Synthesis of Imine-Bridged Planar Poly(pyridinethiophene)s. Combination of Planarization and Intramolecular Charge Transfer in Conjugated Polymers

1998 ◽  
Vol 31 (24) ◽  
pp. 8600-8606 ◽  
Author(s):  
Yuxing Yao ◽  
Qing T. Zhang ◽  
James M. Tour
Keyword(s):  
Charge Transfer ◽  
Conjugated Polymers ◽  
Intramolecular Charge Transfer

Facial Control Intramolecular Charge Transfer of Quinoid Conjugated Polymers for Efficient in Vivo NIR-II Imaging

2019 ◽  
Vol 11 (18) ◽  
pp. 16311-16319 ◽  
Author(s):  
Wansu Zhang ◽  
Ting Huang ◽  
Jiewei Li ◽  
Pengfei Sun ◽  
Yufeng Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Conjugated Polymers ◽  
Intramolecular Charge Transfer

Novel low-band-gap conjugated polymers using an alternating donor/acceptor repeat unit

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Phimwipha Piyakulawat ◽  
Anusit Keawprajak ◽  
Anon Chindaduang ◽  
Anke Helfer ◽  
Udom Asawapirom
Keyword(s):  
Cyclic Voltammetry ◽  
Charge Transfer ◽  
Conjugated Polymers ◽  
Lower Energy ◽  
Intramolecular Charge Transfer ◽  
Repeat Unit ◽  
Band Gaps ◽  
Donor And Acceptor ◽  
Donor Acceptor ◽  
Positive Step

AbstractA series of new π-conjugated donor-acceptor copolymers, based on a naphthalene-bisimide moiety as the electron-acceptor and connected to either thiophene or dialkylfluorene as the electron-donor, were synthesized. The polymers are soluble in common organic solvents. The UV-Vis spectra of the copolymers in chloroform showed two absorption maxima at higher energies (ca. 301 - 364 nm), assigned to the π-π * transition, and at a lower energy (ca. 512 - 595 nm), ascribed to the intramolecular charge transfer between donor and acceptor units. Cyclic voltammetry revealed that the polymers were susceptible to both electrochemical oxidation and reduction, and they had a LUMO and HOMO levels ranging from -4.07 to -3.80 eV and -6.13 to -5.64 eV, respectively. The energy band gaps were estimated to be 1.48 - 2.06 eV. These results represent a positive step towards making novel compounds suitable for electronic applications.

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...

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