Donor–Acceptor Type Pendant Conjugated Molecules Based on a Triazine Center with Depressed Intramolecular Charge Transfer Characteristics as Gain Media for Organic Semiconductor Lasers

2020 ◽  
Vol 26 (14) ◽  
pp. 3103-3112 ◽  
Author(s):  
Xu Liu ◽  
Ming Sang ◽  
He Lin ◽  
Chengfang Liu ◽  
Jialing Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Semiconductor Lasers ◽  
Organic Semiconductor ◽  
Intramolecular Charge Transfer ◽  
Conjugated Molecules ◽  
Transfer Characteristics ◽  
Donor Acceptor ◽  
Gain Media

scholarly journals Pendant conjugated molecules based on a heterogeneous core structure with enhanced morphological and emissive properties for organic semiconductor lasing

2020 ◽  
Vol 4 (12) ◽  
pp. 3660-3668
Author(s):  
Xu Liu ◽  
Ming Sang ◽  
Jinghan Zhou ◽  
Shihao Xu ◽  
Jialing Zhang ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Organic Semiconductor ◽  
Core Structure ◽  
Conjugated Molecules ◽  
Gain Media

A set of oligofluorene-type pendant conjugated molecules based on heterogeneous core structures (C1 and C2) with enhanced morphological and emissive properties have been synthesized and explored as gain media for organic semiconductor lasers.

scholarly journals Tuning of Hyperpolarizability, One- and Two-Photon Absorption of D-A and D-A-A Type Intramolecular Charge Transfer Based Sensors

2019 ◽  
Author(s):  
Pralok K. Samanta ◽  
Md Mehboob Alam ◽  
Ramprasad Misra ◽  
Swapan K. Pati
Keyword(s):  
Charge Transfer ◽  
Gas Phase ◽  
Density Functional ◽  
Intramolecular Charge Transfer ◽  
Photon Absorption ◽  
First Hyperpolarizability ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Nlo Response ◽  
Donor Acceptor

Solvents play an important role in shaping the intramolecular charge transfer (ICT) properties of π-conjugated molecules, which in turn can affect their one-photon absorption (OPA) and two-photon absorption (TPA) as well as the static (hyper)polarizabilities. Here, we study the effect of solvent and donor-acceptor arrangement on linear and nonlinear optical (NLO) response properties of two novel ICT-based fluorescent sensors, one consisting of hemicyanine and dimethylaniline as electron withdrawing and donating groups (molecule 1), respectively and its boron-dipyrromethene (BODIPY, molecule 2)-fused counterpart (molecule 3). Density functional theoretical (DFT) calculations using long-range corrected CAM-B3LYP and M06-2X functionals, suitable for studying properties of ICT molecules, are employed to calculate the desired properties. The dipole moment (µ) as well as the total first hyperpolarizability (β<sub>total</sub>) of the studied molecules in the gas phase is dominantly dictated by the component in the direction of charge transfer. The ratios of vector component of first hyperpolarizability (β<sub>vec</sub>) to β<sub>total</sub> also reveal unidirectional charge transfer process. The properties of the medium significantly affect the OPA, hyperpolarizability and TPA properties of the studied molecules. Time dependent DFT (TDDFT) calculations suggest interchanging between two lowest excited states of molecule 3 from the gas phase to salvation. The direction of charge polarization and dominant transitions among molecular orbitals involved in the OPA and TPA processes are studied. The results presented are expected to be useful in tuning the NLO response of many ICT-based chromophores, especially those with BODIPY acceptors.<br>

scholarly journals Probing charge transfer characteristics in a donor–acceptor metal–organic framework by Raman spectroelectrochemistry and pressure-dependence studies

2018 ◽  
Vol 20 (40) ◽  
pp. 25772-25779 ◽  
Author(s):  
Pavel M. Usov ◽  
Chanel F. Leong ◽  
Bun Chan ◽  
Mikihiro Hayashi ◽  
Hiroshi Kitagawa ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Pressure Dependence ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Transfer Characteristics ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Transfer Properties ◽  
Organic Framework

Donor–Acceptor Metal–Organic Frameworks display redox and pressure dependent charge transfer properties.

scholarly journals Combined Theoretical and Experimental Study on Intramolecular Charge Transfer Processes in Star-Shaped Conjugated Molecules

2019 ◽  
Vol 123 (17) ◽  
pp. 11179-11188 ◽  
Author(s):  
Mónica Moral ◽  
Juan Tolosa ◽  
Jesús Canales-Vázquez ◽  
Juan Carlos Sancho-García ◽  
Andrés Garzón-Ruiz ◽  
...  
Keyword(s):  
Experimental Study ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Conjugated Molecules ◽  
Transfer Processes

scholarly journals N-Substitution of acridone with electron-donating groups: crystal packing, intramolecular charge transfer and tuneable aggregation induced emission

RSC Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 7092-7098 ◽  
Author(s):  
Renfei Liu ◽  
Guanxing Zhu ◽  
Gang Zhang
Keyword(s):  
Charge Transfer ◽  
Transfer Process ◽  
Intramolecular Charge Transfer ◽  
Crystal Packing ◽  
Charge Transfer Process ◽  
Aggregation Induced Emission ◽  
Donor Acceptor ◽  
Electron Donating Groups

Triphenylamine functionalized acridone leads to a donor–acceptor system with intramolecular charge transfer process and tuneable aggregation induced enhanced emission.

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