Photoinduced excimer generation in perylene diimide dimer: effects of solvent polarity [Invited]

Guangliu Ran; Hang Wang; Yujing Song; Yahui Liu; Zhishan Bo; Wenkai Zhang

doi:10.3788/COL202220.100009

Chinese Optics Letters, Volume. 20, Issue 10, 100009(2022)

Photoinduced excimer generation in perylene diimide dimer: effects of solvent polarity [Invited]

Guangliu Ran¹, Hang Wang², Yujing Song¹, Yahui Liu², Zhishan Bo^2,3, and Wenkai Zhang^1、*

¹Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, , Beijing 100875, China

²College of Textiles & Clothing, , Qingdao 266071, China

³Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, , Beijing 100875, China

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Figures & Tables(8)

Fig. 1. (a) Molecular structure of PDI-C5; (b) molecular structure of PDI-II; (c) normalized absorption and fluorescence spectra of PDI-C5 in solvents; (d) normalized absorption and fluorescence spectra of PDI- II in solvents.

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Fig. 2. TA spectra at selected delay time of PDI-C5 in (a), (d) DCM, (b), (e) THF, and (c), (f) acetone. (a)–(c) show short time decay range. (d)–(f) show long time decay range. Excited at 480 nm.

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Fig. 3. TA spectra at selected delay time of PDI-II in (a), (d) DCM, (b), (e) THF, and (c), (f) acetone. (a)–(c) show short time decay range. (d)–(f) show long time decay range. Excited at 480 nm.

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Fig. 4. Global target analysis results derived from Fs-TA of PDI-C5. SADSs and population of PDI-C5 in (a), (d) DCM, (b), (e) THF, and (c), (f) acetone (LE is locally excited, CT is charge transfer, and GS is ground state).

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Fig. 5. Global target analysis results derived from Fs-TA of PDI-II. SADSs and population of PDI-II in (a), (d) DCM, (b), (e) THF, and (c), (f) acetone (Ex. is excimer; Re. Ex. is relaxed excimer).

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Fig. 6. Jablonski diagram illustrating the kinetic model used to fit TA from PDI-C5 and PDI-II solutions.

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Table 1. Fluorescence Quantum Yields and Corresponding Fluorescence Lifetime of PDI-C5 and PDI-II in Different Solvents
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Table 1. Fluorescence Quantum Yields and Corresponding Fluorescence Lifetime of PDI-C5 and PDI-II in Different Solvents
Molecule Solution Polarity $Φ$ $τ$ (ns)
PDI-C5 DCM 3.4 $> 0.95$ 4.29
THF 4.2 $> 0.95$ 4.17
Acetone 5.4 $> 0.95$ 4.31
PDI- II DCM 3.4 0.61 5.43
THF 4.2 0.27 5.24
Acetone 5.4 0.04 5.79

Table 2. Time Constants Estimated for Different Processes of PDI-C5 and PDI-II in Different Solvents Determined by Fs-TA Measurements

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Table 2. Time Constants Estimated for Different Processes of PDI-C5 and PDI-II in Different Solvents Determined by Fs-TA Measurements

Molecular	Solution	τ₁ (ps)	τ₂ (ps)	τ₃ (ps)	τ₄ (ps)
PDI-C5	DCM	$129 \pm 1$	$2957 \pm 11$	–	–
	THF	$139 \pm 1$	$3417 \pm 14$	–	–
	Acetone	$113 \pm 6$	$3335 \pm 31$	–	–
PDI-II	DCM	$92 \pm 17$	$4402 \pm 54$	–
	THF	$7.69 \pm 0.71$	–	$213 \pm 76$	$2874 \pm 56$
	Acetone	$6.48 \pm 0.72$	–	$131 \pm 25$	$3169 \pm 117$

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Guangliu Ran, Hang Wang, Yujing Song, Yahui Liu, Zhishan Bo, Wenkai Zhang, "Photoinduced excimer generation in perylene diimide dimer: effects of solvent polarity [Invited]," Chin. Opt. Lett. 20, 100009 (2022)

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Paper Information

Special Issue: ULTRAFAST OPTICS: FUNDAMENTALS AND APPLICATIONS

Received: Aug. 16, 2022

Accepted: Sep. 8, 2022

Published Online: Oct. 12, 2022

The Author Email: Wenkai Zhang (wkzhang@bnu.edu.cn)

DOI:10.3788/COL202220.100009

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Fluorescence Quantum Yields and Corresponding Fluorescence Lifetime of PDI-C5 and PDI-II in Different Solvents

Table 1. Fluorescence Quantum Yields and Corresponding Fluorescence Lifetime of PDI-C5 and PDI-II in Different Solvents

Table 2. Time Constants Estimated for Different Processes of PDI-C5 and PDI-II in Different Solvents Determined by Fs-TA Measurements

Table 2. Time Constants Estimated for Different Processes of PDI-C5 and PDI-II in Different Solvents Determined by Fs-TA Measurements