All-inorganic perovskite cesium lead halide quantum dots (QDs) have been widely investigated as promising materials for optoelectronic application because of their outstanding photoluminescence (PL) properties and benefits from effects. Although QDs with full-spectra visible emission synthesized years, the PL yield (PLQY) pure blue-emitting still stays at a low level, in contrast to green- or red-emitting counterparts. Herein, we obtained core–shell structured cubic CsPbBr3@amorphous CsPbBrx...

Vanillin represents one of the most widely used flavoring agents in world. However, microbial synthesis vanillin is hindered by host native metabolism that could rapidly degrade to byproducts.

Because of their attractive chemical and physical properties, graphitic nanomaterials derivatives have gained tremendous interest for applications in electronics, materials, biomedical areas. However, few detailed studies been performed to evaluate the potential cytotoxicity these on living systems at molecular level. In present study, our group exploited isobaric tagged relative absolute quantification (iTRAQ)–coupled two-dimensional liquid chromatography-tandem mass spectrometry (2D...

Abstract A fully automated spray‐coated technology with ultrathin‐film purification is exploited for the commercial large‐scale solution‐based processing of colloidal inorganic perovskite CsPbI 3 quantum dot (QD) films toward solar cells. This process in air outside glove box. To further improve performance QD cells, short‐chain ligand phenyltrimethylammonium bromide (PTABr) a benzene group introduced to partially substitute original long‐chain ligands surface (namely PTABr‐CsPbI ). not only...

All inorganic halide perovskites in the form of colloidal quantum dots (QDs) have come into people's view as one potential materials for high-efficiency solar cells; nevertheless, high surface trap density and poor stability QDs restrict performance improvement application. Here, we obtain perovskite CsPb1–xZnxI3 by hot-injection synthesis process with addition ZnCl2. Synchrotron-based X-ray absorption fine structures demonstrate that guest Zn2+ ions are doped CsPbI3 structure to improve...

Cesium halide perovskite CsPbX 3 has emerged to be a promising candidate for photovoltaic materials due their componential and thermal stability. During the fabrication of films, rich ions could cause deep trap states on surface film, leading much charge recombination. Herein, Pb 2+ solution post‐processing strategy is introduced passivate CsPbI 2 Br films. The dissociative in effectively combines with excess reduce vacancy ( V ) I interstitial i ). As result, average photoluminescence...

Colloidal cesium lead iodide (CsPbI3) perovskite quantum dots (QDs) are promising materials for solar cells because of their suitable optical bandgap and the ease solution-based processing into large-area films. Herein, we report a synthetic strategy to build up colloidal CsPbI3/PbSe heterostructure, which not only improves absorption sunlight but also passivates surface QDs, results in lower trap density prolonged exciton lifetimes. Moreover, presence PbSe component modifies electronic...

To achieve high-level production of non-native isoprenoid products, it requires the metabolic flux to be diverted from sterols heterologous reactions. However, there are limited tools for restricting towards ergosterol synthesis. In present study, we explored dynamic control ERG9 expression using different ergosterol-responsive promoters improve isoprenoids. Several were identified quantitative real-time PCR (qRT-PCR) analysis in an engineered strain with relatively high mevalonate pathway...

All-inorganic cesium lead halide perovskite quantum dots (QDs) are attractive potential materials for high-performance optoelectronics because of their high photoluminescence yield (PLQY), narrow emission widths, and tunable optical band gap. Hot injection is considered as a common method widely used the preparation QDs. However, it suffers from problems time consumption cost mixed-halide CsPb(XY)3 (XY combination Cl Br or I) QDs its cumbersome precursors with different proportions. Here,...

Abstract Inorganic perovskite CsPbI 3 has exhibited promising performance in single‐junction solar cells, but the grain boundaries (GBs) its film cause formation of defects with deep energy levels (such as iodide vacancy ( V I )) and impede transport carriers, worsening efficiency stability cells. Here, a precursor is devised thiophenol series ligands (TP‐ligands) containing both SH π‐conjugated molecules. The strong interaction between group (Lewis base) PbI 2 acid) suppresses 4 2−...

The probiotic Escherichia coli Nissle (EcN) is an exceptional strain that has attracted significant attention not only for its clinical efficacy in the treatment and prevention of gastrointestinal disorders but also as a burgeoning microbial chassis living therapeutic applications. However, there immediate necessity to develop conditional expression systems confine activity EcN specifically tract, avoid influencing environment. Here, we constructed two genetically encoded interchangeable...

Saccharomyces cerevisiae has been extensively employed as a host for the production of various biochemicals and recombinant proteins. The expression systems in S. typically rely on constitutive or galactose-regulated promoters, limited repertoire gene regulations imposes constraints productivity microbial cell factories based budding yeast. In this study, we designed characterized series allantoin-inducible endogenous allantoin catabolic system (DAL-related genes) cerevisiae. We first...

Inorganic halide perovskites exhibit significant photovoltaic performance due to their structural stability and high open-circuit voltage (Voc). Herein, a general strategy of solution engineering has been implemented enable wide solution-processing window for Voc (∼1.3 V) power conversion efficiency (PCE, ∼12.5%). We introduce nontoxic solvent dimethyl sulfoxide (DMSO) an assisted heating process in the fabrication CsPbI2Br (CPI2) control improved crystallization. A including range...

Abstract Tin oxide (SnO 2 ) nanocrystals‐based electron transport layer (ETL) has been widely used in perovskite solar cells due to its high charge mobility and suitable energy band alignment with perovskite, but the surface trap density of SnO nanocrystals harms transfer collection within device. Here, an effective method achieve a low ETL based on by devising difunctional additive potassium trifluoroacetate (KTFA) is proposed. KTFA added solution, which ions could effectively passivate...

Saccharomyces cerevisiae as a eukaryotic organism is particularly suitable microbial cell factory because it has interesting features such membrane environments for supporting membrane-associated enzymes and its capability post-translational modifications of from plants. However, S. does not readily express polycistronic transcriptional units, which represents significant challenge constructing large biochemical pathways in budding yeast. In the present study, we developed novel approach...

Combinatorial genome integration of mevalonate pathway genes was performed with the aim optimizing metabolic flux for improved production terpenoids in budding yeast. In present study, we developed a novel δ-integration platform to achieve multiple integrations through modulating concentration antibiotics. By exploiting carotenoid biosynthesis as screening module, successfully created library yeast colonies appeared various intensities orange color. As proof-of-concept that overproducers...

The inorganic perovskite CsPbI3 that exists in the form of a quantum dot (QD) shows stable cubic structure, attracting much attention for its application solar cells. However, too many grain boundaries QD (PQD) layer block transport carriers, resulting potential loss Herein, we devise gradient-band alignment (GBA) homojunction, which is constructed from three layers PQDs with different band-gaps to gradient energy alignment. GBA structure facilitated charge extraction and increased carrier...

Tyrosol is an aromatic compound with great value that widely used in the food and pharmaceutical industry. In this study, we reported a synthetic pathway for converting p-coumaric acid (p-CA) into tyrosol Escherichia coli. We found enzyme cascade comprising ferulic decarboxylase (FDC1) from Saccharomyces cerevisiae, styrene monooxygenase (SMO), oxide isomerase (SOI) Pseudomonas putida, phenylacetaldehyde reductase (PAR) Solanum lycopersicum could efficiently synthesize p-CA conversion rate...