Results 31 to 40 of about 1,773,113 (206)

Sustainable afterglow materials from lignin inspired by wood phosphorescence

open access: yesCell Reports Physical Science, 2021
Summary: Sustainable organic afterglow room-temperature phosphorescence (RTP) is a particularly attractive phenomenon but remains difficult to achieve.
Jingwen Yuan   +7 more
doaj   +1 more source

Photoactivation-Enabled Tunable Room-Temperature Phosphorescence and Thermally Activated Delayed Fluorescence in Crystalline Materials. [PDF]

open access: yesAdv Sci (Weinh)
This work is the first to demonstrate the regulation of photoactivated room‐temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) in crystalline materials without any pretreatment. Furthermore, we reveal the underlying mechanisms by uncovering the role of host‐guest energy level alignment, exciton lifetime, crystallinity,
Zhang L   +5 more
europepmc   +2 more sources

Afterglow Carbon Dots: From Fundamentals to Applications

open access: yesResearch, 2021
The ability of carbon dots (CDs) to emit afterglow emission in addition to fluorescence in response to UV-to-visible excitation allows them to be a new class of luminescent materials.
Chenxi Peng   +7 more
doaj   +1 more source

Facile Synthesis of a Long Afterglow Calcium–Organic Framework in Water

open access: yesACS Omega, 2022
Presented here is a water-stable Ca-MOF that has been facilely synthesized from the metastable 3D framework in water and exhibits room-temperature phosphorescence with second scale long afterglow.
Dong-Fei Lu   +5 more
openaire   +2 more sources

Maintaining ecological soil functions - techniques in organic farming systems [PDF]

open access: yes, 2000
The ecological soil functions (e.g. habitat and living space, production and utilization, ecological regulation) have to be taken into account and maintained by farming systems.
Beste, Andrea
core   +1 more source

Photochemical afterglow of single organic molecules with wide‐range tunable lifetime

open access: yesPhotoMat, EarlyView., 2023
“All‐in‐one” strategy was used to achieve photochemical afterglow in single organic molecule, with second‐to‐hour range tunable lifetime by tailoring the electron‐withdrawing ability of substituents. Abstract Background Photochemical afterglow that relies on slow release of photons from the chemical energy stored by light pre‐irradiation has emerged as
Yuetian Pei   +6 more
wiley   +1 more source

Visible-Light-Excitable Sky-Blue TADF-Type Organic Afterglow

open access: yes, 2023
Blue afterglow emitters contribute one of the three primary afterglow colors and can be used to generate other afterglow colors via energy transfer.
Xuefeng Chen (373198)   +8 more
core   +1 more source

The contribution of research to the development of organic farming in Europe [PDF]

open access: yes, 2002
On national as well as on EU level, research funds should be directed substantially towards organic farming in order to improve the economic and ecological performance of organic farming.
Niggli, Urs
core   +1 more source

A Class of Organic Units Featuring Matrix‐Controlled Color‐Tunable Ultralong Organic Room Temperature Phosphorescence

open access: yesAdvanced Science, 2023
A novel class of organic units (N‐1 and N‐2) and their derivatives (PNNA‐1 and PNNA‐2) with excellent property of ultralong organic room temperature phosphorescence (UORTP) is reported. In this work, N‐1, N‐2, and their derivatives function as the guests,
Xue Zhang   +8 more
doaj   +1 more source

Four‐Dimensional Electrochemiluminescence Microscopy Enables Depth‐Resolved Imaging of Single, Living Spheroids

open access: yesAngewandte Chemie, EarlyView.
A hybrid “confocal” electrochemiluminescence (ECL) microscopy combines depth‐resolved and time‐resolved imaging to visualize ECL processes across three spatial dimensions and time. By exploiting sluggish coreactant kinetics at ITO electrodes, homogeneous redox propagation enables depth‐resolved, single‐cell resolution mapping of living multicellular ...
Elisa D'Arrigo   +4 more
wiley   +2 more sources

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