Key Role of End-Capping Groups in Optoelectronic Properties of Poly-p-phenylene Cation Radicals

Marat R. Talipov; Anitha Boddeda; Qadir K. Timerghazin; Rajendra Rathore

doi:10.1021/jp5082752

Key Role of End-Capping Groups in Optoelectronic Properties of Poly-p-phenylene Cation Radicals

The Journal of Physical Chemistry C ◽

10.1021/jp5082752 ◽

2014 ◽

Vol 118 (37) ◽

pp. 21400-21408 ◽

Cited By ~ 58

Author(s):

Marat R. Talipov ◽

Anitha Boddeda ◽

Qadir K. Timerghazin ◽

Rajendra Rathore

Keyword(s):

Optoelectronic Properties ◽

Cation Radicals ◽

End Capping

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Role of hydrogen-bonding in supramolecular electronics: Supramolecular chirality, optoelectronic properties and photoconductivity

10.1021/scimeetings.0c01984 ◽

2020 ◽

Author(s):

Amparo Ruiz Carretero

Keyword(s):

Hydrogen Bonding ◽

Optoelectronic Properties ◽

Supramolecular Chirality

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Tunable optoelectronic properties of radio frequency sputter-deposited Sb2Se3 thin films: Role of growth angle and thickness

Solar Energy ◽

10.1016/j.solener.2019.11.016 ◽

2019 ◽

Vol 194 ◽

pp. 716-723

Author(s):

Alapan Dutta ◽

Ranveer Singh ◽

Sanjeev Kumar Srivastava ◽

Tapobrata Som

Keyword(s):

Thin Films ◽

Radio Frequency ◽

Optoelectronic Properties ◽

Growth Angle ◽

Sputter Deposited

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Oxidation of pyridine with potassium peroxydisulphate. The role of pyridine cation-radicals as primary intermediates

Journal of the Chemical Society Perkin Transactions 2 ◽

10.1039/p29740000582 ◽

1974 ◽

pp. 582 ◽

Cited By ~ 15

Author(s):

Anthony Ledwith ◽

Peter J. Russell

Keyword(s):

Cation Radicals

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Telomere Formation by Rap1p Binding Site Arrays Reveals End-Specific Length Regulation Requirements and Active Telomeric Recombination

Molecular and Cellular Biology ◽

10.1128/mcb.21.23.8117-8128.2001 ◽

2001 ◽

Vol 21 (23) ◽

pp. 8117-8128 ◽

Cited By ~ 28

Author(s):

Simona Grossi ◽

Alessandro Bianchi ◽

Pascal Damay ◽

David Shore

Keyword(s):

Binding Sites ◽

De Novo ◽

Repeat Sequence ◽

Independent Manner ◽

Telomere Repeat ◽

Length Regulation ◽

End Capping ◽

Original Array

ABSTRACT Rap1p, the major telomere repeat binding protein in yeast, has been implicated in both de novo telomere formation and telomere length regulation. To characterize the role of Rap1p in these processes in more detail, we studied the generation of telomeres in vivo from linear DNA substrates containing defined arrays of Rap1p binding sites. Consistent with previous work, our results indicate that synthetic Rap1p binding sites within the internal half of a telomeric array are recognized as an integral part of the telomere complex in an orientation-independent manner that is largely insensitive to the precise spacing between adjacent sites. By extending the lengths of these constructs, we found that several different Rap1p site arrays could never be found at the very distal end of a telomere, even when correctly oriented. Instead, these synthetic arrays were always followed by a short (≈100-bp) “cap” of genuine TG repeat sequence, indicating a remarkably strict sequence requirement for an end-specific function(s) of the telomere. Despite this fact, even misoriented Rap1p site arrays promote telomere formation when they are placed at the distal end of a telomere-healing substrate, provided that at least a single correctly oriented site is present within the array. Surprisingly, these heterogeneous arrays of Rap1p binding sites generate telomeres through a RAD52-dependent fusion resolution reaction that results in an inversion of the original array. Our results provide new insights into the nature of telomere end capping and reveal one way by which recombination can resolve a defect in this process.

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