New insights into a hydrogen bond: hyper-Raman spectroscopy of DMSO-water solution

Marble, Christopher B.; Xu, Xingqi; Petrov, Georgi I.; Wang, Dawei; Yakovlev, Vladislav V.

doi:10.1039/d1cp02387j

Cited by 14 publications

(13 citation statements)

References 39 publications

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“…DMSO solution is a common model system to demonstrate molecular vibrational dynamics, which has been widely used as a hydrogen-bonding model for biological systems 27 and also as a reagent in chemical studies. 28 It has Through multiple spectroscopic modalities, an interesting phenomenon is found (Figure 4d−f), that is, an oscillation with a period of 0.45 ps and an equivalent frequency of 74 cm −1 occurs around 3000 cm −1 . This is largely due to the energy transfer between the C−H symmetric stretching modeand C−H antisymmetric stretching mode-induced beating.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

“…We first studied the C–H bending mode of DMSO at various concentrations (Figure a) to illustrate the spectral properties by T-CRS spectroscopy. DMSO solution is a common model system to demonstrate molecular vibrational dynamics, which has been widely used as a hydrogen-bonding model for biological systems and also as a reagent in chemical studies . It has distinctive Raman transitions of 2912 and 2999 cm –1 C–H stretching mode, and 1417 cm –1 C–H bending mode, while water has a broad O–H stretching mode in 3200–3400 cm –1 range.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced Chemical Sensing with Multiorder Coherent Raman Scattering Spectroscopic Dephasing

Zhu

Wang

et al. 2022

Anal. Chem.

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Molecular vibrational spectroscopy is widely used in various sensing and imaging applications, providing intrinsic information at the molecular level. Nonlinear optical interactions using ultrashort laser pulses facilitate the selective coherent excitation of molecular vibrational modes by focusing energy into specific molecular bonds, boosting the signal level for multiple orders of magnitude. The dephasing of such coherence, which is susceptible to the local molecular environment, however, is often neglected. The unique capability of vibrational dephasing dynamics to serve as a unique probe for complex molecular interactions and the effect of local nano- and microenvironments are beyond the reach of conventional, intensity-based spectroscopy. Here, we developed a novel multiorder coherent Raman spectroscopy platform with a special focus on the temporal evolution of molecular vibrational dephasing, termed as time-resolved coherent Raman scattering (T-CRS) spectroscopy. By utilizing a high dynamic range detection, molecular vibrational dynamics and the environmental effects are demonstrated with multidimensional spectroscopic sensing, which promises a new range of applications in biology, materials, and chemical sciences.

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Section: ■ Results and Discussionmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Enhanced Chemical Sensing with Multiorder Coherent Raman Scattering Spectroscopic Dephasing

Zhu

Wang

et al. 2022

Anal. Chem.

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“…First, it can further improve the solubility of the polymer. Second, compared with the single-solvent system, the double-solvent system offers a significantly reduced freezing point for maintaining the flexibility of eutectogels at subzero temperatures, which benefits the formation of hydrogen bonds in the gel network from incorporated DES and DMSO . Third, it can dilute the polymer/DES mixture solution and reduce the solution viscosity, making it easy to pour into the mold.…”

Section: Resultsmentioning

confidence: 99%

“…Second, compared with the single-solvent system, the double-solvent system offers a significantly reduced freezing point for maintaining the flexibility of eutectogels at subzero temperatures, which benefits the formation of hydrogen bonds in the gel network from incorporated DES and DMSO. 34 Third, it can dilute the polymer/DES mixture solution and reduce the solution viscosity, making it easy to pour into the mold. Therefore, gelatin-strengthened PVA eutectogels were designed and prepared via an initial dissolution of PVA molecules and subsequent sol−gel transition by the freezing−thawing process (Figure 1b).…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure 6g, after being stored for 30 d under 25 °C, the weight loss rate of the DPG eutectogel did not exceed 20%. The reason was that the combination of DES and DMSO could reduce the saturated vapor pressure of the solvent, 34 making the eutectogel have a better solvent retention capacity. The long-term stability and antidrying behavior of DES and DMSO provide a good foundation for the long-term application of the eutectogel.…”

Section: Mechanical Properties Of the Dpg Eutectogelsmentioning

confidence: 99%

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Poly(vinyl alcohol)/Gelatin-Based Eutectogels for the Sensitive Strain Sensor with Recyclability and Multienvironmental Suitability

Chen

Mai

et al. 2022

ACS Appl. Polym. Mater.

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Flexible gel-based strain sensors have made remarkable progress, emerging as promising candidates for wearable electronic devices. Too much attention was paid to the sensing sensitivity of the conventional gel sensors, and their environmental tolerance and green recyclability were ignored. This work designs a high ion conductive, multienvironmentally adaptable, and recyclable eutectogel, with gelatin-strengthened poly(vinyl alcohol) (PVA) and deep eutectic solvent (DES) as the gelator and disperser, respectively. Interestingly, the cross-linked network composed of PVA and gelatin polymer molecules endows the eutectogel with an ultimate tensile strength of 6.8 MPa. Moreover, the ionic liquid-like characteristic of DES at room temperature and abundant hydrogen bonds in DES can simultaneously improve the ionic conductivity (0.12 S/m) and environmental tolerance of the eutectogel. A reliable strain sensor based on this eutectogel exhibits high stability over a wide temperature range (−20∼100 °C) and harsh chemical environments (acid and base). Furthermore, this recyclable eutectogel can be easily disintegrated and regelatinized via a simple solvation–evaporation procedure, while retaining its initial mechanical and sensing performances. This study creates a candidate for applications in wearable electronic devices and sheds light on minimizing the environmental impact of other electronic wastes.

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Mechanically Strong and Tough Organohydrogels for Wide Temperature Tolerant, Flexible Solid‐State Supercapacitors

Zhou,

Griffin,

Qian

et al. 2024

Adv Funct Materials

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Hydrogel‐based flexible solid‐state supercapacitors (SSCs) hold great promise for wearable electronics, yet significant challenges persist in simultaneously achieving excellent mechanical properties, high ionic conductivity, outstanding electrochemical properties, and wide operating temperature ranges. Here, this study presents a straightforward method for synthesizing dual crosslinked polyvinyl alcohol‐polyimide (PVA‐PI) organohydrogels via a simple one‐pot synthesis followed by a freezing‐thawing process. The controlled dual crosslinked networks with significanonetly different crosslinking densities and robust intermolecular hydrogen bonding interactions facilitated by the macromolecular crosslinker of PI, endow the organohydrogels with both high mechanical properties and ionic conductivity. Furthermore, SSCs based on PVA‐PI organohydrogels are fabricated, which can exhibit outstanding electrochemical performance at temperatures ranging from −40 to 80 °C. Specifically, the energy density reaches 16.7 µWh cm−2 even at −40 °C under a power density of 410.0 µW cm−2. These SSCs also show excellent performance stability under various deformations, such as bending and compression, alongside exceptional long‐term cycling stability (over 10 000 cycles) with high capacitance retention from −40 to 50 °C. The synthesis strategy, along with a robust mechanism for enhancing mechanical properties of hydrogels, demonstrated in this study offers insights for the development of strong hydrogels/organohydrogels with broad temperature adaptability for soft electronic applications.

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New insights into a hydrogen bond: hyper-Raman spectroscopy of DMSO-water solution

Abstract: Hydrogen bonding plays an essential role in biological processes by stabilizing proteins and lipid structures as well as controlling the speed of enzyme catalyzed reactions. Dimethyl sulfoxide-water (DMSO-H2O) solution serves...

Cited by 14 publications

References 39 publications

Enhanced Chemical Sensing with Multiorder Coherent Raman Scattering Spectroscopic Dephasing

Enhanced Chemical Sensing with Multiorder Coherent Raman Scattering Spectroscopic Dephasing

Poly(vinyl alcohol)/Gelatin-Based Eutectogels for the Sensitive Strain Sensor with Recyclability and Multienvironmental Suitability

Mechanically Strong and Tough Organohydrogels for Wide Temperature Tolerant, Flexible Solid‐State Supercapacitors

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