@article {43651,
	title = {Influence of thermocleavable functionality on organic field-effect transistor performance of small molecules},
	journal = {Chemical Physics Letters},
	volume = {678},
	year = {2017},
	month = {JUN},
	pages = {139-145},
	abstract = {Diketopyrrolopyrrole based donor-acceptor-donor conjugated small molecules using ethylene dioxythiophene as a donor was synthesized. Electron deficient diketopyrrolopyrrole unit was substituted with thermocleavable (tert-butyl acetate) side chains. The thermal treatment of the molecules at 160 degrees C eliminated the tert-butyl ester group results in the formation of corresponding acid. Optical and theoretical studies revealed that the molecules adopted a change in molecular arrangement after thermolysis. The conjugated small molecules possessed p-channel charge transport characteristics in organic field effect transistors. The charge carrier mobility was increased after thermolysis of tert-butyl ester group to 5.07 x 10(-5) cm(2)/Vs. (C) 2017 Elsevier B.V. All rights reserved.},
	doi = {10.1016/j.cplett.2017.04.041},
	author = {Mahale, Rajashree Y. and Dharmapurikar, Satej S. and Chini, Mrinmoy Kumar and Venugopalan, Vijay}
}
@article {48087,
	title = {Instabilities as the origin of large-area self-assembled and aligned organic semiconductor nanocrystals},
	journal = {ACS Applied Electronic Materials},
	volume = {4},
	year = {2022},
	month = {APR},
	pages = {1815-1822},
	type = {Article},
	abstract = {<p>
	Aligned nanocrystals of organic semiconductors (OSCs) are highly desirable for electronic devices and biomedical and photonic applications. Solution-based wet processing routes have the potential to produce aligned nanocrystals over large areas in small time frames. Herein, we demonstrate that by optimizing the hydrodynamic evaporative processes, controlled long-range crystalline assemblies of OSCs can be achieved (longest nanocrystal similar to 3 mm) purely through physical processes: namely, from fingering instabilities. Self-assembly is achieved here without strong noncovalent interactions such as hydrogen-bonding interactions. Experimentally our approach involves just placing a drop of a solution on an inclined substrate. Nanocrystals with widths of 300-800 nm and lengths of millimeters (length/width aspect ratios \&gt;10(5)) are formed in less than 2-8 s. A hydrazine chemiresistive sensor based on the aligned crystalline patterns show unprecedented responsivity (similar to 10(-6)), 2 orders greater than those of stick-slip patterns. Finally, experimental parameters that need optimization to achieve nanocrystal patterns are investigated in detail and pointers to fabricate such OSC nanocrystals are provided.</p>
},
	keywords = {aligned fibers, diketopyrrolopyrrole, fingering instability, nanocrystal arrays, naphthalenediimide, organic semiconductors},
	doi = {10.1021/acsaelm.2c00061},
	author = {Venugopalan, Vijay and Jain, Bhanprakash and Mahale, Rajashree Y. and Subramani, Kumar and Krishnamoorthy, Kothandam}
}
