scholarly journals Self‐assembly and tunable optical properties of intramolecular charge transfer molecules

Aggregate ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 57-68
Author(s):  
Han Shen ◽  
Yongjun Li ◽  
Yuliang Li
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Self Assembly ◽  
Intramolecular Charge Transfer ◽  
Tunable Optical Properties

Effects of molecular geometry on the efficiency of intramolecular charge transfer–based luminescence in o-carboranyl-substituted 1H-phenanthro[9,10-d]imidazoles

2022 ◽  
Author(s):  
Sehee Im ◽  
Chan Hee Ryu ◽  
Mingi Kim ◽  
Dong Kyun You ◽  
Sanghee Yi ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Phenyl Ring ◽  
Intramolecular Charge Transfer ◽  
Molecular Geometry

Herein, we compared the optical properties of four compounds with an o-carborane cage linked to 1H-phenanthro[9,10-d]imidazole at the ortho- (oPC), meta- (mPC), or para-position (pPC) of the 2-phenyl ring or...

Self-Assembly of Intramolecular Charge-Transfer Compounds into Functional Molecular Systems

2014 ◽  
Vol 47 (4) ◽  
pp. 1186-1198 ◽  
Author(s):  
Yongjun Li ◽  
Taifeng Liu ◽  
Huibiao Liu ◽  
Mao-Zhong Tian ◽  
Yuliang Li
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Intramolecular Charge Transfer ◽  
Molecular Systems

New photoresponsive charge-transfer spiropyran/polyoxometalate assemblies with highly tunable optical properties

2014 ◽  
Vol 2 (9) ◽  
pp. 1628 ◽  
Author(s):  
Khadija Hakouk ◽  
Olivier Oms ◽  
Anne Dolbecq ◽  
Jérôme Marrot ◽  
Ali Saad ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Tunable Optical Properties

Light emission properties and self-assembly of a tolane-based luminogen

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38690-38695 ◽  
Author(s):  
Ying Zang ◽  
Yi Li ◽  
Baozong Li ◽  
Hongkun Li ◽  
Yonggang Yang
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Light Emission ◽  
Intramolecular Charge Transfer ◽  
Aggregation Induced Emission ◽  
Emission Properties

Fluorescent micro/nanostructures were formed by self-assembly of a tolane derivative with intramolecular charge transfer and aggregation-induced emission properties.

scholarly journals Light-enabled reversible self-assembly and tunable optical properties of stable hairy nanoparticles

2018 ◽  
Vol 115 (7) ◽  
pp. E1391-E1400 ◽  
Author(s):  
Yihuang Chen ◽  
Zewei Wang ◽  
Yanjie He ◽  
Young Jun Yoon ◽  
Jaehan Jung ◽  
...  
Keyword(s):  
Optical Properties ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Solvent Polarity ◽  
Stimuli Responsive ◽  
Reversible Transformation ◽  
Potential Applications ◽  
Fundamental Research ◽  
Tunable Optical Properties ◽  
Ph Sensitive Polymer

The ability to dynamically organize functional nanoparticles (NPs) via the use of environmental triggers (temperature, pH, light, or solvent polarity) opens up important perspectives for rapid and convenient construction of a rich variety of complex assemblies and materials with new structures and functionalities. Here, we report an unconventional strategy for crafting stable hairy NPs with light-enabled reversible and reliable self-assembly and tunable optical properties. Central to our strategy is to judiciously design amphiphilic star-like diblock copolymers comprising inner hydrophilic blocks and outer hydrophobic photoresponsive blocks as nanoreactors to direct the synthesis of monodisperse plasmonic NPs intimately and permanently capped with photoresponsive polymers. The size and shape of hairy NPs can be precisely tailored by modulating the length of inner hydrophilic block of star-like diblock copolymers. The perpetual anchoring of photoresponsive polymers on the NP surface renders the attractive feature of self-assembly and disassembly of NPs on demand using light of different wavelengths, as revealed by tunable surface plasmon resonance absorption of NPs and the reversible transformation of NPs between their dispersed and aggregated states. The dye encapsulation/release studies manifested that such photoresponsive NPs may be exploited as smart guest molecule nanocarriers. By extension, the star-like block copolymer strategy enables the crafting of a family of stable stimuli-responsive NPs (e.g., temperature- or pH-sensitive polymer-capped magnetic, ferroelectric, upconversion, or semiconducting NPs) and their assemblies for fundamental research in self-assembly and crystallization kinetics of NPs as well as potential applications in optics, optoelectronics, magnetic technologies, sensory materials and devices, catalysis, nanotechnology, and biotechnology.

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.

Sign in / Sign up

Export Citation Format

Share Document