Carbon nitride of five-membered rings with low optical bandgap for photoelectrochemical biosensing

Yang, Hong; Zhou, Qing; Fang, Zhengzou; Li, Wang; Zheng, Y.; Ma, Jin; Wang, Zhuang; Zhao, Lufang; Liu, Songqin; Shen, Yanfei; Zhang, Hongjie

doi:10.1016/j.chempr.2021.06.010

Cited by 81 publications

(50 citation statements)

References 61 publications

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“…73,810−816 For example, distinct from traditional six-member ring carbon nitride, a novel fivemember ring (imidazole) containing carbon nitride with C 3 N 2 stoichiometric composition and C−C bridging coordination can demonstrate a band gap as low as 0.81 eV and is employed for PEC biosensing applications. 814 Apart from photo/photoelectrochemical applications, the new band gap tuned carbon nitride containing 2D/2D heterojunctions will find applications in other fields including optoelectronic device, FET, LEDs/OLEDs, organic solar cells, etc. As CTF, PTI, and PHI iso-element conjugates (C x N y ), there exists no distinct boundary.…”

Section: Carbon Nitride−carbon 2d/2d Vdw Structuresmentioning

confidence: 99%

“…839,840 Several new variants of the C x N y family with an entirely different stoichiometric C:N ratio such as C 2 N, C 3 N, C 3 N 2 , C 3 N 3 , C 4 N 3 , C 3 N 5 , and C 3 N 6 and novel photophysical behavior have been synthesized in recent years to conquer the drawbacks of conventional C 3 N 4 . 810,813,814,841 Another grueling issue with carbon nitride-based 2D/2D heterojunctions is the indigent surface adsorption of the reactant and poor adsorption−desorption kinetics. Surface engineering of carbon nitride by introducing certain functional groups/units with a high affinity for reactants can solve this problem.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

“…With the advent of new 2D polymeric semiconductor materials such as C 2 N, C 3 N, C 3 N 2 , C 3 N 3 , C 4 N 3 , C 3 N 5 , C 3 N 6 , etc., the choices of fabrication of 2D/2D vdW heterojunctions are expanding (Figure , Table ). ,− For example, distinct from traditional six-member ring carbon nitride, a novel five-member ring (imidazole) containing carbon nitride with C 3 N 2 stoichiometric composition and C–C bridging coordination can demonstrate a band gap as low as 0.81 eV and is employed for PEC biosensing applications . Apart from photo/photoelectrochemical applications, the new band gap tuned carbon nitride containing 2D/2D heterojunctions will find applications in other fields including optoelectronic device, FET, LEDs/OLEDs, organic solar cells, etc.…”

Section: Carbon Nitride–2d Polymer 2d/2d Vdw Structuresmentioning

confidence: 99%

“…Copyright 2015 Mahmood et al (d) Adapted with permission from ref by Zhou et al under the terms of the Creative Commons Attribution 4.0 International License (CC BY) (). Copyright 2018 Zhou et al (e) Adapted with permission from ref . Copyright 2021 Elsevier.…”

Section: Carbon Nitride–2d Polymer 2d/2d Vdw Structuresmentioning

confidence: 99%

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Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

et al. 2021

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The surging demand for energy and staggering pollutants in the environment have geared the scientific community to explore sustainable pathways that are economically feasible and environmentally compelling. In this context, harnessing solar energy using semiconductor materials to generate charge pairs to drive photoredox reactions has been envisioned as a futuristic approach. Numerous inorganic crystals with promising nanoregime properties investigated in the past decade have yet to demonstrate practical application due to limited photon absorption and sluggish charge separation kinetics. Two-dimensional semiconductors with tunable optical and electronic properties and quasi-resistance-free lateral charge transfer mechanisms have shown great promise in photocatalysis. Polymeric graphitic carbon nitride (g-C3N4) is among the most promising candidates due to fine-tuned band edges and the feasibility of optimizing the optical properties via materials genomics. Constructing a two-dimensional (2D)/2D van der Waals (vdW) heterojunction by allies of 2D carbon nitride sheets and other 2D semiconductors has demonstrated enhanced charge separation with improved visible photon absorption, and the performance is not restricted by the lattice matching of constituting materials. With the advent of new 2D semiconductors over the recent past, the 2D/2D heterojunction assemblies are gaining momentum to design high performance photocatalysts for numerous applications. This review aims to highlight recent advancements and key understanding in carbon nitride based 2D/2D heterojunctions and their applications in photocatalysis, including small molecules activation, conversion, and degradations. We conclude with a forward-looking perspective discussing the key challenges and opportunity areas for future research.

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Section: Carbon Nitride−carbon 2d/2d Vdw Structuresmentioning

confidence: 99%

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Section: Carbon Nitride–2d Polymer 2d/2d Vdw Structuresmentioning

confidence: 99%

Section: Carbon Nitride–2d Polymer 2d/2d Vdw Structuresmentioning

confidence: 99%

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Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

et al. 2021

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“…), porosity and the nitrogen content, which direct the potential applications in multiple research fields. [5] Besides g-C 3 N 4 , our group has developed methodologies for the preparation of nitrogen-rich CNs, such as C 3 N 5 , C 3 N 6 and C 3 N 7 , which show high basicity due to the rich functional groups, therefore, promising for a variety of applications. [6] For example, Vinu et al reported a novel nanoporous carbon nitride with C 3 N 5 stoichiometry from tetrazole precursor, and the prepared material exhibits a combined framework system with triazole and triazine moieties and excellent catalytic activity for the oxygen reduction reaction (ORR).…”

mentioning

confidence: 99%

Microporous Carbon Nitride (C₃N_5.4) with Tetrazine based Molecular Structure for Efficient Adsorption of CO₂ and Water

et al. 2021

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Mesoporous carbon nitrides with C3N5 and C3N6 stoichiometries created a new momentum in the field of organic metal‐free semiconductors owing to their unique band structures and high basicity. Here, we report on the preparation of a novel graphitic microporous carbon nitride with a tetrazine based chemical structure and the composition of C3N5.4 using ultra‐stable Y zeolite as the template and aminoguanidine hydrochloride, a high nitrogen‐containing molecule, as the CN precursor. Spectroscopic characterization and density functional theory calculations reveal that the prepared material exhibits a new molecular structure, which comprises two tetrazines and one triazine rings in the unit cell and is thermodynamically stable. The resultant carbon nitride shows an outstanding surface area of 130.4 m2 g−1 and demonstrates excellent CO2 adsorption per unit surface area of 47.54 μmol m−2, which is due to the existence of abundant free NH2 groups, basic sites and microporosity. The material also exhibits highly selective sensing over water molecules (151.1 mmol g−1) and aliphatic hydrocarbons due to its unique microporous structure with a high amount of hydrophilic nitrogen moieties and recognizing ability towards small molecules.

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Tailoring Physicochemical Properties of Photothermal Hydrogels Toward Intrinsically Regenerative Therapies

Xiao,

Dai,

et al. 2024

Adv Funct Materials

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Photothermal hydrogels (PTHs) are considered next‐generation biomaterials as they offer remotely defined biophysical information of the extracellular milieu. PTHs allow precise and non‐genetic control for the regeneration of native tissues, which is the ultimate goal of tissue engineering (TE). Molecular and physical properties of PTHs, such as components, structural configurations, and mechanical characteristics, collectively serve as determinants for understanding the dynamic tissue response and clinical translation. PTHs have entered a period of fruition due to the development of numerous manufacturing technologies and polymeric matrices. Herein, this review comprehensively and meticulously elucidates the mechanisms of regenerative therapeutics underlying the design and fabrication of PTHs. Recent advances in the photothermal principles and various categories of photothermal agents (PTAs) have been extensively discussed. Vital components and structures of PTHs are summarized to enable efficacious and precise therapeutic energy delivery. Emerging applications of PTHs in TE are also demonstrated, which expand the strategies for the intrinsic regeneration of injured tissues. Then deliberate the structural and chemical engineering of PTHs to enhance prognosis while highlighting the challenges associated with clinical translation. In this review, we aim to provide guidance and prospects for exploration and innovation of PTHs in the field of TE.

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Carbon nitride of five-membered rings with low optical bandgap for photoelectrochemical biosensing

Cited by 81 publications

References 61 publications

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

Microporous Carbon Nitride (C₃N_5.4) with Tetrazine based Molecular Structure for Efficient Adsorption of CO₂ and Water

Tailoring Physicochemical Properties of Photothermal Hydrogels Toward Intrinsically Regenerative Therapies

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Carbon nitride of five-membered rings with low optical bandgap for photoelectrochemical biosensing

Cited by 81 publications

References 61 publications

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

Microporous Carbon Nitride (C3N5.4) with Tetrazine based Molecular Structure for Efficient Adsorption of CO2 and Water

Tailoring Physicochemical Properties of Photothermal Hydrogels Toward Intrinsically Regenerative Therapies

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Microporous Carbon Nitride (C₃N_5.4) with Tetrazine based Molecular Structure for Efficient Adsorption of CO₂ and Water