The effect of dark states on the intersystem crossing and thermally activated delayed fluorescence of naphthalimide-phenothiazine dyads

• Liyuan Cao,
• Xi Liu,
• Xue Zhang,
• Jianzhang Zhao,
• Fabiao Yu and
• Yan Wan

Beilstein J. Org. Chem. 2023, 19, 1028–1046, doi:10.3762/bjoc.19.79

• University, Beijing 100875, P. R. China Key Laboratory of Hainan Trauma and Disaster Rescue, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou 571199, P. R. China 10.3762/bjoc.19.79 Abstract A series of 1,8-naphthalimide (NI)-phenothiazine (PTZ) electron donor

Naphthalimide-phenothiazine dyads: effect of conformational flexibility and matching of the energy of the charge-transfer state and the localized triplet excited state on the thermally activated delayed fluorescence

• Kaiyue Ye,
• Liyuan Cao,
• Davita M. E. van Raamsdonk,
• Zhijia Wang,
• Jianzhang Zhao,
• Daniel Escudero and
• Denis Jacquemin

Beilstein J. Org. Chem. 2022, 18, 1435–1453, doi:10.3762/bjoc.18.149

• additional investigations are required to verify the above postulate and to unravel the TADF mechanism. Recently, we and others found that the orthogonal donor–acceptor dyad derived from 1,8-naphthalimide (NI) and phenothiazine (PTZ) shows TADF in the red spectral range [20][21][22]. Our purpose of designing

1-Imidoalkylphosphonium salts with modulated C_α–P⁺ bond strength: synthesis and application as new active α-imidoalkylating agents

• Jakub Adamek,
• Roman Mazurkiewicz,
• Anna Węgrzyk and
• Karol Erfurt

Beilstein J. Org. Chem. 2017, 13, 1446–1455, doi:10.3762/bjoc.13.142

• succinimide-derived products 5 (A = (CH2)2) were generally lower. In the case of N-(1-methoxyethyl)-1,8-naphthalimide the triphenylphosphine attack on the α-carbon resulted in the splitting of the Cα–N bond instead of the Cα–OMe bond and the corresponding 1-methoxyethyltriphenylphosphonium tetrafluoroborate

Synthesis and spectroscopic properties of 4-amino-1,8-naphthalimide derivatives involving the carboxylic group: a new molecular probe for ZnO nanoparticles with unusual fluorescence features

• Laura Bekere,
• David Gachet,
• Vladimir Lokshin,
• Wladimir Marine and
• Vladimir Khodorkovsky

Beilstein J. Org. Chem. 2013, 9, 1311–1318, doi:10.3762/bjoc.9.147

• patterns. Keywords: fluorescence; hydrogen bond; 1,8-naphthalimide; one- and two-photon absorption; zinc oxide; Introduction 1,8-Naphthalimide derivatives are useful for a variety of applications owing to their strong fluorescence, electroactivity and photostability. These compounds can be employed as

• to be efficient fluorescent molecular probes [7][8]. Recently, the potential of amino-1,8-naphthalimides as fluorescent sensors in living cells has been reviewed [9]. Dendrimers involving the amino-1,8-naphthalimide moieties were showed to be promising active nondoping emitters [10]. 4-Amino

• involve the benzoic acid moiety at the N-atom of the 1,8-naphthalimide. At first we used a general straightforward method involving the hydrolysis of the chloro substituted imide 1 and eventual substitution of the chlorine atom by piperidine. (Scheme 1, Pathway A). The pathway A has two major