UV polarisation spectroscopy of 1,4-diethynylbenzene

Abstract

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Encryptable Electrochromic Smart Windows: Uniaxially Oriented and Polymerized Hierarchical Nanostructures Constructed by Self-Assembly of Tetrathiafulvalene-Based Reactive Mesogens

“…This result originates from the transition of the π and π* orbitals of TTF chromophores through potential change and is consistent with the photophysical behavior identified in the TTFM monomeric state. 47,48 The absorption wavelength shift of the EC device upon potential change was quantitatively examined by UV−vis spectroscopy (Figure 5b). Consequently, it is confirmed that the yellowish color of the N state results from strong absorption wavelengths between 400 and 500 nm, while the dark-green color of the D state is caused by broadened visible light absorption.…”

Conformation-Dependent Monolayer and Bilayer Structures of an Alkylated TTF Derivative Revealed using STM and Molecular Modeling

“…The increase of the absorption at 400 nm is too large to be attributed to the low oscillator strength of 1 1 A 1 → 2 1 A 1 transition or to transitions to a triplet state. 63,69,75 At first sight, the absorbance close to 450 nm could be ascribed to molecular aggregates. However, the outsized shift for J-type or H-type aggregates (from 380 to 446 nm or 3590 cm −1 ), 76−79 together with the absence of a blue shift of the 307 nm band and the 329 nm shoulder at 25 °C69 when comparing spectra at 65 and 25 °C, make it highly unlikely that an equilibrium between monomers and small aggregates explains the temperature and concentration dependence of the spectra.…”

Attenuated Total Reflection–Far-Ultraviolet Spectroscopy and Quantum Chemical Calculations of the Electronic Structure of the Top Surface and Bulk of Polyethylenes with Different Crystallinities

“…Concerning another application, Thulstrup et al studied embedded solutes on uniaxially stretched PE films with polarized FUV spectroscopy. 24,25 In this study, for our quantum chemical calculations, we used n-pentane as the model compound, and we reproduced the electronic spectra of both crystalline and amorphous structures by varying the distance between the two n-pentane molecules. Therefore, we can not only assign the bands in the spectra of the PEs but also investigate spectral changes arising from differences in crystallinity.…”