Using C60-bodipy dyads that show strong absorption of visible light and long-lived triplet excited states as organic triplet photosensitizers for triplet–triplet annihilation upconversion

Yang, Pei; Wu, Wanhua; Zhao, Jianzhang; Huang, Dandan; Yi, Xiuyu

doi:10.1039/c2jm34353c

Cited by 76 publications

(65 citation statements)

References 108 publications

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“…Following this line, we prepared a C 60 -Bodipy-styrylBodipy triad, which showed broadband absorption in the visible spectral region, to enhance the photocatalytic efficiency with a white light source (Huang et al, 2013a). We also prepared C 60dyads containing the chromophore of perylenebisimide (Liu and Zhao, 2012), styrylBodipy (Huang et al, 2012b), and ethyne-linked Bodipy (Huang et al, 2012a;Yang et al, 2012); an efficient ISC was observed for the dyads. We proposed that these C 60 -organic chromophore dyads that showed strong absorption of visible light and a long-lived triplet state are promising triplet photosensitizers for PDT, photocatalysis, and photon upconversion.…”

Section: Isc Of the C 60 -Bodipy Dyads: C 60 As The Electron Spin Conmentioning

confidence: 99%

Bodipy Derivatives as Triplet Photosensitizers and the Related Intersystem Crossing Mechanisms

Chen

Zhao

et al. 2019

Front. Chem.

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Recently varieties of Bodipy derivatives showing intersystem crossing (ISC) have been reported as triplet photosensitizers, and the application of these compounds in photocatalysis, photodynamic therapy (PDT), and photon upconversion are promising. In this review we summarized the recent development in the area of Bodipy-derived triplet photosensitizers and discussed the molecular structural factors that enhance the ISC ability. The compounds are introduced based on their ISC mechanisms, which include the heavy atom effect, exciton coupling, charge recombination (CR)-induced ISC, using a spin converter and radical enhanced ISC. Some transition metal complexes containing Bodipy chromophores are also discussed. The applications of these new triplet photosensitizers in photodynamic therapy, photocatalysis, and photon upconversion are briefly commented on. We believe the study of new triplet photosensitizers and the application of these novel materials in the abovementioned areas will be blooming.

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Section: Isc Of the C 60 -Bodipy Dyads: C 60 As The Electron Spin Conmentioning

confidence: 99%

Bodipy Derivatives as Triplet Photosensitizers and the Related Intersystem Crossing Mechanisms

Chen

Zhao

et al. 2019

Front. Chem.

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“…Both the singlet energy transfer and the triplet energy transfer can produce the triplet excited state of NDI, because the NDI unit is a "spin converter", that is, the p-conjugated core of NDI is directly attached to the Pt II coordination center, thus, efficient intersystem crossing (ISC) is expected for this coordination moiety. [27,[58][59][60][61]…”

Section: Molecular Design and Synthesismentioning

confidence: 99%

Broadband Visible‐Light‐Harvesting trans‐Bis(alkylphosphine) Platinum(II)‐Alkynyl Complexes with Singlet Energy Transfer between BODIPY and Naphthalene Diimide Ligands

Liu

Guo

et al. 2014

Chemistry A European J

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A heteroleptic bis(tributylphosphine) platinum(II)-alkynyl complex (Pt-1) showing broadband visible-light absorption was prepared. Two different visible-light-absorbing ligands, that is, ethynylated boron-dipyrromethene (BODIPY) and a functionalized naphthalene diimide (NDI) were used in the molecule. Two reference complexes, Pt-2 and Pt-3, which contain only the NDI or BODIPY ligand, respectively, were also prepared. The coordinated BODIPY ligand shows absorption at 503 nm and fluorescence at 516 nm, whereas the coordinated NDI ligand absorbs at 594 nm; the spectral overlap between the two ligands ensures intramolecular resonance energy transfer in Pt-1, with BODIPY as the singlet energy donor and NDI as the energy acceptor. The complex shows strong absorption in the region 450 nm-640 nm, with molar absorption coefficient up to 88 000 M(-1) cm(-1) . Long-lived triplet excited states lifetimes were observed for Pt-1-Pt-3 (36.9 μs, 28.3 μs, and 818.6 μs, respectively). Singlet and triplet energy transfer processes were studied by the fluorescence/phosphorescence excitation spectra, steady-state and time-resolved UV/Vis absorption and luminescence spectra, as well as nanosecond time-resolved transient difference absorption spectra. A triplet-state equilibrium was observed for Pt-1. The complexes were used as triplet photosensitizers for triplet-triplet annihilation upconversion, with upconversion quantum yields up to 18.4 % being observed for Pt-1.

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“…Recently, lightharvesting fullerene dyads as organic triplet sensitizers for TTA upconversion were reported. Some examples are listed as follows: OS-20 and OS-21 [91], OS-22 and OS-23 [92], OS-24 and OS-25 [93], and OS-26 and OS-27 [94]. …”

Section: Organic Sensitizers Based On Intramolecular Spin Convertermentioning

confidence: 99%

Transition-Metal Complexes for Triplet–Triplet Annihilation-Based Energy Upconversion

Zhang

Yang

Liu

et al. 2015

Green Chemistry and Sustainable Technology

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In recent years, significant progress has been achieved in the field of triplet-triplet annihilation (TTA)-based energy upconversion, in which transitionmetal complexes as the sensitizers play a key role. These complexes are different from organic fluorophores because the triplet excited states, instead of the singlet excited states, are populated with a high intersystem crossing (ISC) efficiency upon photoexcitation. Meanwhile, the long-lived triplet excited states in the microsecond range are observed for these complexes. All these properties are favorable when transition-metal complexes, including Ir(III), Pd(II), Pt(II), Ru(II), Zn(II), Re(I), Cu(I), and Au(III) complexes summarized herein, are used as sensitizers for TTA upconversion. Moreover, some examples of organic sensitizers and the applications of TTA upconversion systems are also summarized.

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Using C60-bodipy dyads that show strong absorption of visible light and long-lived triplet excited states as organic triplet photosensitizers for triplet–triplet annihilation upconversion

Cited by 76 publications

References 108 publications

Bodipy Derivatives as Triplet Photosensitizers and the Related Intersystem Crossing Mechanisms

Bodipy Derivatives as Triplet Photosensitizers and the Related Intersystem Crossing Mechanisms

Broadband Visible‐Light‐Harvesting trans‐Bis(alkylphosphine) Platinum(II)‐Alkynyl Complexes with Singlet Energy Transfer between BODIPY and Naphthalene Diimide Ligands

Transition-Metal Complexes for Triplet–Triplet Annihilation-Based Energy Upconversion

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