Interlayer Triplet Energy Transfer in Dion–Jacobson Two-Dimensional Lead Halide Perovskites Containing Naphthalene Diammonium Cations

2021 ◽  
pp. 4793-4798
Author(s):  
YunHui L. Lin ◽  
Justin C. Johnson
Keyword(s):  
Energy Transfer ◽  
Two Dimensional ◽  
Triplet Energy ◽  
Halide Perovskites ◽  
Triplet Energy Transfer ◽  
Lead Halide

Intramolecular Triplet Energy Transfer in Two-Dimensional Hybrid Perovskite Nanosheets

2021 ◽  
pp. 139132
Author(s):  
Wenyuan Zhao ◽  
Ruiling Zhang ◽  
Daoyuan Zheng ◽  
Sijia Wang ◽  
Siping Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Two Dimensional ◽  
Triplet Energy ◽  
Hybrid Perovskite ◽  
Triplet Energy Transfer

Thymine Dimerization Induced by Oxidative DNA Lesions and Epigenetic Intermediates via Triplet-Triplet Energy Transfer

2020 ◽  
Author(s):  
Mauricio Lineros-Rosa ◽  
Antonio Francés-Monerris ◽  
Antonio Monari ◽  
Miguel Angél Miranda ◽  
Virginie Lhiaubet-Vallet
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Transient Absorption ◽  
Theoretical Calculations ◽  
Dna Lesions ◽  
Transient Absorption Spectroscopy ◽  
Triplet Energy ◽  
Pyrimidine Dimers ◽  
Triplet Energy Transfer ◽  
Dna Nucleobases

Interaction of nucleic acids with light is a scientific question of paramount relevance not only in the understanding of life functioning and evolution, but also in the insurgence of diseases such as malignant skin cancer and in the development of biomarkers and novel light-assisted therapeutic tools. This work shows that the UVA portion of sunlight, not absorbed by canonical DNA nucleobases, can be absorbed by 5-formyluracil (ForU) and 5-formylcytosine (ForC), two ubiquitous oxidative lesions and epigenetic intermediates present in living beings in natural conditions. We measure the strong propensity of these molecules to populate triplet excited states able to transfer the excitation energy to thymine-thymine dyads, inducing the formation of the highly toxic and mutagenic cyclobutane pyrimidine dimers (CPDs). By using steady-state and transient absorption spectroscopy, NMR, HPLC, and theoretical calculations, we quantify the differences in the triplet-triplet energy transfer mediated by ForU and ForC, revealing that the former is much more efficient in delivering the excitation energy and producing the CPD photoproduct. Although significantly slower than ForU, ForC is also able to harm DNA nucleobases and therefore this process has to be taken into account as a viable photosensitization mechanism. The present findings evidence a rich photochemistry crucial to understand DNA photodamage and of potential use in the development of biomarkers and non-conventional photodynamic therapy agents.

scholarly journals Erratum: Exciton-polaron spectral structures in two-dimensional hybrid lead-halide perovskites [Phys. Rev. Materials 2 , 064605 (2018)]

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Stefanie Neutzner ◽  
Félix Thouin ◽  
Daniele Cortecchia ◽  
Annamaria Petrozza ◽  
Carlos Silva ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Halide Perovskites ◽  
Lead Halide

Cation Engineering for Resonant Energy Level Alignment in Two-Dimensional Lead Halide Perovskites

2021 ◽  
pp. 2528-2535
Author(s):  
Nadège Marchal ◽  
Edoardo Mosconi ◽  
Gonzalo García-Espejo ◽  
Tahani M. Almutairi ◽  
Claudio Quarti ◽  
...  
Keyword(s):  
Energy Level ◽  
Two Dimensional ◽  
Resonant Energy ◽  
Energy Level Alignment ◽  
Halide Perovskites ◽  
Lead Halide

Triplet energy transfer in conjugated polymers. II. A polaron theory description addressing the influence of disorder

2008 ◽  
Vol 78 (4) ◽  
Author(s):  
Ivan I. Fishchuk ◽  
Andrey Kadashchuk ◽  
Lekshmi Sudha Devi ◽  
Paul Heremans ◽  
Heinz Bässler ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Conjugated Polymers ◽  
Triplet Energy ◽  
Polaron Theory ◽  
Triplet Energy Transfer

Triplet Energy Transfer Insight in Coordination of Unsaturated Hydrocarbons by d0Bent Metallocenes (Zr, Hf)

2007 ◽  
Vol 111 (43) ◽  
pp. 10928-10937 ◽  
Author(s):  
Galina V. Loukova ◽  
Svetlana E. Starodubova ◽  
Vyatcheslav A. Smirnov
Keyword(s):  
Energy Transfer ◽  
Triplet Energy ◽  
Unsaturated Hydrocarbons ◽  
Triplet Energy Transfer
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