Visible-light photooxidation in water by <sup>1</sup>O<sub>2</sub>-generating supramolecular hydrogels

Biswas, Sankarsan; Kumar, Mohit; Levine, A. M.; Jimenez, Ian; Ulijn, Rein V.; Braunschweig, Adam B.

doi:10.1039/c9sc06481h

Cited by 23 publications

(22 citation statements)

References 70 publications

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“…Supramolecular gels have attracted increasing attention as one of the important soft materials, which are assembled from small molecules via non-covalent interactions including metal-ligand coordination, hydrogen bonding, electrostatic interactions, and π-π stacking. [1,2] Their properties can be tuned by the choice of small molecular gelators. [3][4][5] and the cross-linking of gelators.…”

Section: Introductionmentioning

confidence: 99%

Self‐Foaming Metal‐Organic Gels Based on Phytic Acid and Their Mechanical, Moldable, and Load‐Bearing Properties.

Xiao

Gong

Zhang

2021

Chemistry A European J

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A catalogue of metal‐organic gels are synthesized from phytic acid (PA) and a diversity of metal ions (Fe3+, Cr3+, Al3+, Ce3+, Y3+, Co2+, Ni2+, Mn2+, Cu2+, Zn2+, Mg2+) upon heating at 80 °C. PA−M gels have various morphologies, including irregular granular (PA−Fe, PA−Al, PA−Ce, PA−Cr, PA−Ni, PA−Co), spongy (PA−Y), and hollow tremella‐like (PA−Cu) morphologies. Interestingly for PA−Fe‐1 : 4 (PA:Fe3+=1 : 4) a large amount of gas is generated during the gelation process leading to a self‐foaming gel. The PA−Fe‐1 : 4 self‐foaming gel shows reversible gel‐sol phase transition. The gel is unusually weakened and transformed into a sol at room temperature, and the sol is reversed to gelation when heated again at 80 °C. PA−Fe‐1 : 4 gel also shows shapeable and load‐bearing properties, and it can bear up to 200 times of its weight, depending on the gas amount fixed in the foam gel and the aging time. This work provides a catalogue of self‐foaming supramolecular gels with tunable properties based on naturally abundant resources.

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Section: Introductionmentioning

confidence: 99%

Self‐Foaming Metal‐Organic Gels Based on Phytic Acid and Their Mechanical, Moldable, and Load‐Bearing Properties.

Xiao

Gong

Zhang

2021

Chemistry A European J

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“…Recently, several emerging properties 26,[36][37][38][39][40][41][42][43] of planar fluorophores have been observed in mixed solvents. One of them is supramolecular gelation [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61] . It is clear from the gelation table that the gelator is insoluble in water and soluble in DMSO.…”

Section: Resultsmentioning

confidence: 99%

Supramolecular assemblies of a 1,8-naphthalimide conjugate and its aggregation-induced emission property

et al. 2020

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“…4 Following decoupling, these triplets can be harvested via charge/exciton transfer 5−7 or used for photocatalysis. 8 ↔ ↔ × S (TT) 2 (T)…”

Section: ■ Introductionmentioning

confidence: 99%

Efficient Free Triplet Generation Follows Singlet Fission in Diketopyrrolopyrrole Polymorphs with Goldilocks Coupling

Levine

et al. 2021

J. Phys. Chem. C

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Microcrystal electron diffraction, grazing incidence wideangle scattering, and UV−vis spectroscopy were used to determine the unit-cell structure and the relative composition of dimethylated diketopyrrolopyrrole H-and J-polymorphs within thin films subjected to vapor solvent annealing (VSA) for different times. The electronic structure and excited-state deactivation pathways of the different polymorphs were examined by transient absorption spectroscopy, conductive probe atomic force microscopy, and molecular modeling. We find that VSA initially converts amorphous films into mixtures of H-and J-polymorphs and promotes further conversion from H to J with longer VSA times. Though both polymorphs exhibit efficient SF to form coupled triplets, free triplet yields are higher in J-polymorph films compared to mixed films because coupling in J-aggregates is lower and, in turn, more favorable for triplet decoupling.

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Visible-light photooxidation in water by ¹O₂-generating supramolecular hydrogels

Abstract: An aqueous photocatalytic system exploits photophysical properties arising from the formation of supramolecular hydrogels, with properties and assembly modulated by the amino acids appended to an organic chromophore.

Cited by 23 publications

References 70 publications

Self‐Foaming Metal‐Organic Gels Based on Phytic Acid and Their Mechanical, Moldable, and Load‐Bearing Properties.

Self‐Foaming Metal‐Organic Gels Based on Phytic Acid and Their Mechanical, Moldable, and Load‐Bearing Properties.

Supramolecular assemblies of a 1,8-naphthalimide conjugate and its aggregation-induced emission property

Efficient Free Triplet Generation Follows Singlet Fission in Diketopyrrolopyrrole Polymorphs with Goldilocks Coupling

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Visible-light photooxidation in water by 1O2-generating supramolecular hydrogels

Abstract: An aqueous photocatalytic system exploits photophysical properties arising from the formation of supramolecular hydrogels, with properties and assembly modulated by the amino acids appended to an organic chromophore.

Cited by 23 publications

References 70 publications

Self‐Foaming Metal‐Organic Gels Based on Phytic Acid and Their Mechanical, Moldable, and Load‐Bearing Properties.

Self‐Foaming Metal‐Organic Gels Based on Phytic Acid and Their Mechanical, Moldable, and Load‐Bearing Properties.

Supramolecular assemblies of a 1,8-naphthalimide conjugate and its aggregation-induced emission property

Efficient Free Triplet Generation Follows Singlet Fission in Diketopyrrolopyrrole Polymorphs with Goldilocks Coupling

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Product

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Visible-light photooxidation in water by ¹O₂-generating supramolecular hydrogels