POLYMERS WITH TUNABLE BAND GAPS FOR PHOTONIC AND ELECTRONIC APPLICATIONS
申请人:You Wei
公开号:US20130092912A1
公开(公告)日:2013-04-18
The present invention provides, among other things, a copolymer comprising at least one donor monomer and at least one acceptor monomer. The polymer may optionally further comprise at least one additional comonomer. The polymers are useful as a charge-transport, semiconducting, electrochemical conducting, photoconducting, or light emitting material. Microelectronic devices comprising such polymers (e.g., as a heterojunction therein) are also described.
Conformer Ring Flip Enhances Mechanochromic Performance of <i>ansa</i>-Donor–Acceptor–Donor Mechanochromic Torsional Springs
作者:Raphael Hertel、Wafa Maftuhin、Michael Walter、Michael Sommer
DOI:10.1021/jacs.2c06712
日期:2022.12.7
deformation, the ringflip precedes mechanically induced planarization of the ansa-DAD spring, the latter process producing a PL shift of 21 nm nN–1. Within the stress–strain diagram, the thiophene ringflip and DAD planarization are thus two separated processes that also cause irreversible and reversible mechanochromic responses, respectively, upon sample failure. As the thiophene ringflip requires much
基于供体-受体-供体 (DAD) 弹簧构象变化的机械发色团允许通过吸光度或光致发光 (PL) 波长的单调变化来感测作用在聚合物链上的力。在这里,我们确定了一系列噻吩 (D)-侧翼喹喔啉 (A) 作为分子扭转弹簧,用于室温下本体聚合物中的力传感。DAD 连接到聚合物基质的模式和连接器刚度是影响力转换到 DAD 弹簧的功效的关键参数,从而影响机械变色响应,正如在应力-应变实验期间体膜的原位 PL 光谱所探测的那样。PL 最大值的最大偏移,因此是最高的灵敏度,是从ansa获得的-DAD 弹簧展示桥接 D 单元和刚性 A 连接器。使用详细的光谱学和密度泛函理论计算,我们揭示了噻吩环翻转形式的构象异构体再分布是整体机械变色响应的主要部分。在变形早期阶段的力低至 27 pN 时,环翻转先于 ansa -DAD 弹簧的机械诱导平面化,后一过程产生 21 nm nN –1的 PL 偏移. 在应力-应变图中,噻吩环翻转和
Fluorine Substituted Conjugated Polymer of Medium Band Gap Yields 7% Efficiency in Polymer–Fullerene Solar Cells
作者:Samuel C. Price、Andrew C. Stuart、Liqiang Yang、Huaxing Zhou、Wei You
DOI:10.1021/ja202672c
日期:2011.5.25
US9184390B2
申请人:——
公开号:US9184390B2
公开(公告)日:2015-11-10
[EN] POLYMERS WITH TUNABLE BAND GAPS FOR PHOTONIC AND ELECTRONIC APPLICATIONS<br/>[FR] POLYMÈRES, DONT LES LARGEURS DE BANDE INTERDITE SONT ACCORDABLES, ET QUI SONT DESTINÉS À DES APPLICATIONS PHOTONIQUES ET ÉLECTRONIQUES
申请人:UNIV NORTH CAROLINA
公开号:WO2011156478A2
公开(公告)日:2011-12-15
The present invention provides, among other things, a copolymer comprising at least one donor monomer and at least one acceptor monomer. The polymer may optionally further comprise at least one additional comonomer. The polymers are useful as a charge-transport, semiconducting, electrochemical conducting, photoconducting, or light emitting material. Microelectronic devices comprising such polymers (e.g., as a heterojunction therein) are also described.