scholarly journals Understanding Optoelectronic Properties of Cyano-Terminated Oligothiophenes in the Context of Intramolecular Charge Transfer

2011 ◽  
Vol 115 (36) ◽  
pp. 10573-10585 ◽  
Author(s):  
Sandra Rodríguez González ◽  
Jesús Orduna ◽  
Raquel Alicante ◽  
Belén Villacampa ◽  
Kari A. McGee ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Optoelectronic Properties

scholarly journals Conjugation and optoelectronic properties of acetylenic scaffolds and charge-transfer chromophores

2008 ◽  
Vol 80 (3) ◽  
pp. 411-427 ◽  
Author(s):  
Milan Kivala ◽  
François Diederich
Keyword(s):  
Charge Transfer ◽  
Storage Capacity ◽  
Intramolecular Charge Transfer ◽  
Research Effort ◽  
Repetitive Sequences ◽  
Molecular Switches ◽  
Optoelectronic Properties ◽  
Three Dimensions ◽  
Donor Acceptor ◽  
And Storage

Our group started a research program in acetylene chemistry in 1987; since then, an intense research effort led to a fascinating journey into acetylenic scaffolding, aimed at exploring conjugative and optoelectronic properties of acetylenic chromophores. This journey included the generation of a unique molecular construction kit for acetylenic scaffolding, consisting of (E)-1,2-diethynylethenes [DEEs, (E)-hex-3-ene-1,5-diynes], tetraethynylethenes (TEEs, 3,4-diethynylhex-3-ene-1,5-diynes), chiral 1,3-diethynylallenes (DEAs, hepta-3,4-diene-1,6-diynes), 1,4-di and 1,1,4,4-tetraethynylbutatrienes, chiral trialkynylmethanes, and 1,1,2,2-tetraethynylethanes. These building modules were subsequently applied to the synthesis of carbon-rich architectures extending into one, two, and three dimensions. They include multinanometer-long monodisperse oligomers as models for infinite acetylenic polymers, molecular switches, perethynylated dehydroannulenes, expanded radialenes, and radiaannulenes, and an octamethoxy-substituted expanded cubane with a central C56 core. Donor-substituted cyanoethynylethenes (CEEs) and 1,1,4,4-tetracyanobuta-1,3-dienes (TCBDs) were introduced as new push-pull chromophores featuring intense intramolecular charge-transfer (CT) interactions. Dendritic multivalent CT chromophores were constructed using atom-economic, "click"-like reactions, and these systems were shown to behave as "molecular batteries", featuring exceptional electron uptake and storage capacity. The research finally led to the development of an unprecedented cascade reaction for the preparation of dendritic and oligomeric donor-acceptor (D-A) molecules. New [AB]-type oligomers become accessible in domino reactions involving repetitive sequences of [2+2] cycloadditions of tetracyanoethylene (TCNE) and tetrathiafulvalene (TTF) to polyynes, followed by retro-electrocyclizations.

scholarly journals Homoconjugation enhances the photophysical and electrochemical properties of a new 3D intramolecular charge transfer iptycene displaying deep blue emission

2019 ◽  
Vol 7 (41) ◽  
pp. 12886-12890 ◽  
Author(s):  
Stephanie Montanaro ◽  
Daniel G. Congrave ◽  
Marc K. Etherington ◽  
Iain A. Wright
Keyword(s):  
Charge Transfer ◽  
Electrochemical Properties ◽  
Intramolecular Charge Transfer ◽  
Blue Emission ◽  
Optoelectronic Properties ◽  
Deep Blue

Greater than the sum of its parts – a 3D ICT molecule displays greatly improved optoelectronic properties over a 2D analogue.

Dynamic adjustment of emission from both singlets and triplets: the role of excited state conformation relaxation and charge transfer in phenothiazine derivates

2021 ◽  
Author(s):  
Weidong Qiu ◽  
Xinyi Cai ◽  
Mengke Li ◽  
Liangying Wang ◽  
Yanmei He ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dynamic Adjustment ◽  
Twisted Intramolecular Charge Transfer

Dynamic adjustment of emission behaviours by controlling the extent of twisted intramolecular charge transfer character in excited state.

Steric Effects on Intramolecular Charge Transfer Fluorescence of Benzo[b]thiophene-1,1-dioxide Bridged Macrocages

2021 ◽  
Author(s):  
Keita Nobuhara ◽  
Yusuke Inagaki ◽  
Wataru Setaka
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Fluorescence Properties ◽  
Steric Effects ◽  
Sensor Molecules

Intramolecular charge transfer (ICT) fluorescence has been widely investigated and exploited in sensor molecules. However, steric effects on the ICT fluorescence properties have rarely been reported so far, although research...

scholarly journals Counterion Migration Driven by Light-Induced Intramolecular Charge Transfer

JACS Au ◽  
2021 ◽  
Author(s):  
Ta-Chun Lin ◽  
Zong-Ying Liu ◽  
Shih-Hung Liu ◽  
Igor O. Koshevoy ◽  
Pi-Tai Chou
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer
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