Electrocatalytic Reactions by an Iron Porphyrin/Polypyrrole Modified Electrode Monitored by Electrochemical Quartz Crystal Microbalance

Liu, Mao‐Huang; Su, Yu

doi:10.1002/jccs.199900015

Cited by 6 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the last four decades analytical chemistry used porphyrins and metalloporphyrins that are incorporated into several polymeric films or membranes, such as: PVC [20], polysiloxanes [21], Nafion [22], polymethacrylates [23], polypyrrole [24] or chemically bonded to the polymer chain, such as PVP [25] for the detection or monitoring the presence of different analytes from gases to toxic heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Porphyrin-Polymeric Materials and their Amazing Applications: A Review

Fagadar‐Cosma

Făgădar-Cosma

Bîrdeanu

2016

J. Res. Updates Polym. Sci.

View full text Add to dashboard Cite

Porphyrins are versatile multifunctional biomimetic molecules that are obtained by condensation of pyrrole with the desired aromatic aldehydes. The porphyrin structure can be synthetically modified by either introduction of various peripheral functional groups or metals in its core, allowing creation of various porphyrin derivatives that exhibit amazing optoelectronic properties. This feature makes porphyrins molecules extremely useful especially in hybrid combination with photonic, electronic and magnetic compounds. This review is focused on the more recently obtained porphyrin-polymeric materials and on their various analytical, industrial and medical applications. The study underlines the assembling capacity of these porphyrin-polymer hybrids to form supramolecular tunable architectures by means of the association of more building block units. Porphyrin-polymer nano-and micro-materials play a preeminent role in sensing applications involving chromophores in the formulation of organic solar cells-due to their capacity to generate photo induced charge separation centers-and as new materials with interesting catalytic properties. Besides these technical applications, the photobactericidal activity of these porphyrin-polymer materials was evaluated against Gram positive and Gram negative strains bacteria and they represent an alternative to antibiotics in order to overcome the growing bacterial multiresistance. Polymer functionalization with porphyrin is commonly used to overcome some drawbacks such as self-quenching and photo-toxicity to the skin produced by the bare porphyrins, when used as photosensitizers in the non-invasive Photodynamic therapy of cancer (PDT).

show abstract

Section: Introductionmentioning

confidence: 99%

Hybrid Porphyrin-Polymeric Materials and their Amazing Applications: A Review

Fagadar‐Cosma

Făgădar-Cosma

Bîrdeanu

2016

J. Res. Updates Polym. Sci.

View full text Add to dashboard Cite

show abstract

Binding of Metal Ions and Metal Complexes to Macromolecular Carriers

Wöhrle

2003

Metal Complexes and Metals in Macromolecules

View full text Add to dashboard Cite

Solvolysis of 1‐tert‐Butyl‐1‐(4‐phenoxyphenyl) Methyl Bromide and Chloride. Further Example for Possible Contribution of Non‐canonical Resonance Structure in the Transition State

Liu

Chuang

2001

J Chinese Chemical Soc

View full text Add to dashboard Cite

The solvolysis of 1-tert-butyl-1-(4-phenoxy)methyl bro mide (5b) and chlo ride (5c) in a va ri ety of solvents were car ried out. Lim it ing SN1 mech a nisms were sug gested from the ob ser va tion of lin ear re la tion ships us ing sin gle-parameter Winstein-Grunwald type cor re la tion be tween log a rithm of rate con stants with YxBnBr and Y xBnCl scales, re spec tively. This re sult in di cated pos i tive charge delocalization over both aryl rings and pro vided fur ther ev i dence for pos si ble con tri bu tion of non-canonical res o nance struc ture in the cationic transi tion state. IN TRO DUC TIONGrunwald-Winstein type cor re la tion anal y ses (Eqs 1 and 2), 1,2 in which Y is the sol vent ion iz ing power and N is the nucleophilicity, have long been a use ful tool in the study of solvolytic mech a nisms for or ganic re ac tions. 3 Dif fer ent YX scales have been de vel oped for aliphatic and alicyclic substrates (RX) con tain ing a dif fer ent leav ing group X. 4 In our pre vi ous stud ies, new Y BnX 5 and Y xBnX 6 scales were sug gested for deal ing with the solvolysis of benzylic sub strates with pos i tive charge delocalization over one and two aryl rings, respec tively. These new scales could also be ap plied to the solvolysis of cer tain ar o matic acyl halides, such as, Y BnCl to benzoyl chlo rides 7 and YBnBr to benzoyl bro mides.More in ter est ingly, ex tended charge delocalization over both phenyl rings in the cationic tran si tion state of the solvolysis of N,N-diphenylcarbamoyl chlo ride (1) was re alized based on the ob ser va tion of lin ear cor re la tions with YxBnCl scale, and ab in itio cal cu la tions.9 Pos si ble con tri bu tion of non-canonical res o nance struc ture (2) was thus pro posed (Scheme I). 9 Sim i larly, in the solvolysis of 4-nitro-4 -phenoxy benzhydryl bro mide (3b) and chlo ride (3c) a non-canonical res o nance struc ture (4) (Scheme II) was also con sid ered to be in volved in the tran si tion state. 10 More ev i dence is needed to con firm the gen er al iza tion of the sig nif i cance of non-canonical res o nance in the cationic tran si tion state of solvolysis.Since the solvolysis of 1-aryl-1-tert-butylmethyl de riva tives was gen er ally con sid ered to pro ceed via lim it ing S N 1 mech a nism, 5a,11-13 we un der took to ex am ine the sol vent effects on the solvolytic re ac tiv ity of 1-tert-butyl-1-(4-phen -

show abstract

Electrocatalytic Reactions by an Iron Porphyrin/Polypyrrole Modified Electrode Monitored by Electrochemical Quartz Crystal Microbalance

Cited by 6 publications

References 14 publications

Hybrid Porphyrin-Polymeric Materials and their Amazing Applications: A Review

Hybrid Porphyrin-Polymeric Materials and their Amazing Applications: A Review

Binding of Metal Ions and Metal Complexes to Macromolecular Carriers

Solvolysis of 1‐tert‐Butyl‐1‐(4‐phenoxyphenyl) Methyl Bromide and Chloride. Further Example for Possible Contribution of Non‐canonical Resonance Structure in the Transition State

Contact Info

Product

Resources

About