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Molecular and structural characterization of New Red and Erythrosine by fluorescence polarization spectroscopy

Chun Zhu

School of Science, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

School of Internet of Things, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

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Jia-Meng Du

School of Science, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

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Jin-Chen Zhao

School of Science, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

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Tuo Zhu

School of Science, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

School of Internet of Things, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

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, and

Guo-Qing Chen

School of Science, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

School of Internet of Things, Jiangnan University, No. 1800 Lihu Road, Wuxi 214122, China

E-mail Address: cgq2098@163.com

Corresponding author.

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https://doi.org/10.1142/S0217984917400620Cited by:0 (Source: Crossref)

Abstract

The fundamental and the fluorescence anisotropies of New Red and Erythrosine were measured. The intersection angles between the absorption and the emission dipole moments for New Red and Erythrosine are 4.44 $^{\circ}$ and 23.26 $^{\circ}$ , respectively. The average angle shift of the emission dipole moment of New Red is 3.91 $^{\circ}$ during the lifetime of the excited state. This indicates that it has a bifurcated linear structure with weak rotational capacity. The average angle shift of the emission dipole moment of Erythrosine is 9.25 $^{\circ}$ , indicating that it has a partial planar structure and is easier to rotate. The spatial ground state structures were simulated with Gaussian 09.

Keywords:

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