Near‐infrared piezochromic materials presenting fluorescence responses with clear color differences and good penetrability have important potential applications, but a few such organic compounds are developed. Twisted intramolecular charge transfer (TICT) emission is versatile in solutions, especially for preparing bio/chem‐sensing materials due to the excellent sensitivity of the emission to alterations in the external environment. By analogy, the solid‐state TICT‐emissive chromophores are probably excellent candidates for the environmentally responsive material. Herein, X‐shaped π architectures that exhibit solid‐state TICT emission are developed, and their luminescent chromism and bioimaging properties are investigated. Initially, the cruciform fluorophore exhibits anomalous aggregation‐enhanced emission (AEE) and dual emission due to the existence of a TICT state. Interestingly, TICT emission is observed even in the aggregated state because the spacious environment around the bulky triphenylamine allows for rotation. During the compression process, the TICT‐based fluorophore demonstrates deep‐red to near‐infrared piezochromic behavior with a remarkable redshift (162 nm) and high sensitivity (15.1 nm GPa−1). The bioimaging performance of the TICT‐emissive dye suggests its potential utility as a fluorescent probe for biological applications.

Many piezochromic luminescent (PCL) dyes are known for their fluorescent switching capacity in the powdered phase, but they are usually difficult to utilize practically owing to poor mechanical properties. Herein, a nanofiber film fabricated through an electrospinning process is doped with PCL dye. The electrospun film not only reveals the mechanics of macromolecular materials, but also achieves precise, gradient pressure recognition (ratiometric PCL behavior). The PCL sensitivity and color difference of the dye in a crystalline state are calculated to be 15.7 nm GPa−1 and 149 nm, respectively. The sensitivity of an electrospun film containing 0.1 % (w/w) dye decreased to 3.6 nm GPa−1. Moreover, the individual effects of molecular conformation and intermolecular interaction on the PCL properties have been clearly distinguished through in situ high‐pressure experiments. Intermolecular interactions play a more significant role in PCL color difference and sensitivity. The film fabricated through an electrospinning process contributes to understanding of the working mechanism and real applications of piezochromic materials.

The advent of the Internet era has brought tremendous changes to people's way of life and work, and its convenience and efficiency have promoted the rapid development of the society. However, the openness and dissemination of the Internet also have some negative effects, especially for ideological and political education in colleges and universities, its negative effects are quite significant. Through ideological and political education, students can correct learning attitude, cultivate good ideological and moral character, guide students to establish the correct values, outlook on life, moral values. How to carry out effective innovation of ideological and political education in colleges and universities in the network era and realize the advancement of ideological and political education has become a major problem facing colleges and universities at present. This paper makes a special study on the innovative strategies of ideological and political education methods in colleges and universities in the network era.

Phytogenic silica (PhSi) is suggested to control silicon (Si) cycling in soil–plant systems in tropical and subtropical regions. However, the role of crop residues and its biochar as a source of available Si has not been well investigated in agricultural soils. In our study, we determined and compared the effects of rice straw and its biochar on soil Si forms and Si availability. Soil Si forms were characterised by a sequential extraction method, and soil Si availability was assessed by rice growth and soil Si extraction methods. A soil incubation experiment showed that the addition of rice straw and biochar increased plant‐available Si in soil (including mobile Si and adsorbed Si), as well as soil amorphous Si (especially in rice straw treatments). Moreover, this increase was more significant when higher Si (e.g., Si added at the rates of 1.6 and 2.0 g kg−1 soil) was added via rice straw and its biochar, which is most likely a result of PhSi dissolution. Rice‐straw biochar, particularly at higher Si addition rates, tended to have a higher efficiency in increasing soil Si availability than rice straw, mainly due to its greater proportion of readily labile Si. A rice growth pot experiment showed that it is difficult to determine the extent of Si dissolution from PhSi in rice straw using a short‐term experiment with a normal single‐season straw return rate, where the increased pH played a more crucial role in regulating soil Si availability. Our results imply that, in terms of enhancing Si availability, long‐term biochar application with abundant Si input is more effective than straw retention for improving soil fertility in subtropical and tropical regions with highly weathered soils. Highlights Effect of phytolith‐rich rice straw and its biochar on soil Si availability was studied. Biochar had greater efficiency in increasing plant‐available Si in soil than rice straw. Over the short term, Si dissolution from PhSi is insignificant with a typical single‐season straw return rate. Increased pH played a crucial role in regulating soil Si availability in a short‐term study.

Selective electrochemical CO2 reduction to formic acid is an appealing strategy to achieve efficient utilization of CO2. Modification of catalytic interface with organic linkers have been proven to promote the...