scholarly journals Steric ploy for alternating donor–acceptor co-assembly and cooperative supramolecular polymerization

2017 ◽  
Vol 8 (2) ◽  
pp. 1040-1045 ◽  
Author(s):  
Saptarshi Chakraborty ◽  
Haridas Kar ◽  
Amrita Sikder ◽  
Suhrit Ghosh

The presence of a bulky peripheral wedge destabilizes the homo-assembly of an amide functionalized acceptor monomer and thereby enables alternating supramolecular copolymerization with an amide appended donor monomer via the synergistic effect of H-bonding and the charge-transfer interaction.

2018 ◽  
Vol 18 (10) ◽  
pp. 6001-6008 ◽  
Author(s):  
Rabia Usman ◽  
Arshad Khan ◽  
Mingliang Wang ◽  
Yi Luo ◽  
Weiwei Sun ◽  
...  

2004 ◽  
Vol 52 (3) ◽  
pp. 303-306 ◽  
Author(s):  
Anthony Amaechi Attama ◽  
Petra Obioma Nnamani ◽  
Michael Umale Adikwu ◽  
Florence Obianuju Akidi

RSC Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2382-2387 ◽  
Author(s):  
Chen Wang ◽  
Jianlin Wang ◽  
Na Wu ◽  
Miao Xu ◽  
Xiaomei Yang ◽  
...  

Organic semiconductor molecules, coronene and perylene diimide, form an alternate stacked cocrystal due to the strong donor–acceptor charge transfer interaction.


2002 ◽  
Vol 67 (8) ◽  
pp. 1154-1164 ◽  
Author(s):  
Nachiappan Radha ◽  
Meenakshisundaram Swaminathan

The fluorescence quenching of 2-aminodiphenylamine (2ADPA), 4-aminodiphenylamine (4ADPA) and 4,4'-diaminodiphenylamine (DADPA) with tetrachloromethane, chloroform and dichloromethane have been studied in hexane, dioxane, acetonitrile and methanol as solvents. The quenching rate constants for the process have also been obtained by measuring the lifetimes of the fluorophores. The quenching was found to be dynamic in all cases. For 2ADPA and 4ADPA, the quenching rate constants of CCl4 and CHCl3 depend on the viscosity, whereas in the case of CH2Cl2, kq depends on polarity. The quenching rate constants for DADPA with CCl4 are viscosity-dependent but the quenching with CHCl3 and CH2Cl2 depends on the polarity of the solvents. From the results, the quenching mechanism is explained by the formation of a non-emissive complex involving a charge-transfer interaction between the electronically excited fluorophores and ground-state chloromethanes.


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