A tetraphenylethylene (TPE)-based flexible imidazolium () salt was used to develop a di-nuclear silver(I)-tetracarbene () complex. Coordination-induced rigidity upon formation of exhibited a 6-fold increase in emission intensity in acetonitrile compared to starting . Despite TPE being a well-known aggregation-induced emissive moiety, Ag--heterocyclic carbene (NHC) complex had a remarkably higher fluorescence emission (4-fold) in dilute solution when compared with in its aggregated state. Finally, this enhanced emission was used to institute a new platform for an artificial light-harvesting system. acted as an energy donor and efficiently transferred energy to Eosin Y () with a high saturation at a 67:1 () molar ratio. Use of rigidification-induced emission of the Ag-NHC complex to fabricate a light-harvesting scaffold is a new approach and can greatly impact the generation of smart materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.inorgchem.3c01075 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Rigidification-Induced Emissive Metal-Carbene Complexes for Artificial Light Harvesting.
Inorg Chem
July 2023
Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
A tetraphenylethylene (TPE)-based flexible imidazolium () salt was used to develop a di-nuclear silver(I)-tetracarbene () complex. Coordination-induced rigidity upon formation of exhibited a 6-fold increase in emission intensity in acetonitrile compared to starting . Despite TPE being a well-known aggregation-induced emissive moiety, Ag--heterocyclic carbene (NHC) complex had a remarkably higher fluorescence emission (4-fold) in dilute solution when compared with in its aggregated state.
View Article and Find Full Text PDFA high-sensitivity long-lifetime phosphorescent RIE additive to probe free volume-related phenomena in polymers.
Chem Commun (Camb)
February 2023
Department of Chemistry "Giacomo Ciamician" and INSTM UdR of Bologna, University of Bologna, Via Selmi, 2, 40126, Bologna, Italy.
The photophysical behaviour of phosphorescent rigidification-induced emission (RIE) dyes is highly affected by their micro- and nanoenvironment. The lifetime measure of RIE dyes dispersed in polymers represents an effective approach to gain valuable information on polymer free volume and thus develop materials potentially able to self-monitor physical ageing and mechanical stresses.
View Article and Find Full Text PDFSilver(I)-Carbene Bond-Directed Rigidification-Induced Emissive Metallacage for Picric Acid Detection.
Inorg Chem
January 2022
Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
A new triphenylamine-based tetraimidazolium salt was developed for silver(I)-carbene bond-directed synthesis of tetranuclear silver(I) octacarbene ([Ag(L)](PF)) metallacage . Interestingly, after assembly formation, metallacage showed a nine-fold emission enhancement in dilute solution while ligand was weakly fluorescent. This is attributed to the rigidity induced to the system by metal-carbene bond formation where the metal center acts as a rigidification unit.
View Article and Find Full Text PDFA Carbazole-Bridged Biscyclometalated Diplatinum Complex: Synthesis, Characterization, and Dual-Mode Aggregation-Enhanced Phosphorescence.
Inorg Chem
May 2021
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
A cationic carbazole-bridged biscyclometalated diplatinum complex has been synthesized and characterized. Single-crystal X-ray analysis demonstrates that complex displays a dimeric structure with noncovalent π-π stacking and unique double Pt-Pt interactions. In aerated dilute CHCN, complex is characterized by a very weak monomeric yellow emission (λ = 547 nm; Φ = 0.
View Article and Find Full Text PDFConcurrent Compression of Phospholipid Membranes by Calcium and Cholesterol.
Langmuir
September 2019
J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, 182 23 Prague 8 , Czech Republic.
Regulation of cell metabolism, membrane fusion, association of proteins with cellular membranes, and cellular signaling altogether would not be possible without Ca ions. The distribution of calcium within the cell is uneven with the negatively charged inner leaflet of the plasma membrane being one of the primary targets of its accumulation. Therefore, we decided to map the influence of Ca on the properties of lipid bilayers closely resembling natural lipid membranes.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!