Correction: Azothiophene-based molecular switches: influence of substituent position and solvent environment on photophysical behavior

Abstract

Correction for ‘Azothiophene-based molecular switches: influence of substituent position and solvent environment on photophysical behavior’ by Xin Zhang et al., Phys. Chem. Chem. Phys., 2026, https://doi.org/10.1039/d5cp03027g.

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The authors regret that in the originating article there were mistakes in the naming of compounds 2a–5a. The correct naming and affected spectral assignments are given below.

 

2a: (E)-3-((3′-Carboxy-4′-hydroxyphenyl)diazenyl)thiophene-2-carboxylic acid

HRMS: (−ve ion nanospray): found: 312.9988 (10%), calc. for [M − 2H + Na]⁻: 312.9901; 291.0081 (100%), calc. for [M − H]⁻: 291.0081; 247.0184 (43%), calc. for [M − CO₂H]⁻: 247.0183.

 

3a: (E)-3-((3′-Carboxy-4′-hydroxynaphth-1′-yl)diazenyl)thiophene-2-carboxylic acid

δ_H (400 MHz, DMSO-d₆): 8.86 (1H, d, J = 8.4, 8′-H), 8.47 (1H, s, 2′-H), 8.34 (1H, d, J = 8.0, 5′-H), 7.88 (1H, d, J = 5.0, 5-H), 7.66 (1H, t, J = 7.6, 7′-H), 7.62 (1H, d, J = 5.0, 4-H), 7.49 (1H, t, J = 7.2 Hz, 6′-H).

 

4a: (E)-3-((2′-Hydroxynaphth-1′-yl)diazenyl)thiophene-2-carboxylic acid

δ_C (100.6 MHz, DMSO-d₆): 178.3 (2′-C), 163.2 (2-CO₂H), 147.9 (3-C), 142.6 (4′-C), 133.3 (5-C), 132.8 (8a′-C), 130.2 (1′-C), 129.6 (7′-C), 129.2 (5′-C), 128.3 (4a′-C), 127.1 (6′-C), 126.4 (3′-C), 122.1 (8′-C), 119.3 (4-C), 113.6 (2-C) (Thus, in DMSO-d₆, 4a is present mainly as the hydrazo tautomer.)

 

5a: (E)-3-((3′-Carboxy-2′-hydroxynaphth-1′-yl)diazenyl)thiophene-2-carboxylic acid

HRMS (−ve ion nanospray): found: 341.0239, calc. for [M − H]⁻: 341.0238.

 

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

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