---
_id: '7290'
abstract:
- lang: eng
text: 'We report a family of Pt and Pd benzoporphyrin dyes with versatile photophysical
properties and easy access from cheap and abundant chemicals. Attaching 4 or 8
alkylsulfone groups onto a meso-tetraphenyltetrabenzoporphyrin (TPTBP) macrocylcle
renders the dyes highly soluble in organic solvents, photostable, and electron-deficient
with the redox potential raised up to 0.65 V versus the parent porphyrin. The
new dyes intensively absorb in the blue (Soret band, 440–480 nm) and in the red
(Q-band, 620–650 nm) parts of the electromagnetic spectrum and show bright phosphorescence
at room-temperature in the NIR with quantum yields up to 30% in solution. The
small singlet–triplet energy gap yields unusually efficient thermally activated
delayed fluorescence (TADF) at elevated temperatures in solution and in polymeric
matrices with quantum yields as high as 27% at 120 °C, which is remarkable for
benzoporphyrins. Apart from oxygen sensing, these properties enable unprecedented
simultaneous, self-referenced oxygen and temperature sensing with a single indicator
dye: whereas oxygen can be determined either via the decay time of phosphorescence
or TADF, the temperature is accessed via the ratio of the two emissions. Moreover,
the dyes are efficient sensitizers for triplet–triplet annihilation (TTA)-based
upconversion making possible longer sensitization wavelength than the conventional
benzoporphyrin complexes. The Pt-octa-sulfone dye also features interesting semireversible
transformation in basic media, which generates new NIR absorbing species.'
article_processing_charge: No
article_type: original
author:
- first_name: Peter W.
full_name: Zach, Peter W.
last_name: Zach
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Ingo
full_name: Klimant, Ingo
last_name: Klimant
- first_name: Sergey M.
full_name: Borisov, Sergey M.
last_name: Borisov
citation:
ama: 'Zach PW, Freunberger SA, Klimant I, Borisov SM. Electron-deficient near-infrared
Pt(II) and Pd(II) benzoporphyrins with dual phosphorescence and unusually efficient
thermally activated delayed fluorescence: First demonstration of simultaneous
oxygen and temperature sensing with a single emitter. ACS Applied Materials
& Interfaces. 2017;9(43):38008-38023. doi:10.1021/acsami.7b10669'
apa: 'Zach, P. W., Freunberger, S. A., Klimant, I., & Borisov, S. M. (2017).
Electron-deficient near-infrared Pt(II) and Pd(II) benzoporphyrins with dual phosphorescence
and unusually efficient thermally activated delayed fluorescence: First demonstration
of simultaneous oxygen and temperature sensing with a single emitter. ACS Applied
Materials & Interfaces. ACS. https://doi.org/10.1021/acsami.7b10669'
chicago: 'Zach, Peter W., Stefan Alexander Freunberger, Ingo Klimant, and Sergey
M. Borisov. “Electron-Deficient near-Infrared Pt(II) and Pd(II) Benzoporphyrins
with Dual Phosphorescence and Unusually Efficient Thermally Activated Delayed
Fluorescence: First Demonstration of Simultaneous Oxygen and Temperature Sensing
with a Single Emitter.” ACS Applied Materials & Interfaces. ACS, 2017.
https://doi.org/10.1021/acsami.7b10669.'
ieee: 'P. W. Zach, S. A. Freunberger, I. Klimant, and S. M. Borisov, “Electron-deficient
near-infrared Pt(II) and Pd(II) benzoporphyrins with dual phosphorescence and
unusually efficient thermally activated delayed fluorescence: First demonstration
of simultaneous oxygen and temperature sensing with a single emitter,” ACS
Applied Materials & Interfaces, vol. 9, no. 43. ACS, pp. 38008–38023,
2017.'
ista: 'Zach PW, Freunberger SA, Klimant I, Borisov SM. 2017. Electron-deficient
near-infrared Pt(II) and Pd(II) benzoporphyrins with dual phosphorescence and
unusually efficient thermally activated delayed fluorescence: First demonstration
of simultaneous oxygen and temperature sensing with a single emitter. ACS Applied
Materials & Interfaces. 9(43), 38008–38023.'
mla: 'Zach, Peter W., et al. “Electron-Deficient near-Infrared Pt(II) and Pd(II)
Benzoporphyrins with Dual Phosphorescence and Unusually Efficient Thermally Activated
Delayed Fluorescence: First Demonstration of Simultaneous Oxygen and Temperature
Sensing with a Single Emitter.” ACS Applied Materials & Interfaces,
vol. 9, no. 43, ACS, 2017, pp. 38008–23, doi:10.1021/acsami.7b10669.'
short: P.W. Zach, S.A. Freunberger, I. Klimant, S.M. Borisov, ACS Applied Materials
& Interfaces 9 (2017) 38008–38023.
date_created: 2020-01-15T12:15:16Z
date_published: 2017-10-10T00:00:00Z
date_updated: 2021-01-12T08:12:48Z
day: '10'
ddc:
- '540'
- '543'
doi: 10.1021/acsami.7b10669
extern: '1'
file:
- access_level: open_access
checksum: 0461c990eb910f19a70c6e5349ec35ed
content_type: application/pdf
creator: sfreunbe
date_created: 2020-06-29T14:49:32Z
date_updated: 2020-07-14T12:47:55Z
file_id: '8051'
file_name: Paper_Manuscript_submitted.pdf
file_size: 2072792
relation: main_file
file_date_updated: 2020-07-14T12:47:55Z
has_accepted_license: '1'
intvolume: ' 9'
issue: '43'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Submitted Version
page: 38008-38023
publication: ACS Applied Materials & Interfaces
publication_identifier:
eissn:
- 1944-8252
issn:
- 1944-8244
publication_status: published
publisher: ACS
quality_controlled: '1'
status: public
title: 'Electron-deficient near-infrared Pt(II) and Pd(II) benzoporphyrins with dual
phosphorescence and unusually efficient thermally activated delayed fluorescence:
First demonstration of simultaneous oxygen and temperature sensing with a single
emitter'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2017'
...