Mechanofluorochromic or piezochromic fluorescence chemistry involves the switching and tuning of luminescent properties solid-state materials induced by exogenous forces, such as grinding, shearing, compression, tension, so forth. Up until now, most reported mechanochromic systems, including liquid crystals, organic molecules, organometallic compounds, polymers, dye-doped have displayed reversible two-color changes, which arise from either supramolecular chemical structure transformations....

Asserting its independence: A single organic molecule containing pyrene and rhodamine B chromophores separated by a peptide spacer formed mechanochromic material whose fluorescence could be switched from blue to bluish-green reddish grinding. Modulation of the overlapped packing pattern excimer for emission was crucial reversible tricolored switching observed.

A smart luminescent material whose emission color and intensity can be separately modulated by external force is demonstrated. The rational manipulation of rich noncovalent interactions fluorophore packing style promotes an in-depth understanding between supramolecular structure photophysical property offers effective strategy to modulate the light-emitting in a predicative way.

Color schemes: A mechanochromic material composed of two types peptides bearing a pyrene group and rhodamine B moieties, respectively, displays multiluminescent colors, such as blue, green, reddish in one sample (see picture). The behavior is based on combined switching molecular assemblies chemical structure. Detailed facts importance to specialist readers are published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by...

Tree density affects species diversity in forest plantations. Understory diversity, tree regeneration, and soil physicochemical characteristics were assessed under three planting densities of Pinus massoniana Taizishan Mountains, Hubei, China. There was a higher degree shrub herb lower stands. Total richness for herbs (n = 42) than shrubs 30) but the two groups exhibited similar pattern with greater at stand density. Changes community structure composition more frequent high Community low...

Urban heat island (UHI) and air pollution are common environmental problems in urban areas. However, there is no comprehensive analysis of influencing factors their interactions on land surface temperature (LST) aerosol optical depth (AOD). To propose strategies to comprehensively mitigate LST AOD by optimizing the landscape pattern, we used a series statistical methods quantify correlation, interactive contribution, influence mechanism that how metrics influenced directly or indirectly. In...

Climate, land use and cover (LULC) changes are among the primary driving forces of soil loss. Decoupling their effects can help in understanding magnitude trend loss response to human activities ecosystem management. Here, RUSLE model was applied estimate spatial-temporal variations rate Three Gorges Reservoir (TGR) area during 2001–2015, followed by a scenario design decouple climate LULC changes. The results showed that increasing rainfall generated as much 2.90 × 107 t TGR area. However,...

Few studies have reported on the distribution, food choices, general behaviour, and interactions of Asiatic black bear (Ursus thibetanus) with humans. We explored conservation status species its conflicts humans in Kaghan Valley, northwest Pakistan. From September 2013 to December 2015, residents from 24 villages three major regions Valley were interviewed about human–bear conflicts. In parallel, a survey for signs presence was conducted assess presence, including attacks crop damage that...

Forest ecosystems are in serious trouble globally, largely due to the over-exploitation. To alleviate environmental problems caused by deforestation, China has undertaken a series of key forestry ecological development programs, including Natural Protection Program (NFPP), Conversion Cropland into Forests (CCFP), Desertification Combating around Beijing and Tianjing (DCBT), Key Shelterbelt Development Programs Three-North Region Middle Lower Reaches Yangtze River (KSDP) Nature Reserve...

We report herein the mechanochromic luminescent property of a dendritic polypeptide with fluorescent aromatic moiety at focal point. The different 1 under mechanical stimulus is attributed to switch self-assembled structures. Moreover, photoluminescence also depends on thermal history.

Plants not only improve air quality by adsorbing particulate matter (PM) on leaf surfaces but can also be affected their accumulation. In this study, a field investigation was performed in Wuhan, China, into the relationship between seven traits and accumulation of three different sizes PM (PM11, PM2.5 PM0.2) leaves. The retention abilities plant leaves with respect to differed significantly at sites species. average capabilities specific area (SLA) were greater seriously polluted area,...

Microclimatic condition is a fundamental indicator for evaluating outdoor space livability and vitality. Research has shown that poorly designed building layouts can lead to discomfort; however, the mechanisms influencing microclimate based on residential layout are unclear high temperature humidity regions. This study explores relationship between wind thermal environment at pedestrian level in Wuhan, city renowned temperatures humidity. Six typical were simulated, using ENVI-met numerical...

Urban heat islands are representative problems in urban environments. The impact of spectral indexes on land-surface temperature (LST) under different forms, climates, and functions is not fully understood. Local climate zones (LCZs) used to characterize heterogeneous cities. In this study, we quantified the contribution three cities high-temperature surface island intensity (SUHII) across LCZs seasons, Welch Games–Howell tests analyze difference LST, then described spatial pattern...