Controlling the Structures and Photonic Properties of Organic Nanomaterials by Molecular Design

Yao, Wei; Yan, Yongli; Xue, Lin; Zhang, Chuang; Li, Guoping; Zheng, Qingdong; Zhao, Yong; Jiang, Hua; Yao, Jiannian

doi:10.1002/ange.201302894

Cited by 58 publications

(13 citation statements)

References 28 publications

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“…Recently Zhao et al. observed the asymmetric light propagation in rhombic organic microplates of 2‐acetyl‐6‐methylaminonaphthalene (AMN), due to the anisotropic molecular packing 20. Spano calculated that the transition dipole moment of DSB molecule is almost parallel to the long molecular axis (Figure S5b) 14.…”

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confidence: 99%

“…According to the TIR theory, the larger n r =2.1 at the HMD/air interface than n r =1.45 at the HMD/quartz interface results in a higher TIR efficiency and a weaker optical loss at the HMD top‐face than those at the HMD bottom‐face 21. Therefore, asymmetric light propagation takes place 20. After the obliquely upward guided PL undergoes TIR at the top‐face, it could be further reflected by the given side‐face (Face 1), and be coupled into 3‐WGM or D3‐WGM resonators selectively constituted by three facets (Face 1, Face 3, and Face 5) (see Figure S5c); however, the obliquely downward guided PL would tend to be leaked into quartz substrate 21.…”

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confidence: 99%

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Whispering‐Gallery‐Mode Microlaser Based on Self‐Assembled Organic Single‐Crystalline Hexagonal Microdisks

et al. 2014

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Whispering-gallery-mode (WGM) resonators of semiconductor microdisks have been applied for achieving low-threshold and narrow-linewidth microlasers, but require sophisticated top-down processing technology. Organic singlecrystalline hexagonal microdisks (HMDs) of p-distyrylbenzene (DSB) self-assembled from solution can function as WGM microresonators with a cavity quality factor (Q) of 210. Both multiple-and single-mode lasing had been achieved using DSB HMDs with an edge length of 4.3 and 1.2 mm, respectively. These organic microdisks fabricated by bottom-up selfassembly approach may offer potential applications as lowthreshold microlaser sources for photonic circuit integration.

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confidence: 99%

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Whispering‐Gallery‐Mode Microlaser Based on Self‐Assembled Organic Single‐Crystalline Hexagonal Microdisks

et al. 2014

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“…As the distance (D) between the excitation point (I body ) and the data collection point (I tip ) increased, the fluorescence intensity decreased gradually, accompanied by a slight red-shift (self-absorption caused by the overlap between absorption and emission wavelength) (Figure 4 a-b, Figure S11). [53,54] The optical loss coefficient of DBDT crystal was calculated through the equation I tip /I body = exp(αD). α (mm À 1 ) was the optical loss coefficient.…”

Section: Resultsmentioning

confidence: 99%

Elastic Organic Crystals Based on Barbituric Derivative: Multi‐faceted Bending and Flexible Optical Waveguide

Peng

Bai

Cao

et al. 2021

Chemistry A European J

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Elastic organic single crystals with light-emitting and multi-faceted bending properties are extremely rare. They have potential application in optical materials and have attracted the extensive attention of researchers. In this paper, we reported a structurally simple barbituric derivative DBDT, which was easily crystallized and gained long needle-like crystals (centimeter-scale) in DCM/CH 3 OH (v/v = 2/8). Upon applying or removing the mechanical force, both the ( 100) and ( 040) faces of the needle-like crystal showed reversible bending behaviour, showing the nature of multi-faceted bending. The average hardness (H) and elastic modulus (E) were 0.28 � 0.01 GPa and 4.56 � 0.03 GPa for the (040) plane, respectively. Through the analysis of the single crystal data, it could be seen that the van der waals (CÀ H•••π and CÀ H•••C), Hbond (CÀ H•••O) and π•••π interactions between molecules were responsible for the generation of the crystal elasticity.Interestingly, elastic crystals exhibited optical waveguide characteristics in straight or bent state. The optical loss coefficients measured at 627 nm were 0.7 dBmm À 1 (straight state) and 0.9 dBmm À 1 (bent state), while the optical loss coefficient (α) were 1.5 dBmm À 1 (straight state) and 1.8 dBmm À 1 (bent state) at 567 nm. Notably, the elastic organic molecular crystal based on barbituric derivative could be used as the candidate for flexible optical devices.

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“…Preparation of p‐DTS(FBTTh 2 ) 2 Microwires : A simple solution‐phase self‐assembly procedure was used that involves application of different solvents and a slow decrease in temperature . Specifically, 100 µL of p ‐DTS(FBTTh 2 ) 2 chlorobenzene solution (2 mg mL −1 , good solvent) was rapidly injected into 2 mL of hexane as the poor solvent at 60 °C.…”

Section: Methodsmentioning

confidence: 99%

Single Crystal Microwires of p‐DTS(FBTTh₂)₂ and Their Use in the Fabrication of Field‐Effect Transistors and Photodetectors

Cui

Zhou

et al. 2017

Adv Funct Materials

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Single crystal microwires of a well-studied organic semiconductor used in organic solar cells, namely p-DTS(FBTTh 2 ) 2 , are prepared via a self-assembly method in solution. The high level of intermolecular organization in the single crystals facilitates migration of charges, relative to solution-processed films, and provides insight into the intrinsic charge transport properties of p-DTS(FBTTh 2 ) 2 . Field-effect transistors based on the microwires can achieve hole mobilities on the order of ≈1.8 cm 2 V −1 s −1 . Furthermore, these microwires show photoresponsive electrical characteristics and can act as photoswitches, with switch ratios over 1000. These experimental results are interpreted using theoretical simulations using an atomistic density functional theory approach. Based on the lattice organization, intermolecular couplings and reorganization energies are calculated, and hole mobilities for comparison with experimental measurements are further estimated. These results demonstrate a unique example of the optoelectronic applications of p-DTS(FBTTh 2 ) 2 microwires.

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Controlling the Structures and Photonic Properties of Organic Nanomaterials by Molecular Design

Cited by 58 publications

References 28 publications

Whispering‐Gallery‐Mode Microlaser Based on Self‐Assembled Organic Single‐Crystalline Hexagonal Microdisks

Whispering‐Gallery‐Mode Microlaser Based on Self‐Assembled Organic Single‐Crystalline Hexagonal Microdisks

Elastic Organic Crystals Based on Barbituric Derivative: Multi‐faceted Bending and Flexible Optical Waveguide

Single Crystal Microwires of p‐DTS(FBTTh₂)₂ and Their Use in the Fabrication of Field‐Effect Transistors and Photodetectors

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Controlling the Structures and Photonic Properties of Organic Nanomaterials by Molecular Design

Cited by 58 publications

References 28 publications

Whispering‐Gallery‐Mode Microlaser Based on Self‐Assembled Organic Single‐Crystalline Hexagonal Microdisks

Whispering‐Gallery‐Mode Microlaser Based on Self‐Assembled Organic Single‐Crystalline Hexagonal Microdisks

Elastic Organic Crystals Based on Barbituric Derivative: Multi‐faceted Bending and Flexible Optical Waveguide

Single Crystal Microwires of p‐DTS(FBTTh2)2 and Their Use in the Fabrication of Field‐Effect Transistors and Photodetectors

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Single Crystal Microwires of p‐DTS(FBTTh₂)₂ and Their Use in the Fabrication of Field‐Effect Transistors and Photodetectors