Supramolecular G4 Eutectogels of Guanosine with Solvent‐Induced Chiral Inversion and Excellent Electrochromic Activity

Gu, Chaonan; Peng, Yu; Li, Jingjing; Wang, Hai; Xie, Xiao‐Qiao; Cao, Xiaoyu; Liu, Chun‐Sen

doi:10.1002/anie.202009332

Cited by 97 publications

(70 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, poor lifetime stability of guanosine hydrogels restricts them to use for various applications. In this regard, more stable guanosine‐borate based multicomponent self‐assembled hydrogels [20] have been recognized in potential biological applications such as antibacterial activity, [21] antitumor activity, [22] drug delivery, [23,24] 3D bio‐printing [25] and other areas such as sensor, electronic device [26–28] . However, to the best of our knowledge, boronate ester directed G‐quadruplex hydrogels have not been explored as a template for in situ synthesis of metal NPs.…”

Section: Introductionmentioning

confidence: 99%

Pt Nanoparticles Supported on a Dynamic Boronate Ester‐Based G‐quadruplex Hydrogel as a Nanoreactor

Ghosh

Biswas

Bhowmik

et al. 2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

Herein, we have reported a dynamic boronic ester mediated guanosine (G) based G-quadruplex hydrogel as an ideal template for in situ and 'green chemical' approach for the synthesis and stabilization of Pt NPs. 11 B NMR and FT-IR spectra reveal the formation of dynamic boronate ester bonds. The TEM images of the G-quadruplex hydrogel reveal entangled three-dimensional (3D) crosslink nanofibrillar networks with average diameter of 20 nm. Similarly, AFM images of the hydrogel show dense nanofibrillar assembly with an average height of 6 nm. The in situ generated Pt NPs have been characterized using TEM and XPS techniques. The average size of the nanofiber supported Pt NPs is 1.5 nm. The Pt NPs embedded G-quadruplex hydrogel shows better mechanical stiffness than the native hydrogel as the storage modulus (G') increases to 2250 Pa from 317.08 Pa after the in situ generation of Pt NPs. Furthermore, G-quadruplex hydrogel supported Pt NPs have been used as a catalytic system for hydrogenation reaction of different aromatic nitro compounds in aqueous medium. The use of G-quadruplex molecular system as a template for the synthesis and stabilization of metal NPs would be an interesting area of research.

show abstract

Section: Introductionmentioning

confidence: 99%

Pt Nanoparticles Supported on a Dynamic Boronate Ester‐Based G‐quadruplex Hydrogel as a Nanoreactor

Ghosh

Biswas

Bhowmik

et al. 2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

“…Open the tin can, immediately add coca cola with sugar (CCS) into the cup and reach the five centimeter tick mark, start the stopwatch, measure and record the read on the multimeter every five seconds for 41 minutes. Stop the watch and return it to zero; clear, wash, and dry the cup; dry the electrodes [4] . Add coca cola without sugar (CC) into the cup and reach the five centimeter tick mark, start the stopwatch, measure the read on the multimeter every five seconds for 41 minutes.…”

Section: Methodsmentioning

confidence: 99%

“…Coca cola with and without sugar was added separately into the cup and reach the five centimeter tick mark. The aluminum bar reaches the bottom of the cup, while 1.5 centimeter of the copper bar is submerged under the electrolyte [4] .…”

Section: Settingmentioning

confidence: 99%

A Comparison on the Voltage Output of Al-Cu Primary Battery with its Electrolyte being Coca Cola With and Without Sugar

2021

IMS

View full text Add to dashboard Cite

<div>For the primary battery, different electrolyte will affect the voltage output of the battery. In this paper, the influence of sugar on the output voltage was studied by taking Coca Cola as an example. The results show that there is a certain difference between the effect of electrolyte with and without sugar, but the specific reason is not clear, because the formula of beverage is a secret. Further experiments are needed to draw a conclusion.</div><p> </p><p> </p>

show abstract

“…Although partial CD signals showed inversion, the Cotton effect was still negative at the long-wavelength range, strongly suggesting the formation of a homodirectional PP complex (PP-1⊃G 2 ). The confined space of the cage could change the syn-and anti-conformations of ribose units in G and G 2 , 118,119,123,124 which could influence the pyridinium-phenylene torsional angles of the TPE units to induce partial CD inversion. Furthermore, excess G did not cause obvious changes in the dissymmetry factor, supporting the saturated binding ratio of 1 and G being 1:2 (Figure 5d, inset).…”

Section: Chiroptical Propertiesmentioning

confidence: 99%

Adaptive Chirality of an Achiral Cage: Chirality Transfer, Induction, and Circularly Polarized Luminescence through Aqueous Host–Guest Complexation

Lin

Duan

et al. 2021

CCS Chem

View full text Add to dashboard Cite

Chirality transfer, induction, and circularly polarized luminescence (CPL) using supramolecular hosts, such as macrocycles and cages, have been explored for wide-ranging applications in chiral recognition, sensing, catalysis, and chiroptical functional materials. Herein, we report the adaptive chirality of an achiral tetraphenylethene (TPE)-based octacationic cage (1) induced by binding with enantiopure deoxynucleotides (A, T, C, and G) through host-guest (H-G) complexation inwater. The hydrophobic cavity of the cage efficiently stabilizes the hydrogen-bonded dimerization of deoxynucleotides (A 2 , T 2 , C 2 , and G 2 ) to form H-G complexes in 1∶2 ratios. Given the photophysical properties and dynamic rotational conformation of the TPE units of the cage, cage⊃ deoxynucleotide complexes exhibited excellent chiroptical properties based on chirality transfer and induction from the chiral guest to the achiral host. For this supramolecular system, the cage showed a unique adaptive chirality of the double clockwise-typed (PP) rotational conformation of the two TPE units, which was induced by chiral guests (e.g., A 2 , T 2 , C 2 , and G 2 ) through H-G complexation in water. Furthermore, the adaptive chirality of the cage⊃deoxynucleotide complexes successfully induced CPL signals in homogeneous aqueous solutions. This study provides insights for the construction of adaptive chirality from an achiral TPE-based octacationic cage with dynamic conformational nature, and might facilitate further design of chiral functional materials for several applications, such as chiral recognition, sensing, displays, catalysis, and other chiral fluorescent supramolecular systems based on aqueous H-G complexation.

show abstract

Supramolecular G4 Eutectogels of Guanosine with Solvent‐Induced Chiral Inversion and Excellent Electrochromic Activity

Cited by 97 publications

References 60 publications

Pt Nanoparticles Supported on a Dynamic Boronate Ester‐Based G‐quadruplex Hydrogel as a Nanoreactor

Pt Nanoparticles Supported on a Dynamic Boronate Ester‐Based G‐quadruplex Hydrogel as a Nanoreactor

A Comparison on the Voltage Output of Al-Cu Primary Battery with its Electrolyte being Coca Cola With and Without Sugar

Adaptive Chirality of an Achiral Cage: Chirality Transfer, Induction, and Circularly Polarized Luminescence through Aqueous Host–Guest Complexation

Contact Info

Product

Resources

About