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Articles by Ebin Sebastian
Molecular Orientation Controls Triplet Exciton Dynamics in Organic Molecules Coupled to Lanthanide-Doped Nanoparticles
Introduction Click to copy section linkSection link copied! Triplet excitons are of great importance for applications in optoelectronics, (1−4) bioimaging, (5,6) photocatalysis, (7,8) and photon upconversion. (9,10) Compared to spin-0 singlet excitons, spin-1 triplet excitons exhibit long lifetimes and large diffusion lengths, enabling them to act as long-range energy carriers and reservoirs.
Excited‐state Dynamics in Segregated Donor‐acceptor Stacks Versus A Peri‐bisdonor‐acceptor System
Supporting Information As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors.
Unveiling the Intersystem Crossing Dynamics in N-Annulated Perylene Bisimides
Unveiling the Intersystem Crossing Dynamics in N-Annulated Perylene Bisimides The efficient population of the triplet excited states in heavy metal-free organic chromophores has been one of the long-standing research problems to molecular photochemists. The negligible spin-orbit coupling matrix elements in the purely organic chromophores and the large singlet-triplet energy gap (ΔES-T) pose a hurdle for ultrafast intersystem crossing (ISC).
A Symmetry‐Broken Charge‐Separated State in the Marcus Inverted Region
Graphical Abstract This work reports the Marcus-inverted-region-assisted evolution of a long-lived symmetry-broken charge-separated state in a near-orthogonal bichromophoric system consisting of perylenediimide dimers. Abstract We report a long-lived charge-separated state in a chromophoric pair (DC-PDI2) that uniquely integrates the advantages of fundamental processes of photosynthetic reaction centers: i) Symmetry-breaking charge-separation (SB-CS) and ii) Marcus-inverted-region dependence.
Excimer evolution hampers symmetry-broken charge-separated states
Excimer evolution hampers symmetry-broken charge-separated states† Ebin Sebastian, ‡a Jeswin Sunny ‡a and Mahesh Hariharan *a Abstract Achieving long-lived symmetry-broken charge-separated states in chromophoric assemblies is quintessential for enhanced performance of artificial photosynthetic mimics. However, the occurrence of energy trap states hinders exciton and charge transport across photovoltaic devices, diminishing power conversion efficiency.
Solvent Dielectric Delimited Nitro-Nitrito Photorearrangement in a Perylenediimide Derivative
Solvent Dielectric Delimited Nitro-Nitrito Photorearrangement in a Perylenediimide Derivative Aniruddha Mazumder, Ebin Sebastian and Mahesh Hariharan Abstract Vibrant excited-state dynamics, in conjunction with distinctive photochemistry has established nitrated-polycyclic aromatic hydrocarbons as an exhilarating class of organic compounds.
Null Exciton-Coupled Chromophoric Dimer Exhibits Symmetry-Breaking Charge Separation
Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Am. Chem. Soc.
Near-Quantitative Triplet State Population via Ultrafast Intersystem Crossing in Perbromoperylenediimide
Perylenediimide (PDI) derivatives are essential organic semiconductor materials in a variety of photofunctional devices. By virtue of the large energy gap between the singlet and triplet excited states (ΔEST = 1.1 eV), augmentation of the triplet state population in monomeric PDI is a challenging task.
Null Exciton Splitting in Chromophoric Greek Cross (+) Aggregate
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Null Exciton Splitting in Chromophoric Greek Cross (+) Aggregate
As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors.
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