dc.contributor.author | Elif Akhüseyin Yıldız | |
dc.contributor.author | Ebru YABAŞ | |
dc.contributor.author | Fazlı Sözmen | |
dc.contributor.author | Yasemin Bozkurt | |
dc.contributor.author | Ahmet Karatay | |
dc.contributor.author | Bahadır Boyacioglu | |
dc.contributor.author | Hüseyin Ünver | |
dc.contributor.author | Ayhan Elmali | |
dc.date.accessioned | 2023-04-12T08:54:51Z | |
dc.date.available | 2023-04-12T08:54:51Z | |
dc.date.issued | 2022 | tr |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/13643 | |
dc.description.abstract | Borondipyrromethene (BODIPY) chromophores are composed
of a functional-COOH group at meso position with or without a
biphenyl ring, and their compounds with heavy iodine atoms at
����� 2, ����� 6 positions of the BODIPY indacene core were synthesized.
The photophysical properties of the compounds were
studied with steady-state absorption and fluorescence measurements.
It was observed that the absorption band is significantly
red-shifted, and fluorescence signals are quenched in the
presence of iodine atoms. In addition to that, it was indicated
that the biphenyl ring does not affect the spectral shifting in
the absorption as well as fluorescence spectra. In an attempt to
investigate the effect of π-expanded biphenyl moieties and
heavy iodine atoms on charge transfer dynamics, femtosecond
transient absorption spectroscopy measurements were carried
out in the environment of the tetrahydrofuran (THF) solution.
Based on the performed ultrafast pump-probe spectroscopy,
BODIPY compounds with iodine atoms lead to intersystem
crossing (ISC) and ISC rates were determined as 150 ps and
180 ps for iodine BODIPY compounds with and without π-
expanded biphenyl moieties, respectively. According to the
theoretical results, the charge transfer in the investigated
compounds mostly appears to be intrinsic local excitations,
corresponding to high photoluminescence efficiency. These
experimental findings are useful for the design and study of the
fundamental photochemistry of organic triplet photosensitizers. | tr |
dc.rights | info:eu-repo/semantics/openAccess | tr |
dc.title | Effects of Heavy Iodine Atoms and π-Expanded Conjugation on Charge Transfer Dynamics in Carboxylic Acid BODIPY Derivatives as Triplet Photosensitizers | tr |
dc.type | article | tr |
dc.contributor.department | İmranlı Meslek Yüksekokulu | tr |
dc.contributor.authorID | 0000-0001-7163-3057 | tr |
dc.relation.publicationcategory | Rapor | tr |