Donor–acceptor type A2B2porphyrins: synthesis, energy transfer, computational and electrochemical studies

2017 ◽  
Vol 4 (4) ◽  
pp. 618-638 ◽  
Author(s):  
Sudipta Das ◽  
Haamid R. Bhat ◽  
Naresh Balsukuri ◽  
Prakash C. Jha ◽  
Yutaka Hisamune ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Type A ◽  
Electrochemical Studies ◽  
Dft Studies ◽  
Donor Acceptor

Synthesis, photophysical, electrochemical and DFT studies of donor–acceptor type A2B2porphyrins and their Zn(ii) and Pd(ii) complexes have been described.

Quantum Dot Bioconjugates as Energy Donors in Fluorescence Resonance Energy Transfer Assays

2003 ◽  
Vol 773 ◽  
Author(s):  
Aaron R. Clapp ◽  
Igor L. Medintz ◽  
J. Matthew Mauro ◽  
Hedi Mattoussi
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Organic Dyes ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Genetically Engineered ◽  
Molar Ratio ◽  
Binding Assays ◽  
Specific Sequence ◽  
Donor Acceptor

AbstractLuminescent CdSe-ZnS core-shell quantum dot (QD) bioconjugates were used as energy donors in fluorescent resonance energy transfer (FRET) binding assays. The QDs were coated with saturating amounts of genetically engineered maltose binding protein (MBP) using a noncovalent immobilization process, and Cy3 organic dyes covalently attached at a specific sequence to MBP were used as energy acceptor molecules. Energy transfer efficiency was measured as a function of the MBP-Cy3/QD molar ratio for two different donor fluorescence emissions (different QD core sizes). Apparent donor-acceptor distances were determined from these FRET studies, and the measured distances are consistent with QD-protein conjugate dimensions previously determined from structural studies.

Electrochemical studies of novel thiophene-tetrazine donor-acceptor hybrids

2021 ◽  
pp. 152905
Author(s):  
Sandra Pluczyk-Malek ◽  
Dawid Nastula ◽  
Damian Honisz ◽  
Rafal Jedrysiak ◽  
Mieczyslaw Lapkowski ◽  
...  
Keyword(s):  
Electrochemical Studies ◽  
Donor Acceptor

Diffusion modulated donor–acceptor energy transfer in a disordered system

1980 ◽  
Vol 72 (6) ◽  
pp. 3528-3538 ◽  
Author(s):  
Roy A. Auerbach ◽  
G. Wilse Robinson ◽  
Robert W. Zwanzig
Keyword(s):  
Energy Transfer ◽  
Disordered System ◽  
Donor Acceptor

Orientation Dependence of Energy Transfer in an Anthracene-Porphyrin Donor-Acceptor System

2001 ◽  
Vol 113 (19) ◽  
pp. 3733-3736 ◽  
Author(s):  
L. Giribabu ◽  
A. Ashok Kumar ◽  
V. Neeraja ◽  
Bhaskar G. Maiya
Keyword(s):  
Energy Transfer ◽  
Orientation Dependence ◽  
Donor Acceptor

Controlling fluorescence resonance energy transfer of donor–acceptor dyes by Diels–Alder dynamic covalent bonds

2021 ◽  
Vol 57 (26) ◽  
pp. 3275-3278
Author(s):  
Yanhui Cui ◽  
Fen Li ◽  
Xin Zhang
Keyword(s):  
Energy Transfer ◽  
Fluorescence Resonance Energy Transfer ◽  
Aromatic Amine ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Diels Alder ◽  
Covalent Bonds ◽  
Donor Acceptor ◽  
Fluorescence Resonance ◽  
Mutual Conversion

Two new dyes, consisting of an aromatic amine donor and dansyl acceptor connected by Diels–Alder bonds, display a switchable energy transfer. Dynamic covalent properties enable the mutual conversion of the two dyes by maleimide exchanges.

Synthesis and properties of covalently linked di-p-benzihomoporphyrin-BODIPY conjugates

2021 ◽  
pp. A-I
Author(s):  
Rima Sengupta ◽  
Shubham Tiwari ◽  
Mangalampalli Ravikanth
Keyword(s):  
Individual Characteristic ◽  
Electrochemical Studies ◽  
Dft Studies ◽  
Coupling Condition ◽  
Meso Position ◽  
Acid Catalyzed ◽  
Characteristic Features ◽  
Covalently Linked ◽  
Mild Acid ◽  
Spectral And Electrochemical Studies

Two mono meso-functionalized [20]di-[Formula: see text]-benzihomoporphyrins containing [Formula: see text]-formylphenyl and [Formula: see text]-iodophenyl groups at meso-position respectively were synthesized by condensing one equivalent of appropriate tetrapyrrane with one equivalent of [Formula: see text]-formyl benzaldehyde/[Formula: see text]-iodo benzaldehyde in CH2Cl2 under mild acid catalyzed conditions. The meso-formylphenyl and meso-iodophenyl functionalized di-[Formula: see text]-benzihomoporphyrins were used to synthesize two covalently linked di-[Formula: see text]-benzihomoporphyrins-BODIPY conjugates. The meso-formylphenyl-functionalized di-[Formula: see text]-benzihomoporphyrin was converted to corresponding meso-dipyrrolyl substituted di-[Formula: see text]-benzihomoporphyrin by treating with excess pyrrole under acid catalyzed conditions. In the next step, the meso-dipyrrolyl di-[Formula: see text]-benzihomoporphyrin was subjected to oxidation followed by BF2 complexation to afford the directly linked di-[Formula: see text]-benzihomoporphyrin-BODIPY conjugate. The meso-iodophenyl functionalized di-[Formula: see text]-benzihomoporphyrin was coupled with ethynyl-functionalized BODIPY under mild Pd(0) coupling condition to synthesize diphenylethyne-bridged di-[Formula: see text]-benzihomoporphyrin-BODIPY conjugate. The two conjugates were characterized by HR-MS, NMR, absorption, electrochemical, fluorescence and DFT studies. The spectral and electrochemical studies indicated that the two constituents, di-[Formula: see text]-benzihomoporphyrin and BODIPY units in the conjugates interact weakly and retain their individual characteristic features. DFT studies indicated a possibility of charge transfer between di-[Formula: see text]-benzihomoporphyrin and BODIPY units in conjugates.

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