Modulation of Solid-State Optical Properties of o-Hydroxynaphthoic Acids through Formation of Charge Transfer Cocrystals with TCNB

2020 ◽  
Vol 20 (11) ◽  
pp. 7492-7500
Author(s):  
Qian-Qian Hao ◽  
Xia-Lin Dai ◽  
Yong-Liang Huang ◽  
Jia-Mei Chen ◽  
Tong-Bu Lu
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Solid State

scholarly journals Crystal Structures and Optical Properties of Two Novel 1,3,5-Trisubstituted Pyrazoline Derivatives

Crystals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 467
Author(s):  
Qi Feng ◽  
Wenhui Huan ◽  
Jiali Wang ◽  
Jiadan Lu ◽  
Guowang Diao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Solid State ◽  
Physical Properties ◽  
Intramolecular Charge Transfer ◽  
Solvent Polarity ◽  
Dihedral Angles ◽  
Polar Solvents ◽  
X Ray ◽  
X Ray Crystallography

Two novel 1,3,5-trisubstituted pyrazoline derivatives—1-acetyl-3-(4-methoxyphenyl)-5-(6-methoxy-2-naphthyl)-pyrazoline (2a) and 1-(4-nitrophenyl)-3-(4-methoxyphenyl)-5-(6-methoxy-2-naphtyl)-pyrazoline (2b)—were synthesized and their structures were determined by single crystal X-ray crystallography. Both of the two crystals exhibit twisted structures due to the large dihedral angles between the pyrazolinyl ring and the aromatic ring at the 5-position (88.09° for 2a and 71.26° for 2b). The optical–physical properties of the two compounds were investigated. The fluorescent emission of 2b arises from the 1,3-disubstituted pyrazoline chromophores and exhibits a red shift in polar solvents and solid-state, which could be attributed to photo-induced intramolecular charge transfer (ICT) from N1 to C3 in the pyrazoline moiety and the intermolecular interactions within the crystal. The fluorescent emissions of 2a (λmax 358–364 nm) in solvents and solid-state both come from 6-methoxy-2-naphthyl chromophores, which are fairly insensitive to the solvent polarity.

scholarly journals Aggregation Induced Emission and Nonlinear Optical Properties of an Intramolecular Charge-Transfer Compound

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1909
Author(s):  
Songhua Chen ◽  
Rui Luo ◽  
Xinyue Li ◽  
Meiyun He ◽  
Shanshan Fu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Solid State ◽  
Nonlinear Optics ◽  
Nonlinear Optical ◽  
High Efficiency ◽  
Intramolecular Charge Transfer ◽  
Dye Sensitized Solar Cells ◽  
Nonlinear Optical Properties ◽  
Aggregation Induced Emission

Intramolecular charge transfer (ICT) compounds have attracted wide attention for their potential applications in optoelectronic materials and devices such as fluorescent sensors, dye-sensitized solar cells, organic light emitting diodes and nonlinear optics. In this work, we have synthesized a new ICT compound, dimethyl-[4-(7-nitro-benzo[1,2,5]thiadiazol-4-yl)-phenyl]-amine (BTN), and have fabricated it into low dimensional micro/nano structures with well-defined morphologies. These self-assembled nanostructures exhibit high efficiency solid state fluorescence via an aggregation induced emission mechanism, which overcomes the defect of fluorescence quenching caused by aggregation in the solid state of traditional luminescent materials. We also explored and studied the nonlinear optical properties of this material through the Z-scan method, and found that this material exhibits large third-order nonlinear absorption and refraction coefficients, which promises applications of the materials in the fields of nonlinear optics and optoelectronics.

Solvatochromism and mechanochromism observed in a triphenylamine derivative

2019 ◽  
Vol 75 (5) ◽  
pp. 839-844
Author(s):  
Chunyang Guo ◽  
Qi Zhang ◽  
Bingqing Zhu ◽  
Bin Zhu ◽  
Weiqun Zhou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Solid State ◽  
Intramolecular Charge Transfer ◽  
Theoretical Calculations ◽  
Fluorescent Dye ◽  
Fluorescent Properties ◽  
Polar Solvents ◽  
Solid States ◽  
Triphenylamine Derivative

A donor–π–acceptor fluorescent dye, 4-[N,N-di(4-phenyl)amino]benzaldehyde 4-chlorobenzoyl hydrazone (TPA-CBH), based on a triphenylamine derivative (TPA) and 4-chlorobenzoyl hydrazine (CBH) was designed and synthesized. The optical properties of this luminogen were investigated in solutions as well as in the solid states. In the intramolecular charge-transfer (CT) mechanism, TPA-CBH exhibits solvatochromism when dissolved in various polar solvents. Aggregation-induced emission was observed with the changes of tetrahydrofuran/water ratios. In the solid state, mechanochromic fluorescence is observed when the samples are stressed under different conditions. Based on structural analyses and theoretical calculations, it is found that intra- and intermolecular CT processes play a key role in the diversity of fluorescent properties.

Quantum optics with nitrogen-vacancy centres in diamond

2017 ◽  
Author(s):  
Yiwen Chu ◽  
Mikhail D. Lukin
Keyword(s):  
Optical Properties ◽  
Quantum Information ◽  
Solid State ◽  
Quantum Optics ◽  
Quantum States ◽  
Nitrogen Vacancy ◽  
Common Theme ◽  
External Effects ◽  
Promising Candidate ◽  
Optical Photons

A common theme in the implementation of quantum technologies involves addressing the seemingly contradictory needs for controllability and isolation from external effects. Undesirable effects of the environment must be minimized, while at the same time techniques and tools must be developed that enable interaction with the system in a controllable and well-defined manner. This chapter addresses several aspects of this theme with regard to a particularly promising candidate for developing applications in both metrology and quantum information, namely the nitrogen-vacancy (NV) centre in diamond. The chapter describes how the quantum states of NV centres can be manipulated, probed, and efficiently coupled with optical photons. It also discusses ways of tackling the challenges of controlling the optical properties of these emitters inside a complex solid state environment.

Solid-state redox couple mediated water splitting

2021 ◽  
Author(s):  
Duanduan Liu ◽  
Wei Wei ◽  
Maidina Mahemu ◽  
Hao Qin ◽  
Kai Zhu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Water Splitting ◽  
Redox Couple ◽  
Electrochemical Water Splitting

The solid-state redox couple is a vital charge transfer medium for electrochemical water splitting.

scholarly journals Twisted One-Dimensional Charge Transfer and Related Y-Shaped Chromophores with a 4H-Pyranylidene Donor: Synthesis and Optical Properties

2021 ◽  
Vol 86 (4) ◽  
pp. 3152-3163
Author(s):  
Víctor Tejeda-Orusco ◽  
Raquel Andreu ◽  
Jesús Orduna ◽  
Belén Villacampa ◽  
Santiago Franco ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
One Dimensional

Synthesis, structure and optical properties of europium doped calcium barium phosphate – a novel phosphor for solid-state lighting

2014 ◽  
Vol 2 (30) ◽  
pp. 6084 ◽  
Author(s):  
Naoyuki Komuro ◽  
Masayoshi Mikami ◽  
Yasuo Shimomura ◽  
Erica G. Bithell ◽  
Anthony K. Cheetham
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Solid State Lighting

Optical Properties of Novel 2,3-Dicyano-5-methyl-6H-1,4-diazepine Dyes in the Solid State

2005 ◽  
Vol 78 (6) ◽  
pp. 1167-1173 ◽  
Author(s):  
Emi Horiguchi ◽  
Shinya Matsumoto ◽  
Kazumasa Funabiki ◽  
Masaki Matsui
Keyword(s):  
Optical Properties ◽  
Solid State

Solid State Structural Properties of Multibridged [3n]Cyclophanes and Their Charge Transfer Complexes

ChemInform ◽  
2004 ◽  
Vol 35 (13) ◽  
Author(s):  
Mikio Yasutake ◽  
Toru Koga ◽  
Chultack Lim ◽  
Ming Zhou ◽  
Wakana Matsuda-Sentou ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Structural Properties ◽  
Charge Transfer Complexes
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