Enhancement of the degradation ability for organic pollutants via the synergistic effect of photoelectrocatalysis on a self-assembled perylene diimide (SA-PDI) thin film

Miao, Hong; Yang, Jun; Peng, Guilong; Li, Huiquan; Zhu, Yongfa

doi:10.1016/j.scib.2019.05.006

Cited by 36 publications

(16 citation statements)

References 58 publications

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“…Strictly different from those of the discrete AD dimer in AD-IPA ( Figure 1 c) and AD-IPB ( Figure 1 e), the AD molecules in AD-TMA are arranged into an infinite π-conjugated chain featuring compact H-aggregation ( Figure 1 g), which is expected to benefit the migration of charge carriers. 24 Among the reported AD-based polymorphs and multicomponent complexes, 22 only one example of organic–inorganic hybrid perovskite [(AD)Pb 2 Cl 5 ] possesses such a packing arrangement, 21 in which the orderly arrangement of the organic AD cation layers is confined between the rigid lead chloride inorganic layer ( Figure S7 ). In AD-TMA, the infinite AD chains are fixed between TMA-H 2 O layers via N–H···O and C–H···O hydrogen bonds.…”

Section: Resultsmentioning

confidence: 99%

Fast Crystallization-Deposition of Orderly Molecule Level Heterojunction Thin Films Showing Tunable Up-Conversion and Ultrahigh Photoelectric Response

et al. 2020

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Molecular cocrystals have received much attention for tuning physicochemical properties in pharmaceutics, luminescence, organic electronics, and so on. However, the effective methods for the formation of orderly cocrystal thin films are still rather limited, which have largely restricted their photofunctional and optoelectronic applications. In this work, a fast crystallization-deposition procedure is put forward to obtain acridine (AD)-based cocrystals, which are self-assembled with three typical isophthalic acid derivatives (IPA, IPB, and TMA). The obtained donor–acceptor cocrystal complexes exhibit an adjustable energy level, wide range of photoluminescence color, and rotational angle-dependent polarized emission. The orderly and uniform cocrystal thin films further present tunable one-/two-photon up-conversion and different semiconductor properties. Particularly, AD-TMA cocrystal thin film shows a rare example of a molecule level heterojunction with the alternating arrangement of AD electronic acceptor layers and TMA electronic donor layers, and thus, provides a way for efficient mobility and separation of electron–hole pairs. A large on–off photocurrent ratio of more than 10 4 can be achieved for the AD-TMA thin film, which is higher than state-of-the-art molecular semiconductor systems. Therefore, this work extends the application scopes of orderly cocrystal thin film materials for future luminescent and optoelectronic micro-/nanodevices.

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Section: Resultsmentioning

confidence: 99%

Fast Crystallization-Deposition of Orderly Molecule Level Heterojunction Thin Films Showing Tunable Up-Conversion and Ultrahigh Photoelectric Response

et al. 2020

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“…Boasting the natural virtues of fascinating photophysical properties (e.g., longer excitation wavelength, high uorescence quantum yield, long uorescence lifetime, and the stability to light and thermalexposure), perylene bisimide (PBI) is a recurring and overwhelming motif in various elds of solar photovoltaics [1][2][3][4], organic electronic devices [5,6], photoelectrocatalysis [7], photoisomerization [8], nearinfrared photothermal conversion [9], phosphorescence [10], moisture detection [11], bioimaging [12,13], theranostics [14,15], and biosensing/bioassay [16]. Additionally, the self-assembled π-π interaction of perylene core plays a decisive role in its functional characteristic and renders it possible to develop various supramolecular species involving host-guest recognition [17,18], gelator [19][20][21], LCs [22], and so on.…”

Section: Introductionmentioning

confidence: 99%

Fluorescein-bridged Perylene Bisimide Dimer for Use as Liquid Crystal: Studies on Mesomorphic and Fluorescence Properties

et al. 2021

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A novel uorescein-bridged perylene bisimide (PBI) dimer for liquid crystal (LC) with geometrically symmetric structure was developed. The mesomorphic results indicated that the energetically stable and unstable conformers of uorescein fragments could lead to the transformation of mesophases from a hexagonal columnar mesophase to an uncertain phase at 136.9 °C in heating, whilst a stable hexagonal columnar mesophase maintained between 175.6 °C and 58.6 °C in cooling. The selectively excited uorescence characters in THF solution demonstrated that the uorescence resonance energy transfer (FRET) effect between uorescein fragments and PBI unites could provide a means to effectively impose strong uorescence of the dimeric PBIs modi ed with suitable chromophore at the N-imide position, which alternatively serves as a platform for the further study of multi-functional PBI-based LCs.

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“…Subsequently, it was heated at 400 °C for 1 h with a heating rate of 15 °C•min −1 , followed by heating at 500 °C for 2 h. After cooling down to room temperature and sieving, the obtained light yellow powder was marked as S-C3N4. 2.1.3 Preparation of N,N'-bis(propionic acid)-perylene-3,4,9,10-tetracarboxylic diimide N,N'-bis(propionic acid)-perylene-3,4,9,10-tetracarboxylic diimide was synthesized according to the strategy reported in the reference 46 . Generally, 17.700 g (0.26 mol) imidazole, 1.373 g (3.5 mmol) perylene-3,4,9,10-tetracarboxylic dianhydride and 2.495 g (28 mmol) β-alanine were added in a 100 mL threenecked flask.…”

Section: Preparation Of Sulfur-doped Carbon Nitride (S-c3n4)mentioning

confidence: 99%

“…As a new organic semiconductor, perylene diimide (PDI) possesses high stability and relatively small band gap 45 . It has a strong response to visible light and even near-infrared light, which greatly enhances its utilization of solar energy 46,47 . Zhang et al 48 synthesized Bi2WO6/PDI composite by an in situ selfassembly method.…”

Section: Introductionmentioning

confidence: 99%

All Organic S-Scheme Heterojunction PDI-Ala/S-C<sub>3</sub>N<sub>4</sub> Photocatalyst with Enhanced Photocatalytic Performance

李喜宝¹,

刘积有²,

黄军同³

et al. 2020

Acta Physico Chimica Sinica

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Organic photocatalysts have attracted attention owing to their suitable redox band positions, low cost, high chemical stability, and good tunability of their framework and electronic structure. As a novel organic photocatalyst, PDI-Ala (N,N'-bis(propionic acid)-perylene-3,4,9,10tetracarboxylic diimide) has strong visible-light response, low valence band position, and strong oxidation ability. However, the low photogenerated charge transfer rate and high carrier recombination rate limit its application. Due to the aromatic heterocyclic structure of g-C3N4 and large delocalized π bond in the planar structure of PDI-Ala, g-C3N4 and PDI-Ala can be tightly combined through π-π interactions and N-C bond. The band structure of sulfur-doped g-C3N4 (S-C3N4) matched well with PDI-Ala than that with g-C3N4. The electron delocalization effect, internal electric field, and newly formed chemical bond jointly promote the separation and migration of photogenerated carriers between PDI-Ala and S-C3N4. To this end, a novel step-scheme (Sscheme) heterojunction photocatalyst comprising organic semiconductor PDI-Ala and S-C3N4 was prepared by an in situ self-assembly strategy. Meanwhile, PDI-Ala was self-assembled by transverse hydrogen bonding and longitudinal π-π stacking. The crystal structure, morphology, valency, optical properties, stability, and energy band structure of the PDI-Ala/S-C3N4 photocatalysts were systematically analyzed and studied by various characterization methods such as X-ray diffraction, transmission electron microscopy, energy dispersive X-ray spectrometry, X-ray photoelectron spectroscopy, ultraviolet visible diffuse reflectance spectroscopy, electrochemical impedance spectroscopy, and Mott-Schottky curve. The work functions and interface coupling characteristics were determined using density functional theory. The photocatalytic activities of the synthesized photocatalyst for H2O2 production and the degradation of tetracycline (TC) and p-nitrophenol (PNP) under visible-light irradiation are discussed. The PDI-Ala/S-C3N4 S-scheme heterojunction with band matching and tight interface bonding accelerates the intermolecular electron transfer and broadens the visible-light response range of the heterojunction. In addition, in the processes of the PDI-Ala/S-C3N4 photocatalytic degradation reaction, a variety of active species (h + , •O2 − , and H2O2) were produced and accumulated. Therefore, the PDI-Ala/S-C3N4 heterojunction exhibited enhanced photocatalytic performance in the degradation of TC, PNP, and H2O2 production. Under visible-light irradiation, the optimum 30%PDI-Ala/S-C3N4 removed 90% of TC within 90 min. In addition, 30%PDI-Ala/S-C3N4 displayed the highest H2O2 evolution rate of 28.3 μmol•h −1 •g −1 , which was 2.9 and 1.6 times higher than those of PDI-Ala and S-C3N4,

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Enhancement of the degradation ability for organic pollutants via the synergistic effect of photoelectrocatalysis on a self-assembled perylene diimide (SA-PDI) thin film

Cited by 36 publications

References 58 publications

Fast Crystallization-Deposition of Orderly Molecule Level Heterojunction Thin Films Showing Tunable Up-Conversion and Ultrahigh Photoelectric Response

Fast Crystallization-Deposition of Orderly Molecule Level Heterojunction Thin Films Showing Tunable Up-Conversion and Ultrahigh Photoelectric Response

Fluorescein-bridged Perylene Bisimide Dimer for Use as Liquid Crystal: Studies on Mesomorphic and Fluorescence Properties

All Organic S-Scheme Heterojunction PDI-Ala/S-C<sub>3</sub>N<sub>4</sub> Photocatalyst with Enhanced Photocatalytic Performance

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