Related Experiment Video
Updated: Dec 11, 2025
08:04
Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
8.8K
Molecular- and Structural-Level Organic Heterostructures for Multicolor Photon Transportation
Yue Yu1, Ming-Peng Zhuo1, Song Chen1
1Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, P. R. China.
The Journal of Physical Chemistry Letters
|August 20, 2020
Summary
Researchers developed a multilevel heterostructure strategy for organic optoelectronics. This approach precisely constructs organic heterostructures (OHSs) enabling multicolor optical outputs for advanced photonics applications.
Area of Science:
- Materials Science
- Organic Electronics
- Nanotechnology
Background:
- Organic heterostructures (OHSs) are crucial for integrated organic optoelectronics.
- Precise synthesis and rational design of OHSs are key challenges.
- Controlling intermolecular interactions is vital for OHS construction.
Purpose of the Study:
- To demonstrate a self-assembly approach for constructing multilevel OHSs.
- To integrate molecular and structural heterostructures for enhanced properties.
- To achieve multicolor optical outputs by modulating optical waveguides.
Main Methods:
- Utilizing a self-assembly strategy combining molecular and structural heterostructures.
- Regulating noncovalent intermolecular interactions for precise OHS construction.
- Employing anthracene and benzopyrene molecules with TCNB cocrystals.
Main Results:
- Successfully constructed vertical (anthracene-TCNB) and horizontal (benzopyrene-TCNB) heterostructures.
- Achieved epitaxial growth of molecules on cocrystals with low lattice mismatch (~5.8%).
- Demonstrated multicolor optical outputs by manipulating active/passive optical waveguides.
Conclusions:
- The multilevel heterostructure strategy enables rational design of OHSs.
- This approach is effective for developing advanced organic photonics.
- The study highlights the potential of engineered OHSs for optoelectronic devices.
Related Concept Videos
01:22Photoreceptors and Visual Pathways
8.3K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
8.3K
01:26Variables Affecting Phosphorescence and Fluorescence
1.1K
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
1.1K
01:15The Antenna Complex
7.3K
Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
7.3K
01:37Super-resolution Fluorescence Microscopy
12.1K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
12.1K
01:14Photoluminescence: Applications
895
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
895
01:26Photochemical Electrocyclic Reactions: Stereochemistry
2.1K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
2.1K