Programmable biological state-switching photoelectric nanosheets for the treatment of infected wounds

Reduced Graphene Oxide Interlocked Carbonized Loofah for Energy Harvesting and Physiological Signal Monitoring

“…(ii) In theory, the TENG’s inherent resistance inversely relates to 1/ωC avg , where ω denotes the frequency of the angular rotation and C avg indicates that the TENG has an average intrinsic capacity. Consequently, the angular frequency increases in proportion to the contact frequency, and the inherent resistance of the TENG decreases in accordance with this observation. , …”

“…Consequently, the angular frequency increases in proportion to the contact frequency, and the inherent resistance of the TENG decreases in accordance with this observation. 43,44 Increased output signals of voltage and current are a consequence of the increased electron transfer between friction pairs, which is caused by a greater overlap of electron clouds under pressure (Figure 5g) owing to the increase in loaded force. Moreover, Figure 5h exhibits robust, long-term durability in comparison to the champion CL@rGO/DNH TENG, because it does not exhibit any significant voltage reduction during continuous measurements that are carried out over a period of 10,000 cycle, which demonstrates its potential for practical applications.…”

Light‐Programmable Nanocomposite Hydrogel for State‐Switchable Wound Healing Promotion and Bacterial Infection Elimination

“…[18] Non-invasive endogenous electrical signal generation can be achieved by stimulating photo-responsive semiconductor materials with light and improving the separation of their photogenerated carriers. [19] If the photoelectric response biomaterial is loaded into hydrogel with good biocompatibility, it can provide a favorable environment for wound healing, and at the same time, the photoelectric response can be stimulated by external simple light stimulation, which provides a new idea for promoting wound healing through endogenous electrical signals. [20] In this work, we designed a light-programmable BiOCl/polypyrrole (BOC/PPy) sodium alginate (BP-SA) nanocomposite hydrogel which can realize the state-switchable biological state between promoting wound healing and eliminating bacterial infection by loading BOC/PPy nanosheets with promising photoelectric and photothermal properties inside (Scheme 1).…”

“…[ 18 ] Non‐invasive endogenous electrical signal generation can be achieved by stimulating photo‐responsive semiconductor materials with light and improving the separation of their photo‐generated carriers. [ 19 ] If the photoelectric response biomaterial is loaded into hydrogel with good biocompatibility, it can provide a favorable environment for wound healing, and at the same time, the photoelectric response can be stimulated by external simple light stimulation, which provides a new idea for promoting wound healing through endogenous electrical signals. [ 20 ]…”

Recent developments in bismuth oxyhalide-based functional nanomaterials for biomedical applications

“…As well, BiOX nanomaterials are also used in the antibacterial field. [147][148][149] QDs: quantum dots; Rub 2 d: Ru(bpy) 2 C-pyCl 2 ; UCNPs: NaGdF 4 :Yb,Tm@NaGdF 4 ; BSO: L-buthionine-sulfoximine; B-BiOCl: oxygen-deficient black BiOCl; BSP: a hybrid Bio-Signal Processor is constructed by a BiOCl nanosheet, a semiconductor rich in oxygen vacancies, coated with two functional peptides; PBA: Prussian blue analogs; BSA: bovine serum albumin; BCHN: BiOCl/Cu 2+ -H 2 O 2 @PVP; BBFG: BiOI/ Bi 2 S 3 @polydopamine nanosheets modified by amine-polyethylene glycol-folic acid (NH 2 -PEG-FA) and glucose oxidase (GOx); DOX: hydrochloric acid doxorubicin; APC: aspirin phenacetin and caffeine; FL: fluorescence; UCL: upconversion luminescence.…”