The voltammetric study of the reduction of tetraalkylammonium perchlorate by Fe(TPP)2−

Tetraalkylammonium ions react with Fe ( TPP )2− to form Fe ( TPP )( R )− and trialkylamine. The tetrabutylammonium cation was verified to be the source of the alkyl group in the product, Fe ( TPP )( R )−, by using (1 H 5 C 2)3(2 H 5 C 2) N − as the cation and 2 H NMR. The reaction of Fe ( TPP )2− with Bu 4 N − was monitored by cyclic voltammetry and thin layer spectroelectrochemistry. The activation parameters were measured, and were most consistent with an electron transfer (ET) mechanism. The rate of the reaction of tetramethyl and tetraethylammonium ions with Fe ( TPP )2− was also examined. The rate constant decreased significantly as the carbon chain length decreased, which was also consistent with an ET mechanism.

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A new fluorescence molecular switch incorporating TTF and tetraphenylporphyrin units

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424607000837 ◽

2007 ◽

Vol 11 (10) ◽

pp. 729-735 ◽

Cited By ~ 11

Author(s):

Yibo Liu ◽

Chengyun Wang ◽

Meijiang Li ◽

Sufang Lv ◽

Guoqiao Lai ◽

...

Keyword(s):

Electron Transfer ◽

Cyclic Voltammetry ◽

Excited State ◽

Ground State ◽

Photoinduced Electron Transfer ◽

Intramolecular Charge Transfer ◽

Molecular Switch ◽

Target Compound ◽

Chemical Methods ◽

H Nmr

A donor-σ-acceptor compound incorporating tetrathiafulvalene and tetraphenylporphyrin units was synthesized. The structures of the target compound and its intermediates have been characterized by 1 H NMR, ESI MS, UV-vis, IR and mp. The results of UV-vis and cyclic voltammetry of the compound indicated negligible intramolecular charge transfer interaction in its ground state. The fluorescence and fluorescence lifetime of the compound were reduced, compared to tetraphenylporphyrin, which evidently indicated that photoinduced electron transfer occurred from the tetrathiafulvalene (TTF) unit to the tetraphenylporphyrin unit in the excited state. The fluorescence intensity of the compound could be reversibly modulated by sequential oxidation and reduction of the TTF unit using electrochemical and chemical methods. Therefore, a new fluorescence molecular switch based on TTF and porphyrin units was established.

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Investigation of the Consecutive Electron Transfer of Metalloporphyrin Species on the Simulative Cell Membrane by Thin Layer Cyclic Voltammetry

International Journal of Electrochemical Science ◽

10.20964/110345 ◽

2016 ◽

pp. 3952-3962

Author(s):

Wenting Gu ◽

Keyword(s):

Electron Transfer ◽

Cyclic Voltammetry ◽

Cell Membrane ◽

Thin Layer

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EFFICIENT DELIVERY OF NUCLEIC ACIDS BY USING MODIFIED POLYETHYLENIMINE-BASED NANOPARTICLES

International Journal of Nanoscience ◽

10.1142/s0219581x11007806 ◽

2011 ◽

Vol 10 (01n02) ◽

pp. 193-197

Author(s):

RITU GOYAL ◽

SUSHIL KUMAR TRIPATHI ◽

ARCHANA SWAMI ◽

KAILASH CHAND GUPTA

Keyword(s):

Cell Viability ◽

Transfection Efficiency ◽

Carbon Chain ◽

Egfp Expression ◽

Carbon Chain Length ◽

H Nmr ◽

Covalent Crosslinking ◽

Efficient Delivery ◽

Branched Polyethylenimine ◽

Dna Complex

Branched polyethylenimine, (b PEI, 25 kDa), was converted into nanoparticles by using three different crosslinkers, 1,6-hexanebisphosphate (HP), adipic acid (AA), and 1,4-butane dialdehyde (BA), having same carbon chain length (C-6), and the effect of ionic and covalent crosslinking on the transfection efficiency was studied. The synthesized nanoparticles were characterized by 1H-NMR, IR, DLS, AFM, and TEM. The entire series of nanoparticles was tested for their toxicity and ability to deliver genes in COS-1 and CHO cell lines. It was observed that, AAP-3 nanoparticle/DNA complex exhibited highest transfection efficiency (~2.1–10.7 folds) than the native PEI and commercially available transfection reagents, such as GenePORTER 2TM, LipofectamineTM, and SuperfectTM, with cell viability >80%. Among the series, the highest cell viability was observed with BAP nanoparticles (>96%). These nanoparticles were able to deliver GFP-siRNA very efficiently inside the cells with ~76%–90% suppression of EGFP expression. Cellular trafficking studies showed that these nanoparticles carry pDNA inside the nucleus of the cells within 2 h of the addition to the cells.

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Investigation of the Consecutive Electron Transfer of Metalloporphyrin Species Containing Different Substituents at the Liquid/Liquid Interface by Thin-Layer Cyclic Voltammetry

The Journal of Physical Chemistry C ◽

10.1021/jp3061043 ◽

2012 ◽

Vol 116 (31) ◽

pp. 16660-16665 ◽

Cited By ~ 6

Author(s):

Xiaoquan Lu ◽

Yao Li ◽

Ping Sun ◽

Bowan Wu ◽

Zhonghua Xue ◽

...

Keyword(s):

Electron Transfer ◽

Cyclic Voltammetry ◽

Thin Layer ◽

Liquid Interface

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Synthesis, spectroscopy and electrochemistry of octaphenoxyphthalocyaninato silicon complexes

Journal of Porphyrins and Phthalocyanines ◽

10.1002/jpp.361 ◽

2001 ◽

Vol 05 (07) ◽

pp. 555-563 ◽

Cited By ~ 24

Author(s):

M. DAVID MAREE ◽

TEBELLO NYOKONG

Keyword(s):

Electron Transfer ◽

Cyclic Voltammetry ◽

Organic Solvents ◽

High Yield ◽

Cyclic Voltammograms ◽

H Nmr ◽

Axial Ligands ◽

Convenient Route ◽

Cyclic Voltammetry Data

A number of octaphenoxyphthalocyaninato silicon complexes containing a variety of axial ligands, represented by ( OPh )8 PcSi ( X )2 (where X = chloro 3, hydroxy 4, (4-carboxybenzene) acetato 5, isonicatinato 6, propionato 7, nitrophenoxy 8 and dimethylaminoxy 9) have been synthesized using a convenient route starting with the 4,5-diphenoxy-1,2-dicyanobenzene. 1 H NMR and UV/vis spectra, and the cyclic voltammetry of the complexes are reported. The complexes are obtained in high yield and are soluble in many organic solvents. Cyclic voltammetry revealed two reduction couples and one oxidation couple for these complexes. Analysis of the cyclic voltammograms showed that compounds 6 and 8 were easier to oxidize and more difficult to reduce than the rest. Also cyclic voltammetry data suggested that electron transfer was not governed only by diffusion.

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Mechanical reinforcement of polyethylene using n- alkyl group-functionalized multiwalled carbon nanotubes: Effect of alkyl group carbon chain length and density

Polymer Engineering & Science ◽

10.1002/pen.23579 ◽

2013 ◽

Vol 54 (2) ◽

pp. 336-344 ◽

Cited By ~ 5

Author(s):

Li Wei ◽

Wenchao Jiang ◽

Kunli Goh ◽

Yuan Chen

Keyword(s):

Carbon Nanotubes ◽

Multiwalled Carbon Nanotubes ◽

Chain Length ◽

Alkyl Group ◽

Carbon Chain ◽

Carbon Chain Length ◽

Multiwalled Carbon ◽

Mechanical Reinforcement ◽

Functionalized Multiwalled Carbon Nanotubes ◽

Group Carbon

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The Synthesis and Properties of 3-(2'-Benzothiazolyl)coumarin Fluorescent Dyes for Polyester Fabrics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.415-417.1825 ◽

2011 ◽

Vol 415-417 ◽

pp. 1825-1828

Author(s):

Shang Ming Lin ◽

Dan Dan Yao ◽

Zong Han Chu ◽

Shao Hai Fu

Keyword(s):

Fluorescent Dyes ◽

Carbon Chain ◽

Carbon Chain Length ◽

Color Fastness ◽

Color Strength ◽

Polyester Fabrics ◽

H Nmr ◽

Chemical Structures ◽

Ft Ir ◽

Coumarin Ring

Fluorescent dyes based on 3-(2'-benzothiazolyl)coumarin were synthesized by a simple condensing reaction in this study. The chemical structures of synthesized compounds were subjected to FT-IR, 1H-NMR, Mass and UV/Vis analysis for color characteristics. Polyester fabrics dyed with the compounds were evaluated by color strength and color fastness to washing, perspiration and light of ISO. The results showed that all dyes decide after identified by IR, MS and 1H-NMR the structure is correct. And then all dyes were used to the dyeing of polyester fabrics. It was clearly that color strength increased with the increasing of the amount of carbon in the 7-position of coumarin ring. The level of color fastness to washing and perspiration were 4-5 or more, while the level of color fastness to light decreased with an increase of carbon chain length.

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