By Brett M. Rambo, Eric S. Silver (auth.), Philip A. Gale, Wim Dehaen (eds.)

ISBN-10: 3642154433

ISBN-13: 9783642154430

Brett M. Rambo ∙ Eric S. Silver ∙ Christopher W. Bielawski ∙ Jonathan L. Sessler Covalent Polymers Containing Discrete Heterocyclic Anion Receptors Philip A. Gale ∙ Chang-Hee Lee Calix[n]pyrroles as Anion and Ion-Pair Complexants Wim Dehaen Calix[n]phyrins: Synthesis and Anion attractiveness Hiromitsu Maeda Acyclic Oligopyrrolic Anion Receptors Jeffery T. Davis Anion Binding and shipping through Prodigiosin and Its Analogs Hemraj Juwarker ∙ Jae-min Suk ∙ Kyu-Sung Jeong Indoles and comparable Heterocycles Pavel Anzenbacher Jr. Pyrrole-Based Anion Sensors, half I: Colorimetric Sensors Pavel Anzenbacher Jr. Pyrrole-Based Anion Sensors, half II: Fluorescence, Luminescence, and Electrochemical Sensors Ermitas Alcalde ∙ Immaculada Dinarès ∙ Neus Mesquida Imidazolium-Based Receptors Nathan L. Kilah ∙ Paul D. Beer Pyridine and Pyridinium-Based Anion Receptors Kevin P. McDonald ∙ Yuran Hua ∙ Amar H. Flood 1,2,3-Triazoles and the increasing application of cost impartial CHlllAnion Interactions

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68 7 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. -H. A. -H. Lee Abbreviation NMR Nuclear magnetic resonance 1 Introduction Calix[4]pyrroles (meso-octaalkylporphyrinogens) are a class of tetrapyrrolic macrocycle first synthesized in the late nineteenth century by Baeyer via the acid (HCl)-catalysed condensation of pyrrole and acetone [1].

9 V vs. Ag/ Ag+ 10À2 M in MeCN + TBA salts of perchlorate (TBAP) (Fig. 15). These investigators chose CV and differential pulse voltammetry (DPV) as the probe methods used to investigate the binding affinities of 42, 43 and polymer-44. In the case of the redox active receptors 42 and 43, exposure to H2PO4À, SO42À, HPO42À, CF3COOÀ, FÀ, and ClÀ produced no significant shifts in the CV or DPV curves. However, the Fc0/+ couple in 42 was found to undergo a shift of À10 mV when exposed to HSO4À, S2O42À, and ATP2À, while a shift of À10 mV in this wave was seen when 43 was exposed to PhPO42À and S2O42À.

In the case of macromolecules containing such species, such tuning was expected to be characteristic of the material. The use of appropriate solvents leads to swelling or shrinking of the films, which should result in a change in the stop gap of the photonic ILs. Similar effects were expected from counteranion exchange. As can be seen from an inspection of Fig. 13, such effects were observed for exposure of the photonic IL films to nitrate (NO3À), tetrafluoroborate (BF4À), perchlorate (ClO4À), phosphorous hexafluoride (PF6À), bis(trifluoromethylsulfonyl)imide (Tf2NÀ), and bromide (BrÀ).

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Anion Recognition in Supramolecular Chemistry by Brett M. Rambo, Eric S. Silver (auth.), Philip A. Gale, Wim Dehaen (eds.)

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