Tuning the Solid-State Optical Properties of Tetracene Derivatives by Modification of the Alkyl Side-Chains: Crystallochromy and the Highest Fluorescence Quantum Yield in Acenes Larger than Anthracene

2012 ◽  
Vol 12 (5) ◽  
pp. 506-514 ◽  
Author(s):  
Chitoshi Kitamura
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Side Chains ◽  
Alkyl Side Chains

scholarly journals Synthesis of carbon nitride oligomer as a precursor of melon with improved fluorescence quantum yield

2021 ◽  
Vol 2 (18) ◽  
pp. 6083-6093
Author(s):  
Yuto Miyake ◽  
Goichiro Seo ◽  
Kotaro Matsuhashi ◽  
Noriyuki Takada ◽  
Kaname Kanai
Keyword(s):  
Optical Properties ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Carbon Nitride

Melem tetramer, the newly synthesized carbon nitride compound is composed of oligomers with four melem units, is stable in air, and has improved optical properties compared to melon.

Facile preparation of solid-state fluorescent carbon dots with high fluorescence quantum yield and application in rapid latent fingerprints detection

2021 ◽  
Author(s):  
Hai-Jiao Wang ◽  
Wan-Yi Hou ◽  
Jing Kang ◽  
Xin-Yu Zhai ◽  
Hongli Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Latent Fingerprints ◽  
Energy Resonance ◽  
Facile Preparation ◽  
High Fluorescence ◽  
Fluorescent Carbon Dots ◽  
High Fluorescence Quantum Yield ◽  
Resonance Transfer

Due to the direct π - π interaction and excessive energy resonance transfer, it is very challenging to prepare CDs with high fluorescence quantum yield (QY) in solid state. In...

Cyclic hexapeptoids with N-alkyl side chains: solid-state assembly and thermal behaviour

CrystEngComm ◽  
2020 ◽  
Vol 22 (38) ◽  
pp. 6371-6384 ◽  
Author(s):  
Giovanni Pierri ◽  
Rosaria Schettini ◽  
Jürgen Nuss ◽  
Robert E. Dinnebier ◽  
Francesco De Riccardis ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Behaviour ◽  
Lattice Energy ◽  
Side Chains ◽  
X Ray Diffraction ◽  
Energy Calculations ◽  
X Ray ◽  
Alkyl Side Chains

The solid state assembly of two cyclic hexapeptoids decorated respectively with five and six carbon N-alkyl side chains is analyzed by X-ray diffraction, intermolecular energies and lattice energy calculations.

Electronic Structure and Optical Response of Electroluminescent Conjugated Polymers

1997 ◽  
Vol 488 ◽  
Author(s):  
J. L. Bredas ◽  
J. Cornil ◽  
D. Beljonne ◽  
D. A. Dos Santos ◽  
Z. Shuaiv ◽  
...  
Keyword(s):  
Experimental Data ◽  
Optical Properties ◽  
Electronic Structure ◽  
Quantum Yield ◽  
Conjugated Polymers ◽  
Quantum Chemical Calculations ◽  
Theoretical Approach ◽  
Quantum Chemical ◽  
Fluorescence Quantum Yield ◽  
Remarkable Agreement

AbstractIn this contribution, we investigate by means of correlated quantum-chemical calculations the influence of intermolecular interactions on the absorption and emission properties of conjugated chains. Various strategies are suggested to avoid a substantial decrease in fluorescence quantum yield in condensed media. Finally, the reliability of our theoretical approach is validated by showing the remarkable agreement obtained between the experimental data and the calculated optical properties of clusters formed by sexithienyl molecules.

Control of Interchain Contacts, Solid-State Fluorescence Quantum Yield, and Charge Transport of Cationic Conjugated Polyelectrolytes by Choice of Anion

2006 ◽  
Vol 128 (51) ◽  
pp. 16532-16539 ◽  
Author(s):  
Renqiang Yang ◽  
Andres Garcia ◽  
Dmitry Korystov ◽  
Alexander Mikhailovsky ◽  
Guillermo C. Bazan ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
Charge Transport ◽  
Fluorescence Quantum Yield ◽  
Conjugated Polyelectrolytes ◽  
Solid State Fluorescence

scholarly journals Tuning the Optical Characteristics of Diketopyrrolopyrrole Molecules in the Solid State by Alkyl Side Chains

2020 ◽  
Vol 124 (46) ◽  
pp. 25229-25238
Author(s):  
Bart W. H. Saes ◽  
Martin Lutz ◽  
Martijn M. Wienk ◽  
Stefan C. J. Meskers ◽  
René A. J. Janssen
Keyword(s):  
Solid State ◽  
Optical Characteristics ◽  
Side Chains ◽  
Alkyl Side Chains

The Synthesis and Electro-Optical Properties of Perylene Dicarboximide Dimer with Electron Withdrawing Groups

2014 ◽  
Vol 936 ◽  
pp. 950-954
Author(s):  
Hui Min Wei ◽  
Nan Zhao ◽  
Nan Jiang ◽  
Wen Feng Duan ◽  
Bao Xiang Gao
Keyword(s):  
Optical Properties ◽  
Quantum Yield ◽  
Electron Affinity ◽  
Fluorescence Quantum Yield ◽  
Nmr Spectra ◽  
Band Gaps ◽  
Reduction Wave ◽  
Positive Potential ◽  
H Nmr ◽  
C Nmr

Perylene dicarboximide dimer with electron withdrawing groups were synthesized and fully characterized by 1H-NMR and 13C-NMR spectra. The effects of the substituted groups on the optical and electrochemical properties of the two compounds were investigated. The ∏-∏* absorption peak of the perylene dicarboximide dimer compounds were red shifted from 525nm to 535nm. The band gaps of the dimer could be tuned from 2.28 eV to 2.13 eV. The first reduction wave of the dimer with electron withdrawing groups is shifted by 60 mV to more positive potential compared to that of perylene dicarboximide, suggesting the enhanced electron affinity. Furthemore, the dimer exhibited intermolecular aggregation, and decrease fluorescence quantum yield.

Mechanoluminescence and aggregation-enhanced emission (AEE) of an In-MOF based on 9,9’-diphenyl-9H-fluorene tetraacid linker

Nanoscale ◽  
2021 ◽  
Author(s):  
Swati Jindal ◽  
Gulshan Anjum ◽  
Vijay Kumar Maka ◽  
J. Narasimha Moorthy
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Solid State Fluorescence

A water-stable In-MOF, constructed based on a conformationally-flexible tetraacid linker, i.e., 2,7-bis(3,5-dicarboxyphenyl)-9,9’-diphenyl-9H-fluorene, i.e., H4DPF, is shown to exhibit significantly enhanced solid-state fluorescence quantum yield (Φf) of 23% in comparison to...

scholarly journals Solid-State Highly Efficient DR Mono and Poly-Dicyano-Phenylenevinylene Fluorophores

2018 ◽  
Author(s):  
Barbara Panunzi ◽  
Rosita Diana ◽  
Simona Concilio ◽  
Lucia Sessa ◽  
Rafi Shikler ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Spectroscopic Properties ◽  
Crystallographic Data ◽  
Time Dependent ◽  
Aggregation Induced Emission ◽  
Solid Films ◽  
Highly Efficient ◽  
Organic Solid

A highly efficient deep red (DR) emitting organic solid based on a dicyano-phenylenevinylene derivative was reported. The structural and spectroscopic properties of the solid have been described in terms of crystallographic data and time dependent DFT analysis. A noteworthy fluorescence quantum yield of 53% was observed for the brightest emitter cast into solid films. This result can be explained in terms of aggregation-induced emission (AIE) effect.

Tuning the optical properties of BODIPY dyes by N-rich heterocycle conjugation using a combined synthesis and computational approach

2021 ◽  
Author(s):  
Jean Michel Merkes ◽  
Tobias Ostlender ◽  
Fufang Wang ◽  
Haitao Sun ◽  
Fabian Kiessling ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Computational Approach

The increased number of N-atoms induced a blueshift in absorption and a gain in fluorescence quantum yield, from 750 nm and ~0 % for pyrrole to 635 nm and ~40...

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