Journal of Physical Chemistry C
·
2024
·
IF 3.3
Dongbo Chen,Nian Fu,Yufeng Chang,Yu-e Shi,Zhenguang Wang
The construction of afterglow materials with full-color tunable emissions is attractive but still a challenging task. Herein, a host–guest doping strategy was proposed to produce afterglow materials with an emission-color span of almost 210 nm (from blue to deep red) by heat treating the aqueous mixture of arylboronic acids and boric acid (BA). In-depth structural, photophysical, and theoretical studies revealed that the heat treatment process resulted in the dehydration of BA and the formation of a glassy state host, and arylboronic acids were loaded as guest molecules through H-bonds and covalent bonds with BA. The afterglow originated from arylboronic acids, and the afterglow color of products was related to their degree of conjugation of aromatic groups. The host–guest doping strategy significantly improved the photophysical performances of arylboronic acids, achieving a photoluminescence quantum yield as high as 81.7% and an emission lifetime of 2.90 s (afterglow >22 s). Triple information encryption based on emission lifetime and color-encoding was also achieved, demonstrating their commercial potential for use in anticounterfeiting and information storage.
研究领域:
材料科学
·
光物理学
✓ 已验证
DOI
高影响因子
SmartMat
·
2022
·Vol. 4
·期 2
·e1153
·
IF 0
Junpeng Ji,Biao Yang,Chaohong Zhang,Yulu Cai,Jingwei Chen,Changbin Zhao,Tao Wang,Lijie Wu,Ming Liu,Junwu Bai,Jiangfeng Wang,Zhongbin Wu,Shufen Chen,Haifeng Ling,Zhongfu An,Yonghua Chen,Jianpu Wang,Wei Huang,Hong Meng
Limited to the structure of traditional light-emitting devices, electronic devices that can directly convert machine language into human visual information without introducing any back-end circuit are still not easy to achieve. Based on a specially designed three-phase co-planar electrode structure, a new type of three-phase alternating current driven organic light-emitting device with the integration of emission and control functions, full-color tunability and simple device structure is demonstrated in this study. We integrate the light-emitting function of color-tunable light-emitting devices and the switching of three triodes in a single three phase organic light-emitting device. The state control of luminous color and luminance intensity merely requires the introduction of a kind of machine language, that is an easy-to-program 6-bit binary number coded digital signals. The color adjustable area covers 66% of the color triangle of the National Television System Committee. Such simple and easy-to-integrate light-emitting system has great potential applications in the next-generation man-machine interface.
研究领域:
电气工程
·
光电
·
材料科学
·
人机交互
✓ 已验证
产品关联
DOI
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Xue Nan,Zhou He-Ye,Han Ying,Li Meng,Lu Hai-Yan,Chen Chuan-Feng
Developing a facile and feasible strategy to fabricate thermally activated delayed fluorescence materials exhibiting full-color tunability remains an appealing yet challenging task. In this work, a general supramolecular strategy for fabricating thermally activated delayed fluorescence materials is proposed. Consequently, a series of host–guest cocrystals are prepared by electron-donating calix[3]acridan and various electron-withdrawing guests. Owing to the through-space charge transfer mediated by multiple noncovalent interactions, these cocrystals all display efficient thermally activated delayed fluorescence. Especially, by delicately modulating the electron-withdrawing ability of the guest molecules, the emission colors of these cocrystals can be continuously tuned from blue (440 nm) to red (610 nm). Meanwhile, high photoluminescence quantum yields of up to 87% is achieved. This research not only provides an alternative and general strategy for the fabrication of thermally activated delayed fluorescence materials, but also establishes a reliable supramolecular protocol toward the design of advanced luminescent materials.
研究领域:
材料科学
·
化学
·
光学材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yang Pang,Zhichuang Qi,Liangliang Cui,Zhangmi Huang,Chunyan Hu,Zhijia Zhu,Baojiang Liu
Photonic crystal hydrogels (PCHs) are innovative materials that translate imperceptible deformations and humidity changes into visible colors, broadening the applications of photonics in bioengineering and smart materials. To overcome poor mechanical properties of traditional PCHs limited by weak intermolecular forces, we designed a PCH with a dual-network framework comprising N-isopropylacrylamide-co-acrylamide (NIPAM-co-AM) and biomass lotus root starch (LR). Since LR is rich in hydroxyl groups, it can undergo molecular linkage entanglement with the NIPAM-co-AM hydrogel matrix, forming hydrogen bonds that significantly enhance the mechanical properties of the PCH. We have prepared PCH films capable of conveying multidimensional information about the extent and distribution of transient deformation by encapsulating magnetic photonic crystal microspheres (MPCMs) within a hydrogel matrix. The PCH films were found to have ultrafast response time (< 10 s), full-color tunable range, high spatial resolution, excellent mechanical toughness (tensile up to 0.17 MPa) and sensitivity (2.52 nm % −1 ), and were able to sense relative humidity (RH) from 11 % to 98 %. Equipped with a dynamically reconfigurable lattice, this dual-responsive (tensile/humidity) PCH not only facilitates the creation of water-rewritable photonic films but also holds promise for integration into structural color elastic fabrics, thereby presenting novel prospects for smart textile applications.
研究领域:
材料科学
·
生物工程
·
智能材料
·
纺织工程
·
光子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）