Exploring solvatochromism: A comprehensive analysis of research data

Homocianu, Mihaela

doi:10.1016/j.microc.2024.110166

Cited by 6 publications

(2 citation statements)

References 159 publications

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“…This confirms the solvation interaction between HFIP molecules and polymer chains. A slight hypsochromic shift of the λ max was observed from the HFIP solution to the solid state, indicating a transition from the solvation structure to the π−π* stacking structure . When using MS as a solvent, it was observed that the P-3O chains started to aggregate rapidly after 3 s, accompanied by a gradual bathochromic shift of the λ max .…”

Section: Results and Discussionmentioning

confidence: 97%

“…A slight hypsochromic shift of the λ max was observed from the HFIP solution to the solid state, indicating a transition from the solvation structure to the π−π* stacking structure. 34 When using MS as a solvent, it was observed that the P-3O chains started to aggregate rapidly after 3 s, accompanied by a gradual bathochromic shift of the λ max . The varied λ max values of the P-3O film processed from different solvents indicate that modifying the processing solvent can lead to changes in the molecular packing.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Tailoring the Density of State of n-Type Conjugated Polymers through Solvent Engineering for Organic Electrochemical Transistors

Zhang,

Kuang,

et al. 2024

ACS Appl. Mater. Interfaces

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Conjugated polymers with ethylene glycol-type side chains are commonly used as channel materials in organic electrochemical transistors (OECTs). To improve the performance of these materials, new chemical structures are often created through synthetic routines. Herein, we demonstrate that the OECT performance of these polymers can also be improved by changing their density-of-state (DOS) profile through solvent engineering. Depending on the solvent polarity, it solvates the backbone and side chains of the conjugated polymer differently, leading to differences in molecule orientation, π-stacking paracrystallinity, and film defects, such as grain boundaries and pinholes. This then results in a change in the DOS profile of the polymer. A more intense and narrow-width DOS distribution is usually observed in organic films with an “edge on” orientation and fewer film defects, while films with a “face on” orientation and apparent defects show a broadened DOS profile. The OECT devices that use the polymer film with a more intense and narrow-width DOS profile exhibit a better-normalized transconductance and figure-of-merit μC* than those with a broadened DOS profile (0.74 to 4.29 S cm−1 and 3.5 to 14.3 F cm−1 V−1 s−1). This study provides useful insights into how the DOS profile affects the mixed ionic-electronic conduction performance and presents a new avenue for improving n-type OECT materials.

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Section: Results and Discussionmentioning

confidence: 97%

Section: ■ Results and Discussionmentioning

confidence: 99%

Tailoring the Density of State of n-Type Conjugated Polymers through Solvent Engineering for Organic Electrochemical Transistors

Zhang,

Kuang,

et al. 2024

ACS Appl. Mater. Interfaces

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Photo-Physical Characteristics of Janus Green B in Different Solvents and its Interaction Mechanism with Silver Nanoparticles

Gawad,

Ghazy,

Mansour

et al. 2024

J Fluoresc

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This work explores the effects of solvent polarity on Janus Green B (JGB) photophysical properties. The Lippert-Mataga, Billot, and Ravi equations were utilized to calculate the singlet-state excited dipole moments (µe) and ground state dipole moments (µg) using absorption and fluorescence spectra analyses. The results showed an increase in the former, which is suggestive of electronic structural alterations upon excitation. Analysis of fluorescence quantum yield values revealed that JGB’s environment had an impact on its emission characteristics; it was particularly sensitive to silver nanoparticles, suggesting possible interactions. While simulations of electron density, electrostatic potential, and energy gap (Eg) helped to understand the electronic structure of JGB, theoretical absorption spectra produced by Time Dependent Density Function Theory (TD-DFT) calculations offered insights into electronic transitions during absorption. To sum up, the present study contributes to our comprehension of the molecular behavior of JGB in various solvents by elucidating the intricate relationship among solvent polarity, molecular environment, and interactions with silver nanoparticles. Additionally, theoretical computations support the interpretation of experimental results.

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Tuning the push-pull dyes: Construction of polarity insensitive probes for G4 DNA

Chen,

Tan,

et al. 2024

Dyes and Pigments

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Exploring solvatochromism: A comprehensive analysis of research data

Cited by 6 publications

References 159 publications

Tailoring the Density of State of n-Type Conjugated Polymers through Solvent Engineering for Organic Electrochemical Transistors

Tailoring the Density of State of n-Type Conjugated Polymers through Solvent Engineering for Organic Electrochemical Transistors

Photo-Physical Characteristics of Janus Green B in Different Solvents and its Interaction Mechanism with Silver Nanoparticles

Tuning the push-pull dyes: Construction of polarity insensitive probes for G4 DNA

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