Homo- or Hetero-Triplet-Triplet Annihilation? A Case Study with Perylene-BODIPY Dyads/Triads

Xiaoneng Cui; Ahmed M. El-Zohry; Zhijia Wang; Jianzhang Zhao; Omar F. Mohammed

doi:10.1021/acs.jpcc.7b05620

Homo- or Hetero-Triplet-Triplet Annihilation? A Case Study with Perylene-BODIPY Dyads/Triads

Xiaoneng Cui, Ahmed M. El-Zohry, Zhijia Wang, Jianzhang Zhao^*, Omar F. Mohammed

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The photophysical processes of intramolecular "ping-pong" energy transfers in the iodinated reference dyad BDP-I₂-Py, as well as the uniodinated dyad BDP-Py and triad BDP-2Py, were studied. For BDP-I₂-Py, a forward Förster resonance energy transfer (FRET) from the perylene (Py) unit to the diiodoBDP unit (τ = 7 ps) and a backward triplet energy transfer (TTET, τ = 3 ns) from the diiodoBDP unit to the Py unit were observed. For the BDP-Py and BDP-2Py systems, a FRET (τ = 5-8 ps) and a photoinduced electron transfer (PET) (τ = 1-1.5 ns) were observed in acetonitrile. The uniodinated dyad and triad were used as the triplet energy acceptor and emitter for a triplet-triplet annihilation (TTA) upconversion with palladium tetraphenyltetrabenzoporphyrin as the triplet photosensitizer. A maximum upconversion quantum yield of 12.6% was observed. Given that the dyad (BDP-Py) contains one BDP unit and one Py unit while the triad (BDP-2Py) contains two Py units and one BDP unit and based on the results from steady-state femtosecond and nanosecond transient optical spectroscopies, it is concluded that neither intramolecular homo-TTA nor intramolecular hetero-TTA is possible during a TTA upconversion for those systems.

Original language	English
Pages (from-to)	16182-16192
Number of pages	11
Journal	Journal of Physical Chemistry C
Volume	121
Issue number	30
DOIs	https://doi.org/10.1021/acs.jpcc.7b05620
State	Published - 3 Aug 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

Access to Document

10.1021/acs.jpcc.7b05620

Cite this

@article{1bdaaeafa5f14ba1957789baa67d9054,

title = "Homo- or Hetero-Triplet-Triplet Annihilation? A Case Study with Perylene-BODIPY Dyads/Triads",

abstract = "The photophysical processes of intramolecular {"}ping-pong{"} energy transfers in the iodinated reference dyad BDP-I2-Py, as well as the uniodinated dyad BDP-Py and triad BDP-2Py, were studied. For BDP-I2-Py, a forward F{\"o}rster resonance energy transfer (FRET) from the perylene (Py) unit to the diiodoBDP unit (τ = 7 ps) and a backward triplet energy transfer (TTET, τ = 3 ns) from the diiodoBDP unit to the Py unit were observed. For the BDP-Py and BDP-2Py systems, a FRET (τ = 5-8 ps) and a photoinduced electron transfer (PET) (τ = 1-1.5 ns) were observed in acetonitrile. The uniodinated dyad and triad were used as the triplet energy acceptor and emitter for a triplet-triplet annihilation (TTA) upconversion with palladium tetraphenyltetrabenzoporphyrin as the triplet photosensitizer. A maximum upconversion quantum yield of 12.6\% was observed. Given that the dyad (BDP-Py) contains one BDP unit and one Py unit while the triad (BDP-2Py) contains two Py units and one BDP unit and based on the results from steady-state femtosecond and nanosecond transient optical spectroscopies, it is concluded that neither intramolecular homo-TTA nor intramolecular hetero-TTA is possible during a TTA upconversion for those systems.",

author = "Xiaoneng Cui and El-Zohry, \{Ahmed M.\} and Zhijia Wang and Jianzhang Zhao and Mohammed, \{Omar F.\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = aug,

day = "3",

doi = "10.1021/acs.jpcc.7b05620",

language = "English",

volume = "121",

pages = "16182--16192",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

number = "30",

}

TY - JOUR

T1 - Homo- or Hetero-Triplet-Triplet Annihilation? A Case Study with Perylene-BODIPY Dyads/Triads

AU - Cui, Xiaoneng

AU - El-Zohry, Ahmed M.

AU - Wang, Zhijia

AU - Zhao, Jianzhang

AU - Mohammed, Omar F.

PY - 2017/8/3

Y1 - 2017/8/3

N2 - The photophysical processes of intramolecular "ping-pong" energy transfers in the iodinated reference dyad BDP-I2-Py, as well as the uniodinated dyad BDP-Py and triad BDP-2Py, were studied. For BDP-I2-Py, a forward Förster resonance energy transfer (FRET) from the perylene (Py) unit to the diiodoBDP unit (τ = 7 ps) and a backward triplet energy transfer (TTET, τ = 3 ns) from the diiodoBDP unit to the Py unit were observed. For the BDP-Py and BDP-2Py systems, a FRET (τ = 5-8 ps) and a photoinduced electron transfer (PET) (τ = 1-1.5 ns) were observed in acetonitrile. The uniodinated dyad and triad were used as the triplet energy acceptor and emitter for a triplet-triplet annihilation (TTA) upconversion with palladium tetraphenyltetrabenzoporphyrin as the triplet photosensitizer. A maximum upconversion quantum yield of 12.6% was observed. Given that the dyad (BDP-Py) contains one BDP unit and one Py unit while the triad (BDP-2Py) contains two Py units and one BDP unit and based on the results from steady-state femtosecond and nanosecond transient optical spectroscopies, it is concluded that neither intramolecular homo-TTA nor intramolecular hetero-TTA is possible during a TTA upconversion for those systems.

AB - The photophysical processes of intramolecular "ping-pong" energy transfers in the iodinated reference dyad BDP-I2-Py, as well as the uniodinated dyad BDP-Py and triad BDP-2Py, were studied. For BDP-I2-Py, a forward Förster resonance energy transfer (FRET) from the perylene (Py) unit to the diiodoBDP unit (τ = 7 ps) and a backward triplet energy transfer (TTET, τ = 3 ns) from the diiodoBDP unit to the Py unit were observed. For the BDP-Py and BDP-2Py systems, a FRET (τ = 5-8 ps) and a photoinduced electron transfer (PET) (τ = 1-1.5 ns) were observed in acetonitrile. The uniodinated dyad and triad were used as the triplet energy acceptor and emitter for a triplet-triplet annihilation (TTA) upconversion with palladium tetraphenyltetrabenzoporphyrin as the triplet photosensitizer. A maximum upconversion quantum yield of 12.6% was observed. Given that the dyad (BDP-Py) contains one BDP unit and one Py unit while the triad (BDP-2Py) contains two Py units and one BDP unit and based on the results from steady-state femtosecond and nanosecond transient optical spectroscopies, it is concluded that neither intramolecular homo-TTA nor intramolecular hetero-TTA is possible during a TTA upconversion for those systems.

UR - https://www.scopus.com/pages/publications/85026882057

U2 - 10.1021/acs.jpcc.7b05620

DO - 10.1021/acs.jpcc.7b05620

M3 - Article

AN - SCOPUS:85026882057

SN - 1932-7447

VL - 121

SP - 16182

EP - 16192

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 30

ER -

Homo- or Hetero-Triplet-Triplet Annihilation? A Case Study with Perylene-BODIPY Dyads/Triads

Abstract

Bibliographical note

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this