Mu‐Qing Li

Herein, lead-free layered iodide double perovskites (C₆H₁₆N₂)₂MBiI₈ (M = Ag/Cu) were synthesized, which showed typical semiconducting properties and obvious photocurrent response.

Abstract The creation of functional hydrogels with robust load‐bearing capacity adaptable to complex tissue regeneration remains challenging. Silk fibroin (SF) is a natural biomaterial with excellent mechanical strength and cell adhesion capacity, possessing tremendous potential to solve the aforementioned dilemma. The excellent biodegradability and biocompatibility and the molecular structure with multiple modifiable moieties provide opportunities for the injectability and multifunctionality of hydrogels. Furthermore, the incorporation of other polymers or active ingredients can improve the basic properties, confer biological activities and pharmacological effects, and provide the prerequisites for hydrogels to fulfill specific requirements. Therefore, SF‐based hydrogels are widely applied in tissue repair and regeneration, especially in bone, skin, nerve, liver, myocardium, and cornea, which have effectively addressed the challenges of scaffolds' lack of cell adhesion sites, excessive degradation, as well as the lack of efficient, long‐lasting antimicrobial properties. This review outlines the properties of SF, discusses the types of materials commonly used in the preparation of hydrogels and their characteristics, and describes the current construction methods of SF hydrogels. Simultaneously, recent advancements in applying SF‐based multifunctional hydrogels within biological tissues are explored, with a focus on their role in tissue repair, highlighting the repair mechanism of SF based on bone and skin.

Abstract Herein a strategy is reported for capturing and sensing iodine by strong I − ⋅⋅⋅I 2 ⋅⋅⋅I − interaction, confined in a metal‐organic framework, [Tb(Cu 4 I 4 )(ina) 3 (DMF)] ( 1 ) (ina=isonicotinate). As revealed by single‐crystal X‐ray crystallography, the uptaken I 2 molecules directly contact the {Cu 4 I 4 } n chains, virtually forming an electronically polarizable tetraiodide anion (I 4 2− ) through strong I − ⋅⋅⋅I 2 ⋅⋅⋅I − interaction. As such, a quasi‐copper‐iodide layer of {Cu 4 I 5 } n with semiconducting characteristics results, leading to a significant enhancement ( Δ σ =10 7 times) in electrical conductivity over the I 2 ‐free 1 . The effect observed is several orders of magnitude higher than those reported due to iodine⋅⋅⋅aromatic interactions ( Δ σ =10 2 times) and by interactions between I 2 and a redox‐active metal centre ( Δ σ =10 4 times). The drastic enhancement in electrical conductivity was used to switch on/off an LED bulb, suggesting the possibility of electrically sensing I 2 .

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTStructure Tunable Organic–Inorganic Bismuth Halides for an Enhanced Two-Dimensional Lead-Free Light-Harvesting MaterialMu-Qing Li†#, Yue-Qiao Hu†#, Le-Yu Bi†, Hao-Lan Zhang†, Yanyan Wang†, and Yan-Zhen Zheng*†View Author Information† Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter and School of Science, Xi'an Jiaotong University, Xi'an 710054, China*Y.-Z. Zheng. E-mail: [email protected]Cite this: Chem. Mater. 2017, 29, 13, 5463–5467Publication Date (Web):June 23, 2017Publication History Received12 March 2017Revised23 June 2017Published online28 June 2017Published inissue 11 July 2017https://pubs.acs.org/doi/10.1021/acs.chemmater.7b01017https://doi.org/10.1021/acs.chemmater.7b01017rapid-communicationACS PublicationsCopyright © 2017 American Chemical SocietyRequest reuse permissionsArticle Views3472Altmetric-Citations66LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (2)»Supporting Information Supporting Information SUBJECTS:Anions,Chemical structure,Crystal structure,Electrical conductivity,Group 17 compounds Get e-Alerts