scholarly journals Evolution from Tunneling to Hopping Mediated Triplet Energy Transfer from Quantum Dots to Molecules

2020 ◽  
Vol 142 (41) ◽  
pp. 17581-17588 ◽  
Author(s):  
Zhiyuan Huang ◽  
Zihao Xu ◽  
Tingting Huang ◽  
Victor Gray ◽  
Kasper Moth-Poulsen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Triplet Energy ◽  
Triplet Energy Transfer

scholarly journals Correction to Direct vs Delayed Triplet Energy Transfer from Organic Semiconductors to Quantum Dots and Implications for Luminescent Harvesting of Triplet Excitons

ACS Nano ◽  
2020 ◽  
Vol 14 (8) ◽  
pp. 10748-10749
Author(s):  
Victor Gray ◽  
Jesse R. Allardice ◽  
Zhilong Zhang ◽  
Simon Dowland ◽  
James Xiao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Organic Semiconductors ◽  
Triplet Energy ◽  
Triplet Energy Transfer ◽  
Triplet Excitons

Energetic Dependence of Triplet Energy Transfer to PbS Quantum Dots for Singlet-Fission Based Photo-multiplication

2019 ◽  
Author(s):  
Victor Gray ◽  
Jesse Allardice ◽  
Simon Dowland ◽  
Zhilong Zhang ◽  
James Xiao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Singlet Fission ◽  
Triplet Energy ◽  
Triplet Energy Transfer ◽  
Pbs Quantum Dots

Energetic Dependence of Triplet Energy Transfer to PbS Quantum Dots for Singlet-Fission Based Photo-multiplication

2019 ◽  
Author(s):  
Victor Gray ◽  
Jesse Allardice ◽  
Simon Dowland ◽  
Zhilong Zhang ◽  
James Xiao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Singlet Fission ◽  
Triplet Energy ◽  
Triplet Energy Transfer ◽  
Pbs Quantum Dots

Triplet energy migration pathways from PbS quantum dots to surface-anchored polyacenes controlled by charge transfer

Nanoscale ◽  
2021 ◽  
Author(s):  
Guohui Zhao ◽  
Zongwei Chen ◽  
Kao Xiong ◽  
Guijie Liang ◽  
Jianbing Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Charge Transfer ◽  
Energy Migration ◽  
Triplet Energy ◽  
Transfer Energetics ◽  
Pentacene Derivatives ◽  
Triplet Energy Transfer ◽  
Migration Pathways ◽  
Pbs Quantum Dots

Kinetic pathways of triplet energy transfer from photoexcited PbS QDs to surface-anchored tetracene and pentacene derivatives are dictated by charge-transfer energetics at the QD/molecule interface.

scholarly journals Thiol-Anchored TIPS-Tetracene Ligands with Quantitative Triplet Energy Transfer to PbS Quantum Dots and Improved Thermal Stability

2020 ◽  
Vol 11 (17) ◽  
pp. 7239-7244
Author(s):  
Victor Gray ◽  
Zhilong Zhang ◽  
Simon Dowland ◽  
Jesse R. Allardice ◽  
Antonios M. Alvertis ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Energy Transfer ◽  
Triplet Energy ◽  
Triplet Energy Transfer ◽  
Pbs Quantum Dots

scholarly journals Direct vs Delayed Triplet Energy Transfer from Organic Semiconductors to Quantum Dots and Implications for Luminescent Harvesting of Triplet Excitons

ACS Nano ◽  
2020 ◽  
Vol 14 (4) ◽  
pp. 4224-4234 ◽  
Author(s):  
Victor Gray ◽  
Jesse R. Allardice ◽  
Zhilong Zhang ◽  
Simon Dowland ◽  
James Xiao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Organic Semiconductors ◽  
Triplet Energy ◽  
Triplet Energy Transfer ◽  
Triplet Excitons

scholarly journals Direct triplet sensitization of oligothiophene by quantum dots

2019 ◽  
Vol 10 (24) ◽  
pp. 6120-6124 ◽  
Author(s):  
Zihao Xu ◽  
Tao Jin ◽  
Yiming Huang ◽  
Karimulla Mulla ◽  
Francesco A. Evangelista ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Energy Loss ◽  
Intersystem Crossing ◽  
Triplet Energy ◽  
Small Energy ◽  
Triplet Energy Transfer

Triplet energy transfer from quantum dots takes advantage of small energy loss during intersystem crossing.

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.

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