Organic heterostructures composed of one- and two-dimensional polymorph

April 24, 2020

Organic heterostructures (OHSs) with high spatial and angular precision are key component of the organic optoelectronics, such as organic photovatic (OPV), organic light emitting diodes (OLED), and photo-detectors. Moreover, heterostructure can integrate multiple components into one structure to overcome the challenge of single output channel and provide feasibility for realizing more transmission modes. Besides, the OHSs inherently have advantages including simple solution preparation and synthesis, flexible molecular structure design and broad spectral tenability.

However, OHSs usually require two or more kinds of organic molecules, which brings difficulty to search the universal condition for all materials to grow together. Moreover, the phase separation during the self-assembly of OHSs remains a big challenge. As we know, polymorphism is quite a convenient approach to tune the chemical/physical properties of organic crystal based on one organic compound. Thus, Organic materials with polymorph property can be utilized to fabricate OHSs with enormous structural diversity and novel optical/electronical properties.

Very recently, through the polymorphism, Dr. Xue-Dong Wang and colleagues in Soochow University elaborately fabricated the OHSs of one organic compound of 3,3'-((1E,1'E)-anthracene-9,10-diylbis(ethane-2,1-diyl))dibenzonitril (m-B2BCB), which can simultaneously be self-assembled into one-dimensional (1D) microrods (α phase) and 2D microplates (β phase).The growth mechanism of OHSs is due to the low interplanar spacing mismatch rate of 5.8% between the (010) crystal plane of the 2D branch microplate and (001) of the 1D trunk microrod. These two organic polymorph microcrystals both have good optical waveguide performance with the Rα = 0.022 dB/μm of 1D microrod and the average Rβ = 0.036 dB/μm of 2D microplate. More significantly, the multiple output channels have been achieved in the OHSs, which exhibits the structure-dependent optical signals (green and yellow light) at the different output channel in the OHSs. This work exhibits the great value of polymorphism in OHSs, which could provide further applications on multifunctional organic integrated photonics circuits.
See the article:

Yu Y, Tao Y-C, Zou S-N, Li Z-Z, Zhuo M-P, Yan C-C, Wang X-D, Liao L-S. Organic heterostructures composed of one- and two-dimensional polymorph for photonic applications. Sci. China Chem., 2020, DOI:10.1007/s11426-019-9706-x.

Science China Press

Related Polymorphism Articles from Brightsurf:

Decreased MIR2911 absorption in human with SIDT1 polymorphism fails to inhibit SARS-CoV-2
In a new study in Cell Discovery, Liang Li and Chen-Yu Zhang's group at Nanjing University and two other groups report that SIDT1 polymorphism remarkably decreases HD-MIR2911 absorption in human.

MAX binding with the variant Rs72780850 in RNA helicase DDX1 for susceptibility to neuroblastoma
The researchers adopted the functional polymorphism research strategy to screen out the functional polymorphisms associated with neuroblastoma in Chinese population and elucidate its mechanism, providing data on children susceptible to neuroblastoma in China.

Amygdala changes in male patients with schizophrenia and bipolar disorder
Researchers in Japan have revealed that DNA methylation occurs in the serotonin transporter gene that regulates neurotransmitter transmission in schizophrenia and bipolar patients.

Organic heterostructures composed of one- and two-dimensional polymorph
A recent study facilely synthesized the OHSs composed of these two polymorph phases, whose growth mechanism is attributed to the low lattice mismatch rate of 5.8% between (001) plane of α phase (trunk) and (010) crystal plane of β phase (branch), Significantly, the multiport in/output channels can be achieved in the OHSs, which demonstrates the structure-dependent optical signals with the different output channels in the OHSs.

Scientists identify genetic variation linked to severity of ALS
A discovery made several years ago in a lab researching asthma at Wake Forest School of Medicine may now have implications for the treatment of amyotrophic lateral sclerosis (ALS), a disease with no known cure and only two FDA-approved drugs to treat its progression and severity.

Genetic flaw causes problems for many with hypothyroidism
Nearly 120 million prescriptions for a thyroid medicine called levothyroxine are filled each year, but many patients with hypothyroidism never get the benefit.

Biosensor chip detects single nucleotide polymorphism wirelessly, with higher sensitivity
A team led by the University of California San Diego has developed a chip that can detect a type of genetic mutation known as a single nucleotide polymorphism (SNP) and send the results in real time to an electronic device.

Thyroid gene variation may increase risk for Alzheimer's disease in African Americans
African Americans with a common genetic variation are at increased risk for developing Alzheimer's disease, while European Americans with the same variation are not, according to a study led by researchers at Rush University Medical Center.

New forms of orchids identified and described by Lobachevsky University scientists
At the 22nd World Orchid Conference held in Guayaquil, Ecuador, Lobachevsky University was represented by Director of the Botanical Garden Alexander Shirokov and head of the laboratory at the UNN Institute of Biology and Biomedicine Lavr Kryukov who shared the results of their studies of the polymorphism of Cypripedium guttatum flowers in Russia.

Chemists identify genetic mutation that opens door in combatting age-related diseases
Researchers at the University of Surrey, in collaboration with the Universities of Reading and Cologne, and the Royal Berkshire Hospital, have discovered that it is possible to stop the activation of a group of proteins (NADPH Oxidase) known to cause most of the diseases of ageing.

Read More: Polymorphism News and Polymorphism Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to