar liquid crystal desymmetrization self assembly, discotic columnar liquid crystal transition enthalpy acylaminobipyridine mol orientation and other aspects.Safety of [2,2′-Bipyridine]-3,3′-diamine

van Houtem, Michel H. C. J.; Martin-Rapun, Rafael; Vekemans, Jef A. J. M.; Meijer, E. W. published an article in 2010, the title of the article was Desymmetrization of 3,3′-Bis(acylamino)-2,2′-bipyridine-Based Discotics: The High Fidelity of Their Self-Assembly Behavior in the Liquid-Crystalline State and in Solution.Safety of [2,2′-Bipyridine]-3,3′-diamine And the article contains the following content:

Two novel nonsym. disk-shaped mols. 1 and 2 based on 3,3′-bis(acylamino)-2,2′-bipyridine units were synthesized by means of a statistical approach. Discotic 1 possesses six chiral dihydrocitronellyl tails and one peripheral Ph group, whereas discotic 2 possesses six linear dodecyloxy tails and one peripheral pyridyl group. Preorganization by strong intramol. hydrogen bonding and subsequent aromatic interactions induce self-assembly of the discotics. Liquid crystallinity of 1 and 2 was determined with the aid of polarized optical microscopy, differential scanning calorimetry, and X-ray diffraction. Two columnar rectangular mesophases (Colr) have been identified, whereas for C3-sym. derivatives only one Colr mesophase has been found. In solution, the molecularly dissolved state in chloroform was studied with 1H NMR spectroscopy, whereas the self-assembled state in apolar solution was examined with optical spectroscopy. These desymmetrized discotics that lack one aliphatic wedge, behave similar to the sym. parent compound To prove that the stacking behavior of discotics 1 and 2 is similar to that of reported C3-sym. derivatives, a mixing experiment of chiral 1 with C3-sym. 13 has been undertaken, and shown that they indeed belong to one type of self-assembly. This helical J-type self-assembly was further confirmed with UV-vis and photoluminescence spectroscopy. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Safety of [2,2′-Bipyridine]-3,3′-diamine

The Article related to acylaminobipyridine discotic columnar liquid crystal desymmetrization self assembly, discotic columnar liquid crystal transition enthalpy acylaminobipyridine mol orientation and other aspects.Safety of [2,2′-Bipyridine]-3,3′-diamine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem