Influence of the non-conjugated 5-position substituent of 1,3,5-triaryl-2-pyrazoline-based photosensitizers on the photophysical properties and performance of a dye-sensitized solar cell

Mori, Takeshi; Saomoto, Hitoshi; Machitani, Koji; Inoue, Kaname; Aoki, Yasunori; Koshitani, Takeshi; Koumura, Nagatoshi; Murakami, Takurou N.

doi:10.1039/c6ra00738d

Cited by 22 publications

(9 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another is that the nature of the excited state is conducive to SC bond fracture, and the generated cationic radical or neutral radical has high stability. Stilbene‐based sulfonium salts exhibit good absorption properties by adjusting the substituents 33 . However, photoisomerization will exhaust the energy of the excited state.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Promotion of the photoacid generation performance of sulfonium salts by inhibiting the isomerization of conjugated systems using a cyclization strategy

Wei

Chen

Wan

et al. 2021

Journal of Polymer Science

View full text Add to dashboard Cite

This work describes an original structureÀreactivity relationship within a series of sulfonium salts synthesized using a cyclization strategy. The new sulfonium salt comprises a stilbene subunit decorated with a combination of cyclized structure, that is, carbocyclic ring, furan ring, and thiophene ring, to inhibit the isomerization of double bond systems. The photoacid generation efficiency of such cyclized stilbene derivative sulfonium salts is mainly modulated by the five-membered ring structures and the substituent as confirmed by photodegradation, in situ nuclear magnetic resonance, and cyclic voltammetry. Such cyclization drastically regulates the population of highly reactive excited singlet species and thus enhances the photoacid generation performance of the sulfonium salts by more than one order of magnitude within the series, especially when introducing oxygen to form the benzofuran ring structure. Given this amplified photoreactivity, the application potential of the photoinitiated cationic polymerization of the sulfonium salts was evaluated at different irradiation wavelengths.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Stilbene-based sulfonium salts exhibit good absorption properties by adjusting the substituents. 33 However, photoisomerization will exhaust the energy of the excited state. Inhibiting this process can improve the quantum yield of photoacid generation (Φ H + ).…”

Section: Molecular Designmentioning

confidence: 99%

Promotion of the photoacid generation performance of sulfonium salts by inhibiting the isomerization of conjugated systems using a cyclization strategy

Wei

Chen

Wan

et al. 2021

Journal of Polymer Science

View full text Add to dashboard Cite

show abstract

“…On studying the effect of the non-conjugated 5position substituent of pyrazoline-based photosensitizers on the photophysical characteristics and performance of dyesensitized solar cells (DSSCs), a trend of increasing absorption maxima, electrochemical characteristics and DSSC performances was observed with increasing electron-donating ability. 41 The pervasiveness of this heterocycle leads to multiple useful properties and has stimulated the need for facile and efficient ways to make these heterocyclic cores. Moreover, the incorporation of the pyrazoline moiety and other electron-donors/ acceptors into one molecule is one of the most actively pursued areas of research involving fascinating diverse heterocycles, and seems to be a good choice for many applications.…”

Section: A Quick Look At the General-to-specic Background Of Pyrazolinesmentioning

confidence: 99%

Unveiling a versatile heterocycle: pyrazoline – a review

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Pyrazolines were well known for their pharmacological properties, and also, the presence of many hetero atoms in the molecule induces excellent blue fluorescence. These emission properties were used in dye-sensitized based solar cells, optical emitting, hole transfer materials [21][22][23][24], etc.…”

Section: Introductionmentioning

confidence: 99%

A Review on Metal Ion Sensors Derived from Chalcone Precursor

2022

View full text Add to dashboard Cite

Disclosure of new molecular probes as chromogenic and fluorogenic cation sensors is scientifically exigent work. Recently chalcone derivatives gained more attention because of their structural variability. A suitable donor and acceptor groups separated by delocalized π-orbitals display excellent chromogenic and fluorogenic properties because of intramolecular charge transfer (ICT). These designed molecular frameworks provide the coordination sites to the incoming metal ions results in small changes in the optical properties. In a typical sensing behavior, coordination leads to a large conjugation plane with the probe resulted in hypo/hyperchromic shifts or red/blue shifts. In this review, we tried to converge the reported chalcone-derived sensors and explored the design, synthesis, metal ion sensing mechanism, and practical application of the probes. We expect that this review gives a basic outline for researchers to explore the field of chalcone-based sensors further.

show abstract

Influence of the non-conjugated 5-position substituent of 1,3,5-triaryl-2-pyrazoline-based photosensitizers on the photophysical properties and performance of a dye-sensitized solar cell

Abstract: We report the effect of the non-conjugated 5-position substituent of pyrazoline-based photosensitizers on the photophysical characteristics and performance of dye-sensitized solar cells (DSSCs).

Cited by 22 publications

References 46 publications

Promotion of the photoacid generation performance of sulfonium salts by inhibiting the isomerization of conjugated systems using a cyclization strategy

Promotion of the photoacid generation performance of sulfonium salts by inhibiting the isomerization of conjugated systems using a cyclization strategy

Unveiling a versatile heterocycle: pyrazoline – a review

A Review on Metal Ion Sensors Derived from Chalcone Precursor

Contact Info

Product

Resources

About