Multimodal stimuli-responsive heterotelechelic poly(2-isopropyl-2-oxazoline) (TPE-PiPrOx-R6G) bearing tetraphenylethene (TPE) and rhodamine 6G (R6G) at the α and ω terminals, respectively, was synthesized. TPE-PiPrOx-R6G formed supramolecular polymeric micelles in aqueous solution with a critical micelle concentration of 0.19 g·L^–1. Upon excitation at 310 nm, an aqueous solution of TPE-PiPrOx-R6G (1.00 g·L^–1) exhibited a strong fluorescence emission at approximately 480 and 550 nm, which originated from the aggregation-induced emission of the TPE units and Förster resonance energy transfer from TPE to R6G, respectively. The aforementioned solution showed a phase transition behavior at 30 °C, and its fluorescence emission changed upon heating due to the phase transition of TPE-PiPrOx-R6G. Upon addition of γ-cyclodextrin (γ-CD), the cloud point temperature increased to 40 °C. Furthermore, the fluorescence emission of TPE-PiPrOx-R6G decreased due to the dissociation of the TPE units following their inclusion into γ-CD.

中文翻译：

---

多峰刺激响应荧光团功能化杂多聚（2-异丙基-2-恶唑啉）

合成了分别在α和ω末端带有四苯乙烯（TPE）和若丹明6G（R6G）的多峰刺激响应性杂多烯键聚（2-异丙基-2-恶唑啉）（TPE-P i PrOx-R6G）。TPE-P i PrOx-R6G在水溶液中形成超分子聚合胶束，临界胶束浓度为0.19 g·L ^–1。在310 nm激发后，TPE-P i PrOx-R6G（1.00 g·L ^–1）在大约480和550 nm处表现出很强的荧光发射，这分别是由TPE单元的聚集诱导发射和从TPE到R6G的Förster共振能量转移引起的。前述溶液在30℃下显示出相变行为，并且由于TPE-P i PrOx-R6G的相变，其荧光发射在加热时改变。加入γ-环糊精（γ-CD）后，浊点温度升至40°C。此外，由于TPE-P i PrOx-R6G包含在γ-CD中后，TPE单元解离，导致其荧光发射降低。