Structural characterization of PEGylated polyethylenimine-entrapped gold nanoparticles: an NMR study

The Analyst ◽  
2016 ◽  
Vol 141 (18) ◽  
pp. 5390-5397 ◽  
Author(s):  
Benqing Zhou ◽  
Mingwu Shen ◽  
István Bányai ◽  
Xiangyang Shi
Keyword(s):  
Gold Nanoparticles ◽  
Structural Characterization ◽  
Spatial Structures ◽  
Nmr Study ◽  
Nmr Techniques

The internal spatial structures of PEGylated polyethylenimine-entrapped gold nanoparticles can be effectively analyzed via advanced NMR techniques.

scholarly journals Structural characterization of functionalized gold nanoparticles for drug delivery in cancer therapy: a NMR based approach

2015 ◽  
Vol 17 (29) ◽  
pp. 18971-18979 ◽  
Author(s):  
Sílvia C. Coelho ◽  
Maria Rangel ◽  
Maria C. Pereira ◽  
Manuel A. N. Coelho ◽  
Galya Ivanova
Keyword(s):  
Drug Delivery ◽  
Gold Nanoparticles ◽  
Cancer Therapy ◽  
Structural Characterization ◽  
Au Nanoparticles ◽  
Functionalized Gold Nanoparticles ◽  
Loaded Surface

Structure of Bortezomib loaded, surface functionalized Au nanoparticles.

scholarly journals Structural characterization of electric-field assisted dip-coating of gold nanoparticles on silicon

AIP Advances ◽  
2015 ◽  
Vol 5 (9) ◽  
pp. 097181 ◽  
Author(s):  
Ghada H. Dushaq ◽  
Amro Alkhatib ◽  
Mahmoud S. Rasras ◽  
Ammar M. Nayfeh
Keyword(s):  
Gold Nanoparticles ◽  
Electric Field ◽  
Structural Characterization ◽  
Dip Coating

scholarly journals Solid-State NMR Techniques for the Structural Characterization of Cyclic Aggregates Based on Borane–Phosphane Frustrated Lewis Pairs

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1400 ◽  
Author(s):  
Robert Knitsch ◽  
Melanie Brinkkötter ◽  
Thomas Wiegand ◽  
Gerald Kehr ◽  
Gerhard Erker ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Magic Angle ◽  
Frustrated Lewis Pairs ◽  
Wide Range ◽  
Nmr Techniques ◽  
Nmr Methods ◽  
Lewis Pairs

Modern solid-state NMR techniques offer a wide range of opportunities for the structural characterization of frustrated Lewis pairs (FLPs), their aggregates, and the products of cooperative addition reactions at their two Lewis centers. This information is extremely valuable for materials that elude structural characterization by X-ray diffraction because of their nanocrystalline or amorphous character, (pseudo-)polymorphism, or other types of disordering phenomena inherent in the solid state. Aside from simple chemical shift measurements using single-pulse or cross-polarization/magic-angle spinning NMR detection techniques, the availability of advanced multidimensional and double-resonance NMR methods greatly deepened the informational content of these experiments. In particular, methods quantifying the magnetic dipole–dipole interaction strengths and indirect spin–spin interactions prove useful for the measurement of intermolecular association, connectivity, assessment of FLP–ligand distributions, and the stereochemistry of adducts. The present review illustrates several important solid-state NMR methods with some insightful applications to open questions in FLP chemistry, with a particular focus on supramolecular associates.

Structural Characterization of AgI–AgPO3–Ag2WO4 Superionic Conducting Glasses by Advanced Solid-State NMR Techniques

2017 ◽  
Vol 121 (25) ◽  
pp. 13823-13832 ◽  
Author(s):  
Mickaël Blais-Roberge ◽  
Silvia H. Santagneli ◽  
Sandra H. Messaddeq ◽  
Maxime Rioux ◽  
Yannick Ledemi ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Nmr Techniques

Structural characterization of the molten globule and native states of ovalbumin: A H NMR study

2009 ◽  
Vol 50 (6) ◽  
pp. 465-474 ◽  
Author(s):  
MASARU SOGAMI ◽  
SEIICHI ERA ◽  
TAIHEI KOSEKI ◽  
NAOKI NAGAI
Keyword(s):  
Structural Characterization ◽  
Molten Globule ◽  
H Nmr ◽  
Nmr Study

scholarly journals Synthesis, Structural Characterization of 4’,4’’-Dibenzoylcurcumin and Assessment of its Complexation with Fe3+ and Cu2+

2019 ◽  
Vol 35 (4) ◽  
Author(s):  
Pham Thu Thuy ◽  
Pham Chien Thang ◽  
Nguyen Viet Ha ◽  
Trieu Thi Nguyet
Keyword(s):  
Metal Ions ◽  
Structural Characterization ◽  
Solution Structure ◽  
13C Nmr Spectroscopy ◽  
Transition Metal Ions ◽  
Structural Features ◽  
Nmr Study ◽  
Supporting Base

The curcumin derivative 4’,4’’-dibenzoylcurcumin (HL) was synthesized by the reaction between curcumin and benzoyl chloride in the presence of pyridine as a supporting base. The composition and structure of HL were characterized by spectroscopic methods such as IR, 1H and 13C NMR spectroscopy. Reactions of HL and transition metal ions, such as Fe3+ and Cu2+, in mixtures of CH3OH and CH2Cl2 gave rise to the corresponding complexes, compositions and structural features of which were studied by thermal analysis and IR spectroscopy. The results strongly suggested the obtained complexes with the compositions of [FeL3] and [CuL2]. In such compounds, metal ions coordinates with the deprotonated ligands L– through the donor sets (O,O) of the keto-enol moieties. Keywords: Curcumin, 4’,4’’-dibenzoylcurcumin, β-diketone, Fe(III) complexes, Cu(II) complexes. References [1] A. Goel, A.B. Kannumakkara, B.B. Aggarwal, Curcumin as “Curecumin”: From Kitchen to Clinic, Biochem. Pharmacol. 75 (2008) 787-809. https://doi.org/10.1016/j.bcp.2007.08.016.[2] T. Esatbeyoglu, P. Huebbe, I.M.A. Ernst, D. Chin, A.E. Wagner, G. Rimbach, Curcumin - From Molecule to Biological Function, Angew. Chem. Int. Ed. 51 (2012) 5308-5332. https://doi.org/ 10.1002/anie.201107724.[3] K. Priyadarsini, The Chemistry of Curcumin: From Extraction to Therapeutic Agent, Molecules 19 (2014) 20091-20112. https://doi.org/10.3390/ molecules191220091.[4] S. Wanninger, V. Lorenz, A. Subhan, F.T. Edelmann, Metal complexes of curcumin – synthetic strategies, structures and medicinal applications, Chem. Soc. Rev. 44 (2015) 4986-5002. https://doi.org/10.1039/C5CS00088B.[5] J. Wang, D. Wei, B. Jiang, T. Liu, J. Ni, S. Zhou, Two copper(II) complexes of curcumin derivatives: synthesis, crystal structure and in vitro antitumor activity, Transition Met. Chem. 39 (2014) 553-558. https://doi.org/10.1007/s11243-014-9831-z.[6] R. Pettinari, F. Marchetti, C. Pettinari, F. Condello, A. Petrini, R. Scopelliti, T. Riedel, P.J. Dyson, Organometallic rhodium(III) and iridium(III) cyclopentadienyl complexes with curcumin and bisdemethoxycurcumin co-ligands, Dalton Transactions 44 (2015) 20523-20531. https://doi.org/10.1039/C5DT03037D.[7] P.T. Thùy, P.C. Thắng, N.H. Huy, N.V. Hà, T.T. Nguyệt, Synthesis, structural characterization of 4,4’-diacetylcurcumin and its complexes with Fe(III), Co(II) (in Vietnamese), Vietnam Journal of Chemistry 55 (2017) 33-37. [8] P.C. Thắng, P.T. Thùy, T.T.K. Ngân, L.C. Định, Đ.T. Đạt, T.T. Nguyệt, Synthesis, structural characterization of 4’,4’’-dimethoxy-4-methylcurcumin and evaluation of its complexation with Co2+ and Cu2+ (in Vietnamese), Vietnam Journal of Chemistry 56 (2018) 113-117. [9] P.T. Thùy, P.C. Thắng, V.T.B. Ngoc, T.T. Nguyệt, Synthesis and structural characterization of a heteroleptic Pd(II) complex with 4,4’-diacetylcurcumin (in Vietnamese), Vietnam Journal of Chemistry 56 (2018) 119-123. [10] K. Singletary, C. MacDonald, M. Iovinelli, C. Fisher, M. Wallig, Effect of the beta-diketones diferuloylmethane (curcumin) and dibenzoylmethane on rat mammary DNA adducts and tumors induced by 7,12-dimethylbenz[a] anthracene, Carcinogenesis 19 (1998) 1039-1043. https://doi.org/10.1093/carcin/ 19.6.1039.[11] F. Payton, P. Sandusky, W.L. Alworth, NMR Study of the Solution Structure of Curcumin, J. Nat. Prod. 70 (2007) 143-146. https://doi.org/10. 1021/np060263s.  

Structural Characterization of a Trinuclear Complex of Platinum(II) Containing Bridging 1-Methylcytosine Ligands. A Combined X-ray and Multinuclear NMR Study

1994 ◽  
Vol 33 (14) ◽  
pp. 3169-3176 ◽  
Author(s):  
Luisa Schenetti ◽  
Giuliano Bandoli ◽  
Alessandro Dolmella ◽  
Guendalina Trovo ◽  
Bruno Longato
Keyword(s):  
Structural Characterization ◽  
Trinuclear Complex ◽  
X Ray ◽  
Multinuclear Nmr ◽  
Nmr Study
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