Surface photovoltage measurement of PM10 atmospheric aerosols collected over SRMIST-Kattankulathur campus (12.81° N & 80.03° E): a step towards utilization of atmospheric aerosols in optoelectronic applications

2022 ◽  
Author(s):  
Gobinath Marappan ◽  
Rence P. Reji ◽  
Vigneshwaran Mohan ◽  
T. V. Lakshmi Kumar ◽  
Yuvaraj Sivalingam ◽  
...  
Keyword(s):  
Atmospheric Aerosols ◽  
Surface Photovoltage ◽  
Optoelectronic Applications

INVESTIGATION OF IRON CONTAINING ATMOSPHERIC AEROSOLS

1976 ◽  
Vol 37 (C6) ◽  
pp. C6-841-C6-844 ◽  
Author(s):  
B. KOPCEWICZ ◽  
M. KOPCEWICZ
Keyword(s):  
Atmospheric Aerosols

Dibenzochrysene Enables Tightly Controlled Docking and Stabilizes Photoexcited States in Dual-Pore Covalent Organic Frameworks

2019 ◽  
Author(s):  
Torben Sick ◽  
Niklas Keller ◽  
Nicolai Bach ◽  
Andreas Koszalkowski ◽  
Julian Rotter ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Photophysical Properties ◽  
Visible Spectrum ◽  
Large Family ◽  
Building Blocks ◽  
Band Gaps ◽  
Docking Site ◽  
Covalent Organic Frameworks ◽  
Connected Node ◽  
Optoelectronic Applications

Covalent organic frameworks (COFs), consisting of covalently connected organic building units, combine attractive features such as crystallinity, open porosity and widely tunable physical properties. For optoelectronic applications, the incorporation of heteroatoms into a 2D COF has the potential to yield desired photophysical properties such as lower band gaps, but can also cause lateral offsets of adjacent layers. Here, we introduce dibenzo[g,p]chrysene (DBC) as a novel building block for the synthesis of highly crystalline and porous 2D dual-pore COFs showing interesting properties for optoelectronic applications. The newly synthesized terephthalaldehyde (TA), biphenyl (Biph), and thienothiophene (TT) DBC-COFs combine conjugation in the a,b-plane with a tight packing of adjacent layers guided through the molecular DBC node serving a specific docking site for successive layers. The resulting DBC-COFs exhibit a hexagonal dual-pore kagome geometry, which is comparable to COFs containing another molecular docking site, namely 4,4′,4″,4‴-(ethylene-1,1,2,2-tetrayl)-tetraaniline (ETTA). In this context, the respective interlayer distances decrease from about 4.60 Å in ETTA-COFs to about 3.6 Å in DBC-COFs, leading to well-defined hexagonally faceted single crystals sized about 50-100 nm. The TT DBC-COFs feature broad light absorption covering large parts of the visible spectrum, while Biph DBC-COF shows extraordinary excited state lifetimes exceeding 10 ns. In combination with the large number of recently developed linear conjugated building blocks, the new DBC tetra-connected node is expected to enable the synthesis of a large family of strongly p-stacked, highly ordered 2D COFs with promising optoelectronic properties.

COMPARATIVE STUDY OF URBAN AND RURAL ATMOSPHERIC AEROSOLS IN AND NEAR BUCHAREST, ROMANIA

2017 ◽  
Vol 16 (10) ◽  
pp. 2381-2389 ◽  
Author(s):  
Sanda Voinea ◽  
Gabriela Manolache ◽  
Dimitrios Skliros ◽  
Sabina Stefan
Keyword(s):  
Comparative Study ◽  
Atmospheric Aerosols
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