Conjugated Polymers Containing BODIPY and Fluorene Units for Sensitive Detection of CN− Ions: Site-Selective Synthesis, Photo-Physical and Electrochemical Properties

Tian, He; Tang, Danting; Lin, Cuiling; Shen, Xi; Lu, Chenjie; Xu, Luonan; Gu, Zhengye; Xu, Zheng; Qiu, Huayu; Zhang, Qian; Yin, Shouchun

doi:10.3390/polym9100512

Cited by 18 publications

(7 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to the wide range of absorption and emission spectra of BODIPY derivatives and the characteristics of conjugated chain amplification signal, BODIPY-based conjugated polymers are applied to anion or organic vapor sensors [ 96 , 97 , 98 , 99 ]. Cao and coworkers [ 96 ] presented a new conjugated polymer 72 , synthesized through Sonogashira cross-coupling reaction between BODIPY diiodide and alkynyl fluorene, for the detection of F − and CN − ions ( Figure 24 ).…”

Section: Functional Applications Of Bodipy-based Conjugated Polymementioning

confidence: 99%

Architectures and Applications of BODIPY-Based Conjugated Polymers

et al. 2020

Self Cite

View full text Add to dashboard Cite

Conjugated polymers generally contain conjugated backbone structures with benzene, heterocycle, double bond, or triple bond, so that they have properties similar to semiconductors and even conductors. Their energy band gap is very small and can be adjusted via chemical doping, allowing for excellent photoelectric properties. To obtain prominent conjugated materials, numerous well-designed polymer backbones have been reported, such as polyphenylenevinylene, polyphenylene acetylene, polycarbazole, and polyfluorene. 4,4′-Difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)-based conjugated polymers have also been prepared owing to its conjugated structure and intriguing optical properties, including high absorption coefficients, excellent thermal/photochemical stability, and high quantum yield. Most importantly, the properties of BODIPYs can be easily tuned by chemical modification on the dipyrromethene core, which endows the conjugated polymers with multiple functionalities. In this paper, BODIPY-based conjugated polymers are reviewed, focusing on their structures and applications. The forms of BODIPY-based conjugated polymers include linear, coiled, and porous structures, and their structure–property relationship is explored. Also, typical applications in optoelectronic materials, sensors, gas/energy storage, biotherapy, and bioimaging are presented and discussed in detail. Finally, the review provides an insight into the challenges in the development of BODIPY-based conjugated polymers.

show abstract

Section: Functional Applications Of Bodipy-based Conjugated Polymementioning

confidence: 99%

Architectures and Applications of BODIPY-Based Conjugated Polymers

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…These dyes, which are composed of a dipyrromethene bound to a central BF 2 unit, present an excellent chemical versatility for their use in a myriad of (bio)technological fields, from (bio)medicine [ 17–19 ] to energy conversion in photovoltaic devices, [ 20 ] solid state lasers [ 21 ] or hydrogen production. [ 22–24 ] BODIPY‐based CPPs have been also used as heterogeneous photocatalysts in organic transformations, [ 25,26 ] gases adsorption, [ 27 ] sensing, [ 28,29 ] and electrode materials, [ 30 ] among others. In addition, an analog to BODIPY dyes has emerged in the last few years, known as BOPHYs (boron pyrrol hydrazine, see Figure 1 right).…”

Section: Introductionmentioning

confidence: 99%

Conjugated Porous Polymers Based on BODIPY and BOPHY Dyes in Hybrid Heterojunctions for Artificial Photosynthesis

Collado

Naranjo

Gomez‐Mendoza

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

Developing highly efficient photocatalysts for artificial photosynthesis is one of the grand challenges in solar energy conversion. Among advanced photoactive materials, conjugated porous polymers (CPPs) possess a powerful combination of high surface areas, intrinsic porosity, cross‐linked nature, and fully π‐conjugated electronic systems. Here, based on these fascinating properties, organic–inorganic hybrid heterostructures composed of CPPs and TiO2 for the photocatalytic CO2 reduction and H2 evolution from water are developed. The study is focused on CPPs based on the boron dipyrromethene (BODIPY) and boron pyrrol hydrazine (BOPHY) families of compounds. It is shown that hybrid photocatalysts are active for the conversion of CO2 mainly into CH4 and CO, with CH4 production 4 times over the benchmark TiO2. Hydrogen evolution from water surpassed by 37.9‐times that of TiO2, reaching 200 mmol gcat−1 and photonic efficiency of 20.4% in the presence of Pt co‐catalyst (1 wt% Pt). Advanced photophysical studies, based on time‐resolved photoluminescence and transient absorption spectroscopy, reveal the creation of a type II heterojunction in the hybrids. The unique interfacial interaction between CPPs and TiO2 results in longer carriers’ lifetimes and a higher driving force for electron transfer, opening the door to a new generation of photocatalysts for artificial photosynthesis.

show abstract

“…The redshift in the band edge and one additional peak at 530 nm can be seen in the recovered salophen after the anatase TiO 2 reaction (Figure S5, Supporting Information), possibly because of the elongated conjugation after polymerization. [45,46] To enhance the anatase TiO 2 surface adsorbed salophen polymerization, a visible-light-induced photopolymerization process (Figure S7, Supporting Information) was carried out, in which polymerization of the organic compound occurred by cation radicals, generated by one-hole oxidation of the organic compound. [47,48] We observed a noticeable color change from yellow to dark orange-brown after light irradiation (Figure S6, Supporting Information).…”

Section: Selective Polymerization Of Salophen On Anatase Tio 2 In Ana...mentioning

confidence: 99%

Unveiling a Three Phase Mixed Heterojunction via Phase‐Selective Anchoring of Polymer for Efficient Photocatalysis

Jadhav

Bui

Cho

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

because solar energy is freely available and hydrogen fuel is clean with high gravimetric energy density. For practical applications, it is very important to develop a low-cost water-splitting photocatalyst with an ≈10% solar-to-hydrogen energy conversion. [4] Nearly half of the energy in the sunlight that reaches Earth's surface comes from visible light photons (400-700 nm); therefore, it is important to develop a visible light active photocatalyst for efficient solar-to-fuel conversion. [5] Most of the research on photocatalysts has focused on wide bandgap semiconductors, such as TiO 2 , [6][7][8] SrTiO 3 , [9,10] and carbon nitride (CN). [11][12][13] Some of these photocatalysts have achieved very good operation stabilities that surpass 1000 h, along with more than 50% maximum external quantum efficiency for watersplitting reactions. [14][15][16] However, the wide and difficult-to-tune bandgaps of such photocatalysts restrict light absorption to only the ultraviolet (UV) region and thus fundamentally limit the practical applications for solar light harvesting to fuel. [16,17] Therefore, novel photocatalyst semiconductor materials with narrower bandgaps that can absorb a greater proportion of solar spectrum are needed to achieve the maximum theoretical solar energy conversion efficiency for practical applications.The ligand-to-metal charge transfer (LMCT) facilitated activation of TiO 2 has noteworthy potential for solar energy harvesting. However, the fast back electron transfer from TiO 2 to an oxidized sensitizer is a key limiting factor causing low photocatalyst efficiency. Herein, a new catalyst design to both increase LMCT efficiency and minimize the back electron transfer is presented. A phase-selective modification of mixed-phase TiO 2 (anatase: rutile interface) with poly-salophen organic polymer is developed. The salophen and salen family organic monomers are selectively bound and polymerized on the anatase phase but not the rutile phase, which results in the formation of a three-phase system. Such a three-phase system converts an unfavorable polymer TiO 2 core-shell structure to an intimately mixed blend morphology, consisting of interfaced crystalline rutile TiO 2 and an amorphous polymer-covered anatase-phase TiO 2 . The developed mixed-blend morphology poly-S@P25 can produce H 2 of 37 410 µmol h -1 g -1 of polymer, which is ≈3.4 times higher than core-shell poly-S@anatase TiO 2 . This approach overcomes the drawback of the traditional core-shell structured system for efficient electron harvesting from the LMCT process.

show abstract

Conjugated Polymers Containing BODIPY and Fluorene Units for Sensitive Detection of CN− Ions: Site-Selective Synthesis, Photo-Physical and Electrochemical Properties

Cited by 18 publications

References 33 publications

Architectures and Applications of BODIPY-Based Conjugated Polymers

Architectures and Applications of BODIPY-Based Conjugated Polymers

Conjugated Porous Polymers Based on BODIPY and BOPHY Dyes in Hybrid Heterojunctions for Artificial Photosynthesis

Unveiling a Three Phase Mixed Heterojunction via Phase‐Selective Anchoring of Polymer for Efficient Photocatalysis

Contact Info

Product

Resources

About