Ferromagnetic (L10 phase) FePt alloy nanoparticles (NPs) can be generated by single-step pyrolysis of metallopolymers. The influence of the pyrolysis temperature on the size and magnetic properties of these NPs were investigated.
Aggregation and Tunable Color Emission Behaviors of
<scp>l</scp>
‐Glutamine‐Derived Platinum(II) Bipyridine Complexes by Hydrogen‐Bonding, π–π Stacking and Metal–Metal Interactions
l‐glutamine‐derived functional group was introduced to the bis(arylalkynyl)platinum(II) bipyridine complexes 1–4. The emission could be switched between the 3MLCT excited state and the triplet excimeric state through solvent or temperature changes, which is attributed to the formation and disruption of hydrogen‐bonding, π–π stacking, and metal–metal interactions. Different architectures with various morphologies, such
甲Ñ升谷氨酰胺衍生的官能团被引入到双(芳基炔)铂(II)配合物联吡啶1 - 4。发射可以通过溶剂或温度变化在3 MLCT激发态和三重态激发态之间切换,这归因于氢键的形成和破坏,π-π堆积以及金属-金属相互作用。随着溶剂的变化,形成了具有各种形态的不同结构,例如蜂窝状纳米结构和纳米球,这些变化伴随着11 H NMR和明显的发射变化。另外,由于联吡啶上的取代基引入了不同的聚集行为,因此在室温下形成了黄色和红色的发光金属盐。通过控制温度,热响应性金属盐显示出具有可调颜色的发射行为。负的吉布斯自由能变化(ΔG)和准分子形成的大缔合常数表明,分子通过氢键,π-π和金属-金属相互作用而发生聚集,从而导致三重态激子发射。
Unique Solvatochromic Behavior of Unsymmetrical Platinum‐Dithiolene Complexes Coordinated by 4,4’‐Dinonyl‐2,2’‐Bipyridine
to an intra‐ligand π−π* transition in the dmit moiety and an intramolecular‐mixed metal/ligand‐to‐ligand charge transfer transition (LL'CT) from its highest occupied molecular orbital (HOMO) to the lowest unoccupied molecular orbital (LUMO), respectively. Complex 2 exhibits two absorption bands at approximately 450 and 676 nm in chloroform. Both bands correspond to LL'CT from HOMO‐1 to LUMO and HOMO
不对称金属二硫杂环戊烯络合物[(壬基-bpy)Pt(dMIT)](1)和[(壬基-bpy)Pt(C 8 H 4 S 8)](2)(壬基-bpy = 4,4-二壬基-2 ,2- bypiridine,DMIT = 4,5- disulphanyl丙烷-1,3-二硫醇-2- thionate(2-),C 8 H ^ 4小号8 2- = 2 - (4,5-亚乙基)-1,3-在此研究中合成了[-dithiole-2-yylne} -1,3-dithiole-4,5-dithiolate(2-))。对于1,在氯仿中观察到两个在466和584 nm处的电子吸收带,并将其分配给dMIT部分中的配体内π-π*跃迁和分子内混合的金属/配体至配体的电荷转移跃迁(LL'CT )分别从其最高占据的分子轨道(HOMO)到最低的未占据的分子轨道(LUMO)。在氯仿中,络合物2在约450和676 nm处显示两个吸收带
Curcumin-based ionic Pt(<scp>ii</scp>) complexes: antioxidant and antimicrobial activity
作者:Rossella Caligiuri、Giuseppe Di Maio、Nicolas Godbert、Francesca Scarpelli、Angela Candreva、Isabella Rimoldi、Giorgio Facchetti、Maria Giovanna Lupo、Emilia Sicilia、Gloria Mazzone、Fortuna Ponte、Isabella Romeo、Massimo La Deda、Alessandra Crispini、Renata De Rose、Iolinda Aiello
DOI:10.1039/d2dt01653b
日期:——
Four new Pt(ii) ionic complexes assembled from N-donor ligands and curcumin display interesting antioxidant and antimicrobial properties.
The title compound, [PtCl2 (C28H44N2)], is a new square-planar Pt-II complex containing a bipyridine moiety with two long alkyl-chain substituents. The complex forms a segregated packing structure made up of the alkyl-chain layers and paired coordination sites.