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Kakimoto Y, Ikemura R, Imai Y, Tohnai N, Yamazaki S, Nakata E, Takashima H. Circularly polarised luminescence from excimer emission of anthracene derivatives complexed with γ-cyclodextrin in the solid state. RSC Adv 2023; 13:1914-1922. [PMID: 36712637 PMCID: PMC9832359 DOI: 10.1039/d2ra07971b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/04/2023] [Indexed: 01/12/2023] Open
Abstract
In this study, we report circularly polarised luminescence (CPL)-active molecules that exhibit high fluorescence quantum yields in the solid state. We developed anthracene derivatives with substituents at the 9 and 10 positions, such as ethyl(anthracene-9-carbonyl)glycinate (9AnGlyEt), N-butylanthracene-9-carboxamide (9AnB), N-benzylanthracene-9-carboxamide (9AnPh), and N 9,N 10-dibutylanthracene-9,10-dicarboxamide (9,10AnB). These compounds were complexed with γ-cyclodextrin (γ-CD) in the solid state by grinding, and the fluorescence properties of the resulting γ-CD complexes were investigated. The fluorescence quantum yields were enhanced after γ-CD complexation. Among the prepared γ-CD complexes, 9AnGlyEt/γ-CD had the highest fluorescence quantum yield (Φ f = 0.35), which was enhanced up to 5.8 times after γ-CD complexation. This was probably due to the interaction between the two anthracene molecules in the γ-CD cavity, which prevented fluorescence quenching caused by aggregation of the compounds. Positive CPL of g CPL = 1.3 × 10-3 was observed for 9AnGlyEt/γ-CD based on its excimer emission.
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Affiliation(s)
- Yuna Kakimoto
- Department of Chemistry, Biology and Environmental Science, Faculty of Science, Nara Women's UniversityNara 630-8506Japan
| | - Ryoya Ikemura
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai UniversityOsaka 577-8502Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai UniversityOsaka 577-8502Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka UniversityOsaka 565-0871Japan
| | - Shoko Yamazaki
- Department of Chemistry, Nara University of EducationNara 630-8528Japan
| | - Eiji Nakata
- Institute of Advanced Energy, Kyoto UniversityKyoto 611-0011Japan
| | - Hiroshi Takashima
- Department of Chemistry, Biology and Environmental Science, Faculty of Science, Nara Women's UniversityNara 630-8506Japan
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Circularly polarized luminescence (CPL) characteristics of hydrophobic pyrene derivatives/γ-cyclodextrin (γ-CD) complexes in aqueous solution dissolved by grinding. J INCL PHENOM MACRO 2021. [DOI: 10.1007/s10847-021-01108-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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3
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Solvent-controlled intramolecular excimer emission from organosilicon derivatives of naphthalene. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Murudkar S, Mora AK, Singh PK, Bandyopadhyay T, Nath S. An ultrafast molecular rotor based ternary complex in a nanocavity: a potential “turn on” fluorescence sensor for the hydrocarbon chain. Phys Chem Chem Phys 2015; 17:5691-703. [DOI: 10.1039/c4cp04636f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Formation of a ternary complex by an ultrafast molecular rotor (UMR) with a macrocyclic cavitand has been investigated for the sensitive detection of the alkyl chain of a surfactant.
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Affiliation(s)
- Sushant Murudkar
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Aruna K. Mora
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Prabhat K. Singh
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Tusar Bandyopadhyay
- Theoretical Chemistry Section
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Sukhendu Nath
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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5
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Arora P, Joshi HC, Joshi NK, Pandey N, Pandey P, Pant S. Modulation of the fluorescence properties of 5-amino salicylic acid by triethylamine. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2013.11.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Protection of 4-Fluoroanisole from Aromatic Nucleophilic Photosubstitution by Cyclodextrins [1]. Isr J Chem 2013. [DOI: 10.1002/ijch.198500035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Bernal E, Marchena M, Sánchez F. Microheterogeneous catalysis. Molecules 2010; 15:4815-74. [PMID: 20657395 PMCID: PMC6257643 DOI: 10.3390/molecules15074815] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 06/23/2010] [Accepted: 07/05/2010] [Indexed: 12/04/2022] Open
Abstract
The catalytic effect of micelles, polymers (such as DNA, polypeptides) and nanoparticles, saturable receptors (cyclodextrins and calixarenes) and more complex systems (mixing some of the above mentioned catalysts) have been reviewed. In these microheterogeneous systems the observed changes in the rate constants have been rationalized using the Pseudophase Model. This model produces equations that can be derived from the Brönsted equation, which is the basis for a more general formulation of catalytic effects, including electrocatalysis. When, in the catalyzed reaction one of the reactants is in the excited state, the applicability (at least formally) of the Pseudophase Model occurs only in two limiting situations: the lifetime of the fluorophore and the distributions of the quencher and the probe are the main properties that define the different situations.
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Affiliation(s)
- Eva Bernal
- Department of Physical Chemistry, University of Seville, C/Profesor García González, s/n, 41012, Seville, Spain.
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Marchena M, Sanchez F. Kinetics of Photochemical Reactions under Restricted Geometry Conditions. PROGRESS IN REACTION KINETICS AND MECHANISM 2010. [DOI: 10.3184/146867809x472116] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Kinetics of ground state reactions under restricted geometry conditions have been rationalized generally taking as a basis the Pseudophase Model, whose basic hypothesis is: The distribution of the reactants between the pseudophases is at equilibrium, that is, the rate of the reaction is slow in relation to the rates of entry and exit of the reactant to and from the receptor. However, photochemical reactions are generally very rapid, so the following question emerges: is the Pseudophase Model still applicable to photochemical reactions? To answer this question has been the primary objective of this work in which photochemical reactions in micelles, polymers and cyclodextrins have been reviewed. The lifetime of the fluorophore and the distributions of the quencher and the probe are crucial properties; they must be taken into account to obtain a proper description of the behaviour of a given system. The models of Infelta, Almgren and Quina visualise different scenarios with varied combinations of these properties. It is shown that, in some cases, the Pseudophase Model holds at least formally.
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Affiliation(s)
- M. Marchena
- The Department of Physical Chemistry, University of Sevilla, C/Profesor Garcia Gonzalez s/n, 41012 Sevilla, Spain
| | - F. Sanchez
- The Department of Physical Chemistry, University of Sevilla, C/Profesor Garcia Gonzalez s/n, 41012 Sevilla, Spain
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Kannaiyan D, Imae T. pH-Dependent encapsulation of pyrene in PPI-core:PAMAM-shell dendrimers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:5282-5285. [PMID: 19397362 DOI: 10.1021/la8039847] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Core-shell dendrimers consisting of poly(propyleneimine) (PPI) dendrimer as a core and poly(amidoamine) (PAMAM) dendrons as a shell have been synthesized through the route of Michael addition reaction followed by amidation. These macromolecules were investigated their ability to solubilize a guest molecule, pyrene. The number of encapsulated pyrene molecules per dendrimer increased with pH of a solution and generation (G) of PAMAM dendron, and it reached 2.7 for PPI(G3)-core:PAMAM(G3)-shell dendrimer at pH 11. It was confirmed that the solubilized pyrene located in the hydrophobic nanocavities of the PPI dendrimer core in the dendrimer. The shrunk PAMAM dendron shell should play a role of retention fence of doped molecules.
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Affiliation(s)
- Dinakaran Kannaiyan
- Research Center for Materials Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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Hamai S. Ternary Inclusion Complexes of γ-Cyclodextrin with Resorufin and Organic Cations in Aqueous Solution. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.1527] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Neugebauer J, Jan Baerends E, Nooijen M. Vibronic structure of the permanganate absorption spectrum from time-dependent density functional calculations. J Phys Chem A 2007; 109:1168-79. [PMID: 16833427 DOI: 10.1021/jp0456990] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The UV absorption spectrum of the permanganate anion is a prototype transition-metal complex spectrum. Despite this being a simple d0 Td system, for which a beautiful spectrum with detailed vibrational structure has been available since 1967, the assignment of the second and third bands is still very controversial. The issue can be resolved only by an elucidation of the intricate vibronic structure of the spectrum. We investigate the vibronic coupling by means of linear-response time-dependent density functional calculations. By means of a diabatizing scheme that employs the transition densities obtained in the TDDFT calculations in many geometries around Re, we construct a Taylor series expansion in the normal coordinates of a diabatic potential energy matrix, coupling 24 excited states. The simulated vibronic structure is in good agreement with the experimental absorption spectrum after the adjustment of some of the calculated vertical excitation energies. The peculiar blurred vibronic structure of the second band, which is a very distinctive feature of the experimental spectrum, is fully reproduced in the calculations. It is caused by the double-well shape of the adiabatic energy surface along the Jahn-Teller active e mode of the allowed 1E state arising from the second 1T2 state, which exhibits a Jahn-Teller splitting into 1B2 and 1E states. We trace the double-well shape to an avoided crossing between two diabatic states with different orbital-excitation character. The crossing can be explained at the molecular orbital level from the Jahn-Teller splitting of the set of 7t2{3d(xy), 3d(xz), 3d(yz)} orbitals (the LUMO + 1), to which the excitations characterizing the diabatic states take place. In contrast to its character in the two well regions, at Re the 2(1)T2 state is not predominantly an excitation to the LUMO + 1, but has more HOMO - 1 --> LUMO (2e = {3d(x2-y2), 3d(z2)}) character. The changing character of the 2(1)T2 - 1E state along the e mode implies that the assignment of the experimental bands to single orbital transitions is too simplistic intrinsically. This spectrum, and notably the blurring of the vibronic structure in the second band, can be understood only from the extensive configurational mixing and vibronic coupling between the excited states. This solves the long-standing assignment problem of these bands.
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Affiliation(s)
- Johannes Neugebauer
- Theoretical Chemistry, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
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12
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He Y, Fu P, Shen X, Gao H. Cyclodextrin-based aggregates and characterization by microscopy. Micron 2007; 39:495-516. [PMID: 17706427 DOI: 10.1016/j.micron.2007.06.017] [Citation(s) in RCA: 196] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Accepted: 06/04/2007] [Indexed: 11/27/2022]
Abstract
Cyclodextrin-based aggregates have been widely investigated with microscopies such as STM, AFM, SEM, TEM, and fluorescent microscopy to obtain the direct morphology and structure of samples. In the present review, we discuss various types of cyclodextrin aggregates, that is, native and modified cyclodextrins, inclusion complexes and their aggregates of cyclodextrins, cyclodextrin rotaxanes and polyrotaxanes, cyclodextrin nanotubes and their secondary assembly, and other high-order aggregates of cyclodextrins. Especially, we focus on the use of microscopy to characterize above aggregates. The application of modern microscopy tools promotes the investigation on cyclodextrins.
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Affiliation(s)
- Yifeng He
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
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13
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Herrmann C, Neugebauer J, Presselt M, Uhlemann U, Schmitt M, Rau S, Popp J, Reiher M. The First Photoexcitation Step of Ruthenium-Based Models for Artificial Photosynthesis Highlighted by Resonance Raman Spectroscopy. J Phys Chem B 2007; 111:6078-87. [PMID: 17489631 DOI: 10.1021/jp071692h] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ruthenium-polypyridine and related complexes play an important role as models for light-harvesting antenna systems to be employed in artificial photosynthesis. In this theoretical and experimental work, the first photoexcitation step of a tetranuclear [Ru2Pd2] complex composed of two ruthenium-bipyridyl subunits and two palladium-based fragments, {[(tbbpy)2Ru(tmbi)]2[Pd(allyl)]2}2+ (tbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine, tmbi = 5,6,5',6'-tetramethyl-2,2'-bibenzimidazolate), is investigated by means of experimental and theoretical resonance Raman spectroscopy. The calculated spectra, which were obtained within the short-time approximation combined with time-dependent density functional theory (TDDFT), reproduce the experimental spectrum with excellent agreement. We also compared calculations on off-resonance Raman spectra, for which a completely different theoretical approach has to be used, to experimental ones and again found very good agreement. The [Ru2Pd2] complex represents the probably largest system for which a quantum chemical frequency analysis and a calculation of conventional Raman as well as resonance Raman spectra with reasonable basis sets have been performed. A comparison between the resonance Raman spectra of the [Ru2Pd2] complex and its mononuclear [Ru] building block [(tbbpy)2Ru(tmbi)]2+ and a normal-mode analysis reveal that the [Ru2Pd2] resonance Raman spectrum is composed uniquely from peaks arising from the [Ru] fragment. This observation and an analysis of the Kohn-Sham orbitals mainly involved in the initial electronic excitation in the TDDFT description of the [Ru2Pd2] system support the hypothesis that the initial photoexcitation step of [Ru2Pd2] is a charge-transfer excitation from the ruthenium atoms to the adjacent butyl-2,2'-bipyridine ligands.
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Affiliation(s)
- Carmen Herrmann
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
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14
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Nelsen SF, Konradsson AE, Weaver MN, Stephenson RM, Lockard JV, Zink JI, Zhao Y. Comparisons of Measured Rate Constants with Spectroscopically Determined Electron-Transfer Parameters. J Phys Chem B 2007; 111:6776-81. [PMID: 17388559 DOI: 10.1021/jp069032k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This work involves comparison of rate constants measured for an intervalence (IV) compound with electron-transfer parameters derived from its optical absorption spectrum. The temperature-dependent rate constants for the radical cation having 3-tert-butyl-2,3-diazabicyclo[2.2.2]oct-2-yl (hydrazine) charge-bearing units attached para to a tetramethylbenzene bridge (1+) were previously measured. In this study, resonance Raman is used to calculate the magnitudes of the distortions of normal modes of vibration caused by excitation into the intervalence absorption band. These data produce a vibrational reorganization energy lambdavsym of 9250 cm(-1), and averaged single-mode omegav for use in the Golden Rule equation of 697 cm(-1). Zhu-Nakamura theory has been used to calculate preexponential factors for analysis of the previously measured variable temperature optical spectra using quartic-enhanced intervalence bands to extract the total reorganization energy and the intramolecular electron-transfer rate constants for intramolecular electron transfer using electron spin resonance. In contrast to using the Golden Rule equation, separation of lambda into solvent and vibrational components is not significant for these data. The Zhu-Nakamura theory calculations produce ln(k/T) versus 1/T slopes that are consistent with the experimental data for electronic couplings that are somewhat larger than the values obtained from the optical spectra using Hush's method.
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Affiliation(s)
- Stephen F Nelsen
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706-1396, USA
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15
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16
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Balan B, Gopidas KR. Photoinduced Electron Transfer in α-Cyclodextrin-Based Supramolecular Dyads: A Free-Energy-Dependence Study. Chemistry 2006; 12:6701-10. [PMID: 16800017 DOI: 10.1002/chem.200501548] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Photoinduced electron transfer (PET) between alpha-cyclodextrin-appended pyrene (PYCD) and a few acceptor molecules was studied in aqueous solutions. The pyrene moiety in PYCD is located above the narrower rim of the alpha-CD and is fully exposed to water. The acceptors are monocyclic organic molecules and, upon dissolution in water in the presence of PYCD, a fraction of the donor-acceptor systems is present as supramolecular dyads and the remaining fraction as free molecules. Free-energy-dependence studies showed that electron transfer in the supramolecular dyads follows the Marcus equation. The donor-acceptor coupling and the reorganization energy were determined from fits of the data to the Marcus equation. The electronic coupling was found to be similar to those reported for hydrogen-bonded systems. It appears that the actual lambdaout values are somewhat lower than values calculated with the continuum model. The experimental design has also allowed, for the first time, a visual demonstration of the inverted region on the basis of the raw fluorescence lifetime data.
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Affiliation(s)
- Bijitha Balan
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, Regional Research Laboratory (CSIR), Trivandrum--695019, India
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17
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Abstract
Mixed valence in the lowest-energy metal-to-ligand charge-transfer excited state of di-(4-acetylpyridine)tetraammineruthenium(II) complexes is defined and analyzed. The excited state has two interchangeably equivalent ligands with different oxidation states. The electronic absorption band energies, selection rules, and bandwidths are analyzed quantitatively in terms of the signs and orientations of the transition dipole moments, sign and magnitude of the coupling, and resonance Raman analysis of displaced normal modes.
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Affiliation(s)
- Edward A Plummer
- Department of Chemistry and Biochemistry, University of California-Los Angeles, Los Angeles, CA 90095, USA
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18
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Starukh GN, Eremenko AM, Smirnova NP, Chuiko AA, Grigorovich AV, Doroshenko AO. Fluorescent properties of pyrene-β-cyclodextrin inclusion complexes in titanium-silica sols. COLLOID JOURNAL 2006. [DOI: 10.1134/s1061933x06020165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Abou-Zied OK. A spectroscopic study of the inclusion of azulene by beta- and gamma-cyclodextrins. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 62:245-51. [PMID: 16257721 DOI: 10.1016/j.saa.2004.12.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2004] [Revised: 12/15/2004] [Accepted: 12/17/2004] [Indexed: 05/05/2023]
Abstract
The inclusion of azulene (AZ) inside the cavities of beta-cyclodextrin (beta-CD) and gamma-cyclodextrin (gamma-CD) was studied using absorption, fluorescence and induced-circular dichroism spectroscopy. The inclusion of AZ into the cavity of beta-CD has a stoichiometry of 1:1, whereas that of AZ/gamma-CD complex is 1:2. The equilibrium constants for the formation of the two complexes were calculated to be 780+/-150 M(-1) for AZ:beta-CD and (4.5+/-0.86)x10(5) M(-2) for AZ:(gamma-CD)(2). The latter is due to a stepwise equilibrium mechanism in which a 1:1 complex is formed with a binding constant of 775 M(-1), followed by the formation of a 1:2 complex with a binding constant of 580 M(-1). The difference between the two binding constant values is slight, indicating an almost equal contribution from each of the gamma-CD molecules to the overall binding in AZ:(gamma-CD)(2). From the induced-circular dichroism spectra, the inclusion of AZ was found to be axial in AZ:beta-CD and nearly axial in AZ:(gamma-CD)(2).
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Affiliation(s)
- Osama K Abou-Zied
- Department of Chemistry, Faculty of Science, Sultan Qaboos University, PO Box 36, Al-Khodh, Postal Code 123, Muscat, Sultanate of Oman.
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Czernuszewicz RS, Fraczkiewicz G, Zareba AA. A detailed resonance Raman spectrum of Nickel(II)-substituted Pseudomonas aeruginosa azurin. Inorg Chem 2005; 44:5745-52. [PMID: 16060626 DOI: 10.1021/ic050553g] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nickel(II) and cobalt(II) derivatives of the blue copper protein Pseudomonas aeruginosa azurin have been studied by resonance Raman (RR) spectroscopy at liquid-nitrogen temperatures. Vibrational assignments for the observed RR bands of Ni(II)-azurin have been made through a study of (62)Ni-substituted azurin. A comparison of Ni(II)-azurin RR spectra with those of the wild type (Cu-containing) protein showed Ni(II)-S(Cys) stretching vibrations, nu(Ni-S)(Cys), at substantially lower frequencies (approximately 360 versus approximately 400 cm(-1), respectively), indicating that the Ni(II)-S(Cys) bond is much weaker than the corresponding Cu(II)-S(Cys) bond. Resonance enhanced predominantly nu(Ni-N)(His) modes indicate that the metal-N(His) bond distances in the Ni(II) derivative are the same as those in native azurin. The vibrational data also confirm a tetrahedral disposition of ligands about the metal in Ni(II)-azurin found in the protein crystallographic structures. As expected, excitation profile measurements on Ni(II)-azurin show that the nu(Ni-S)(Cys) assignable modes give maxima at the 440-nm absorption band, which confirms a S(Cys) --> Ni(II) charge-transfer origin of the 440-nm electronic transition in Ni(II)-substituted azurin.
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Current state of the art in cyclodextrin-induced room temperature phosphorescence in the presence of oxygen. J Photochem Photobiol A Chem 2005. [DOI: 10.1016/j.jphotochem.2005.04.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Zhu XM, Zhang SQ, Zheng X, Phillips DL. Resonance Raman Study of Short-Time Photodissociation Dynamics of the Charge-Transfer Band Absorption of Nitrobenzene in Cyclohexane Solution. J Phys Chem A 2005; 109:3086-93. [PMID: 16833633 DOI: 10.1021/jp0444114] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Resonance Raman spectra were obtained for nitrobenzene in cyclohexane solution with excitation wavelengths in resonance with the charge-transfer (CT) band absorption spectrum. These spectra indicate that the Franck-Condon region photodissociation dynamics have multidimensional character with motion mainly along the nominal NO2 symmetric stretch mode (nu 11), the nominal benzene ring stretch mode (nu 7), accompanied by a moderate degree of motion along the nominal ONO symmetry bend/benzene ring stretch mode (nu 23), the nominal C-N stretch/benzene ring breathing mode (nu 16), the nominal CCC bending mode (nu 20) and the nominal CCH in-plane bending mode (nu 14). A preliminary resonance Raman intensity analysis was done and the results for nitrobenzene were compared to previously reported results for several nitroalkanes.
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Affiliation(s)
- Xin-Ming Zhu
- Department of Applied Chemistry, Zhejiang University of Sciences, Second Road, Xia Sha Gao Jiao Yuan Qu Hangzhou 310033, People's Republic of China
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Neugebauer J, Baerends EJ, Efremov EV, Ariese F, Gooijer C. Combined Theoretical and Experimental Deep-UV Resonance Raman Studies of Substituted Pyrenes. J Phys Chem A 2005; 109:2100-6. [PMID: 16838980 DOI: 10.1021/jp045360d] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The results of time-dependent density functional theory (TDDFT) calculations of resonance Raman intensities are combined with experimental deep-ultraviolet resonance Raman measurements at a single wavelength, i.e., 244 nm, in order to test the possibility to distinguish several very similar compounds. Pyrene and three of its substituted derivatives, in which a single hydrogen atom has been replaced by a halogen atom, are compared. The fixed 244 nm excitation wavelength overlapped with the same electronic transition of the four pyrenes. Ground-state calculations using the BP86 exchange-correlation functional were used to predict the Raman frequencies, whereas excited-state calculations have been carried out employing the "statistical averaging of (model) orbital potentials" (SAOP) potential within a linear-response TDDFT framework in combination with the short-time approximation of resonance Raman intensities. In view of the simplistic theoretical approach, we find a surprisingly good agreement between the simulated and measured resonance Raman spectra of pyrene and its substituted analogues in terms of frequencies and intensities, which shows that the calculations can be used reliably to interpret the experimental spectra. With this combined information, it is possible to find criteria to distinguish the compounds under investigation, although many features of their vibrational spectra are similar.
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Affiliation(s)
- Johannes Neugebauer
- Theoretical Chemistry, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
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Szeghalmi AV, Erdmann M, Engel V, Schmitt M, Amthor S, Kriegisch V, Nöll G, Stahl R, Lambert C, Leusser D, Stalke D, Zabel M, Popp J. How Delocalized Is N,N,N‘,N‘-Tetraphenylphenylenediamine Radical Cation? An Experimental and Theoretical Study on the Electronic and Molecular Structure. J Am Chem Soc 2004; 126:7834-45. [PMID: 15212531 DOI: 10.1021/ja0395386] [Citation(s) in RCA: 139] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The electronic and molecular structure of N,N,N',N'-tetraphenylphenylenediamine radical cation 1(+) is in focus of this study. Resonance Raman experiments showed that at least eight vibrational modes are strongly coupled to the optical charge resonance band which is seen in the NIR. With the help of a DFT-based vibrational analysis, these eight modes were assigned to symmetric vibrations. The contribution of these symmetric modes to the total vibrational reorganization energy is dominant. These findings are in agreement with the conclusions from a simple two-state two-mode Marcus-Hush analysis which yields a tiny electron-transfer barrier. The excellent agreement of the X-ray crystal structure analysis and the DFT computed molecular structure of 1(+) on one hand as well as the solvent and solid-state IR spectra and the DFT-calculated IR active vibrations on the other hand prove 1(+) adopts a symmetrical delocalized Robin-Day class III structure both in the solid state and in solution.
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Affiliation(s)
- Adriana V Szeghalmi
- Institut für Physikalische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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25
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Shoute LCT, Loppnow GR. Excited-state metal-to-ligand charge transfer dynamics of a ruthenium(II) dye in solution and adsorbed on TiO2 nanoparticles from resonance Raman spectroscopy. J Am Chem Soc 2004; 125:15636-46. [PMID: 14664612 DOI: 10.1021/ja035231v] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The dynamics of metal-to-ligand charge transfer (MLCT) in a cis-bis(4,4'-dicarboxy-2,2'-bipyridine)-bis(isothiocyanato)ruthenium(II) dye (N3) are compared for the free dye in solution and the dye adsorbed on the surface of the TiO(2) nanoparticles from resonance Raman spectroscopy. The 544-nm MLCT absorption band of N3 adsorbed on TiO(2) is slightly blue-shifted from that of the free N3, indicating a weak electronic coupling between N3 and TiO(2). The resonance Raman spectra of N3 and the N3|TiO(2) complex obtained upon excitation within the lowest-lying MLCT singlet state of the dye are similar except for slight shifts in band positions. Resonance Raman cross sections have been obtained for the vibrational modes of both N3 and N3|TiO(2) with excitation frequencies spanning the 544-nm MLCT band. Self-consistent analysis of the resulting resonance Raman excitation profiles and absorption spectrum using a time-dependent wave packet formalism over two electronic states yields mode-specific vibrational and solvent reorganization energies. Despite the weak electronic coupling between N3 and TiO(2) in N3|TiO(2), adsorption strongly affects the reorganization energies of N3 in the intramolecular MLCT state. Adsorption of N3 onto TiO(2) increases the absolute Raman cross section of each mode by a factor of ca. 1.6 and decreases the vibrational and solvent reorganization energies by factors of 2 and 6, respectively. The excited-state dynamics of N3 adsorbed on the surface of TiO(2) nanoparticles were observed to be independent of the number of N3 molecules adsorbed per TiO(2) nanoparticle. The effect of TiO(2) on the dynamics of the adsorbed N3 is primarily due to both mode-specific vibrational and electronic pure dephasing, with the dominant contribution from the latter process.
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Affiliation(s)
- Lian C T Shoute
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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26
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Hara M, Tojo S, Kawai K, Majima T. Formation and decay of pyrene radical cation and pyrene dimer radical cation in the absence and presence of cyclodextrins during resonant two-photon ionization of pyrene and sodium 1-pyrene sulfonate. Phys Chem Chem Phys 2004. [DOI: 10.1039/b403409k] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Nishikawa S, Yamaguchi K, Fukahori T. Ultrasonic Relaxation Due to Complexation Reaction between β-Cyclodextrin and Alkylammonium Ions. J Phys Chem A 2003. [DOI: 10.1021/jp022589p] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sadakatsu Nishikawa
- Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Saga 840-8502, Japan
| | - Kyohei Yamaguchi
- Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Saga 840-8502, Japan
| | - Takanori Fukahori
- Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Saga 840-8502, Japan
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28
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Jiang H, Tongxin L, Zhide H. The fluorescence study of the inclusion coordinated compound of beta-cyclodextrin and p-hydroxyphenolacetamide and its analytical applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2002; 58:2659-2668. [PMID: 12396049 DOI: 10.1016/s1386-1425(02)00012-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The inclusion coordinated compound fluorescence of p-hydroxyphenolacetamide (PHPA) with beta-cyclodextrin was studied and a high sensitive analytical method to determine the content of PHPA was established based on the increased fluorescence intensity of the coordinated compounds in Britton-Robinson buffer solution (pH 7). The wavelength of the excited emission are 282 and 310 nm, respectively. The enhanced coordinated compounds fluorescence intensity is proportional to the concentration of PHPA in the range 0.030-11.0 mg/l. The relative standard deviation (R.S.D.) were within 0.66-4.2%. Correlation coefficient and inclusion binding constant Kf are obtained within 0.9950-0.9996 and 4.67 x 10(2), respectively. Meanwhile, a linear increase of the resonance light scattering (RLS) with the inclusion coordinated compounds concentration was noticed at a synchronous wavelength of 584 nm. The forming reasons of inclusion coordinated compounds were investigated. The 1:1 molar ratio composition of inclusion compound was measured with DTA and elemental analysis. The method is simple, rapid and has a good reproducibility. The method was used for determination of PHPA in an artificial sample with satisfactory results.
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Affiliation(s)
- He Jiang
- Department of Chemistry, Lanzhou University, People's Republic of China
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D'Anna F, Riela S, Lo Meo P, Gruttadauria M, Noto R. The binary pyrene/heptakis-(6-amino-6-deoxy)-β-cyclodextrin complex: a suitable chiral discriminator. Spectrofluorimetric study of the effect of some α-amino acids and esters on the stability of the binary complex. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00418-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Zwier JM, Brouwer AM, Keszthelyi T, Balakrishnan G, Offersgaard JF, Wilbrandt R, Barbosa F, Buser U, Amaudrut J, Gescheidt G, Nelsen SF, Little CD. Electron delocalization in the radical cation of 1,3,6,8-tetraazatricyclo[4.4.1.1(3,8)]dodecane, a 4-nitrogen-7-electron system. J Am Chem Soc 2002; 124:159-67. [PMID: 11772073 DOI: 10.1021/ja016999n] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The radical cation of 1,3,6,8-tetraazatricyclo [4.4.1.1(3,8)]dodecane (TTD) has been studied using magnetic resonance and optical spectroscopic methods and computational techniques. With the help of deuterated isotopomers, assignments of EPR and resonance Raman spectra could be unequivocally established. The results demonstrate that the radical cation has D(2d) symmetry, and instantaneous electron delocalization over the four equivalent nitrogen atoms occurs. This extensive delocalization in a completely saturated system is a unique feature of the TTD radical cation. The spectroscopy of TTD, in contrast to that of simpler diamines such as 1,4-diaza[2.2.2]bicyclooctane, simultaneously reveals the consequences of orbital interactions through space and through bonds. The relationship between nitrogen pyramidalization and hyperfine coupling constants in nitrogen-centered radical cations with a number of different bonding arrangements is reviewed.
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Affiliation(s)
- Jurriaan M Zwier
- Institute of Molecular Chemistry, University of Amsterdam, Nieuwe Achtergracht 129, NL-1018 WS Amsterdam, The Netherlands
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32
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Waterland MR, Kelley AM. Resonance Raman and ab Initio Studies of the Electronic Transitions of Aqueous Azide Anion. J Phys Chem A 2001. [DOI: 10.1021/jp010925g] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark R. Waterland
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506-3701
| | - Anne Myers Kelley
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506-3701
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33
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Sadlej-Sosnowska N, Siemiarczuk A. A time resolved and steady-state fluorescence quenching study on naproxen and its cyclodextrin complexes in water. J Photochem Photobiol A Chem 2001. [DOI: 10.1016/s1010-6030(00)00375-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Randall DW, George SD, Holland PL, Hedman B, Hodgson KO, Tolman WB, Solomon EI. Spectroscopic and Electronic Structural Studies of Blue Copper Model Complexes. 2. Comparison of Three- and Four-Coordinate Cu(II)−Thiolate Complexes and Fungal Laccase. J Am Chem Soc 2000. [DOI: 10.1021/ja001592o] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David W. Randall
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
| | - Serena DeBeer George
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
| | - Patrick L. Holland
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
| | - Britt Hedman
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
| | - Keith O. Hodgson
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
| | - William B. Tolman
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
| | - Edward I. Solomon
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
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35
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Randall DW, George SD, Hedman B, Hodgson KO, Fujisawa K, Solomon EI. Spectroscopic and Electronic Structural Studies of Blue Copper Model Complexes. 1. Perturbation of the Thiolate−Cu Bond. J Am Chem Soc 2000. [DOI: 10.1021/ja001591w] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David W. Randall
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, and Department of Chemistry, University of Tsukuba, Tsukuba 305-8571 Japan
| | - Serena DeBeer George
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, and Department of Chemistry, University of Tsukuba, Tsukuba 305-8571 Japan
| | - Britt Hedman
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, and Department of Chemistry, University of Tsukuba, Tsukuba 305-8571 Japan
| | - Keith O. Hodgson
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, and Department of Chemistry, University of Tsukuba, Tsukuba 305-8571 Japan
| | - Kiyoshi Fujisawa
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, and Department of Chemistry, University of Tsukuba, Tsukuba 305-8571 Japan
| | - Edward I. Solomon
- Contribution from the Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, and Department of Chemistry, University of Tsukuba, Tsukuba 305-8571 Japan
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36
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Okada M, Kawaguchi Y, Okumura H, Kamachi M, Harada A. Complex formation of cyclodextrins with poly(propylene glycol) derivatives. ACTA ACUST UNITED AC 2000. [DOI: 10.1002/1099-0518(200012)38:1+<4839::aid-pola220>3.0.co;2-e] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Li P, Zhao L, Yalkowsky SH. Combined effect of cosolvent and cyclodextrin on solubilization of nonpolar drugs. J Pharm Sci 1999; 88:1107-11. [PMID: 10564056 DOI: 10.1021/js990159d] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Solubility enhancement has broad implications in parenteral formulation design. A simple mathematical model has been developed to describe the combined effect of cosolvency and complexation on nonpolar drug solubilization. The total drug solubility is determined by the summation of three drug species present in the solution: free drug [D], drug-ligand binary complex [DL], and drug-ligand-cosolvent ternary complex [DLC]. The proposed model established the dependencies of these three species upon the intrinsic drug solubility, [D(u)], the cosolvent solubilizing power, sigma, the binary and ternary intrinsic complexation constants, K(b)(int) and K(t)(int), and the cosolvent destabilizing powers for the binary and the ternary complexes, rho(b) and rho(t). A nonpolar solute, Fluasterone, is used to evaluate the newly generated equation. The model explains the decline in drug solubility produced by low cosolvent concentrations as well as the increase in the solubility produced by high cosolvent concentrations that are observed at all cyclodextrin concentrations.
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Affiliation(s)
- P Li
- Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson, Arizona 85721, USA
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38
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Wade DA, Torres PA, Tucker SA. Spectrochemical investigations in dendritic media: evaluation of nitromethane as a selective fluorescence quenching agent in aqueous carboxylate-terminated polyamido amine (PAMAM) dendrimers. Anal Chim Acta 1999. [DOI: 10.1016/s0003-2670(99)00388-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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Kelley AM. Resonance Raman Intensity Analysis of Vibrational and Solvent Reorganization in Photoinduced Charge Transfer. J Phys Chem A 1999. [DOI: 10.1021/jp991530o] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Anne Myers Kelley
- Department of Chemistry, Kansas State University, Willard Hall, Manhattan, Kansas 66506-3701
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40
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Madrid JM, Villafruela M, Serrano R, Mendicuti F. Experimental Thermodynamics and Molecular Mechanics Calculations of Inclusion Complexes of 9-Methyl Anthracenoate and 1-Methyl Pyrenoate with β-Cyclodextrin. J Phys Chem B 1999. [DOI: 10.1021/jp9838240] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jose Manuel Madrid
- Departamento de Química Física, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Marisol Villafruela
- Departamento de Química Física, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Roberto Serrano
- Departamento de Química Física, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Francisco Mendicuti
- Departamento de Química Física, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
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41
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Tan WH, Ishikura T, Maruta A, Yamamoto T, Matsui Y. Molecular Recognition in Ternary Complexes ofγ-Cyclodextrin with Naphthalenedicarboxylate Ions and a Space-Regulator Ion. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1998. [DOI: 10.1246/bcsj.71.2323] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Milewski M, Augustyniak W, Maciejewski A. Ternary Complexes of 4H-1-Benzopyran-4-thione with β-Cyclodextrin and Alcohols. Dramatic Effect of Complex Formation on Fluorescence and Phosphorescence Intensity. J Phys Chem A 1998. [DOI: 10.1021/jp981695h] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marek Milewski
- Faculty of Chemistry, and Apparatus Laboratory, Adam Mickiewicz University, Grunwaldzka 6, 60-790 Poznań, Poland
| | - Włodzimierz Augustyniak
- Faculty of Chemistry, and Apparatus Laboratory, Adam Mickiewicz University, Grunwaldzka 6, 60-790 Poznań, Poland
| | - Andrzej Maciejewski
- Faculty of Chemistry, and Apparatus Laboratory, Adam Mickiewicz University, Grunwaldzka 6, 60-790 Poznań, Poland
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43
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Gamelin DR, Randall DW, Hay MT, Houser RP, Mulder TC, Canters GW, de Vries S, Tolman WB, Lu Y, Solomon EI. Spectroscopy of Mixed-Valence CuA-Type Centers: Ligand-Field Control of Ground-State Properties Related to Electron Transfer. J Am Chem Soc 1998. [DOI: 10.1021/ja973161k] [Citation(s) in RCA: 138] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Wang C, Mohney BK, Williams RD, Petrov V, Hupp JT, Walker GC. Solvent Control of Vibronic Coupling upon Intervalence Charge Transfer Excitation of (CN)5FeCNRu(NH3)5- as Revealed by Resonance Raman and Near-Infrared Absorption Spectroscopies. J Am Chem Soc 1998. [DOI: 10.1021/ja9736931] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chengfei Wang
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania 15260 Department of Chemistry, Northwestern University Evanston, Illinois 60208
| | - Brian K. Mohney
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania 15260 Department of Chemistry, Northwestern University Evanston, Illinois 60208
| | - Robert D. Williams
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania 15260 Department of Chemistry, Northwestern University Evanston, Illinois 60208
| | - Vladimir Petrov
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania 15260 Department of Chemistry, Northwestern University Evanston, Illinois 60208
| | - Joseph T. Hupp
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania 15260 Department of Chemistry, Northwestern University Evanston, Illinois 60208
| | - Gilbert C. Walker
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania 15260 Department of Chemistry, Northwestern University Evanston, Illinois 60208
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45
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Mitra S, Das R, Mukherjee S. Intramolecular Proton Transfer in Inclusion Complexes of Cyclodextrins: Role of Water and Highly Polar Nonaqueous Media. J Phys Chem B 1998. [DOI: 10.1021/jp972779d] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sivaprasad Mitra
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Ranjan Das
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
| | - Samaresh Mukherjee
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
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46
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Shen X, Belletête M, Durocher G. Spectral and Photophysical Studies of the 1:3 (Guest/Host) Rotaxane-like Inclusion Complex Formed by a 3H-Indole and β-Cyclodextrin. J Phys Chem B 1998. [DOI: 10.1021/jp9726854] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xinghai Shen
- Département de Chimie, Université de Montréal, C.P. 6128, Succ. A, Montréal, Québec, H3C 3J7, Canada
| | - Michel Belletête
- Département de Chimie, Université de Montréal, C.P. 6128, Succ. A, Montréal, Québec, H3C 3J7, Canada
| | - Gilles Durocher
- Département de Chimie, Université de Montréal, C.P. 6128, Succ. A, Montréal, Québec, H3C 3J7, Canada
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47
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Affiliation(s)
- Anne B. Myers
- Department of Chemistry, University of Rochester, Rochester, New York 14627−0216
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48
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Kwok WM, Phillips DL, Yeung PKY, Yam VWW. Resonance Raman Investigation of the MLCT Transition in [Pt(dppm)2(PhC⋮C)2] and the MMLCT Transition in [Pt2(μ-dppm)2(μ-PhC⋮C)(PhC⋮C)2]+. J Phys Chem A 1997. [DOI: 10.1021/jp972374t] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wai Ming Kwok
- Department of Chemistry, University of Hong Kong, Pokfulam Road, Hong Kong
| | - David Lee Phillips
- Department of Chemistry, University of Hong Kong, Pokfulam Road, Hong Kong
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49
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Affiliation(s)
- Kenneth A. Connors
- School of Pharmacy, University of Wisconsin, 425 North Charter Street, Madison, Wisconsin 53706
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50
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Hamai S. Inclusion of 2-Chloronaphthalene by α-Cyclodextrin and Room-Temperature Phosphorescence of 2-Chloronaphthalene in Aqueous d-Glucose Solutions Containing α-Cyclodextrin. J Phys Chem B 1997. [DOI: 10.1021/jp963197j] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sanyo Hamai
- Department of Chemistry, College of Education, Akita University, Tegata Gakuen-machi 1-1, Akita 010, Japan
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