Molecular Marriage via Charge Transfer Interaction in Organic Charge Transfer Co-Crystals toward Solid-State Fluorescence Modulation

2017 ◽  
Vol 17 (3) ◽  
pp. 1251-1257 ◽  
Author(s):  
Arshad Khan ◽  
Mingliang Wang ◽  
Rabia Usman ◽  
Hao Sun ◽  
Man Du ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Charge Transfer Interaction ◽  
Fluorescence Modulation ◽  
Solid State Fluorescence

Investigation of Charge-Transfer Interaction in Mixed Stack Donor–Acceptor Cocrystals Toward Tunable Solid-State Emission Characteristics

2018 ◽  
Vol 18 (10) ◽  
pp. 6001-6008 ◽  
Author(s):  
Rabia Usman ◽  
Arshad Khan ◽  
Mingliang Wang ◽  
Yi Luo ◽  
Weiwei Sun ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Emission Characteristics ◽  
Charge Transfer Interaction ◽  
Donor Acceptor

Investigation of molecular arrangements and solid-state fluorescence properties of solvates and cocrystals of 1-acetyl-3-phenyl-5-(9-anthryl)-2-pyrazoline

CrystEngComm ◽  
2014 ◽  
Vol 16 (26) ◽  
pp. 5820-5826 ◽  
Author(s):  
Qi Feng ◽  
Mingliang Wang ◽  
Chunxiang Xu ◽  
Arshad Khan ◽  
Xiaojuan Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Title Compound ◽  
Fluorescence Properties ◽  
Fluorescence Modulation ◽  
Solid State Fluorescence

The arrangement of the title compound (crystal I) was regulated via different solvates and cocrystals (crystals II–V) for fluorescence modulation.

New carbazole appended subporphyrin displaying intramolecular charge transfer and solid state fluorescence

2016 ◽  
Vol 20 (01n04) ◽  
pp. 429-437 ◽  
Author(s):  
Brijesh Chandra ◽  
Navendu Mondal ◽  
B. Sathish Kumar ◽  
Pradeepta K. Panda
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Transfer Process ◽  
Intramolecular Charge Transfer ◽  
Photophysical Properties ◽  
Charge Transfer Process ◽  
Solid State Fluorescence

A new subporphyrin namely, hydroxo-5,10,15-tri([Formula: see text]-propyl-3-carbazolyl)subporphyri natoboron(III) 6 has been synthesized via the reported litreture procedure by the condensation of pyridine-tri-[Formula: see text]-pyrrolylborane with 9-propyl-9H-carbazole-3-carbaldehyde. Its porphyrin analog [Formula: see text]. 5,10,15,20-tetra([Formula: see text]-propyl-3-carbazolyl)porphyrin has also been isolated from the reaction mixture, formed due to scrambling process and complexed with Zn(II). Photophysical properties of both subporphyrin and Zn(II)porphyrin have been studied in detail to confirm the intramolecular charge transfer process in subporphyrin analog. In addition, the ring contracted congener 6 also displays solid state fluorescence.

Fluorescence Quenching of Aminodiphenylamines with Chloromethanes

2002 ◽  
Vol 67 (8) ◽  
pp. 1154-1164 ◽  
Author(s):  
Nachiappan Radha ◽  
Meenakshisundaram Swaminathan
Keyword(s):  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Ground State ◽  
Rate Constants ◽  
Quenching Mechanism ◽  
Quenching Rate ◽  
Charge Transfer Interaction ◽  
Electronically Excited ◽  
A Charge

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.

Color Emission Carbon Dots with Quench-ResixAstant Solid-State Fluorescence for Light-Emitting Diodes

2021 ◽  
Vol 9 (10) ◽  
pp. 3901-3908
Author(s):  
Fanyong Yan ◽  
Hao Zhang ◽  
Jinxia Xu ◽  
Yawei Wu ◽  
Yueyan Zang ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Dots ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Solid State Fluorescence ◽  
Color Emission
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