DNA-Multichromophore Systems

Teo, Yin Nah; Kool, Eric T.

doi:10.1021/cr100351g

Cited by 303 publications

(237 citation statements)

References 336 publications

(690 reference statements)

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“…The coupled effects of base pairing and base stacking in water were carefully examined for Gua 3 ·Cyt 3 and (GuaCytGua)·(CytGuaCyt) by Ko and Hammes-Schiffer [319] by means of QM/MM (QM ¼ TDDFT) calculations: in both cases, proton transfer was found to stabilize the interstrand charge-transfer state, and in (GuaCytGua)·(CytGuaCyt) it helped facilitate the nonadiabatic decay from the intrastrand to the interstrand charge-transfer state [35,36].…”

Section: Base Pairing In Dna Strandsmentioning

confidence: 99%

Computational Modeling of Photoexcitation in DNA Single and Double Strands

Lü

Lan

Thiel

2014

Topics in Current Chemistry

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The photoexcitation of DNA strands triggers extremely complex photoinduced processes, which cannot be understood solely on the basis of the behavior of the nucleobase building blocks. Decisive factors in DNA oligomers and polymers include collective electronic effects, excitonic coupling, hydrogen-bonding interactions, local steric hindrance, charge transfer, and environmental and solvent effects. This chapter surveys recent theoretical and computational efforts to model real-world excited-state DNA strands using a variety of established and emerging theoretical methods. One central issue is the role of localized vs delocalized excitations and the extent to which they determine the nature and the temporal evolution of the initial photoexcitation in DNA strands.

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Section: Base Pairing In Dna Strandsmentioning

confidence: 99%

Computational Modeling of Photoexcitation in DNA Single and Double Strands

Lü

Lan

Thiel

2014

Topics in Current Chemistry

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“…Such a complex goal can be achieved by integrating energy/electron transfer donor-acceptor systems in a single molecular structure [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] or by self-assembling them through highly selective and directional supramolecular interactions [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51]. However, the donor-acceptor system based on covalent bond connection has become more and more complex, which will make the synthesis much more complicated.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Bonding-Controlled Photoinduced Electron and Energy Transfer

Chen

Tung

et al. 2015

Lecture Notes in Chemistry

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Photoinduced electron and energy transfer processes play an important role in photosynthesis and optoelectronic conversion. The investigation of photoinduced electron and energy transfer, wherein donor and acceptor are assembled via noncovalent interactions, has attracted much interest. Among these noncovalent interactions, H-bonding interaction has emerged as a powerful tool to construct high array of supramolecular architectures owing to their tunable binding constant, high directionality and selectivity. This chapter provides an overview of the recent developments in H-bonding-based energy/electron transfer. Advances in this research field, including (1) the basic theories for energy transfer and electron transfer processes, (2) recent progresses of energy transfer and electron transfer based on H-bonding, (3) their applications in constructing optoelectronic devices, light-harvesting systems, wide-range color display, and storage materials, are presented.

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“…[31][32][33][34][35] In comparison to pyrene, the phenylethynylpyrene-1-yl moiety in the TINA molecule has higher fluorescence quantum yield and is less sensitive to oxygen quenching even in aqueous solutions, [36][37][38] which is beneficial for PUC. Recently, we examined TINA-modified G4-DNAs forming parallel tetramolecular assemblies in which TINA molecule is present at the 5'-end, between T and dG at the 5'-end of the dTG 4 T sequence and in the middle of the G-tract of dTG 6 T sequence (Figure 1 D). [33] In each assembly the G-quadruplex formation led to effective electronic communication between TINA molecules, which disappeared upon thermal denaturation (Supporting Information, Section 6).…”

mentioning

confidence: 99%

G‐Quadruplex Supramolecular Assemblies in Photochemical Upconversion

Mutsamwira

Ainscough

Partridge

et al. 2016

Chemistry A European J

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Parallel, tetramolecular G-quadruplex (G4) DNA possessing TINA monomer, (R)-1-O-[4-(1-pyrenylethynyl)phenylmethyl]glycerol, were synthesised and evaluated in complexes with tris(2,2'-bipyridine)ruthenium(II), [Ru(bpy)3 ](2+) , and the Zn(2+) derivative of 5,10,15,20-tetrakis-(1-methyl-4-pyridyl)-21 H,23H-porphine, ZnTMpyP4. UV/Vis, fluorescence, and circular dichroism (CD) spectroscopy showed that the use of G4-DNA as a template resulted in the effective communication between the ligands and the TINA molecule that was covalently attached to the 5'-end and between T and dG at the 5'-end of the dTG4 T sequence. Only one G4-DNA possessing the TINA molecule at the 5'-end of the dTG4 T sequence was able to yield a green-to-blue photochemical upconversion (PUC, λem =420 nm) in the presence of [Ru(bpy)3 ](2+) upon excitation at 500 nm. Different DNA secondary structures can thus be used in DNA-based assemblies for PUC and the way of attachment of chromophores to DNA plays a pivotal role for the creation of a photosynthetic centre.

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DNA-Multichromophore Systems

Cited by 303 publications

References 336 publications

Computational Modeling of Photoexcitation in DNA Single and Double Strands

Computational Modeling of Photoexcitation in DNA Single and Double Strands

Hydrogen Bonding-Controlled Photoinduced Electron and Energy Transfer

G‐Quadruplex Supramolecular Assemblies in Photochemical Upconversion

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